CN209537410U - Energy-saving safety synthesizes ammonia natural gas high temperature desulfurizing system - Google Patents
Energy-saving safety synthesizes ammonia natural gas high temperature desulfurizing system Download PDFInfo
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- CN209537410U CN209537410U CN201920162252.2U CN201920162252U CN209537410U CN 209537410 U CN209537410 U CN 209537410U CN 201920162252 U CN201920162252 U CN 201920162252U CN 209537410 U CN209537410 U CN 209537410U
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Abstract
The utility model discloses a kind of energy-saving safeties to synthesize ammonia natural gas high temperature desulfurizing system, ferrimanganic desulfurizer A, the unstripped gas outlet line of ferrimanganic desulfurizer B is divided into three branch pipes, one of branch pipe is connected with recovery line, recovery line is connected with the inlet line of fuel gas separating device, second branch pipe is connected with the top feed gas inlet pipe line of zinc oxide desulfurization slot, the outlet at bottom pipeline of zinc oxide desulfurization slot separates four branch pipes, natural gas in one of branch pipe from the import of the technique heat exchange gas pipeline in gas heating furnace enters heating after mixing with middle pressure steam；Conversion procedure is removed after heated；Second branch pipe is as blow-down pipe, third branch pipe and recovery line；4th branch pipe is connected with the hot side import of cooler, and the cold side outlet port of cooler is as sample tap；Displacement nitrogen pipeline and desalted water pipeline are also respectively connected on raw material gas inlet pipeline at the top of ferrimanganic desulfurizer A, ferrimanganic desulfurizer B.Energy-saving and emission-reduction reduce safety accident.
Description
Technical field
The utility model relates to a kind of natural gas high temperature desulfurizing system, in particular to a kind of energy conservation synthesis ammonia natural gas high temperature
Desulphurization system.
Background technique
High temperature desulfurizing process is provided with ferrimanganic desulfurizer A, ferrimanganic desulfurizer B and zinc oxide desulfurization slot, ferrimanganic desulfurizer A/B
In desulfurizing agent be Fe3O4And MnO, the desulfurizing agent in zinc oxide desulfurization slot are ZnO.Organic sulfur in natural gas is in ferrimanganic desulfurization
Inorganic sulfur H is converted in slot A/B2S, then most of inorganic sulfur H2S and Fe3O4It is removed with MnO reaction, remaining inorganic sulfur
H2S enters zinc oxide desulfurization slot, and the reaction was continued with ZnO, the organic sulfur and inorganic sulfur from the natural gas that oxidisability desulfurizer comes out
It is all removed totally, so that it is guaranteed that the catalyst in follow-up producing process is no longer by the sulfur poisoning in natural gas.
Process flow are as follows: the top that the raw natural gas from compression about 3.9MPa or so enters gas heating furnace carries out
Heat exchange, raw natural gas are heated to sequentially entering ferrimanganic desulfurizer A or B after 340 DEG C or so from 40 DEG C or so, having in natural gas
Machine sulphur is completely converted into inorganic sulfur in ferrimanganic desulfurizer, while most of inorganic sulfur is deviate from ferrimanganic desulfurizer, from
Also contain a small amount of inorganic sulfur in the raw natural gas that ferrimanganic desulfurizer comes out, when raw natural gas enters zinc oxide desulfurization slot
Afterwards, the inorganic sulfur in raw natural gas is all deviate from, and the organic sulfur in raw natural gas and inorganic sulfur are all zero at this time, this is just
It ensure that the catalyst of subsequent handling will not contact and poison deactivation with sulphur.The raw natural gas come out from zinc oxide desulfurization slot is about
320 DEG C or so, the lower part that gas heating furnace is entered after then mixing with the middle pressure steam that pipeline is come exchanges heat, and mixes
Gas is finally heated to 400 DEG C or so and goes conversion procedure to continue the conversion reaction after coming out in heating furnace.
It is respectively arranged with a nitrogen pipeline in ferrimanganic desulfurizer A/B import, this pipeline is as high temperature desulfurizing initial start-up
It is used when heating.It is respectively arranged with an exhausting pipeline in the outlet ferrimanganic desulfurizer A/B, when ferrimanganic desulfurizer initial start-up heats up
Or when needing replacing the desulfurizing agent to fail in ferrimanganic desulfurizer, this pipeline can use to carry out pressure release to ferrimanganic desulfurizer.
Fuel natural gas from room temperature desulfurization process initially enters fuel gas separating device, the moisture in fuel natural gas and
Impurity is separated off by separator, and then natural gas is pipelined to the bottom of gas heating furnace as fuel pair
It carries out combustion heating.
There are the problem of
1, by prolonged production run, after the desulfurizing agent in ferrimanganic desulfurizer fails, it would be desirable to failure
Desulfurizing agent is replaced.Iron-manganese desulfurizer is with Fe when producing and using3O4Exist with the reduction-state form of MnO, when failure
When desulfurizing agent is drawn off from ferrimanganic desulfurizer, still there are also least a portion of Fe in desulfurizing agent3O4Exist with MnO, once Fe3O4With
O in MnO and air2Oxidation reaction can be sharply carried out after contact, the temperature rising of desulfurizing agent is very fast, sometime up to several hundred
Degree, this will bring great security risk, easily burn employee to the employee of handling desulfurizing agent.
2, the desulfurizing agent failure when carrying out original heating reduction to the desulfurizing agent in ferrimanganic desulfurizer, in ferrimanganic desulfurizer
After when needing replacing desulfurizing agent, these when require to open the blow valve of ferrimanganic desulfurizer outlet conduit in ferrimanganic desulfurizer
Raw natural gas carry out blowdown pressure letdown.
When carrying out original heating reduction to the desulfurizing agent in zinc oxide desulfurization slot, when being driven again after parking, this
The blow valve for being also required to open the outlet of zinc oxide desulfurization slot when a little carries out blowdown pressure letdown to the raw natural gas in slot.This part
Natural gas straight connected exhausting pipeline and enters atmosphere, not only causes the waste to natural gas, also will cause environmental pollution.
Utility model content
In view of the above technical problems, the purpose of this utility model is to provide a kind of energy-saving safeties to synthesize ammonia natural gas high temperature
Desulphurization system reduces safety accident incidence, avoids environmental pollution, energy saving.
To achieve the goals above, a kind of the technical solution of the utility model are as follows: energy-saving safety synthesis ammonia natural gas high temperature
Desulphurization system, including gas heating furnace, ferrimanganic desulfurizer A, ferrimanganic desulfurizer B, zinc oxide desulfurization slot, the heated by natural gas
Top in furnace is provided with unstripped gas heat exchange pipeline, and the lower part in the gas heating furnace is provided with technique heat exchange gas pipe
Road, bottom are provided with fuel gas inlet pipeline, and the fuel gas inlet pipeline is connected with the outlet line of fuel gas separating device；Come
Enter from the raw natural gas of compressor from the import of unstripped gas heat exchange pipeline, after heated, from raw natural gas heat exchange pipeline
Outlet comes out, the raw natural gas heat exchange pipeline outlet respectively with the raw material at the top of ferrimanganic desulfurizer A, ferrimanganic desulfurizer B
Gas inlet pipe line be connected, the ferrimanganic desulfurizer A, ferrimanganic desulfurizer B bottom be provided with unstripped gas outlet line, feature exists
Be divided into three branch pipes in the unstripped gas outlet line of: the ferrimanganic desulfurizer A, ferrimanganic desulfurizer B, one of branch pipe with return
Closed tube line is connected, and the recovery line is connected with the inlet line of fuel gas separating device, second branch pipe and zinc oxide desulfurization slot
Top feed gas inlet pipe line be connected, the third branch pipe of the unstripped gas outlet line of the ferrimanganic desulfurizer A and ferrimanganic take off
The top feed gas inlet pipe line of sulphur slot B is connected, the third branch pipe and iron of the unstripped gas outlet line of the ferrimanganic desulfurizer B
The top feed gas inlet pipe line of manganese desulfurizer A is connected；The outlet at bottom pipeline of the zinc oxide desulfurization slot separates four branch pipes,
Natural gas in one of branch pipe mixed with middle pressure steam after from the technique heat exchange gas pipeline in gas heating furnace
Import enters heating；Conversion procedure is removed after heated；Second branch pipe is as blow-down pipe, third branch pipe and recovery line phase
Even；4th branch pipe is connected with the hot side import of cooler, and the cold side outlet port of the cooler is as sample tap；The ferrimanganic is de-
Displacement nitrogen pipeline and desalted water pipeline are also respectively connected on raw material gas inlet pipeline at the top of sulphur slot A, ferrimanganic desulfurizer B.
In above scheme: the import of the unstripped gas heat exchange pipeline in the gas heating furnace is located at gas heating furnace
Top, outlet are located at middle part；The import of the technique heat exchange gas pipeline is located at bottom, and outlet is located at middle and lower part.
In above scheme: the cooler is cooled down using recirculated water.
The utility model has the advantages that after the desulfurizing agent in ferrimanganic desulfurizer fails, it would be desirable to be replaced to the desulfurizing agent of failure.
Pressure release is carried out using nitrogen first, cooling of pouring water then is carried out by desulfurizing agent of the desalted water pipeline first into ferrimanganic desulfurizer,
The desulfurizing agent that ferrimanganic desulfurizer draws off failure is opened again, is solved high temperature after desulfurization agent air carries out vigorous oxidation and is easily hurt
The problem of people.
Zinc oxide desulfurization slot and dropping a hint for ferrimanganic desulfurizer A and B are connected to fuel gas separating device by recovery channel
Inlet line mixed with the fuel gas from room temperature desulfurization after, the fuel gas as gas heating furnace burns,
Not only the raw natural gas of emptying is recycled in this way, has saved energy consumption, natural gas is also solved and is directly vented dirt
The problem of contaminating environment.
In the sampling of zinc oxide desulfurization slot outlet line, natural gas is cooled down first with recirculated water, avoids high temperature day
Right gas accidentally injures sampling people.
Detailed description of the invention
Fig. 1 is the process flow chart of the utility model.
Specific embodiment
By way of example and in conjunction with the accompanying drawings, the utility model is described in further detail:
Embodiment 1, as shown in Figure 1, energy-saving safety synthesizes ammonia natural gas high temperature desulfurizing system by gas heating furnace 1, iron
Manganese desulfurizer A2, ferrimanganic desulfurizer B3, zinc oxide desulfurization slot 4, fuel gas separating device 5, displacement nitrogen pipeline 6, desalted water pipeline
7, recovery line 8 and cooler 9 and connecting pipeline and valve.
Top in gas heating furnace 1 is provided with unstripped gas heat exchange pipeline, and the lower part in gas heating furnace 1 is provided with
Technique heat exchange gas pipeline, bottom are provided with fuel gas inlet pipeline, wherein the unstripped gas heat exchanger tube in gas heating furnace 1
The import in road is located at the top of gas heating furnace 1, and outlet is located at middle part；The import of technique heat exchange gas pipeline is located at bottom
Portion, outlet are located at middle and lower part.
Fuel gas inlet pipeline is connected with the outlet line of fuel gas separating device 5.Raw natural gas from compressor from
The import of unstripped gas heat exchange pipeline enters, and after heated, exports out from raw natural gas heat exchange pipeline, raw natural gas heat exchange
The outlet of pipeline is connected with the raw material gas inlet pipeline at the top of ferrimanganic desulfurizer A2, ferrimanganic desulfurizer B3 respectively, ferrimanganic desulfurizer
A2, ferrimanganic desulfurizer B3 bottom be provided with unstripped gas outlet line, ferrimanganic desulfurizer A2, ferrimanganic desulfurizer B3 unstripped gas go out
Mouthful pipeline is divided into three branch pipes, and one of branch pipe is connected with recovery line 8, recovery line 8 and fuel gas separating device 5 into
Mouthful pipeline is connected, the natural gas recycled in recovery line 8 with from room temperature desulphurization system fuel gas mix after divide into fuel gas
From device 5, moisture and impurity therein are isolated.The top feed gas inlet pipe line phase of second branch pipe and zinc oxide desulfurization slot 4
Even, the top feed gas inlet pipe line of the third branch pipe of the unstripped gas outlet line of ferrimanganic desulfurizer A2 and ferrimanganic desulfurizer B3
It is connected, the third branch pipe of the unstripped gas outlet line of ferrimanganic desulfurizer B3 and the top feed gas inlet pipe of ferrimanganic desulfurizer A2
Line is connected.Displacement nitrogen tube is also respectively connected on raw material gas inlet pipeline at the top of ferrimanganic desulfurizer A2, ferrimanganic desulfurizer B3
Line 6 and desalted water pipeline 7.
The outlet at bottom pipeline of zinc oxide desulfurization slot 4 separates four branch pipes, the natural gas in one of branch pipe and middle pressure
Enter heating from the import of the technique heat exchange gas pipeline in gas heating furnace 1 after steam mixing；It goes to convert after heated
Process.Second branch pipe is connected as blow-down pipe, third branch pipe with recovery line 8.The heat of 4th branch pipe and cooler 9
Side-entrance is connected, and as sample tap, cooler 9 is cooled down the cold side outlet port of cooler 9 using recirculated water.
The utility model is not limited to the above embodiment, it will be understood by those skilled in the art that: do not departing from this
A variety of change, modification, replacement and modification, this reality can be carried out to these embodiments in the case where the principle and objective of utility model
It is defined by the claims and their equivalents with novel range.
Claims (3)
1. a kind of energy-saving safety synthesizes ammonia natural gas high temperature desulfurizing system, including gas heating furnace, ferrimanganic desulfurizer A, ferrimanganic
Desulfurizer B, zinc oxide desulfurization slot, the top in the gas heating furnace are provided with unstripped gas heat exchange pipeline, the natural gas
Lower part in heating furnace is provided with technique heat exchange gas pipeline, and bottom is provided with fuel gas inlet pipeline, the fuel gas into
Mouth pipeline is connected with the outlet line of fuel gas separating device；Raw natural gas from compressor from unstripped gas heat exchange pipeline into
Mouth enters, and after heated, exports out from raw natural gas heat exchange pipeline, the outlet difference of the raw natural gas heat exchange pipeline
It is connected with the raw material gas inlet pipeline at the top of ferrimanganic desulfurizer A, ferrimanganic desulfurizer B, the ferrimanganic desulfurizer A, ferrimanganic desulfurizer B
Bottom be provided with unstripped gas outlet line, it is characterised in that: the ferrimanganic desulfurizer A, ferrimanganic desulfurizer B unstripped gas outlet
Pipeline is divided into three branch pipes, and one of branch pipe is connected with recovery line, the recovery line and fuel gas separating device into
Mouth pipeline is connected, and second branch pipe is connected with the top feed gas inlet pipe line of zinc oxide desulfurization slot, the ferrimanganic desulfurizer A's
The third branch pipe of unstripped gas outlet line is connected with the top feed gas inlet pipe line of ferrimanganic desulfurizer B, the ferrimanganic desulfurization
The third branch pipe of the unstripped gas outlet line of slot B is connected with the top feed gas inlet pipe line of ferrimanganic desulfurizer A；The oxidation
The outlet at bottom pipeline of zinc desulfurizer separates four branch pipes, the natural gas in one of branch pipe mixed with middle pressure steam after from day
The import of technique heat exchange gas pipeline in right gas heating furnace enters heating；Conversion procedure is removed after heated；Second branch pipe
As blow-down pipe, third branch pipe is connected with recovery line；4th branch pipe is connected with the hot side import of cooler, described cold
But the cold side outlet port of device is as sample tap；On raw material gas inlet pipeline at the top of the ferrimanganic desulfurizer A, ferrimanganic desulfurizer B also
It is connected separately with displacement nitrogen pipeline and desalted water pipeline.
2. energy-saving safety synthesizes ammonia natural gas high temperature desulfurizing system according to claim 1, it is characterised in that: the natural gas
The import of unstripped gas heat exchange pipeline in heating furnace is located at the top of gas heating furnace, and outlet is located at middle part；The technique day
The import of right gas heat exchange pipeline is located at bottom, and outlet is located at middle and lower part.
3. energy-saving safety according to claim 1 or claim 2 synthesizes ammonia natural gas high temperature desulfurizing system, it is characterised in that: described cold
But device is cooled down using recirculated water.
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| CN201920162252.2U CN209537410U (en) | 2019-01-30 | 2019-01-30 | Energy-saving safety synthesizes ammonia natural gas high temperature desulfurizing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282071A (en) * | 2023-02-28 | 2023-06-23 | 新疆玉象胡杨化工有限公司 | Comprehensive recovery process for purge gas and special device thereof |
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2019
- 2019-01-30 CN CN201920162252.2U patent/CN209537410U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282071A (en) * | 2023-02-28 | 2023-06-23 | 新疆玉象胡杨化工有限公司 | Comprehensive recovery process for purge gas and special device thereof |
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