CN101531378B - Method for recycling synthetic ammonia low-temperature heat energy - Google Patents
Method for recycling synthetic ammonia low-temperature heat energy Download PDFInfo
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- CN101531378B CN101531378B CN2009100617462A CN200910061746A CN101531378B CN 101531378 B CN101531378 B CN 101531378B CN 2009100617462 A CN2009100617462 A CN 2009100617462A CN 200910061746 A CN200910061746 A CN 200910061746A CN 101531378 B CN101531378 B CN 101531378B
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- water
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000002826 coolant Substances 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 238000003889 chemical engineering Methods 0.000 abstract 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- IPLONMMJNGTUAI-UHFFFAOYSA-M lithium;bromide;hydrate Chemical compound [Li+].O.[Br-] IPLONMMJNGTUAI-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
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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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- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
Method for recycling synthetic ammonia low-temperature heat energy relates to a synthetic ammonia low-temperature heat energy recycling process. Plenty of superheated steam in water gas, not taking part in a reaction, and sensible heat of water gas entering a scrubber tower are washed by a washing tower; the washed hot water enters a hot water type lithium bromide absorption refrigerating machine to be made into low-temperature water or cooling water to provide circulation cooling for semiwater gas and other cooling process systems. The invention has the advantages that heat of hot water drained or hot gas exhausted during the chemical engineering production can be effectively utilized to produce cold source, so that electricity consumption on sewage circulation temperature reduction by a cooling tower can be saved, cold source is supplied to the semiwater gas and other cooling process systems, and the technical index on energy saving and discharge reduction during the chemical engineering production can be improved. The method of the invention is not only suitable for recycling synthetic ammonia low-temperature heat energy, but also suitable for recycling low-temperature heat of other chemical engineering enterprises.
Description
Technical field
The present invention relates to the technology of synthetic ammonia low-temperature heat energy recycle.
Background technology
Hot water behind the synthesis ammonia system gas making workshop section scrubber tower washing semi-water gas has very big low temperature heat energy.Synthesis ammonia system gas making workshop section adopts the air-dry fixed bed intermittent type gas producing technology of coal rod, contain a large amount of superheated vapour of reaction and sensible heats that enter the water-gas of scrubber tower do not participated in the water-gas, at present, the prior art processes flow process is as shown in Figure 1: water-gas enters washing tower and washs, hot water after the washing tower washing enters cooling tower lowers the temperature, and the cold water after the cooling turns back to the washing tower recycle.The shortcoming that this technology exists is: a large amount of low temperature heat energies is discharged with sewage and is wasted; Moreover, and these heat energy also will expend a large amount of electric energy of cooling tower and come the sewage processing of lowering the temperature, and this technology does not meet the requirement of national energy-saving and emission-reduction.
Summary of the invention
The objective of the invention is, a kind of recoverying and utilizing method of low temperature heat energy is provided, realize the hot water of discharging in the Chemical Manufacture or the heat energy in the hot gas freezed and wait comprehensive utilization, raising energy-conserving and emission-cutting technology index.
The solution of the present invention is: will contain a large amount of superheated vapour of reaction and sensible heats that enter the water-gas of scrubber tower do not participated in the water-gas, wash through washing tower, the heat energy of the hot water after the washing is as the refrigeration thermal source of hot water lithium bromide absorbing refrigerator, make water at low temperature or water coolant by the hot water lithium bromide absorbing refrigerator, for semi-water gas self and other cooling process system provide the circulation cooling.
Synthetic ammonia low-temperature heat energy recycle method, it is characterized in that, the water-gas of synthesis ammonia system gas making workshop section enters scrubber tower and washs, water-gas after the washing enters operation stage, the high-temperature-hot-water that is heated by water-gas in the scrubber tower enters hot water type lithium bromide absorption cooling water unit through filtering and impurity removing and freezes, on the one hand, the low-temperature water heating after being utilized is sent into the scrubber tower recycle by water pump; On the other hand, hot water type lithium bromide absorption cooling water unit is converted to water coolant with the heat of a part of high-temperature-hot-water, cools off for semi-water gas and other cooling process system, and the water after the utilization returns the recycle of hot water type lithium bromide absorption cooling water unit.
The invention has the beneficial effects as follows: effectively utilized the hot water of discharging in the Chemical Manufacture or the heat of hot gas to produce low-temperature receiver, not only saved the electric energy of cooling tower to the effluent cycle cooling, also provide low-temperature receiver, improved the technical indicator of energy-saving and emission-reduction in the Chemical Manufacture for semi-water gas self and other cooling process system.
Description of drawings
Fig. 1 is existing process flow sheet.
Fig. 2 is a process flow sheet of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment.
In Fig. 2, water-gas enters scrubber tower and washs, and the water-gas after the washing enters technology workshop section; The high-temperature-hot-water that is heated by water-gas in the scrubber tower after the removal of impurities, enters hot water type lithium bromide absorption cooling water unit after filtration, and the heat energy that hot water type lithium bromide absorption cooling water unit absorbs high-temperature-hot-water freezes; After the cooled utilization of high-temperature-hot-water, on the one hand, the low-temperature water heating of formation returns the scrubber tower recycle; On the other hand, the water coolant of formation freezes to semi-water gas and other cooling process system, and the water after the utilization returns the recycle of hot water type lithium bromide absorption cooling water unit.
Present method not only adapts to the synthetic ammonia low-temperature heat energy recycle, and the low temperature heat energy that also adapts to other chemical enterprise is recycled.
Claims (1)
1. synthetic ammonia low-temperature heat energy recycle method, it is characterized in that, the water-gas of synthesis ammonia system gas making workshop section enters scrubber tower and washs, water-gas after the washing enters operation stage, the high-temperature-hot-water that is heated by water-gas in the scrubber tower enters hot water type lithium bromide absorption cooling water unit through filtering and impurity removing and freezes, on the one hand, the low-temperature water heating after being utilized is sent into the scrubber tower recycle by water pump; On the other hand, hot water type lithium bromide absorption cooling water unit is converted to water coolant with the heat of a part of high-temperature-hot-water, cools off for semi-water gas and other cooling process system, and the water after the utilization returns the recycle of hot water type lithium bromide absorption cooling water unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100617462A CN101531378B (en) | 2009-04-27 | 2009-04-27 | Method for recycling synthetic ammonia low-temperature heat energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100617462A CN101531378B (en) | 2009-04-27 | 2009-04-27 | Method for recycling synthetic ammonia low-temperature heat energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101531378A CN101531378A (en) | 2009-09-16 |
| CN101531378B true CN101531378B (en) | 2010-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100617462A Active CN101531378B (en) | 2009-04-27 | 2009-04-27 | Method for recycling synthetic ammonia low-temperature heat energy |
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| Country | Link |
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| CN (1) | CN101531378B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102557075B (en) * | 2010-12-07 | 2014-04-02 | 北京利达丰华科技有限公司 | Method for circularly utilizing cooling capacity and method for increasing yield of synthesis ammonia |
| CN103408036B (en) * | 2013-07-09 | 2015-01-21 | 内蒙古鄂尔多斯联合化工有限公司 | Low grade heat energy recovery method of synthetic ammonia process |
| CN105399112B (en) * | 2015-11-24 | 2017-07-18 | 湖北祥云(集团)化工股份有限公司 | A kind of method and apparatus for synthesizing ammonia synthesis system Optimal improvements |
| CN110510637B (en) * | 2019-08-22 | 2021-02-23 | 山东师范大学 | System and process for synthesizing ammonia by lithium cycle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732008A (en) * | 1986-11-24 | 1988-03-22 | The United States Of America As Represented By The United States Department Of Energy | Triple effect absorption chiller utilizing two refrigeration circuits |
| CN101391781A (en) * | 2008-10-23 | 2009-03-25 | 安乡金大地化工有限责任公司 | Sensible heat recovery integrated system of synthesis ammonia production |
-
2009
- 2009-04-27 CN CN2009100617462A patent/CN101531378B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732008A (en) * | 1986-11-24 | 1988-03-22 | The United States Of America As Represented By The United States Department Of Energy | Triple effect absorption chiller utilizing two refrigeration circuits |
| CN101391781A (en) * | 2008-10-23 | 2009-03-25 | 安乡金大地化工有限责任公司 | Sensible heat recovery integrated system of synthesis ammonia production |
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|---|---|
| CN101531378A (en) | 2009-09-16 |
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Addressee: Zhou Jun Document name: Notification to Pay the Fees |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Low temperature thermal energy recovery and utilization method for synthetic ammonia Effective date of registration: 20230731 Granted publication date: 20101020 Pledgee: Bank of China Limited Huanggang branch Pledgor: HUBEI XIANGYUN (Group) CHEMICAL Co.,Ltd. Registration number: Y2023420000318 |