CN203959839U - A kind of Ammonia Production device by utilizing waste heat recovery system - Google Patents
A kind of Ammonia Production device by utilizing waste heat recovery system Download PDFInfo
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- CN203959839U CN203959839U CN201420231430.XU CN201420231430U CN203959839U CN 203959839 U CN203959839 U CN 203959839U CN 201420231430 U CN201420231430 U CN 201420231430U CN 203959839 U CN203959839 U CN 203959839U
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- Prior art keywords
- preheater
- low change
- natural gas
- waste heat
- low
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—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
- Y02P20/10—Process efficiency
-
- 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
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model relates to a kind of Ammonia Production device by utilizing waste heat recovery system, comprises low change stove, low change feed water preheater, natural gas preheater, de-salted water preheater, low change water cooler, waste heat boiler, desulfurizer, gas heating furnace and deaerator; Low change stove, low change feed water preheater, natural gas preheater, de-salted water preheater and low change water cooler are connected successively; The outlet spout of described low change feed water preheater is connected with waste heat boiler; The Sweet natural gas of described natural gas preheater is imported and exported and is connected with desulfurizer, gas heating furnace respectively; Described de-salted water preheater outlet is connected with deaerator.Ammonia Production device by utilizing waste heat recovery system of the present utility model, Sweet natural gas in natural gas line is carried out to preheating, improved UTILIZATION OF VESIDUAL HEAT IN efficiency, alleviate low change water cooler load, reduce decarburization unstripped gas inlet air temperature, improved the yield of decarbonizing section nitrogen and hydrogen.
Description
Technical field
The utility model relates to a kind of Ammonia Production device, particularly a kind of Ammonia Production device by utilizing waste heat recovery system.
Background technology
In prior art, low changing air goes out low change stove by too low change feed water preheater and de-salted water preheater, for low change feedwater and de-salted water heating; Finally by the cooling of too low change water cooler, when going out low change stove 200 ℃ of temperature are reduced to 40 ℃ of left and right, meet the technic index requirement of decarbonizing section to gas temperature.But in production practice, the heat demand of low change stove feed water preheater, de-salted water preheater is less, temperature reducing effect for low changing air is less, low change water cooler load is excessive in process of production, must increase cooling water flow in a large amount of low change water coolers, could effectively control low changing air temperature, and the technic index of final low changing air is unstable, and the heat that in low change water cooler, water coolant is taken away is also difficult to be utilized.So, need a kind of waste-heat recovery device system that can make full use of heat in low changing air.
Utility model content
Goal of the invention of the present utility model is: for the problem that in prior art, low changing air heat is not fully used, provide a kind of low changing air waste-heat recovery device system.
To achieve these goals, the technical solution adopted in the utility model is:
An Ammonia Production device by utilizing waste heat recovery system, comprises low change stove, low change feed water preheater, natural gas preheater, de-salted water preheater, low change water cooler, waste heat boiler, desulfurizer, gas heating furnace and deaerator.
Low change stove, low change feed water preheater, natural gas preheater, de-salted water preheater and low change water cooler are connected successively.
The outlet spout of described low change feed water preheater is connected with waste heat boiler.
The Sweet natural gas of described natural gas preheater is imported and exported and is connected with desulfurizer, gas heating furnace respectively.
Described de-salted water preheater outlet is connected with deaerator.
Further, described low change stove is the low change stove in synthetic ammonia process.
Further, described low change feed water preheater is for utilizing low changing air heat into feedwater primary heater unit.
Further, described natural gas preheater is the preheater of desulfurization of raw material Sweet natural gas.Sweet natural gas is the unstripped gas of Ammonia Production, and preheating Sweet natural gas can reduce the consumption of gas-firing, and the heat producing in building-up process is utilized more fully.
Further, the refrigerating unit that described low change water cooler is low changing air guarantees that low changing air temperature when entering decarbonizing section is reduced within the scope of technic index.The low changing air producing by low change stove has the advantages that temperature is high, and the energy containing in low changing air is huge, if can not well be utilized, will cause great waste.Low change feed water preheater can obtain the waste heat boiler feedwater of comparatively high temps to feed-water preheating.
Natural gas preheater of the present utility model, has improved the heat utilization ratio of low changing air, has improved the consumption of low change water coolant.In order to meet the requirement of decarbonizing section to low changing air temperature, make full use of low changing air waste heat, the heat exchange gas device newly increasing utilizes low change to work off one's feeling vent one's spleen to entering Sweet natural gas preheating before gas heating furnace, to enter gas heating furnace coil pipe natural gas temperature from 38 ℃, bring up to 118 ℃, the heat of low changing air is effectively transferred in gas heating furnace, reduces the consumption of gas-firing.
As preferred version of the present utility model, described natural gas preheater is floating head heat exchanger, fixed tube sheet heat exchanger, U-shaped tubular sheet heat exchanger or plate-type heat exchanger.The Sweet natural gas inlet mouth of natural gas preheater is connected with desulfurizer outlet, and Sweet natural gas after desulfurization, enters preheater and is heated in desulfurizer, obtains the hot Sweet natural gas of desulfurization.The heat in low changing air that utilized gas heating furnace effective recycling, improves the thermal content of unit volume Sweet natural gas, has reduced the use of gas-firing, has saved cost.
As preferred version of the present utility model, the outlet conduit of described low change water cooler is connected with needing the low-temp reaction still of water preheat.The outlet conduit water temperature that low change water cooler produces is not too high, and the reactor higher for temperature can not effectively heat, but is not that too high reactor but can play just right heats for temperature of reaction.Can promote the heat utilization ratio of low change stove in ammonia synthesizer.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1. low changing air waste-heat recovery device system of the present utility model, will enter gas heating furnace coil pipe natural gas temperature from 38 ℃, bring up to 118 ℃, improve UTILIZATION OF VESIDUAL HEAT IN efficiency.
2. waste-heat recovery device system, alleviates low change water cooler load, reduces decarburization unstripped gas inlet air temperature, has improved the yield of decarbonizing section nitrogen and hydrogen.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The low change stove of mark in figure: 101-, the low change feed water preheater of 102-, 103-natural gas preheater, 104-de-salted water preheater, the low change water cooler of 105-, 2-waste heat boiler, 3-desulfurizer, 4-gas heating furnace, 5-salt solution deaerator.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Ammonia Production device by utilizing waste heat recovery system, comprises low change stove 101, low change feed water preheater 102, natural gas preheater 103, de-salted water preheater 104, low change water cooler 105.After low change stove, be provided with low change feed water preheater and connect by pipeline, after low change feed water preheater, be provided with natural gas preheater and connect by pipeline, after natural gas preheater, be provided with de-salted water preheater and connect by pipeline, after de-salted water preheater, be provided with low change water cooler and be connected by pipeline, described connecting tube is low changing air circulation duct.
When system is moved: open low change stove, synthetic ammonia installation operation, the low changing air of generation, from outlet is flowed out, enters low change feed water preheater and carries out heat exchange with low change feedwater, by the low change heat exchange temperature that touches the mark that feeds water.Then, low changing air flows out from low change feed water preheater, enter natural gas preheater, with fuel natural gas heat exchange, by heated by natural gas, to approximately 118 ℃, Sweet natural gas is the heating flame fuel of reactor, and preheating Sweet natural gas can make itself to carry a large amount of heats, and this part heat can be applied directly to by the burning of Sweet natural gas adding of pyroreaction still to be hankered, and the scope of utilizing of heat is expanded greatly.The low changing air flowing out from natural gas preheater is more successively through de-salted water preheater, low change water cooler heat exchange cooling, and outlet temperature is reduced to 40 ℃ of left and right.The low changing air that temperature is 40 ℃ meets the technic index requirement of decarbonizing section to gas temperature, and process stabilizing performance is good.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. an Ammonia Production device by utilizing waste heat recovery system, comprises low change stove, low change feed water preheater, natural gas preheater, de-salted water preheater, low change water cooler, waste heat boiler, desulfurizer, gas heating furnace and deaerator;
Low change stove, low change feed water preheater, natural gas preheater, de-salted water preheater and low change water cooler are connected successively;
The outlet spout of described low change feed water preheater is connected with waste heat boiler;
The Sweet natural gas of described natural gas preheater is imported and exported and is connected with desulfurizer, gas heating furnace respectively;
Described de-salted water preheater outlet is connected with deaerator.
2. Ammonia Production device by utilizing waste heat recovery system according to claim 1, is characterized in that, described natural gas preheater is floating head heat exchanger, fixed tube sheet heat exchanger or U-shaped tubular sheet heat exchanger.
3. Ammonia Production device by utilizing waste heat recovery system according to claim 1, is characterized in that, the outlet conduit of described low change water cooler is connected with needing the low-temp reaction still of water preheat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231430.XU CN203959839U (en) | 2014-05-07 | 2014-05-07 | A kind of Ammonia Production device by utilizing waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231430.XU CN203959839U (en) | 2014-05-07 | 2014-05-07 | A kind of Ammonia Production device by utilizing waste heat recovery system |
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| Publication Number | Publication Date |
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| CN203959839U true CN203959839U (en) | 2014-11-26 |
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| CN201420231430.XU Expired - Fee Related CN203959839U (en) | 2014-05-07 | 2014-05-07 | A kind of Ammonia Production device by utilizing waste heat recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947547A (en) * | 2017-03-21 | 2017-07-14 | 灵谷化工有限公司 | A kind of powdered coal pressuring gasified technique produces the steam self-support method of synthesis ammonia system |
-
2014
- 2014-05-07 CN CN201420231430.XU patent/CN203959839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947547A (en) * | 2017-03-21 | 2017-07-14 | 灵谷化工有限公司 | A kind of powdered coal pressuring gasified technique produces the steam self-support method of synthesis ammonia system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |