CN103754894A - Novel method for recycling ammonia synthesis cold energy in synthetic ammonia system - Google Patents
Novel method for recycling ammonia synthesis cold energy in synthetic ammonia system Download PDFInfo
- Publication number
- CN103754894A CN103754894A CN201310716935.5A CN201310716935A CN103754894A CN 103754894 A CN103754894 A CN 103754894A CN 201310716935 A CN201310716935 A CN 201310716935A CN 103754894 A CN103754894 A CN 103754894A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- liquefied
- synthesis
- storage tank
- cold
- 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.)
- Granted
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a new method for recycling ammonia synthesis cold energy in a synthetic ammonia system. The method comprises the following steps that gas ammonia delivered by an ice maker is condensed into liquid ammonia via a condenser; the liquid ammonia enters an ammonia storage tank condenser to exchange heat with liquid ammonia discharged from the synthetic ammonia system; the liquid ammonia subjected to heat exchange enters a liquid ammonia storage tank for supplying ammonia to a synthetic ammonia cooler; the liquid ammonia discharged from the synthetic ammonia system is for downstream user use after being reheated. The method disclosed by the invention has the advantages that the problems that the ammonia storage tank in the refrigerating process of a synthetic ammonia device in summer production is overpressured and the environment is polluted by the gas ammonia discharged into the atmosphere are solved; the steam consumption of a steam turbine for driving the ice maker is reduced; the production is stabilized; the benefit is increased.
Description
?
Technical field
The present invention relates to the freezing field of synthesis ammonia system ammonia synthesis and ice maker, be specifically related to the novel method of ammonia synthesis system liquefied ammonia cold recovery.
Background technology
Synthesis ammonia system ammonia synthesis operation is utilized under operation is sent here above qualified hydrogen, nitrogen is pressed with catalyzer condition at high temperature, height and is reacted, and generates ammonia and also emits heat.The gas ammonia generating is through condensation, separated for downstream user, and the compressed retrieval system of unreacted synthetic gas continues reaction.
The liquefied ammonia temperature that synthesis system is separated is greatly about-10 ~-5 ℃, and this part cold that liquefied ammonia is entrained, uses ammonia customer need different according to downstream, and the recovery process of ammino ammonification cold is different:
1. the first: do not reclaim cold
The liquefied ammonia that ammonia synthesis system produces directly send downstream user after decompression.
2. the second: reclaim cold
The liquefied ammonia that ammonia synthesis system produces after decompression in interchanger with other media for heat exchanges, send downstream user after reclaiming cold.
Summary of the invention
The liquefied ammonia that ammonia synthesis system produces has under high pressure dissolved a part of synthetic unreacted hydrogen, nitrogen, and synthesizing hydrogen, nitrogen while putting ammonia decompression can discharge.For avoiding forming vapour lock in interchanger, affect heat transfer effect, the synthetic liquefied ammonia producing can only be walked tube side in interchanger, and what other need to be lowered the temperature does not walk shell side containing the medium of gas.In order to solve above-mentioned the deficiencies in the prior art, invented a kind of novel method of synthesis ammonia system ammonia synthesis cold recovery.This technique had both solved synthetic ammonia installation liquefied ammonia cold recovery problem, had solved again the problem of existing freezing plant ammonia in summer tank superpressure.Summer, ammonia tank superpressure, affected safety in production, and a large amount of gas ammonias is discharged in atmosphere and goes, and caused production cost to increase, contaminate environment.This technique provides a kind of can reduce ammonia pressure tank, and stably manufactured can reduce again the novel method of ice maker energy consumption of compressor.
For achieving the above object, the present invention adopts following technical scheme:
A novel method for synthesis ammonia system ammonia synthesis cold recovery, comprises the following steps:
(1) gas ammonia that ammonia compressor compression is sent here is through ammonia condenser condensation;
(2) liquefied ammonia of ammonia condenser condensation (hot ammonia) enters refrigeration system liquid ammonia storage tank condenser;
(3) liquefied ammonia through liquefied ammonia condenser condenses enters liquid ammonia storage tank part;
(4) liquefied ammonia in liquid ammonia storage tank is for downstream ammonia user;
(5) non-condensable gas in liquid ammonia storage tank send torch after non-condensable gas water cooler cools back receiving portions ammonia;
(6) liquefied ammonia that ammonia synthesis system reaction generates enters refrigeration system liquid ammonia storage tank condenser through the synthetic ammonia system of putting;
(7) liquefied ammonia (cold ammonia) that synthesis system produces in liquid ammonia storage tank condenser with liquefied ammonia (hot ammonia) heat exchange of ammonia condenser condensation, reclaim the cold of the liquefied ammonia that ammonia synthesis system reaction generates;
(8) liquefied ammonia (cold ammonia) that synthesis system produces send downstream user after reclaiming cold.
The described synthesis ammonia system ammonia synthesis liquefied ammonia cold recovery novel method of utilizing, can reduce ammonia pressure tank, and stably manufactured, can reduce ice maker energy consumption of compressor again.
Advantage of the present invention:
(1) the present invention utilizes synthesis ammonia system ammonia synthesis liquefied ammonia cold recovery, has solved the problem of synthesis ammonia system production in summer ammonia tank superpressure, the frequent take-off of safety valve, accomplishes production process non-pollutant discharge, has solved the problem of existing production technique contaminate environment;
(2) utilize the present invention, can reduce ammonia pressure tank, reduce ice maker energy consumption of compressor;
(3) synthetic ammonia production in summer, due to the frequent superpressure of ammonia tank, is forced to reduce produce and loads.Employing the invention solves ammonia tank On The Problem Of Overpressure, has stablized production, has increased benefit;
(4) select the present invention, processing parameter is stable, easy to operate, has improved the security of device operation.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiment 1
Referring to accompanying drawing, provide the specific embodiment of the present invention production equipment of 300,000 tons/year of synthetic ammonia of a set of annual output (take be example):
Because ammonia synthesis is put and is dissolved part hydrogen, nitrogen in ammonia, in the liquefied ammonia that freezer condenser condensation is got off, also contain part non-condensable gas, for improving heat transfer effect, traditional cold recovery technique is all to utilize the liquefied ammonia and synthetic ammonia heat exchange, the recovery cold put of the outlet of ice maker ammonia tank.The present invention adopts a kind of high-performance heat exchanger, and the heat exchange mode before changing, invents a kind of new heat-exchanging process flow process, greatly reduces the pressure of ammonia tank, namely reduces the pressure of ice maker outlet, thereby reduces ice maker consumption, reaches energy-conservation object.Concrete technology flow process is: the gas ammonia of being sent here by ice maker is condensed into the liquefied ammonia of 40 ℃ in condenser, enter liquid ammonia storage tank condenser,-6 ℃ of liquefied ammonia heat exchange of putting ammonia with ammonia synthesis, the liquefied ammonia temperature of liquid ammonia storage tank condenser is reduced to 17 ~ 20 ℃ and is entered ammonia storage tank, synthetic liquefied ammonia temperature re-heat of putting ammonia for be 20 ~ 25 ℃ for downstream user.
Main technique index in the present embodiment:
1, synthetic liquefied ammonia temperature of putting ammonia :-6 ℃;
2, synthesize the temperature after the liquefied ammonia re-heat of putting ammonia: 20 ~ 25 ℃
3, ice maker top hole pressure: 1.0-1.1 MPa;
4, ice maker ammonia pressure of storage tank: 1.0-1.1 MPa;
5, ammonia storage tank condensator outlet liquefied ammonia temperature: 17-20 ℃;
The present invention compares with traditional flow process, ammonia pressure tank decline 0.5MPa, ice maker top hole pressure decline 0.5MPa, drive the steam turbine steam consumption of ice maker to decline 4 tons/hour, steam per ton is by 180 yuan/ton, and 1 year by 8000 hours, and the whole year can the about Renminbi of steam saving expense 5,760,000 yuan.
Claims (2)
1. a novel method for synthesis ammonia system ammonia synthesis cold recovery, is characterized in that comprising the following steps:
(1) gas ammonia that ammonia compressor compression is sent here is through ammonia condenser condensation;
(2) liquefied ammonia that ammonia condenser condensation is got off enters refrigeration system liquid ammonia storage tank condenser;
(3) liquefied ammonia through liquefied ammonia condenser condenses enters liquid ammonia storage tank;
(4) liquefied ammonia in liquid ammonia storage tank is for downstream ammonia user;
(5) non-condensable gas in liquid ammonia storage tank send torch after non-condensable gas water cooler cools back receiving portions ammonia;
(6) liquefied ammonia that ammonia synthesis system reaction generates, the ammonia system of putting through synthetic, enters refrigeration system liquid ammonia storage tank condenser;
(7) liquefied ammonia that synthesis system produces in liquid ammonia storage tank condenser with the liquefied ammonia heat exchange of ammonia condenser condensation, reclaim the cold of the liquefied ammonia that ammonia synthesis system reaction generates;
(8) liquefied ammonia that synthesis system produces send downstream user after reclaiming cold.
2. the novel method of a kind of synthesis ammonia system ammonia synthesis cold recovery according to claim 1, it is characterized in that the liquefied ammonia described in step (2) is hot ammonia, the described liquefied ammonia of step (6) is cold ammonia, the liquefied ammonia that synthesis system described in step (7) produces is cold ammonia, with the liquefied ammonia of ammonia condenser condensation be hot ammonia, the liquefied ammonia that reclaims ammonia synthesis system reaction generation is cold ammonia, and the liquefied ammonia that the synthesis system described in step (8) produces is cold ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716935.5A CN103754894B (en) | 2013-12-21 | 2013-12-21 | Method for recycling ammonia synthesis cold energy in synthetic ammonia system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716935.5A CN103754894B (en) | 2013-12-21 | 2013-12-21 | Method for recycling ammonia synthesis cold energy in synthetic ammonia system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103754894A true CN103754894A (en) | 2014-04-30 |
| CN103754894B CN103754894B (en) | 2017-02-01 |
Family
ID=50522262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310716935.5A Active CN103754894B (en) | 2013-12-21 | 2013-12-21 | Method for recycling ammonia synthesis cold energy in synthetic ammonia system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103754894B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766351A (en) * | 2017-01-18 | 2017-05-31 | 文安县天澜新能源有限公司 | A kind of method and apparatus for eliminating synthesis ammonia freezing post liquid ammonia storage tank emptying |
| CN109231237A (en) * | 2018-10-23 | 2019-01-18 | 重庆建峰化工股份有限公司 | A kind of operation method of KBR ammonia synthesis process flash distillation gas ammonia pressurization refrigeration system |
| CN114427484A (en) * | 2021-12-31 | 2022-05-03 | 华中科技大学 | Direct air cooling system for ammonia-doped power plant by using ammonia cooling energy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1750649A (en) * | 1927-03-12 | 1930-03-18 | Chemical Engineering Corp | Synthetic production of ammonia |
| CN101659420A (en) * | 2009-08-07 | 2010-03-03 | 上海国际化建工程咨询公司 | Method and device for drying and purifying ammonia synthetic fresh gas |
-
2013
- 2013-12-21 CN CN201310716935.5A patent/CN103754894B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1750649A (en) * | 1927-03-12 | 1930-03-18 | Chemical Engineering Corp | Synthetic production of ammonia |
| CN101659420A (en) * | 2009-08-07 | 2010-03-03 | 上海国际化建工程咨询公司 | Method and device for drying and purifying ammonia synthetic fresh gas |
Non-Patent Citations (5)
| Title |
|---|
| 廖永平等: "《危险化学品安全生产标准：合订本》", 30 June 2011, 煤炭工业出版社 * |
| 王初华: "小合成氨厂冷量探讨", 《江苏化工》 * |
| 瞿显佩: "利用合成液氨和气氨冷却铜液", 《化工设计通讯》 * |
| 胡耀元等: "液氨等焓节流效应", 《化工学报》 * |
| 谭小术等: "制冷压缩机出口气氨冷却***的改造", 《中氮肥》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766351A (en) * | 2017-01-18 | 2017-05-31 | 文安县天澜新能源有限公司 | A kind of method and apparatus for eliminating synthesis ammonia freezing post liquid ammonia storage tank emptying |
| CN109231237A (en) * | 2018-10-23 | 2019-01-18 | 重庆建峰化工股份有限公司 | A kind of operation method of KBR ammonia synthesis process flash distillation gas ammonia pressurization refrigeration system |
| CN109231237B (en) * | 2018-10-23 | 2021-08-27 | 重庆建峰化工股份有限公司 | Operation method of flash gas ammonia pressurization refrigeration system of KBR (KBR) synthetic ammonia process |
| CN114427484A (en) * | 2021-12-31 | 2022-05-03 | 华中科技大学 | Direct air cooling system for ammonia-doped power plant by using ammonia cooling energy |
| CN114427484B (en) * | 2021-12-31 | 2022-12-02 | 华中科技大学 | Direct air cooling system for ammonia-doped power plant by using ammonia cooling energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103754894B (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202675796U (en) | Device utilizing liquefied Natural Gas (LNG) cold energy to produce liquid air separation products | |
| WO2014114264A1 (en) | Natural gas isobaric liquefaction equipment | |
| CN104236252A (en) | Method and device for preparing liquid CO2 (carbon diode) by cold energy of LNG (liquefied natural gas) | |
| CN105180595A (en) | System and method for preparing hydrogen rich gas and liquid methane | |
| CN103754894A (en) | Novel method for recycling ammonia synthesis cold energy in synthetic ammonia system | |
| WO2014114267A1 (en) | Isobaric liquefaction device for natural gas | |
| CN104110940A (en) | Efficient air separation device utilizing liquefied natural gas cold energy | |
| CN203534058U (en) | Liquid argon storage groove gasified argon recovery device | |
| CN103881781A (en) | Marsh gas membrane separation methane purifying technology | |
| CN104251600A (en) | Liquid nitrogen washing device | |
| CN103900346A (en) | Method and device for liquefying carbon dioxide generated through efficient gas source heat pump in cold and hot combination mode | |
| CN110017628A (en) | A kind of LNG cold energy use system and method based on argon circulation | |
| CN102977910B (en) | System and method for light hydrocarbon recovery | |
| CN101871717B (en) | Complete equipment for CO2 recycling with CO2 vaporization and cool recycling device | |
| CN105569754B (en) | The method and environment thermal energy working system externally done work using environment thermal energy | |
| CN103288085A (en) | Dry ice generator using cold energy produced in vaporization of cryogenic liquid | |
| CN201052970Y (en) | Purge gas device for refrigerating and reclaiming synthesis ammonia by using mixing working substance | |
| CN102538394B (en) | Method for separating ammonia and carbon dioxide by low-temperature rectification | |
| CN202442545U (en) | Traditional piston single heat source closed refrigeration system | |
| CN104651004A (en) | Energy-saving coal-based natural gas process | |
| CN205155544U (en) | LPG ordinary pressure low temperature is stored and storage device is united to normal atmospheric temperature pressure | |
| CN204240704U (en) | A kind of air separation unit with the air inlet of supplementary pressure nitrogen | |
| CN203572142U (en) | Argon recycling device | |
| CN103486823A (en) | Movable oilfield nitrogen making liquefaction device | |
| CN208975196U (en) | A kind of open type heat pump system of propylene refrigeration system and C3 knockout tower composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20140430 Assignee: Anhui Xingtai Financial Leasing Co.,Ltd. Assignor: GNSG ANHUI HONG SIFANG Co.,Ltd. Contract record no.: X2021340000008 Denomination of invention: A recovery method of ammonia synthesis cooling capacity in ammonia synthesis system Granted publication date: 20170201 License type: Exclusive License Record date: 20210518 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A recovery method of ammonia synthesis cooling capacity in ammonia synthesis system Effective date of registration: 20210527 Granted publication date: 20170201 Pledgee: Anhui Xingtai Financial Leasing Co.,Ltd. Pledgor: GNSG ANHUI HONG SIFANG Co.,Ltd. Registration number: Y2021980004042 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |