EP0992733A2 - Production of gas mixtures in transportable pressurised gas containers - Google Patents

Production of gas mixtures in transportable pressurised gas containers Download PDF

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Publication number
EP0992733A2
EP0992733A2 EP99116524A EP99116524A EP0992733A2 EP 0992733 A2 EP0992733 A2 EP 0992733A2 EP 99116524 A EP99116524 A EP 99116524A EP 99116524 A EP99116524 A EP 99116524A EP 0992733 A2 EP0992733 A2 EP 0992733A2
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EP
European Patent Office
Prior art keywords
gas
pressurized
containers
mixtures
production
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99116524A
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German (de)
French (fr)
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EP0992733A3 (en
Inventor
Jürgen Wilde
Hans Hiller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide Deutschland GmbH
Original Assignee
Messer Griesheim GmbH
Air Liquide Deutschland GmbH
Messer Group GmbH
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Filing date
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Application filed by Messer Griesheim GmbH, Air Liquide Deutschland GmbH, Messer Group GmbH filed Critical Messer Griesheim GmbH
Publication of EP0992733A2 publication Critical patent/EP0992733A2/en
Publication of EP0992733A3 publication Critical patent/EP0992733A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10—Mixing gases with gases
    • B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/50—Movable or transportable mixing devices or plants
    • B01F33/502—Vehicle-mounted mixing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F17C2205/0364—Pipes flexible or articulated, e.g. a hose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0157—Compressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0421—Mass or weight of the content of the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0447—Composition; Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/02—Mixing fluids
    • F17C2265/025—Mixing fluids different fluids

Definitions

  • the invention relates to a method for producing gas mixtures.
  • gas mixtures have been in individual compressed gas cylinders (e.g. 50 Liter compressed gas cylinders) or bundles of compressed gas cylinders.
  • the invention has for its object a method for manufacturing to provide gas mixtures in large quantities, especially one Process for the provision of gas mixtures on site at the Consumer.
  • the task was solved by a process for the production of Gas mixtures, characterized in that the gas mixture in the Pressurized gas containers of a pressurized gas cylinder truck manufactured directly or the gas mixture in one of the pressurized gas containers Compressed gas cylinder wagon upstream mixing device continuously manufactured and in the compressed gas tank of the Pressurized gas cylinder wagon are directed.
  • the invention thus relates to a method with the features of claim 1.
  • Advantageous refinements are the subject of Claims 2 to 5.
  • the invention enables the provision of homogeneous, stable, in Specialized companies producing gas mixtures in large quantities every place.
  • Pressurized gas cylinder wagons also called battery vehicles or trailers, are vehicles (for road or rail transport) with a larger number (e.g. 18 or 49) of interconnected pressurized gas containers.
  • Pressurized gas containers are e.g. B. tubes or large bottles.
  • the compressed gas tanks have z. B. gas capacity of 1000 to 4000 m 3 at 200 bar.
  • the pressurized gas containers of the pressurized gas cylinder trolley are preferably individually lockable.
  • the pressurized gas cylinder truck consists, for. B. from a truck chassis, on which a suitable number of compressed gas cylinders as a compressed gas container is installed.
  • the compressed gas cylinders whose geometric volume in usually amounts to 50 to 1500 liters, can be both permanently installed, as well also by battery with quick couplings to the chassis be connected.
  • the number of compressed gas cylinders depends on the Material of the container and the density of the gas mixture; the permissible total weight limits the number of compressed gas cylinders.
  • pressurized gas cylinder wagons with several pressurized gas containers are the Pressurized gas tanks usually with one another via pipes connected and lockable individually or in groups.
  • the design of the piping meets the special requirements of Gas mixture production bill. From the filling and dispensing valve the pipelines branch out towards the compressed gas tanks such that the pressure loss on the way between the main valve and compressed gas tank is almost identical for all compressed gas tanks.
  • gas sources provided.
  • gas sources such. B. compressed gas cylinders, Compressed gas cylinder bundles, gas storage tanks, containers or tanks with refrigerated gases or gas supply systems (with tank, Evaporator and compressor).
  • Gas sources can also be devices for gas generation like electrolysis cells for the generation of Chlorine gas or chemical reactors. With gas components with Low vapor pressure is recommended when using compressed gases in compressed gas cylinders a bottle heater.
  • the gas mixtures are produced, for example, according to static manometric process in which the individual Gas components with the partial pressure corresponding to the proportion in finished gas mixture can be filled in the pressure gas container.
  • the gas mixtures are advantageously produced after dynamic volumetric process.
  • different volume or mass flows of the gas components in merged into a mixing device.
  • a Pressure reducer and one flow meter required for each gas type.
  • Manometric, gravimetric and volumetric gas metering can advantageously be combined to produce the gas mixture become.
  • two secondary gas components can follow the volumetric process and the main component of the Gas mixture can be dosed according to the manometric method.
  • the dynamic-volumetric method is characterized in that all gas components continuously in a mixing device, e.g. B. Mixing chamber or mixing section, flow. Contains a mixing section for example, packing or internals, which are used for swirling the Gases. The ratio of continuously measured and regulated material flows correspond to the desired gas mixture composition.
  • the static volumetric method is advantageous if one faster filling of the compressed gas cylinder wagon should take place or for gas components that require complicated handling.
  • the static-volumetric method is characterized in that a premix is first produced in a mixing container as a mixing device. Such a procedure enables all time-consuming production steps to be carried out without a compressed gas cylinder wagon being connected to the filling device, which drastically reduces the downtimes. This advantage is particularly useful when dosing secondary gas components that are liquefied under pressure and can only be dosed slowly due to icing (eg PH 3 ).
  • the static-volumetric method in particular in the production of gas mixtures with more than two secondary gas components or gas components with a small proportion in the gas mixture, it is advantageous first of all to pre-mix the secondary gas components in a mixing container, e.g. B. generates a mixing container with a geometric volume of up to 10 m 3 .
  • the premix is homogenized, for example, by pumping through an injector, generating a convection flow by heating or a stirring device.
  • the premix reaches the compressed gas cylinder wagon by overflow or with the aid of a compressor.
  • the main gas component is dosed manometrically.
  • Fig. 1 the production of a gas mixture with three is an example Gas components according to the dynamic volumetric process shown.
  • the gas components are in compressed gas containers, the Pressurized gas sources 1, 2 and 3 provided.
  • the compressed gases are removed via the pressure reducers 4, 5 and 6, respectively.
  • the Gas quantity of the gas components is controlled individually via the Valves 11, 12 and 13 metered into the mixing chamber 14.
  • the Mixing ratio of the gas components is controlled by the Valves 11, 12 and 13 by means of a control unit 7 during the Process kept constant.
  • the composition of the Gas mixture is analyzed with the analysis unit 15 (e.g. Mass spectrometer) checked.
  • the continuously formed Gas mixture is continuously fed into a buffer container 16 and compressed by a compressor 17.
  • the compressed gas mixture is the hose 18 into the compressed gas container (tubes) of the Pressurized gas cylinder car 20 filled.
  • Fig. 2 shows an example of the production of a binary gas mixture according to the static-volumetric method.
  • the secondary gas components are metered into the mixing container 27 one after the other.
  • Pressurized gas bottles and pressurized gas bottle bundles serve at Auxiliary gas components with a small proportion as compressed gas source 2.
  • the Quantity dosing is done with the weighing device 21.
  • Second gas components with a large proportion are manometric by the Hand valve 28 metered from another gas source. After completion of the Dosing of all secondary gas components homogenizes one of the already described devices (mixing device) the premix.
  • the premix flows, possibly supported by a compressor, via the connecting hose 18 into the compressed gas container (Tubes) of the gas cylinder truck.
  • the Main component manometrically from a correspondingly powerful Gas source metered in.

Abstract

Production of gas mixtures comprises directly producing the gas mixtures in pressurized gas containers of a gas cylinder truck or continuously producing the gas mixtures in a mixing apparatus connected to the pressurized gas containers of a gas cylinder truck and feeding into the pressurized gas container of the truck.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Gasgemischen.The invention relates to a method for producing gas mixtures.

Gasgemische werden bisher in einzelnen Druckgasflaschen (z. B. 50 Liter-Druckgasflaschen) oder Druckgasflaschenbündeln bereitgestellt.So far, gas mixtures have been in individual compressed gas cylinders (e.g. 50 Liter compressed gas cylinders) or bundles of compressed gas cylinders.

Die geringe Kapazität von Druckgasflaschen und Druckgasflaschenbündeln verhindert bisher eine wirtschaftliche Versorgung mit Gasgemischen bei großer Bedarfsmenge, z. B. bei einem Mengenbedarf von mehr als 1000 m3 Gasgemisch, und zwingt zu einer Vorort-Erzeugung. Bei der Vorort-Erzeugung entstehen folgende Probleme:

  • unerwünschte Schwankungen der Gasgemischzusammensetzung,
  • Aufwand für geschultes Personal bei Betrieb und Wartung,
  • ausreichende Versorgungssicherheit nur bei redundanter Auslegung,
  • Anpassung an kurzfristige Bedarfsänderungen, an die langfristige Bedarfsentwicklung, sowie Modifikationen der Gemischzusammensetzung begrenzt,
  • für höhere verlangte Drücke am Verbrauchsort ist eine Nachverdichtung erforderlich.
The low capacity of pressurized gas cylinders and bundles of pressurized gas cylinders has so far prevented an economical supply of gas mixtures when large quantities are required, e.g. B. with a volume requirement of more than 1000 m 3 of gas mixture, and requires an on-site generation. The following problems arise during on-site generation:
  • undesirable fluctuations in the gas mixture composition,
  • Expenses for trained personnel in operation and maintenance,
  • sufficient security of supply only with redundant design,
  • Adaptation to short-term changes in demand, to long-term demand development, and modifications to the mixture composition limited,
  • for higher required pressures at the point of use, post-compression is required.

Die Herstellung von Gasgemischen erfolgt bisher in Druckgasflaschen nach dem manometrischen Verfahren, dem gravimetrische Verfahren oder dem volumetrischen Verfahren. Diese Verfahren werden in dem Sonderdruck 23/94 "Prüfgase-Präzisionsgemische zum Kalibrieren von Meßgeräten" von Dr. K. Wilde, K. Studtrucker, Firma Linde - Technische Gase beschrieben.Up to now, gas mixtures have been produced in compressed gas cylinders according to the manometric method, the gravimetric method or the volumetric method. This procedure are in the special 23/94 "test gas precision mixtures for Calibration of measuring devices "by Dr. K. Wilde, K. Studtrucker, Firma Linde - Technical gases described.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung von Gasgemischen in großen Mengen bereitzustellen, insbesondere ein Verfahren zur Bereitstellung von Gasgemischen vorort bei dem Verbraucher.The invention has for its object a method for manufacturing to provide gas mixtures in large quantities, especially one Process for the provision of gas mixtures on site at the Consumer.

Gelöst wurde die Aufgabe durch ein Verfahren zur Herstellung von Gasgemischen, dadurch gekennzeichnet, daß das Gasgemisch in den Druckgasbehältern eines Druckgasflaschenwagens direkt hergestellt wird oder das Gasgemisch in einer den Druckgasbehältern eines Druckgasflaschenwagens vorgeschalteten Mischeinrichtung kontinuierlich hergestellt und in die Druckgasbehälter des Druckgasflaschenwagens geleitet werden.The task was solved by a process for the production of Gas mixtures, characterized in that the gas mixture in the Pressurized gas containers of a pressurized gas cylinder truck manufactured directly or the gas mixture in one of the pressurized gas containers Compressed gas cylinder wagon upstream mixing device continuously manufactured and in the compressed gas tank of the Pressurized gas cylinder wagon are directed.

Gegenstand der Erfindung ist somit ein Verfahren mit den Merkmalen von Anspruch 1. Vorteilhafte Ausgestaltungen sind Gegenstand der Ansprüche 2 bis 5.The invention thus relates to a method with the features of claim 1. Advantageous refinements are the subject of Claims 2 to 5.

Die Erfindung ermöglicht die Bereitstellung homogener, stabiler, im Fachunternehmen produzierter Gasgemische in großen Mengen an jedem Ort.The invention enables the provision of homogeneous, stable, in Specialized companies producing gas mixtures in large quantities every place.

Druckgasflaschenwagen, auch Batteriefahrzeuge oder Trailer genannt, sind Fahrzeuge (für Straßen- oder Schienentransport) mit einer größeren Anzahl (z. B. 18 oder 49) von miteinander verbundenen Druckgasbehältern. Druckgasbehälter sind z. B. Röhren (Tubes) oder Großflaschen. Die Druckgasbehälter haben z. B. Gasfassungsvermögen von jeweils 1000 bis 4000 m3 bei 200 bar. Die Druckgasbehälter des Druckgasflaschenwagens sind vorzugsweise einzeln absperrbar.Pressurized gas cylinder wagons, also called battery vehicles or trailers, are vehicles (for road or rail transport) with a larger number (e.g. 18 or 49) of interconnected pressurized gas containers. Pressurized gas containers are e.g. B. tubes or large bottles. The compressed gas tanks have z. B. gas capacity of 1000 to 4000 m 3 at 200 bar. The pressurized gas containers of the pressurized gas cylinder trolley are preferably individually lockable.

Der Druckgasflaschenwagen besteht z. B. aus einem LKW-Fahrgestell, auf dem eine geeignete Anzahl Druckgasflaschen als Druckgasbehälter installiert ist. Die Druckgasflaschen, deren geometrisches Volumen in der Regel 50 bis 1500 Liter beträgt, können sowohl fest montiert, als auch batterieweise über Schnellkupplungen mit dem Fahrgestell verbunden sein. Die Anzahl der Druckgasflaschen richtet sich nach dem Werkstoff des Behälters und der Dichte des Gasgemisches; das zulässige Gesamtgewicht begrenzt die Anzahl der Druckgasflaschen. Es gibt auch Druckgasflaschenwagen mit nur einem Druckgasbehälter, die gemäß der Erfindung eingesetzt werden können.The pressurized gas cylinder truck consists, for. B. from a truck chassis, on which a suitable number of compressed gas cylinders as a compressed gas container is installed. The compressed gas cylinders, whose geometric volume in usually amounts to 50 to 1500 liters, can be both permanently installed, as well also by battery with quick couplings to the chassis be connected. The number of compressed gas cylinders depends on the Material of the container and the density of the gas mixture; the permissible total weight limits the number of compressed gas cylinders. There are also gas cylinder trucks with only one gas cylinder, which can be used according to the invention.

Bei Druckgasflaschenwagen mit mehreren Druckgasbehältern sind die Druckgasbehälter in der Regel über Rohrleitungen miteinander verbunden und einzeln oder zu Gruppen zusammengefaßt absperrbar. Die Gestaltung der Verrohrung trägt den besonderen Erfordernissen der Gasgemischherstellung Rechnung. Von dem Füll- und Entnahmeventil hin zu den Druckgasbehältern verzweigen sich die Rohrleitungen dergestalt, daß der Druckverlust auf dem Weg zwischen Hauptventil und Druckgasbehälter für alle Druckgasbehälter fast identisch ist.For pressurized gas cylinder wagons with several pressurized gas containers are the Pressurized gas tanks usually with one another via pipes connected and lockable individually or in groups. The design of the piping meets the special requirements of Gas mixture production bill. From the filling and dispensing valve the pipelines branch out towards the compressed gas tanks such that the pressure loss on the way between the main valve and compressed gas tank is almost identical for all compressed gas tanks.

Die Gase zur Herstellung der Gasgemische werden in Gasquellen bereitgestellt. Als Gasquellen können z. B. Druckgasflaschen, Druckgasflaschenbündel, Gaslagertanks, Behälter oder Tanks mit kälteverflüssigten Gasen oder Gasversorgungsanlagen (mit Tank, Verdampfer und Kompressor) dienen. Gasquellen können auch Geräte zur Gaserzeugung sein wie Elektrolysezellen zur Erzeugung von Chlorgas oder chemische Reaktoren. Bei Gaskomponenten mit niedrigem Dampfdruck empfiehlt sich bei Verwendung von komprimierten Gasen in Druckgasflaschen eine Flaschenheizung.The gases used to produce the gas mixtures are in gas sources provided. As gas sources such. B. compressed gas cylinders, Compressed gas cylinder bundles, gas storage tanks, containers or tanks with refrigerated gases or gas supply systems (with tank, Evaporator and compressor). Gas sources can also be devices for gas generation like electrolysis cells for the generation of Chlorine gas or chemical reactors. With gas components with Low vapor pressure is recommended when using compressed gases in compressed gas cylinders a bottle heater.

Die Herstellung der Gasgemische erfolgt beispielweise nach dem statisch manometrischen Verfahren, bei dem die einzelnen Gaskomponenten mit dem Partialdruck entsprechend des Anteiles im fertigen Gasgemisch in die Druckgasbehälter gefüllt werden.The gas mixtures are produced, for example, according to static manometric process in which the individual Gas components with the partial pressure corresponding to the proportion in finished gas mixture can be filled in the pressure gas container.

Vorteilhaft erfolgt die Herstellung der Gasgemische nach dem dynamisch-volumetrischen Verfahren. Bei diesem Verfahren werden verschiedene Volumen- oder Massenströme der Gaskomponenten in einer Mischeinrichtung zusammengeführt. Im einfachsten Fall wird ein Druckminderer und ein Durchflußmesser pro Gasart benötigt.The gas mixtures are advantageously produced after dynamic volumetric process. In this procedure different volume or mass flows of the gas components in merged into a mixing device. In the simplest case, a Pressure reducer and one flow meter required for each gas type.

Je nach Konzentrationsbereich, Anfall und Stoffeigenschaften der Gaskomponenten kommen die genannten Füllverfahren zum Einsatz. Manometrische, gravimetrische und volumetrische Gasdosierung können vorteilhaft zur Herstellung des Gasgemisches kombiniert werden. Beispielsweise können zwei Nebengaskommponenten nach dem volumetrischen Verfahren und die Hauptkomponente des Gasgemisches nach dem manometrischen Verfahren dosiert werden.Depending on the concentration range, amount and substance properties of the The above-mentioned filling processes are used for gas components. Manometric, gravimetric and volumetric gas metering can advantageously be combined to produce the gas mixture become. For example, two secondary gas components can follow the volumetric process and the main component of the Gas mixture can be dosed according to the manometric method.

Das dynamisch-volumetrische Verfahren zeichnet sich dadurch aus, daß alle Gaskomponenten kontinuierlich in eine Mischeinrichtung, z. B. Mischkammer oder Mischstrecke, strömen. Eine Mischstrecke enthält beispielsweise Füllkörper oder Einbauten, die für eine Verwirbelung der Gase sorgen. Das Verhältnis der kontinuierlich gemessenen und geregelten Stoffströme entspricht der gewünschten Gasgemischzusammensetzung. The dynamic-volumetric method is characterized in that all gas components continuously in a mixing device, e.g. B. Mixing chamber or mixing section, flow. Contains a mixing section for example, packing or internals, which are used for swirling the Gases. The ratio of continuously measured and regulated material flows correspond to the desired gas mixture composition.

Für Gasgemische mit höherer Genauigkeit wird durch ständiges Analysieren und Rückführen des Ist-Wertes auf die Mengenregelung (Kaskadenschaltung) die Abweichung vom Sollwert wesentlich reduziert.For gas mixtures with higher accuracy is by constant Analyze and trace the actual value back to the quantity control (Cascade connection) significantly reduces the deviation from the setpoint.

Das statisch-volumetrische Verfahren ist vorteilhaft, wenn ein schnelleres Befüllen des Druckgasflaschenwagens erfolgen soll oder bei Gaskomponenten, die kompliziertes Handling verlangen.The static volumetric method is advantageous if one faster filling of the compressed gas cylinder wagon should take place or for gas components that require complicated handling.

Das statisch-volumetrische Verfahren zeichnet sich dadurch aus, daß zunächst ein Vorgemisch in einem Mischbehälter als Mischeinrichtung produziert wird. Eine solche Vorgehensweise ermöglicht es, alle zeitintensiven Produktionsschritte durchzuführen, ohne daß ein Druckgasflaschenwagen an die Fülleinrichtung angeschlossen ist, was die Stillstandzeiten drastisch verringert. Dieser Vorteil kommt insbesondere bei der Dosierung von Nebengaskomponenten zum Tragen, die unter Druck verflüssigt vorliegen und aufgrund der Vereisung nur langsam dosiert werden können (z.B. PH3).The static-volumetric method is characterized in that a premix is first produced in a mixing container as a mixing device. Such a procedure enables all time-consuming production steps to be carried out without a compressed gas cylinder wagon being connected to the filling device, which drastically reduces the downtimes. This advantage is particularly useful when dosing secondary gas components that are liquefied under pressure and can only be dosed slowly due to icing (eg PH 3 ).

Bei dem statisch-volumetrischen Verfahren wird insbesondere bei der Herstellung von Gasgemischen mit mehr als zwei Nebengaskomponenten oder Gaskomponenten mit geringem Anteil im Gasgemisch, vorteilhaft zunächst ein Vorgemisch aus den Nebengaskomponenten in einem Mischbehälter, z. B. ein Mischbehälter mit einem geometrischen Volumen von bis zu 10 m3, erzeugt. Das Vorgemisch wird zum Beispiel durch Umpumpen durch einen Injektor, Erzeugen einer Konvektionsströmung durch Beheizen oder eine Rühreinrichtung homogenisiert. Das Vorgemisch gelangt durch Überströmen oder mit Hilfe eines Kompressors in den Druckgasflaschenwagen. Abschließend wird die Hauptgaskomponente manometrisch dosiert.In the static-volumetric method, in particular in the production of gas mixtures with more than two secondary gas components or gas components with a small proportion in the gas mixture, it is advantageous first of all to pre-mix the secondary gas components in a mixing container, e.g. B. generates a mixing container with a geometric volume of up to 10 m 3 . The premix is homogenized, for example, by pumping through an injector, generating a convection flow by heating or a stirring device. The premix reaches the compressed gas cylinder wagon by overflow or with the aid of a compressor. Finally, the main gas component is dosed manometrically.

Anhand von Fig. 1 und 2 wird die Erfindung näher erläutert.

  • Fig. 1 zeigt schematisch eine Anlage zur Herstellung von Gasgemischen nach dem dynamisch-volumetrischen Verfahren.
  • Fig. 2 zeigt schematisch eine Anlage zur Herstellung von Gasgemischen nach dem statisch-volumetrischen Verfahren.
    • The invention is explained in more detail with reference to FIGS. 1 and 2.
  • Fig. 1 shows schematically a plant for the production of gas mixtures according to the dynamic volumetric method.
  • Fig. 2 shows schematically a plant for the production of gas mixtures according to the static-volumetric method.

    • In Fig. 1 wird als Beispiel die Herstellung eines Gasgemisches mit drei Gaskomponenten nach dem dynamisch-volumetrischen Verfahren dargestellt. Die Gaskomponenten werden in Druckgasbehältern, den Druckgasquellen 1, 2 und 3, bereitgestellt. Die komprimierten Gase werden über die Druckminderer 4, 5 und 6 jeweils entnommen. Die Gasmenge der Gaskomponenten wird individuell über die gesteuerten Ventile 11, 12 und 13 in die Mischkammer 14 dosiert. Das Mischungsverhältnis der Gaskomponenten wird durch die Steuerung der Ventile 11, 12 und 13 mittels einer Steuereinheit 7 während des Prozesses konstant gehalten. Die Zusammensetzung des Gasgemisches wird mit der Analyseeinheit 15 (z. B. Massenspektrometer) kontrolliert. Das kontinuierlich gebildete Gasgemisch wird kontinuierlich in einen Pufferbehälter 16 geführt und mittels einem Kompresser 17 verdichtet. Das verdichtete Gasgemisch wird über den Schlauch 18 in die Druckgasbehälter (Tubes) des Druckgasflaschenwagens 20 gefüllt.In Fig. 1, the production of a gas mixture with three is an example Gas components according to the dynamic volumetric process shown. The gas components are in compressed gas containers, the Pressurized gas sources 1, 2 and 3 provided. The compressed gases are removed via the pressure reducers 4, 5 and 6, respectively. The Gas quantity of the gas components is controlled individually via the Valves 11, 12 and 13 metered into the mixing chamber 14. The Mixing ratio of the gas components is controlled by the Valves 11, 12 and 13 by means of a control unit 7 during the Process kept constant. The composition of the Gas mixture is analyzed with the analysis unit 15 (e.g. Mass spectrometer) checked. The continuously formed Gas mixture is continuously fed into a buffer container 16 and compressed by a compressor 17. The compressed gas mixture is the hose 18 into the compressed gas container (tubes) of the Pressurized gas cylinder car 20 filled.

    Fig. 2 zeigt als Beispiel die Herstellung eines binären Gasgemisches nach dem statisch-volumetrischen Verfahren. Zur Herstellung des Vorgemisches werden die Nebengaskomponenten nacheinander in den Mischbehälter 27 eindosiert. Druckgasflaschen und Druckgasflaschenbündel dienen bei Nebengaskomponenten mit geringem Mengenanteil als Druckgasquelle 2. Die Mengendosierung geschieht mit der Wägeeinrichtung 21. Nebengaskomponenten mit großem Mengenanteil werden manometrisch durch das Handventil 28 aus einer sonstigen Gasquelle dosiert. Nach Abschluß der Dosierung aller Nebengaskomponenten homogenisiert eine der bereits beschriebenen Einrichtungen (Mischeinrichtung) das Vorgemisch.Fig. 2 shows an example of the production of a binary gas mixture according to the static-volumetric method. To make the premix the secondary gas components are metered into the mixing container 27 one after the other. Pressurized gas bottles and pressurized gas bottle bundles serve at Auxiliary gas components with a small proportion as compressed gas source 2. The Quantity dosing is done with the weighing device 21. Second gas components with a large proportion are manometric by the Hand valve 28 metered from another gas source. After completion of the Dosing of all secondary gas components homogenizes one of the already described devices (mixing device) the premix.

    Nach dem Homogenisieren strömt das Vorgemisch, eventuell unterstützt durch einen Kompressor, über den Verbindungsschlauch 18 in die Druckgasbehälter (Tubes) des Druckgasflaschenwagens. Abschließend wird die Hauptkomponente manometrisch aus einer entsprechend leistungsfähigen Gasequelle eindosiert. After homogenization, the premix flows, possibly supported by a compressor, via the connecting hose 18 into the compressed gas container (Tubes) of the gas cylinder truck. In conclusion, the Main component manometrically from a correspondingly powerful Gas source metered in.

    BezugszeichenlisteReference list

    1, 2, 31, 2, 3
    DruckgasquellePressurized gas source
    4, 5, 64, 5, 6
    DruckmindererPressure reducer
    77
    SteuereinheitControl unit
    8, 9, 108, 9, 10
    MassendurchflußreglerMass flow controller
    11, 12, 1311, 12, 13
    gesteuerte Ventilecontrolled valves
    1414
    MischkammerMixing chamber
    1515
    GasanalyseGas analysis
    1616
    PufferbehälterBuffer tank
    1717th
    Kompressorcompressor
    1818th
    VerbindungsschlauchConnecting hose
    1919th
    Druckgasflaschenwagen (Trailer)Gas cylinder wagon (trailer)
    2020th
    DruckgasbehälterCompressed gas tank
    2121
    WägeeinrichtungWeighing device
    2222
    Manometermanometer
    23, 24, 25, 2823, 24, 25, 28
    HandventilManual valve
    2626
    elektrische Widerstandsheizungelectric resistance heating
    2727
    MischbehälterMixing tank

    Claims (7)

    Verfahren zur Herstellung von Gasgemischen, dadurch gekennzeichnet, daß das Gasgemisch in den Druckgasbehältern eines Druckgasflaschenwagens direkt hergestellt wird oder das Gasgemisch in einer den Druckgasbehältern eines Druckgasflaschenwagens vorgeschalteten Mischeinrichtung kontinuierlich hergestellt und in die Druckgasbehälter des Druckgasflaschenwagens geleitet werden.Process for the preparation of gas mixtures, thereby characterized in that the gas mixture in the pressurized gas containers Pressurized gas cylinder car is produced directly or the gas mixture in one of the pressurized gas containers of a pressurized gas cylinder truck upstream mixing device continuously manufactured and in the Pressurized gas container of the compressed gas cylinder car are directed. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Herstellung des Gasgemisches mittels volumetrischer Gasdosierung mindestens einer Gaskomponente erfolgt.A method according to claim 1, characterized in that the Production of the gas mixture by means of volumetric gas metering at least one gas component takes place. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die volumetrische Gasdosierung einer Gaskomponente anhand eines Massendurchflußreglers erfolgt.A method according to claim 2, characterized in that the volumetric gas metering of a gas component based on a Mass flow controller takes place. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gasdosierung einer Gaskomponente mit gravimetrischer Mengenkontrolle erfolgt.A method according to claim 1, characterized in that the Gas metering of a gas component with gravimetric Quantity control takes place. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gasdosierung einer Gaskomponente mit manometrischer Kontrolle erfolgt.A method according to claim 1, characterized in that the Gas metering of a gas component with manometric control he follows. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Gasgemisch oder ein Vorgemisch von Gaskomponenten in einem Mischbehälter oder einer Mischstrecke homogenisiert wird.A method according to claim 1, characterized in that the Gas mixture or a premix of gas components in one Mixing container or a mixing section is homogenized. Verwendung eines oder mehrerer Druckgasbehälter eines Druckgasflaschenwagens zur Herstellung von Gasgemischen.Use of one or more pressurized gas containers Pressurized gas cylinder wagon for the production of gas mixtures.
    EP99116524A 1998-10-08 1999-08-24 Production of gas mixtures in transportable pressurised gas containers Withdrawn EP0992733A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19846287 1998-10-08
    DE19846287A DE19846287A1 (en) 1998-10-08 1998-10-08 Production of gas mixtures with portable compressed gas containers

    Publications (2)

    Publication Number Publication Date
    EP0992733A2 true EP0992733A2 (en) 2000-04-12
    EP0992733A3 EP0992733A3 (en) 2006-05-03

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    FR2811909A1 (en) * 2000-07-18 2002-01-25 Air Liquide Sante France Gas conditioning unit includes gas lines merging into one mixing chamber, having a upstream portion divided into parallel lines carrying an electro-valve
    DE102007062538B4 (en) * 2006-12-27 2010-07-08 Joachim Hawlik Device for killing insects and mites
    CN102818114A (en) * 2011-06-09 2012-12-12 乔治洛德方法研究和开发液化空气有限公司 Installation for packaging NO using mass flow meters
    WO2017167455A1 (en) * 2016-03-31 2017-10-05 Linde Aktiengesellschaft Volumetric and gravimetric fill state for producing a gas mixture
    WO2018193444A1 (en) * 2017-04-16 2018-10-25 Maxima Air Separation Center Ltd. Combined volumetric - gravimetric system and method for preparation of gas mixtures

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    DE102007062538B4 (en) * 2006-12-27 2010-07-08 Joachim Hawlik Device for killing insects and mites
    CN102818114A (en) * 2011-06-09 2012-12-12 乔治洛德方法研究和开发液化空气有限公司 Installation for packaging NO using mass flow meters
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