CN104235810A - Heat energy recovery device for heat energy produced based on melamine - Google Patents
Heat energy recovery device for heat energy produced based on melamine Download PDFInfo
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- CN104235810A CN104235810A CN201410451464.4A CN201410451464A CN104235810A CN 104235810 A CN104235810 A CN 104235810A CN 201410451464 A CN201410451464 A CN 201410451464A CN 104235810 A CN104235810 A CN 104235810A
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- Prior art keywords
- melamine
- heat
- crystallizer
- heat energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
The invention discloses a heat energy recovery device for heat energy produced based on melamine. A pipeline type heat pipe exchanger is arranged between a hot gas filter and a crystallizer, so that high-temperature reaction gas of 320 DEG C which comes out from the hot gas filter can be reduced to about 270 DEG C; then the high-temperature reaction gas of 270 DEG C enters the crystallizer to be quenched to 210 DEG C with cold air of 140 DEG C which enters from the lower part; the melamine enters a melamine catcher after being crystallized to separate out the melamine. In such a way, the part of heat energy for reducing the high-temperature reaction gas from 320 DEG C to 270 DEG C is recovered, so that high-quality high-pressure steam with pressure of being greater than 45 kg/cm<2> can be produced, and the cold air of 140 DEG C which enters the lower part of the crystallizer can also be reduced by about 30 percent; the power consumption of a cold air fan is reduced; the device has better economic benefit.
Description
Technical field
The invention belongs to one-step method gas phase quenching and produce melamine technical field, particularly relate to the heat-energy recovering apparatus that a kind of melamine crystallizer entrance reclaims heat.
Background technology
Existing one-step method gas phase quenching preparation technology of melamine: generate gas from the pyroreaction of hot-air filter out 320 DEG C and directly enter the cold air that crystallizer and urine washes 140 DEG C of tower and carry out gas phase quenching, the temperature of gaseous mixture is made to be down to 210 DEG C, melamine crystallization also trips out crystallizer with mist one and enters melamine collector, after isolating melamine, the mist of 210 DEG C enters Cool gas blower.The gas of Cool gas blower outlet enters urine again and washes tower.The problem of this technique is, generates gas directly enter crystallizer from the pyroreaction of hot-air filter out 320 DEG C, be down to 210 DEG C need with the cold air quenching of 140 DEG C more than 3 times, such Cool gas blower power consumption will be very high.Reduce the power consumption of Cool gas blower, the amount of the cold air of 140 DEG C used of gas phase quenching in crystallizer will be reduced, this just needs the temperature of the high-temperature gas first reducing crystallizer entrance, just crystallization is started when being reduced to 265 DEG C because the pyroreactions of 320 DEG C generate gas, net quantity of heat when gas is directly reduced to 210 DEG C is generated from the pyroreaction of 320 DEG C so will reclaim, need not consider it is impossible now by the cold air quenching of 140 DEG C more than 3 times completely, because it is very difficult for solving Crystallization Plugging in heat-energy recovering apparatus.So fail from technique and all more satisfactory heat-energy recovering apparatus of configuration aspects always.
Summary of the invention
The object of this invention is to provide a kind of heat-energy recovering apparatus producing melamine crystallizer entrance recovery heat.
The object of the invention is to be achieved through the following technical solutions, in the technique of one-step method gas phase quenching melamine, one heat-energy recovering apparatus is set between hot-air filter and crystallizer, described heat-energy recovering apparatus is duct type heat exchange of heat pipe, described duct type heat exchange of heat pipe is a columnar housing, longitudinally many heat exchanger tubes are provided with in described housing, high temperature gas passage is formed between described many longitudinal heat exchanger tubes, described heat exchanger tube is connected with drum, described high temperature gas passage is connected with crystallizer, generate gas from hot-air filter pyroreaction out and enter duct type heat exchange of heat pipe, by in heat exchanger during high temperature gas passage, cryogenic gas in its heat and heat exchanger tube exchanges, make it lower the temperature, and then enter crystallizer, drum is entered after cryogenic gas heat absorption in heat exchanger tube, in drum, enter heat exchanger tube again after cooling recycle.
Beneficial effect of the present invention: by arranging a duct type heat exchange of heat pipe between hot-air filter and crystallizer, can by from about the hot-air filter high-temperature reacting gas to 270 of 320 DEG C out DEG C, then the high-temperature reacting gas of 270 DEG C enters crystallizer again, the cold air quenching to 210 DEG C of 140 DEG C that enter with bottom, enter melamine collector after melamine crystallization, isolate melamine.So both reclaimed high-temperature reacting gas is down to 270 DEG C partial heat from 320 DEG C, can produce higher than 45kg/cm
2the high steam of high-quality, the cold air of 140 DEG C entering crystallizer bottom can also be made to reduce about 30%, reduce the power consumption of Cool gas blower, there is good economic benefit.
Accompanying drawing explanation
Embodiments of the invention are described in detail below in conjunction with accompanying drawing
Fig. 1 is schematic diagram of the present invention
In figure: 1, housing 2, heat exchanger tube 3, high temperature gas passage 4, drum 5, crystallizer.
Detailed description of the invention
As shown in Figure 1, in the technique of one-step method gas phase quenching melamine, one duct type heat exchange of heat pipe is set between hot-air filter and crystallizer 5, duct type heat exchange of heat pipe is a columnar housing 1, longitudinally many heat exchanger tubes 2 are provided with in housing 1, high temperature gas passage 3 is formed between many longitudinal heat exchanger tubes 2, heat exchanger tube 2 is connected with drum 4, high temperature gas passage 3 is connected with crystallizer 5, generate gas from hot-air filter pyroreaction out and enter duct type heat exchange of heat pipe, by in heat exchanger during high temperature gas passage 3, cryogenic gas in its heat and heat exchanger tube 2 exchanges, make it lower the temperature, and then enter crystallizer 5, drum 4 is entered after cryogenic gas heat absorption in heat exchanger tube 2, in drum 4, enter heat exchanger tube 2 again after cooling recycle.
Claims (1)
1. the heat-energy recovering apparatus based on Melamine Production, it is characterized in that between hot-air filter and crystallizer, arrange a heat-energy recovering apparatus, described heat-energy recovering apparatus is duct type heat exchange of heat pipe, described duct type heat exchange of heat pipe is a columnar housing, longitudinally many heat exchanger tubes are provided with in described housing, form high temperature gas passage between described many longitudinal heat exchanger tubes, described heat exchanger tube is connected with drum, and described high temperature gas passage is connected with crystallizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451464.4A CN104235810A (en) | 2014-09-08 | 2014-09-08 | Heat energy recovery device for heat energy produced based on melamine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451464.4A CN104235810A (en) | 2014-09-08 | 2014-09-08 | Heat energy recovery device for heat energy produced based on melamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104235810A true CN104235810A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410451464.4A Pending CN104235810A (en) | 2014-09-08 | 2014-09-08 | Heat energy recovery device for heat energy produced based on melamine |
Country Status (1)
| Country | Link |
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| CN (1) | CN104235810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465288A (en) * | 2018-05-07 | 2018-08-31 | 河南省中原大化集团有限责任公司 | Heat energy exchange device and application process between a kind of material |
Citations (11)
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|---|---|---|---|---|
| US4074660A (en) * | 1975-11-24 | 1978-02-21 | The Lummus Company | Waste heat recovery from high temperature reaction effluents |
| CN1124236A (en) * | 1995-06-14 | 1996-06-12 | 蒋大洲 | Process for producing melamine and its equipment |
| US5895523A (en) * | 1997-12-24 | 1999-04-20 | Solv-Ex Corporation | Process for making basic alkali metal sulfate pigments |
| CN201340216Y (en) * | 2008-11-30 | 2009-11-04 | 李东田 | Device for recovering excess heat of exhaust of tripolycyanamide reaction |
| DE102008032425A1 (en) * | 2008-07-10 | 2010-01-14 | Lurgi Gmbh | Process and plant for the production of melamine |
| CN201598246U (en) * | 2009-11-02 | 2010-10-06 | 聊城市鲁西化工工程设计有限责任公司 | Melamine and urea co-production heat energy recycling device |
| CN102219754A (en) * | 2011-04-28 | 2011-10-19 | 四川金圣赛瑞化工有限责任公司 | Energy-saving and resource-saving system and process for producing melamine by using gas-phase quenching process |
| CN102276544A (en) * | 2011-05-08 | 2011-12-14 | 徐建华 | Production equipment, energy-saving production system and production method for melamine |
| CN102452992A (en) * | 2010-10-20 | 2012-05-16 | 郗运柱 | Energy-saving process for producing melamine |
| CN203577362U (en) * | 2013-12-10 | 2014-05-07 | 成都天化化工工程技术有限公司 | Energy-saving type crystallizer used for melamine device |
| CN204084299U (en) * | 2014-09-08 | 2015-01-07 | 山东省舜天化工集团有限公司 | Residual heat using device in a kind of preparation technology of melamine |
-
2014
- 2014-09-08 CN CN201410451464.4A patent/CN104235810A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4074660A (en) * | 1975-11-24 | 1978-02-21 | The Lummus Company | Waste heat recovery from high temperature reaction effluents |
| CN1124236A (en) * | 1995-06-14 | 1996-06-12 | 蒋大洲 | Process for producing melamine and its equipment |
| US5895523A (en) * | 1997-12-24 | 1999-04-20 | Solv-Ex Corporation | Process for making basic alkali metal sulfate pigments |
| DE102008032425A1 (en) * | 2008-07-10 | 2010-01-14 | Lurgi Gmbh | Process and plant for the production of melamine |
| CN201340216Y (en) * | 2008-11-30 | 2009-11-04 | 李东田 | Device for recovering excess heat of exhaust of tripolycyanamide reaction |
| CN201598246U (en) * | 2009-11-02 | 2010-10-06 | 聊城市鲁西化工工程设计有限责任公司 | Melamine and urea co-production heat energy recycling device |
| CN102452992A (en) * | 2010-10-20 | 2012-05-16 | 郗运柱 | Energy-saving process for producing melamine |
| CN102219754A (en) * | 2011-04-28 | 2011-10-19 | 四川金圣赛瑞化工有限责任公司 | Energy-saving and resource-saving system and process for producing melamine by using gas-phase quenching process |
| CN102276544A (en) * | 2011-05-08 | 2011-12-14 | 徐建华 | Production equipment, energy-saving production system and production method for melamine |
| CN203577362U (en) * | 2013-12-10 | 2014-05-07 | 成都天化化工工程技术有限公司 | Energy-saving type crystallizer used for melamine device |
| CN204084299U (en) * | 2014-09-08 | 2015-01-07 | 山东省舜天化工集团有限公司 | Residual heat using device in a kind of preparation technology of melamine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108465288A (en) * | 2018-05-07 | 2018-08-31 | 河南省中原大化集团有限责任公司 | Heat energy exchange device and application process between a kind of material |
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Application publication date: 20141224 |