CN207259163U - It is a kind of to utilize the device for synthesizing ammonia relief gas production synthesis ammonia - Google Patents
It is a kind of to utilize the device for synthesizing ammonia relief gas production synthesis ammonia Download PDFInfo
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- CN207259163U CN207259163U CN201721085936.4U CN201721085936U CN207259163U CN 207259163 U CN207259163 U CN 207259163U CN 201721085936 U CN201721085936 U CN 201721085936U CN 207259163 U CN207259163 U CN 207259163U
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- washing tower
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Abstract
The utility model belongs to a kind of and utilizes the device for synthesizing ammonia relief gas production synthesis ammonia, including synthesizing ammonia relief gas pipeline, Ammonic washing tower, ammonia convertor, synthesis ammonia relief gas pipeline is connected with Ammonic washing tower import, the liquid-phase outlet of Ammonic washing tower is connected with ammonia water tank, gaseous phase outlet at the top of Ammonic washing tower passes through mole sieve drier, the tube side of First Heat Exchanger, the tube side of expanding machine and the second heat exchanger is connected with the import of rectifying column, the inner top of rectifying column is equipped with condenser, the liquid-phase outlet of rectifier bottoms is connected with the import of condenser, the outlet of condenser is connected by the first shell side of the second heat exchanger and the first shell side of First Heat Exchanger with boiler furnace；Have the advantages that device structure is simple, design rationally, operation control easily, utilize and synthesize ammonia relief gas production synthesis ammonia, reduce the waste of valuable gases in periodic off-gases and improve the utilization rate of syngas for synthetic ammonia.
Description
Technical field
The utility model belongs to Ammonia Production recovery technology field, and in particular to one kind is produced using ammonia relief gas is synthesized
Synthesize the device of ammonia.
Background technology
In ammonia synthesis process, the inert gas in system is not involved in reacting, its too high levels influences reaction in order to prevent
Conversion ratio is, it is necessary to be vented a part of gas after reaction, this portion gas is referred to as periodic off-gases.Domestic synthesis ammonia at present
Synthesis ammonia system is directly sent out after the periodic off-gases decompression of device, and is not had in periodic off-gases containing the complete hydrogen of a large amount of unreacteds, nitrogen
Have and active principle therein is made full use of, cause many wastings of resources.
Existing periodic off-gases recovery method uses mostly：Periodic off-gases decompression recycles ammonia through Ammonic washing tower, and Ammonic washing tower tail gas is again through hydrogen
Gas recovering device recycles hydrogen, and residual exhaust goes boiler combustion.The method major defect has：First, still closed in tail gas containing a large amount of
The effective gas component hydrogen of ammonification, nitrogen, cause energy waste；Second, hydrogen recovery rate is low, a large amount of hydrogen are still contained in tail gas.
Utility model content
There is provided that a kind of device structure is simple, sets the purpose of the utility model is to overcome the deficiencies in the prior art
Meter rationally, operation control easily, using synthesize ammonia relief gas production synthesis ammonia, reduce periodic off-gases in valuable gases waste and carry
The a kind of of the utilization rate of high syngas for synthetic ammonia utilizes the device for synthesizing ammonia relief gas production synthesis ammonia.
What the purpose of this utility model was realized in：Including synthesis ammonia relief gas pipeline, Ammonic washing tower, ammonia convertor, close
It is connected into ammonia relief gas pipeline with Ammonic washing tower import, the liquid-phase outlet of Ammonic washing tower is connected with ammonia water tank, the gas phase at the top of Ammonic washing tower
The import that outlet passes through the tube side and rectifying column of mole sieve drier, the tube side of First Heat Exchanger, expanding machine and the second heat exchanger
It is connected, the inner top of rectifying column is equipped with condenser, and the liquid-phase outlet of rectifier bottoms is connected with the import of condenser, condenser
Outlet is connected by the first shell side of the second heat exchanger and the first shell side of First Heat Exchanger with boiler furnace；At the top of rectifying column
Gas vent by the second shell side of the second heat exchanger and the second shell side of First Heat Exchanger with being compressed in centrifugal compressor
The import of section is connected, and centrifugal compressor includes the compression section of front end, and compression section is connected with the circulation section of end；
The reaction gas outlet of ammonia convertor passes through waste heat boiler, the shell side of the 3rd heat exchanger and water cooler and ammonia separator
Import is connected, and the liquid-phase outlet of ammonia separator bottom is connected with liquid ammonia storage tank, the gas vent at the top of ammonia separator with it is centrifugal
The air inlet of circulation section is connected in compressor, the tube side and ammonia that the circulation section gas outlet of centrifugal compressor passes through the 3rd heat exchanger
The air inlet of synthetic tower is connected.
Preferably, the first valve is installed on the synthesis ammonia relief gas pipeline.
Preferably, the second valve is installed between the import of the liquid-phase outlet and condenser of the rectifier bottoms.
The utility model, which can utilize, synthesizes ammonia relief gas production synthesis ammonia, reduces the waste of valuable gases in periodic off-gases,
Improve the utilization rate of syngas for synthetic ammonia；The utility model can compare the nitrogen in periodic off-gases and hydrogen reaction synthesis ammonia
General synthetic ammonia installation, due to the presence of Ammonic washing tower, entrance ammonia content is relatively low, and configures cryogenic purification technique and remove periodic off-gases
In inert gas methane, argon gas, ammonia synthesis reaction will have higher conversion ratio；With it is simple in structure, design rationally, operation control
System easily, using synthesize ammonia relief gas production synthesis ammonia, reduce periodic off-gases in valuable gases waste and improve synthetic ammonia feedstock
The advantages of utilization rate of gas.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, existing control brief description of the drawings
Specific embodiment of the present utility model, in the various figures identical label represent identical component.To make simplified form, in each figure
Only schematically show with the relevant part of utility model, they do not represent its practical structures as product.
As shown in Figure 1, the utility model utilizes the device for synthesizing ammonia relief gas production synthesis ammonia, including synthesis ammonia to be a kind of
Periodic off-gases pipeline, Ammonic washing tower 2, ammonia convertor 12, synthesis ammonia relief gas pipeline are connected with 2 import of Ammonic washing tower, the liquid phase of Ammonic washing tower 2
Outlet is connected with ammonia water tank 17, the gaseous phase outlet at the top of Ammonic washing tower 2 by mole sieve drier 3, First Heat Exchanger 4 tube side,
The tube side of 5 and second heat exchanger 6 of expanding machine is connected with the import of rectifying column 7, and the inner top of rectifying column 7 is equipped with condenser 16, essence
The liquid-phase outlet for evaporating 7 bottom of tower is connected with the import of condenser 16, and the outlet of condenser 16 passes through the first shell of the second heat exchanger 6
First shell side of journey and First Heat Exchanger 4 is connected with boiler furnace 9；The gas vent at the top of rectifying column 7 passes through the second heat exchange
Second shell side of device 6 and the second shell side of First Heat Exchanger 4 are connected with the import of compression section in centrifugal compressor 10, centrifugal
Compressor 10 includes the compression section of front end, and compression section is connected with the circulation section of end；The reaction gas outlet of ammonia convertor 12 passes through
Waste heat boiler 13, the shell side of the 3rd heat exchanger 11 and water cooler 14 are connected with the import of ammonia separator 15,15 bottom of ammonia separator
Liquid-phase outlet be connected with liquid ammonia storage tank 18, the gas vent at the top of ammonia separator 15 and circulation section in centrifugal compressor 10
Air inlet is connected, the circulation section gas outlet of centrifugal compressor 10 by the tube side of the 3rd heat exchanger 11 and ammonia convertor 12 into
Gas port is connected.The first valve 1 is installed on the synthesis ammonia relief gas pipeline.The liquid-phase outlet of 7 bottom of rectifying column with it is cold
Second valve 8 is installed between the import of condenser 16.
Periodic off-gases from production system neutralization of ammonia tank field in the utility model are by synthesizing ammonia relief gas pipeline and first
Valve 1 enters in Ammonic washing tower 2, and the first valve 1 can control the pressure and flow of periodic off-gases, and the main component of periodic off-gases is hydrogen
Gas, nitrogen, methane, argon gas, ammonia, 2.7~3.0MPa of pressure, 8~18 DEG C of temperature, is removed in Ammonic washing tower 2 with desalination water washing
Simultaneously ammonium hydroxide is made in ammonia in periodic off-gases, and ammonium hydroxide enters in ammonia water tank 17, and the gas after washing, which enters in mole sieve drier 3, to be removed
Moisture in gas, dried gas into First Heat Exchanger 4 tube side with by the second heat exchanger 6 come two bursts of cold logistics
Exchange heat, temperature is down to：- 129 DEG C~-126 DEG C, expanding machine 5 is entered after cooling, temperature further reduces, it is down to -135~-
132 DEG C, enter back into the tube side of the second heat exchanger 6, the cold medium come with the condenser 16 and tower top of rectifying column inner top carries out
Heat exchange, temperature is down to -177~-175 DEG C, and enters in rectifying column 7 and carry out rectifying.Kettle liquid main component first in rectifying column 7
Alkane, argon gas, kettle liquid through the decompression of the second valve 8 into 7 inner top of rectifying column condenser 16 as cooling medium, through the after heat exchange
After two heat exchangers, 6 shell side, the shell side of First Heat Exchanger 4 recycle cold, go in boiler furnace 9 to be used as raw material.The top of rectifying column 7
Gas vent in gas phase main component hydrogen, nitrogen, a part under the action of overhead condenser 16, as under phegma
Drop in tower, remainder comes out from tower top, enters after the shell side recycling cold of 6 shell side of the second heat exchanger, First Heat Exchanger 4
10 compression section of centrifugal compressor, carries to 13.5MPa in 10 compression section pressure-raising of centrifugal compressor, then with ammonia separator 15
Circulating air mixing, into the further pressure-raising of 10 circulation section of centrifugal compressor to 14.5MPa.Compressed gas after further pressure-raising
Body enters the gas converting heat temperature raising after the tube side neutralization reaction of the 3rd heat exchanger 11, anti-subsequently into being carried out in ammonia convertor 12
Should, the gas after being reacted in ammonia convertor 12 cools down through waste heat boiler 13, the shell side of the 3rd heat exchanger 11 and water cooler 14,
Gas after cooling, which enters in ammonia separator 15, carries out gas-liquid separation, and wherein liquid phase is product liquefied ammonia, and liquefied ammonia enters liquid ammonia storage tank
In 18；Gas phase returns to 10 circulation section entrance of centrifugal compressor, so circulation.
The a series of tool for describing the feasibility embodiment only for the utility model in detail of those listed above
Body illustrates that they are simultaneously not used to limitation the scope of protection of the utility model, all to be made without departing from the utility model skill spirit
Equivalent implementations or change should be included within the scope of protection of this utility model.In the description of the utility model, need
It is noted that unless otherwise clearly defined and limited, term " setting ", " installation " etc. should be interpreted broadly, for example, can
To be to be fixedly connected, it is integrally connected or is detachably connected；It can also be the connection inside two elements；Can be
It is connected directly, can also be indirectly connected by intermediary, for the ordinary skill in the art, can be according to specific
Situation understands concrete meaning of the above-mentioned term in the utility model.Foregoing detailed description is only for the utility model
Feasibility embodiment illustrates, they are simultaneously not used to limitation the scope of protection of the utility model, all without departing from this practicality
Equivalent implementations, change and the transformation that new skill spirit is made should be included within the scope of protection of this utility model.
Claims (3)
1. a kind of utilize the device for synthesizing ammonia relief gas production synthesis ammonia, including synthesis ammonia relief gas pipeline, Ammonic washing tower (2), ammonia
Synthetic tower (12), it is characterised in that：Synthesis ammonia relief gas pipeline is connected with Ammonic washing tower (2) import, the liquid-phase outlet of Ammonic washing tower (2)
It is connected with ammonia water tank (17), the gaseous phase outlet at the top of Ammonic washing tower (2) passes through mole sieve drier (3), the pipe of First Heat Exchanger (4)
The tube side of journey, expanding machine (5) and the second heat exchanger (6) is connected with the import of rectifying column (7), and the inner top of rectifying column (7) is equipped with
Condenser (16), the liquid-phase outlet of rectifying column (7) bottom are connected with the import of condenser (16), and the outlet of condenser (16) passes through
First shell side of the second heat exchanger (6) and the first shell side of First Heat Exchanger (4) are connected with boiler furnace (9)；Rectifying column (7)
The gas vent at top passes through the second shell side of the second heat exchanger (6) and the second shell side of First Heat Exchanger (4) and centrifugal pressure
The import of compression section is connected in contracting machine (10), and centrifugal compressor (10) includes the compression section of front end, and compression section and end are followed
Ring segment is connected；
The reaction gas outlet of ammonia convertor (12) passes through waste heat boiler (13), the shell side and water cooler (14) of the 3rd heat exchanger (11)
Import with ammonia separator (15) is connected, and the liquid-phase outlet of ammonia separator (15) bottom is connected with liquid ammonia storage tank (18), ammonia separation
Gas vent at the top of device (15) is connected with the air inlet of circulation section in centrifugal compressor (10), centrifugal compressor (10)
Circulation section gas outlet is connected by the tube side of the 3rd heat exchanger (11) with the air inlet of ammonia convertor (12).
2. a kind of utilize according to claim 1 synthesizes the device that ammonia relief gas production synthesizes ammonia, it is characterised in that：It is described
The first valve (1) is installed on synthesis ammonia relief gas pipeline.
3. a kind of utilize according to claim 1 synthesizes the device that ammonia relief gas production synthesizes ammonia, it is characterised in that：It is described
The second valve (8) is installed between the import of the liquid-phase outlet and condenser (16) of rectifying column (7) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085936.4U CN207259163U (en) | 2017-08-21 | 2017-08-21 | It is a kind of to utilize the device for synthesizing ammonia relief gas production synthesis ammonia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085936.4U CN207259163U (en) | 2017-08-21 | 2017-08-21 | It is a kind of to utilize the device for synthesizing ammonia relief gas production synthesis ammonia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207259163U true CN207259163U (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721085936.4U Active CN207259163U (en) | 2017-08-21 | 2017-08-21 | It is a kind of to utilize the device for synthesizing ammonia relief gas production synthesis ammonia |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207259163U (en) |
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2017
- 2017-08-21 CN CN201721085936.4U patent/CN207259163U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 453731 Xinxiang Economic Development Zone, Henan Province (Xiaoji Town) Patentee after: Henan Xinlianxin Chemical Industry Group Co., Ltd. Address before: 453731 Henan Xinxiang Economic Development Zone Xiaoji Town Henan Xinlianxin Chemical Fertilizer Co., Ltd. Patentee before: Henan XInlianxin Fertiliser Limited Company |