CN205445703U - High pressure liquid ammonia pressure energy recovery system - Google Patents
High pressure liquid ammonia pressure energy recovery system Download PDFInfo
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- CN205445703U CN205445703U CN201620132109.5U CN201620132109U CN205445703U CN 205445703 U CN205445703 U CN 205445703U CN 201620132109 U CN201620132109 U CN 201620132109U CN 205445703 U CN205445703 U CN 205445703U
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Abstract
The utility model discloses a high pressure liquid ammonia pressure energy recovery system. Include: the primary heater, the secondary heater passes through the tube coupling with the primary heater, the expander passes through the tube coupling with the secondary heater, acting equipment is with the output shaft of expander to utilize the ammonia acting. The technical scheme of the utility model the advantage be: can effectively utilize the low -grade energy of mill, drive the generator through the expander and generate electricity, the generating efficiency is high, and is energy -concerving and environment -protective.
Description
Technical field
This utility model relates to pressure can particularly relate to a kind of high-pressure liquid ammonia pressure energy recovery system with the recycling field of heat.
Background technology
The purposes of ammonia is quite varied.Multiple nitrogenous fertilizer can be produced with ammonia for raw material, such as carbamide, ammonium sulfate, ammonium nitrate, ammonium hydrogen carbonate etc., also can produce multiple compound fertilizer, such as phosphate fertilizer etc..Ammonia is also the important raw material of industry, can participate in forming nitric acid, soda and various inorganic salt containing nitrogen.
The raw material of synthesis ammonia is hydrogen and nitrogen.In ammonia synthesis process, high-pressure process, middle-pressure process and low-pressure process can be divided into according to operation pressure.Owing to middle-pressure process has advantage technically and economically, therefore the small-sized synthesis ammonia plant of most domestic mainly uses middle-pressure process to carry out ammonia synthesis.After ammonia synthesis reaction terminates, synthesis gas is discharged by synthetic tower, the cooled high-pressure liquid ammonia of isolating of synthesis gas, and the pressure that high-pressure liquid ammonia is decompressed to about 2MPa by choke valve enters storage tank storage.Generally, the high-pressure liquid ammonia that synthesis gas separates with a lot of heats and pressure energy, prior art lacks to the means effectively utilized, cause waste greatly.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of high-pressure liquid ammonia pressure energy recovery system that can make full use of the heat energy entrained by high-pressure liquid ammonia and pressure.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, including:
For the heater that liquefied ammonia is heated, described liquefied ammonia is made to become ammonia；
For described ammonia is expanded the decompressor that decrease temperature and pressure processes, it is connected by pipeline with described heater；
Work device, is connected with the output shaft of described decompressor, to utilize described ammonia to do work；
Expand the ammonia after decrease temperature and pressure processes for cooling down, make described ammonia become the cooling device of liquefied ammonia, be connected by pipeline with described decompressor.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, including:
For the primary heater that liquefied ammonia is heated；
Liquefied ammonia after heating primary heater carries out post bake, makes described liquefied ammonia become the secondary heater of ammonia, is connected by pipeline with described primary heater；
For described ammonia is expanded the decompressor that decrease temperature and pressure processes, it is connected by pipeline with described secondary heater；
Work device, is connected with the output shaft of described decompressor, to utilize described ammonia to do work；
Expand the ammonia after decrease temperature and pressure processes for cooling down, make described ammonia become the cooling device of liquefied ammonia, be connected by pipeline with described decompressor.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, described primary heater, secondary heater are electric heater or heating furnace.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, described primary heater, secondary heater are low-grade heat source heater, heating medium in described primary heater, secondary heater is steam, described primary heater is identical with the structure of secondary heater, and in described primary heater, the temperature of steam is less than the vapor (steam) temperature in secondary heater.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, described primary heater includes that heat exchange chamber, one end connect with steam pipe system and the other end stretches into intake line and the output pipe of described heat exchange chamber, described heat exchange chamber is stretched in one end of described output pipe, the other end of described output pipe connects with lime set pipe network, for carrying the defeated ammonia pipeline of described liquefied ammonia through described heat exchange chamber, with the steam utilizing described heat exchanging chamber indoor, described liquefied ammonia is heated.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, described primary heater also includes steam condensate tank and the lime set pipeline being installed on described output pipe, one end of described lime set pipeline connects with described intake line, and the other end of described lime set pipeline connects with described steam condensate tank.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, described primary heater includes the first sub-heater of multiple serial or parallel connection, described secondary heater includes that the second sub-heater of multiple serial or parallel connection, described first sub-heater, described second sub-heater are low-grade heat source heater or electric heater or heating furnace.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, described decompressor is screw expander or turbo-expander or turbo-expander or Piston Expander, and described work device is electromotor or compressor or pump, and described cooling device is water cooler or air cooler or refrigeration machine.
The advantage of the technical solution of the utility model is: can effectively utilize the low-grade energy of factory, drives electrical power generators by decompressor, and generating efficiency is high, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment one of high-pressure liquid ammonia pressure energy recovery system of the present utility model；
Fig. 2 is the structural representation of primary heater in Fig. 1；
Fig. 3 is the structural representation of the primary heater of the embodiment two of high-pressure liquid ammonia pressure energy recovery system of the present utility model.
Detailed description of the invention
Embodiment one
As shown in Figure 1 and Figure 2, the embodiment of high-pressure liquid ammonia pressure energy recovery system of the present utility model, including:
For the primary heater E1 that liquefied ammonia is heated；
Liquefied ammonia after heating primary heater E1 carries out post bake, makes liquefied ammonia become the secondary heater E3 of ammonia, is connected by pipeline with primary heater E1；
For ammonia is expanded the decompressor ET1 that decrease temperature and pressure processes, it is connected by pipeline with secondary heater E3；
Work device M, is connected with the output shaft of decompressor ET1, to utilize ammonia to do work；
Expand the ammonia after decrease temperature and pressure processes for cooling down, make ammonia become the cooling device E2 of liquefied ammonia, be connected by pipeline with decompressor ET1.
The embodiment one utilizing high-pressure liquid ammonia pressure energy recovery system of the present utility model carries out high-pressure liquid ammonia pressure energy recovery process of the present utility model, including below step:
First by 40 DEG C, the liquefied ammonia of 80bar (a) imports primary heater E1 by pipeline 1, it is heated to about 130 DEG C, then secondary heater E3 is entered by pipeline 2, it is heated to about 170 DEG C, final liquefied ammonia becomes the ammonia of High Temperature High Pressure, ammonia enters decompressor ET1 by pipeline 3 and expands decrease temperature and pressure to 49 DEG C, 18bar (a), meanwhile, decompressor ET1 output shaft work drives work device M (electromotor) generating, and the ammonia after expansion enters cooling device E2 (water cooler) by pipeline 4 and is cooled to about 40 DEG C and is liquefied as liquefied ammonia.
The embodiment of high-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, primary heater E1, secondary heater E3 are low-grade heat source heater, heating medium in primary heater E1, secondary heater E3 is steam, primary heater E1, secondary heater E3 structure identical, the temperature of the steam in primary heater E1 is less than the vapor (steam) temperature in secondary heater E3.
The embodiment of high-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, primary heater E1 includes that heat exchange chamber 20, one end connect with steam pipe system and the other end stretches into intake line 21 and the output pipe 22 of heat exchange chamber 20, heat exchange chamber 20 is stretched in one end of output pipe 22, the other end of output pipe 22 connects with lime set pipe network, for carrying the defeated ammonia pipeline of liquefied ammonia through heat exchange chamber 20, to utilize the steam in heat exchanging chamber room 20 that liquefied ammonia is heated.
The embodiment of high-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, primary heater E1 also includes steam condensate tank 23 and the lime set pipeline 24 being installed on output pipe, one end of lime set pipeline 24 connects with intake line 21, and the other end of lime set pipeline 24 connects with steam condensate tank 23.
The embodiment of high-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, intake line 21 is provided with primary scene thermometer 31, primary scene Pressure gauge 41.
Secondary scene thermometer 32, secondary scene Pressure gauge 42 and on-the-spot liquidometer 50 are installed on steam condensate tank 23.
In the other embodiments of high-pressure liquid ammonia pressure energy recovery system of the present utility model, the heating medium in primary heater, secondary heater is can be plant gas, hot water or flue gas.
Embodiment two
The present embodiment differs only in the different of heater from embodiment one, in the present embodiment, primary heater, secondary heater are electric heater, primary heater, secondary heater structure identical, the heating-up temperature of primary heater is less than the heating-up temperature of secondary heater.
As it is shown on figure 3, primary heater includes heat exchange cavity 60 and stretches into many of heat exchange cavity 60 and add thermal resistance 61, for carrying the defeated ammonia pipeline of liquefied ammonia through heat exchange cavity 60, to utilize the thermal resistance 61 that adds in heat exchanging chamber body 60 that liquefied ammonia is heated.
Embodiment three
The present embodiment differs only in the different of cooling device from embodiment one, in the present embodiment, cooling device includes ice chest, coolant compressor and choke valve, coolant compressor carries the cold-producing medium compressed by the first pipeline to choke valve, cold-producing medium transports to coolant compressor by the second pipeline after being throttled valve throttling cooling, by the first pipeline, second pipeline, cold-producing medium circulates between coolant compressor and choke valve, first pipeline, second pipeline is respectively through ice chest, ice chest is connected by pipeline with decompressor, so that becoming liquefied ammonia after ammonia cooling, cold-producing medium in first pipeline cools down in ice chest, cold-producing medium in second pipeline provides cold in ice chest.
Embodiment four
The present embodiment only has one with the heater that differs only in of embodiment one, the high-pressure liquid ammonia pressure energy recovery system of the present embodiment, including:
For the heater that liquefied ammonia is heated, described liquefied ammonia is made to become ammonia；
For described ammonia is expanded the decompressor that decrease temperature and pressure processes, it is connected by pipeline with described heater；
Work device, is connected with the output shaft of described decompressor, to utilize described ammonia to do work；
Expand the ammonia after decrease temperature and pressure processes for cooling down, make described ammonia become the cooling device of liquefied ammonia, be connected by pipeline with described decompressor.
In the other embodiments of high-pressure liquid ammonia pressure energy recovery system of the present utility model, described primary heater, secondary heater are heating furnace.
In the other embodiments of high-pressure liquid ammonia pressure energy recovery system of the present utility model, described primary heater includes the first sub-heater of multiple serial or parallel connection, described secondary heater includes that the second sub-heater of multiple serial or parallel connection, described first sub-heater, described second sub-heater are low-grade heat source heater or electric heater or heating furnace.
In the other embodiments of high-pressure liquid ammonia pressure energy recovery system of the present utility model, described decompressor is screw expander or turbo-expander or turbo-expander or Piston Expander.
In the other embodiments of high-pressure liquid ammonia pressure energy recovery system of the present utility model, wherein, work device is electromotor or compressor or pump, and described cooling device is air cooler or refrigeration machine.
High-pressure liquid ammonia pressure energy recovery process includes following operation: 1, heating process；2 ,-generating operation is expanded；3, refrigerating work procedure.
Heating process is: the heated ammonia becoming High Temperature High Pressure of high-pressure liquid ammonia；Expanding-generate electricity operation is: the ammonia of High Temperature High Pressure enters gaseous state or the ammonia of gas-liquid mixed state that expander is low-temp low-pressure, and decompressor output shaft drives TRT generating simultaneously；Refrigerating work procedure is: the gaseous state of low-temp low-pressure or the ammonia of gas-liquid mixed state, after supercooling, become the liquefied ammonia of Room-temperature low-pressure, enters low pressure storage tank and stores.
High-pressure liquid ammonia pressure energy recovery system of the present utility model is also applied for R134a, R11, R12, R22, R23, carbon dioxide, propane, propylene, normal butane, the pressure of iso-butane can reclaim.
High-pressure liquid ammonia pressure energy recovery system of the present utility model, high-pressure liquid ammonia be finger pressure be 50～1000bar liquefied ammonia, low pressure liquefied ammonia be finger pressure be 5～30bar liquefied ammonia.
The utility model has the advantages that: can effectively utilize the low-grade energy of factory, driving electrical power generators by decompressor, generating efficiency is high, energy-conserving and environment-protective.
Below it is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from this utility model principle; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. a high-pressure liquid ammonia pressure energy recovery system, it is characterised in that including:
For the heater that liquefied ammonia is heated, described liquefied ammonia is made to become ammonia；
For described ammonia is expanded the decompressor that decrease temperature and pressure processes, it is connected by pipeline with described heater；
Work device, is connected with the output shaft of described decompressor, to utilize described ammonia to do work；
Expand the ammonia after decrease temperature and pressure processes for cooling down, make described ammonia become the cooling device of liquefied ammonia, be connected by pipeline with described decompressor.
2. a high-pressure liquid ammonia pressure energy recovery system, it is characterised in that including:
For the primary heater that liquefied ammonia is heated；
Liquefied ammonia after heating primary heater carries out post bake, makes described liquefied ammonia become the secondary heater of ammonia, is connected by pipeline with described primary heater；
For described ammonia is expanded the decompressor that decrease temperature and pressure processes, it is connected by pipeline with described secondary heater；
Work device, is connected with the output shaft of described decompressor, to utilize described ammonia to do work；
Expand the ammonia after decrease temperature and pressure processes for cooling down, make described ammonia become the cooling device of liquefied ammonia, be connected by pipeline with described decompressor.
3. high-pressure liquid ammonia pressure energy recovery system as claimed in claim 2, it is characterised in that described primary heater, secondary heater are electric heater or heating furnace.
4. high-pressure liquid ammonia pressure energy recovery system as claimed in claim 2, it is characterized in that, described primary heater, secondary heater are low-grade heat source heater, heating medium in described primary heater, secondary heater is steam, described primary heater is identical with the structure of secondary heater, and in described primary heater, the temperature of steam is less than the vapor (steam) temperature in secondary heater.
5. high-pressure liquid ammonia pressure energy recovery system as claimed in claim 4, it is characterized in that, described primary heater includes that heat exchange chamber, one end connect with steam pipe system and the other end stretches into intake line and the output pipe of described heat exchange chamber, described heat exchange chamber is stretched in one end of described output pipe, the other end of described output pipe connects with lime set pipe network, for carrying the defeated ammonia pipeline of described liquefied ammonia through described heat exchange chamber, with the steam utilizing described heat exchanging chamber indoor, described liquefied ammonia is heated.
6. high-pressure liquid ammonia pressure energy recovery system as claimed in claim 5, it is characterized in that, described primary heater also includes steam condensate tank and the lime set pipeline being installed on described output pipe, one end of described lime set pipeline connects with described intake line, and the other end of described lime set pipeline connects with described steam condensate tank.
7. high-pressure liquid ammonia pressure energy recovery system as claimed in claim 2, it is characterized in that, described primary heater includes the first sub-heater of multiple serial or parallel connection, described secondary heater includes that the second sub-heater of multiple serial or parallel connection, described first sub-heater, described second sub-heater are low-grade heat source heater or electric heater or heating furnace.
8. high-pressure liquid ammonia pressure energy recovery system as claimed in claim 2, it is characterized in that, described decompressor is screw expander or turbo-expander or turbo-expander or Piston Expander, described work device is electromotor or compressor or pump, and described cooling device is water cooler or air cooler or refrigeration machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620132109.5U CN205445703U (en) | 2016-02-21 | 2016-02-21 | High pressure liquid ammonia pressure energy recovery system |
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| CN201620132109.5U CN205445703U (en) | 2016-02-21 | 2016-02-21 | High pressure liquid ammonia pressure energy recovery system |
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| CN205445703U true CN205445703U (en) | 2016-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545394A (en) * | 2016-02-21 | 2016-05-04 | 北京中科瑞奥能源科技股份有限公司 | High-pressure liquid ammonia pressure energy recovery process and recovery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545394A (en) * | 2016-02-21 | 2016-05-04 | 北京中科瑞奥能源科技股份有限公司 | High-pressure liquid ammonia pressure energy recovery process and recovery system |
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| C14 | Grant of patent or utility model | ||
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Address after: 100085 Beijing city Haidian District Anning Zhuang three No. 9 Building 1 layer 4 1 unit 408 Patentee after: In Keruiao energy Polytron Technologies Inc Patentee after: Yunnan Jiehua Chem Group Co., Ltd. Address before: 100085 Beijing city Haidian District Anning Zhuang three No. 9 Building 1 layer 4 1 unit 408 Patentee before: BEIJING ZHONGKE RUIAO ENERGY TECHNOLOGY CO., LTD. Patentee before: Yunnan Jiehua Chem Group Co., Ltd. |