CN100460040C - Apparatus for recovering and purifying volatile organic compound from waste gas and its application - Google Patents
Apparatus for recovering and purifying volatile organic compound from waste gas and its application Download PDFInfo
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- CN100460040C CN100460040C CNB2006101610132A CN200610161013A CN100460040C CN 100460040 C CN100460040 C CN 100460040C CN B2006101610132 A CNB2006101610132 A CN B2006101610132A CN 200610161013 A CN200610161013 A CN 200610161013A CN 100460040 C CN100460040 C CN 100460040C
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Abstract
The present invention relates to apparatus for recovering and purifying volatile organic compound from waste gas and its application. The apparatus has one first cooler, one grain filter and one polymer filter connected successively, one second cooler and one adsorber assembly connected through one three-way valve and one thermometer to the outlet of the polymer filter, one second condensing cooler, one fourth cooler and one first gas-liquid separator connected successively to the outlet of the adsorber assembly, and one separating tank connected to the first gas-liquid separator, one water soluble solution storing tank and one water insoluble solution storing tank. The present invention may be used for printing machine, dyeing and printing machine and reactor to prevent air pollution and recover solvent.
Description
Technical field
The present invention relates to a kind of recovery, purify the device and the application thereof that contain volatile organic compound from waste gas, particularly relate to a kind of by the recovery that contains volatile organic compound from waste gas, purifier and the application thereof that emit in printing machine, dyeing machine and the reactor.
Background technology
At present, be useful on dissolving resin and the mobile volatile organic solvent mutually of conduct owing in printing-ink, contain, as: ethanol, ethyl acetate, ethanol diethyl ether, butyl acetate, cyclohexane, cyclohexanone, toluene, dimethylbenzene, acetone, butanone and mineral oil, kerosene, gasoline, seal paper money wet goods etc.Machine room in the printing house, just the paper of printing will pass through drying course, make the ink setting film forming that is printed onto on the paper, therefore a large amount of volatile organic solvents are along with the rising of temperature is all volatilized, and mix with air, carry out emptying then, so not only caused serious pollution to air, people's health has been brought severe impairment, and these organic solvents can not be reused, and printing enterprise will drop into a large amount of funds and buy these organic solvents, have therefore brought heavy financial burden to enterprise, seriously influence economic benefit of enterprises, caused the huge waste of resource simultaneously.
At present, component more complicated in the dyestuff contains the volatile organic solvent of pigment, surfactant, Ester and dissolving above-mentioned substance usually, as: alkanes substance, ether material and alcohols material etc.Printing and dyeing workshop in printing and dyeing mill, the fabric of just printing and dyeing out will pass through drying course, make the color dryness finalization on the fabric of printing and dyeing, therefore a large amount of volatile organic solvents are along with the rising of temperature is all volatilized, and mix with air, carry out emptying then, so not only caused serious pollution to air, people's health has been brought severe impairment, and these organic solvents can not repeat, printing and dyeing enterprise will drop into a large amount of fund purchases these machine solvents, has therefore brought heavy financial burden to enterprise, has seriously influenced economic benefit of enterprises.
In the reactor (as extractive reaction still, rectification process still etc.) of chemical industry and pharmacy industry, also can give off volatile organic solvent, these solvents directly carry out emptying, so not only caused serious pollution to air, people's health has been brought severe impairment, and these organic solvents can not repeat, and chemical industry and pharmacy corporation will drop into a large amount of funds and buy these machine solvents are arranged, therefore bring heavy financial burden to enterprise, seriously influenced economic benefit of enterprises.
China Patent No. ZL01109295.5 discloses a kind of waste gas recovering device and device, wherein disclose water and absorbed VOC, and then carry out freezing with separate, though this device cost recovery is lower, but it is well-known, a lot of organic solvents are water insoluble, or are slightly soluble in water, so this device is confined to commute, and to be dissolved in the assimilation effect of VOC of water better.
China Patent No. ZL02805902.6 discloses by the charcoal adsorbent bed and has reclaimed VOC, wherein disclose VOC has been passed through active carbon adsorber, the device that VOC is reclaimed, if handle the organic compound that from printing machine and dyestuff machine, evaporates with this device and device, because the organic compound that evaporates from printing machine and dyestuff machine has a large amount of fibers and high molecular polymer as resin, these VOCs directly enter the destruction that active carbon adsorber can cause the active carbon adsorber irreversibility, and from printing machine, the temperature of the organic compound that evaporates in dyestuff machine and the reactor is very high usually, and these VOCs directly enter active carbon adsorber can cause the active reduction of active carbon and the lost of life.
Summary of the invention
The object of the present invention is to provide a kind of recovery, purify the device and the application thereof that contain volatile organic compound from waste gas, it has overcome the defective of prior art.
In order to realize purpose of the present invention, a kind of recovery of the present invention, the device that purification contains volatile organic compound from waste gas comprises: four coolers, particulate filter, the macromolecular filtering device, separating tank, heater, two gas-liquid separators, thermometer, absorbent element, pump, rectifying column, water-fast solution reservoir, water-soluble solution reservoir and two condensate coolers, wherein: first cooler, particulate filter is connected successively with the macromolecular filtering device, the discharging opening of macromolecular filtering device links to each other with the charging aperture of second cooler and absorbent element respectively by triple valve, between the discharging opening of macromolecular filtering device and above-mentioned triple valve, thermometer is housed, the discharging opening of second cooler links to each other with the absorbent element charging aperture, the discharging opening of absorbent element successively with second condensate cooler, the 4th cooler links to each other with first gas-liquid separator, the gas outlet of first gas-liquid separator links to each other with the air inlet of first cooler, the liquid outlet of first gas-liquid separator links to each other with the separating tank inlet, the liquid outlet of the liquid outlet of the water-fast solution of separating tank and water-soluble solution links to each other with the inlet of water-fast solution reservoir and heater respectively, the liquid outlet of heater successively with rectifying column, first condensate cooler, second gas-liquid separator, pump links to each other with concentration detector, the liquid outlet of concentration detector links to each other with the inlet of rectifying column and the inlet of the 3rd cooler respectively by triple valve, and the liquid outlet of the 3rd cooler links to each other with water-soluble solution reservoir;
A kind of recovery of the present invention, purification contain the device of volatile organic compound from waste gas, wherein: described absorbent element comprises: at least two absorbers that are connected in parallel, each adsorber feed mouth links to each other with the charging aperture of absorbent element respectively by a triple valve, each absorber liquid outlet links to each other with the discharging opening of absorbent element respectively, and the other end of above-mentioned each triple valve is continuous with each corresponding absorber discharging opening respectively;
A kind of recovery of the present invention, purification contain the device of volatile organic compound from waste gas, and wherein: granular activated carbon or active NACF are housed in the described absorber, and absorber also comprises: steam inlet, air intlet and exhaust outlet;
A kind of recovery of the present invention, purification contain the device of volatile organic compound from waste gas, wherein: the outlet end of the water-soluble solution of described separating tank links to each other with heater by second condensate cooler, and water-soluble solution is as the cooling fluid of second condensate cooler;
A kind of recovery of the present invention, purification contain the device of volatile organic compound from waste gas, and wherein: the condensed water in the described rectifying column and the heating tube of heater are formed the loop;
A kind of recovery of the present invention, purification contain the device of volatile organic compound from waste gas, wherein: described rectifying column with saturated vapor as heating source, first cooler, second cooler, the 3rd cooler, the 4th cooler and first condensate cooler with recirculated water as low-temperature receiver;
A kind of recovery of the present invention, purification contain the device of volatile organic compound from waste gas, and wherein: described first cooler, second cooler, the 3rd cooler, the 4th cooler, heater, first condensate cooler and second condensate cooler are plate type heat exchanger, tubular heat exchanger or coil exchanger; Particulate filter is a bag filter, and the macromolecular filtering device is an active carbon filter;
A kind of recovery of the present invention, purify the application of the device contain volatile organic compound from waste gas, wherein: this device is used for reclaiming from what printing machine, dyestuff machine and reactor were discharged and contains volatile organic compound from waste gas;
A kind of recovery of the present invention, purification contain the application of the device of volatile organic compound from waste gas, and wherein: described printing machine comprises: letterpress, offset press, intaglio press, porous printer or offset machine;
A kind of recovery of the present invention, purification contain the application of the device of volatile organic compound from waste gas, and wherein: described printing machine is a money press.
Recovery of the present invention, purify the device contain volatile organic compound from waste gas and compare with the existing device that reclaims organic compound from waste gas, its advantage is: 1. device of the present invention can reclaim the water-soluble or water-fast volatile organic compound from waste gas that contains, and it is wider to reclaim the scope that contains volatile organic compound from waste gas; 2. because the present invention has increased cooler, particulate filter and macromolecular filtering device before carrying out adsorption step, therefore increase the organic efficiency of equipment, increased the service life of equipment simultaneously.; This device solves long-term puzzlement people's the exhaust emission problem of printing machine, dyeing machine and reactor, not only solved the air severe contamination that printing machine, dyeing machine and reactor cause with this device, and the VOC that contains that reclaims can repetitive cycling use, and brought huge economic benefit to enterprise.
Description of drawings
Fig. 1 is the recovery of first embodiment of the invention, the flow chart that purification contains the device of volatile organic compound from waste gas;
Fig. 2 is the recovery of second embodiment of the invention, the flow chart that purification contains the device of volatile organic compound from waste gas;
Fig. 3 is the schematic diagram of absorber of the present invention.
The specific embodiment
As shown in figures 1 and 3, recovery of the present invention, the device that purification contains volatile organic compound from waste gas comprises: four coolers 1,5,11,17, particulate filter 2, macromolecular filtering device 3, separating tank 7, heater 9, two gas- liquid separators 8,14, thermometer 4, absorbent element 20, pump 9, rectifying column 16, water-fast solution reservoir 6, water-soluble solution reservoir 12 and two condensate coolers 15,18, wherein: first cooler 1, particulate filter 2 is connected successively with macromolecular filtering device 3, the discharging opening of macromolecular filtering device 3 links to each other with the charging aperture of second cooler 5 and absorbent element 20 respectively by triple valve, between the discharging opening of macromolecular filtering device 3 and above-mentioned triple valve, thermometer 4 is housed, the discharging opening of second cooler 5 links to each other with absorbent element 20 charging apertures, the discharging opening of absorbent element 20 successively with second condensate cooler 18, the 4th cooler 17 links to each other with first gas-liquid separator 8, the gas outlet of first gas-liquid separator 8 links to each other with the air inlet of first cooler 1, the liquid outlet of first gas-liquid separator 8 links to each other with separating tank 7 inlets, the liquid outlet of the liquid outlet of the water-fast solution of separating tank 7 and water-soluble solution links to each other with the inlet of water-fast solution reservoir 6 and heater 9 respectively, the liquid outlet of heater 9 successively with rectifying column 16, first condensate cooler 15, second gas-liquid separator 14, pump 10 links to each other with concentration detector 13, the liquid outlet of concentration detector 13 links to each other with the inlet of rectifying column 16 and the inlet of the 3rd cooler 11 respectively by triple valve, and the liquid outlet of the 3rd cooler 11 links to each other with water-soluble solution reservoir 12.
The heating tube of condensed water in the rectifying column 16 and heater 9 is formed the loop, be that condensed water in the rectifying column 16 is as the heating source of heater 9, rectifying column 16 with saturated vapor as heating source, first cooler 1, second cooler 5, the 3rd cooler 11, the 4th cooler 17, first condensate cooler 15 and second condensate cooler 18 with recirculated water as low-temperature receiver.First cooler 1, second cooler 5, the 3rd cooler 11, the 4th cooler 17, heater 9, first condensate cooler 15 and second condensate cooler 18 are plate type heat exchanger, tubular heat exchanger or coil exchanger, particulate filter 2 is a bag filter, and macromolecular filtering device 3 is an active carbon filter.
Valve of the necessity of only drawing among the figure and instrument can also increase other valve and instrument according to arts demand on each pipeline, these valves and instrument are unified control by computer.
As shown in Figure 2, substantially the same manner as Example 1 among this embodiment, same section is not stated tired, difference is: the outlet end of the water-soluble solution of separating tank 7 links to each other with heater 9 by second condensate cooler 18, water-soluble solution is as the cooling fluid of second condensate cooler 18, and the gas-liquid mixture in second condensate cooler 8 preheats water-soluble solution simultaneously.
Operation principle:
To reclaim, to purify the device that contains volatile organic compound from waste gas from the printing machine of printing cigarette yew paper is example, illustrates that recovery, purification contain the principle of the device of volatile organic compound from waste gas.Yew paper is cigarette filter outsourcing dedicated paper, is one of requisite material in the cigarette producing process.Yew paper is mainly used in the acetate fiber of parcel tar adsorption, plays attractive in appearance and effect that be convenient to aspirate.In the printing production process of tipping paper, to use a large amount of ethanol and a spot of ethyl acetate, organic solvents such as ethylene glycol ethyl ether, be used to dissolve macromolecule resin, coating with the process of hot-air drying and forming-film in organic solvent all volatilize, reclaim the above-mentioned ethanol that contains, the waste gas of ethyl acetate and ethylene glycol ethyl ether, that at first will collect contains ethanol, the waste gas of ethyl acetate and ethylene glycol ethyl ether is sent in first cooler 1, after being cooled to above-mentioned waste gas about 40 ℃, send into again and carry out the particle filtration in the particulate filter 2, filter out the paper scrap of carrying secretly in the waste gas, send into then carry out resin filter in the macromolecular filtering device 3 after, measure the temperature of filtering back waste gas with thermometer 4, if the temperature of waste gas is greater than 30 ℃, waste gas is sent into continuation cooling in second cooler 5 by triple valve, cooled waste gas is sent in the absorbent element 20 and is adsorbed, if EGT is less than 30 ℃, waste gas directly sent in the absorbent element 20 by triple valve adsorb, ethanol, ethyl acetate and diethanol ether are attracted in the absorber 19, after absorber 19 is filled above-mentioned waste gas, send into saturated vapor from the steam inlet 21 of absorber 9 waste gas that adsorbs is carried out desorption, desorption is to be blown in the absorber 19 with the 0.2MPa superheated vapour, with the ethanol that is adsorbed in the absorber 19, ethyl acetate and diethanol ether blow out from charging aperture 24 and liquid outlet 25, ethanol, ethyl acetate and diethanol ether carry out the condensation cooling along with saturated vapor enters second condensate cooler 18 together, then, be blown into the compressed air of 0.5MPa from the air intlet 22 of absorber 19, to dry up absorber 19, in order to make adsorption process uninterrupted continuously, preferably include at least two absorbers 19, wherein: at least one carries out adsorption operations, other absorber carries out desorption manipulation, the quantity of absorber depends on the capacity of treatment of waste gas amount and absorber, gas-liquid mixture behind the desorption sends into that condensation is cooled to below 40 ℃ in second condensate cooler 18 and the 4th cooler 17, the cooled mixture of above-mentioned condensation is carried out gas-liquid separation in first gas-liquid separator 8, the gas of separating is mixed together with the waste gas of collecting from printing machine and enters in first cooler 1, the liquid of separating is sent into separating tank 7, at separating tank 7 water-fast ethyl acetate and ethylene glycol ethyl ether are sent into water-fast solution reservoir 6, because ethanol is water-soluble, the waste gas that contains ethanol that blows out with saturated vapor is in condensation process, a large amount of water has condensed, therefore, the content of ethanol is lower this moment, be not suitable for recycling, should carry out following concentration step again: after being about to water-soluble ethanol and continuing to be fed into heater 9 and be warmed up to about 50 ℃, send into rectifying column 16 again and carry out rectifying, rectifying column uses the 0.2MPa saturated vapor as heating source, vapo(u)rizing temperature in the rectifying column is about 83 ℃, under this temperature, ethanol evaporates in a large number, the also evaporation thereupon of a spot of water is arranged simultaneously, obtain the gas-liquid mixture of second alcohol and water, then above-mentioned gas-liquid mixture is sent into successively first condensate cooler 15, after carrying out condensation cooling and gas-liquid separation in second gas-liquid separator 14, gas enters air, with concentration of ethanol in the liquid after the concentration detector 13 measurement gas-liquid separations, when concentration of ethanol reaches 85% in the liquid, liquid sent into to be stored in the water-soluble solution reservoir 12 after the cooling of the 3rd cooler 11 store, in order to reusing, when concentration of ethanol did not reach 85% in the liquid, this mixed liquor returned rectifying column 16 and proceeds rectifying.
Below only bright for instance recovery, purification contain the device of volatile organic compound from waste gas, but in fact, this device is not limited only to the above-mentioned application of mentioning, it also can be used for the recovery of the waste gas that emits from dyeing machine with from pharmacy industry, chemical industry reactor, though, the kind of the waste gas of discharging from above-mentioned each equipment has nothing in common with each other, but its recovery principle is identical.
More than describing is explanation of the invention, is not limitation of the invention, and institute of the present invention restricted portion is referring to claim, and under the situation of spirit of the present invention, the present invention can do any type of modification.
Claims (10)
1. recovery, purification contains the device of volatile organic compound from waste gas, it comprises: four coolers (1,5,11,17), particulate filter (2), macromolecular filtering device (3), separating tank (7), heater (9), two gas-liquid separators (8,14), thermometer (4), absorbent element (20), pump (10), rectifying column (16), water-fast solution reservoir (6), water-soluble solution reservoir (12) and two condensate coolers (15,18), it is characterized in that: first cooler (1), particulate filter (2) is connected successively with macromolecular filtering device (3), the discharging opening of macromolecular filtering device (3) links to each other with the charging aperture of second cooler (5) with absorbent element (20) respectively by triple valve, between the discharging opening of macromolecular filtering device (3) and above-mentioned triple valve, thermometer (4) is housed, the discharging opening of second cooler (5) links to each other with absorbent element (20) charging aperture, the discharging opening of absorbent element (20) successively with second condensate cooler (18), the 4th cooler (17) links to each other with first gas-liquid separator (8), the gas outlet of first gas-liquid separator (8) links to each other with the air inlet of first cooler (1), the liquid outlet of first gas-liquid separator (8) links to each other with separating tank (7) inlet, the liquid outlet of the liquid outlet of the water-fast solution of separating tank (7) and water-soluble solution links to each other with the inlet of water-fast solution reservoir (6) with heater (9) respectively, the liquid outlet of heater (9) successively with rectifying column (16), first condensate cooler (15), second gas-liquid separator (14), pump (10) links to each other with concentration detector (13), the liquid outlet of concentration detector (13) links to each other with the inlet of rectifying column (16) and the inlet of the 3rd cooler (11) respectively by triple valve, and the liquid outlet of the 3rd cooler (11) links to each other with water-soluble solution reservoir (12).
2. recovery as claimed in claim 1, purification contain the device of volatile organic compound from waste gas, it is characterized in that: described absorbent element (20) comprising: at least two absorbers that are connected in parallel (19), each absorber (19) charging aperture (24) links to each other with the charging aperture of absorbent element (20) respectively by a triple valve, each absorber (19) liquid outlet (25) links to each other with the discharging opening of absorbent element (20) respectively, and the other end of above-mentioned each triple valve is continuous with corresponding each absorber (19) discharging opening respectively.
3. recovery as claimed in claim 2, purification contain the device of volatile organic compound from waste gas, it is characterized in that: described absorber is equipped with active carbon or NACF in (19), and absorber (19) also comprises: steam inlet (21), air intlet (22) and exhaust outlet (23).
4. recovery as claimed in claim 3, purification contain the device of volatile organic compound from waste gas, it is characterized in that: the outlet end of the water-soluble solution of described separating tank (7) links to each other with heater (9) by second condensate cooler (18), and water-soluble solution is as the cooling fluid of second condensate cooler (18).
As claim 3 or 4 described recovery, purify the device that contains volatile organic compound from waste gas, it is characterized in that: the heating tube composition loop of the condensed water in the described rectifying column (16) and heater (9).
6. recovery as claimed in claim 5, purification contain the device of volatile organic compound from waste gas, it is characterized in that: described rectifying column (16) with saturated vapor as heating source, first cooler (1), second cooler (5), the 3rd cooler (11), the 4th cooler (17) and first condensate cooler (15) with recirculated water as low-temperature receiver.
7. recovery as claimed in claim 6, purification contain the device of volatile organic compound from waste gas, and it is characterized in that: described first cooler (1), second cooler (5), the 3rd cooler (11), the 4th cooler (17), heater (9), first condensate cooler (15) and second condensate cooler (18) are plate type heat exchanger, tubular heat exchanger or coil exchanger; Particulate filter (2) is a bag filter, and macromolecular filtering device (3) is an active carbon filter.
8. recovery as claimed in claim 7, purification contain the application of the device of volatile organic compound from waste gas, and it is characterized in that: this device is used for reclaiming the VOC that contains from the waste gas that printing machine, dyestuff machine and reactor are discharged.
9. recovery as claimed in claim 8, purification contain the application of the device of volatile organic compound from waste gas, and it is characterized in that: described printing machine comprises: letterpress, offset press, intaglio press, porous printer or offset machine.
10. the recovery of stating as claim 8, purification contain the application of the device of volatile organic compound from waste gas, and it is characterized in that: described printing machine is a money press.
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| CNB2006101610132A CN100460040C (en) | 2006-12-04 | 2006-12-04 | Apparatus for recovering and purifying volatile organic compound from waste gas and its application |
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| CNB2006101610132A CN100460040C (en) | 2006-12-04 | 2006-12-04 | Apparatus for recovering and purifying volatile organic compound from waste gas and its application |
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| CN100460040C true CN100460040C (en) | 2009-02-11 |
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| CN1973938A (en) | 2007-06-06 |
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Assignee: Yuxi Sirun Printing Co., Ltd. Assignor: He Jinxing Contract record no.: 2010530000033 Denomination of invention: Apparatus for recovering and purifying volatile organic compound from waste gas and its application Granted publication date: 20090211 License type: Exclusive License Open date: 20070606 Record date: 20100809 |