CN209226920U - Coal water slurry gasification exhaust treatment system - Google Patents
Coal water slurry gasification exhaust treatment system Download PDFInfo
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- CN209226920U CN209226920U CN201821991751.4U CN201821991751U CN209226920U CN 209226920 U CN209226920 U CN 209226920U CN 201821991751 U CN201821991751 U CN 201821991751U CN 209226920 U CN209226920 U CN 209226920U
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Abstract
The utility model discloses a kind of coal water slurry gasification exhaust treatment systems, it includes gasification furnace, reburner, middle temperature transformation reactor and carbon dioxide removal device, inlet valve is equipped on the second pipe of middle temperature transformation Reactor inlet side, outlet valve is equipped on the third pipeline of middle temperature transformation reactor outlet side, the second pipe of the air inlet side of inlet valve is connected to the third pipeline for going out gas side of outlet valve by bypass duct, and bypass valve is equipped on bypass duct.The utility model has the advantage of, when reburner drives to throw oxygen, open bypass valve, close inlet valve and outlet valve, the gas of reburner discharge can enter steam generator from bypass duct, it prevents from the catalyst of middle temperature transformation inside reactor from contacting oxygen to react, the high temperature centering temperature shift reaction device for avoiding oxygen reaction from generating causes to damage；In parking maintenance, inlet valve and outlet valve are closed, catalyst from air is prevented to be passivated, reduces catalyst input cost.
Description
Technical field:
The utility model relates to coal gasification fields, and in particular to a kind of coal water slurry gasification exhaust treatment system.
Background technique:
Water-coal-slurry hydrogen manufacturing refers to the advanced row gasification reaction of water-coal-slurry, then carries out decarburization to the tail gas that gasification reaction generates and obtain
The technical process of hydrogen, in the technique of water-coal-slurry hydrogen manufacturing, coal water slurry gasification generates methane, an oxidation first in gasification furnace
The gasification tail gas such as carbon, carbon dioxide, hydrogen, the tail gas that then gasifies pass sequentially through reburner, middle temperature transformation reactor, de- titanium dioxide
Carbon device, removing fall the impurity component in the tail gas that gasifies, only retain hydrogen.
Coal water slurry gasification exhaust treatment system has the following problems at work at present: 1, the gas of reburner discharge is direct
Into middle temperature transformation reactor, when reburner drives to throw oxygen, if loss of ignition, since middle temperature transformation reactor does not bypass
Pipeline just has a large amount of oxygen and enters middle temperature transformation reactor, and the catalyst of middle temperature transformation inside reactor is easy to oxygen
Oxidation reaction, the high temperature meeting centering temperature shift reaction device that oxidation reaction generates cause to damage；2, urging in middle temperature transformation reactor
Agent is disposable catalyst, must not be passivated reduction repeatedly, and the arrival end of the middle temperature transformation reactor of existing system does not have valve
Door, cannot achieve the isolation to middle temperature shift reaction device when to coal water slurry gasification exhaust treatment system parking maintenance, and medium temperature becomes
The catalyst changed in reactor inevitable ingress of air in coal water slurry gasification exhaust treatment system parking maintenance is passivated,
Lead to catalyst failure, the catalyst more renewed can improve the input cost of catalyst.
Utility model content:
The purpose of this utility model is to provide one kind can prevent oxygen or outside air in reburner from entering medium temperature
Shift-converter avoids the coal water slurry gasification exhaust treatment system of the catalyst failure in middle temperature transformation reactor.
The utility model is implemented by following technical solution: coal water slurry gasification exhaust treatment system comprising gasification furnace, conversion
Furnace, middle temperature transformation reactor and carbon dioxide removal device, pass through between the outlet of the gasification furnace and the entrance of the reburner
First pipe connection, is connected between the outlet of the reburner and the entrance of the middle temperature transformation reactor by second pipe,
It is connected between the outlet of the middle temperature transformation reactor and the entrance of the carbon dioxide removal device by third pipeline, described
Second pipe is equipped with inlet valve, and outlet valve, the institute of the air inlet side of the inlet valve are equipped on the third pipeline
It states second pipe to be connected to the third pipeline for going out gas side of the outlet valve by bypass duct, in the bypass duct
It is equipped with bypass valve.
Further, the inlet end of the bypass duct is to the second pipe between the inlet end of the inlet valve
It is equal by entrance to the second pipe between the entrance of the middle temperature transformation reactor with the outlet side of the inlet valve
Pressure pipe connection, is equipped with entrance equalizing valve on the entrance balance pipe, and the bore of the entrance equalizing valve is less than the inlet valve
The bore of door.
Further, the third between the inlet end for being exported to the outlet valve of the middle temperature transformation reactor
The outlet side of pipeline and the outlet valve is equal by outlet to the third pipeline between the outlet side of the bypass duct
Pressure pipe connection, is equipped with outlet equalizing valve on the outlet balance pipe, and the bore of the outlet equalizing valve is less than the outlet valve
The bore of door.
Further, described between the import of the outlet side of the bypass duct to the carbon dioxide removal device
Three pipelines be equipped with steam generator, the steam generator be equipped with high-temperature gas import, cryogenic gas outlet, water inlet and
Steam (vapor) outlet, the high-temperature gas import is connect with the third pipeline of the outlet side close to the bypass duct, described low
Warm gas vent is connect with the third pipeline of import close to the carbon dioxide removal device, the water inlet be connected with into
Water pipe, the steam (vapor) outlet are connected with vapour-discharge tube.
The advantages of the utility model: 1, when reburner drive throw oxygen, bypass valve is opened, closes inlet valve and outlet
Valve, if loss of ignition, a large amount of oxygen of reburner discharge can enter steam generator from bypass duct, prevent middle temperature transformation
Oxidation reaction occurs for the catalyst contact oxygen of inside reactor, the high temperature centering temperature shift reaction device for avoiding oxidation reaction from generating
It causes to damage；2, when to coal water slurry gasification exhaust treatment system parking maintenance, inlet valve and outlet valve are closed, to medium temperature
Shift-converter is isolated, and catalyst from air is prevented to be passivated, and avoids catalyst failure, reduce catalyst investment at
This；3, the bore of entrance equalizing valve is less than the bore of inlet valve, and the bore for exporting equalizing valve is less than the bore of outlet valve,
When valve two sides pressure difference is larger, small-bore valve opening is easier, when being switched to middle temperature transformation reactor from bypass duct
When, entrance equalizing valve and outlet equalizing valve can be first opened, pressure is carried out to the two sides of inlet valve and outlet valve respectively and is handled,
Prevent the pressure difference of inlet valve and outlet valve two sides excessive, it is difficult to directly open, guarantee the processing of coal water slurry gasification tail gas
Going on smoothly for process, improves work efficiency.
Detailed description of the invention:
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the system connection schematic diagram of the utility model.
Gasification furnace 1, middle temperature transformation reactor 2, carbon dioxide removal device 3, first pipe 4, second pipe 5, third pipeline
6, inlet valve 7, outlet valve 8, bypass duct 9, bypass valve 10, entrance balance pipe 11, entrance equalizing valve 12, outlet is pressed
Pipe 13 exports equalizing valve 14, and steam generator 15, high-temperature gas import 16, cryogenic gas outlet 17, water inlet 18, steam goes out
Mouth 19, water inlet pipe 20, vapour-discharge tube 21, reburner 22.
Specific embodiment:
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1:
As shown in Figure 1, coal water slurry gasification exhaust treatment system comprising sequentially connected gasification furnace 1, reburner 22, in
Temperature shift reaction device 2, steam generator 15 and carbon dioxide removal device 3, between the outlet of gasification furnace 1 and the entrance of reburner 22
It is connected by first pipe 4, is connected between the outlet of reburner 22 and the entrance of middle temperature transformation reactor 2 by second pipe 5,
It is connected between the outlet of middle temperature transformation reactor 2 and the entrance of carbon dioxide removal device 3 by third pipeline 6, in second pipe 5
It is equipped with inlet valve 7, outlet valve 8, the second pipe 5 of the air inlet side of inlet valve 7 and outlet are equipped on third pipeline 6
The third pipeline 6 for going out gas side of valve 8 is connected to by bypass duct 9, and bypass valve 10 is equipped on bypass duct 9.
Steam is equipped on third pipeline 6 between the import of the outlet side of bypass duct 9 to carbon dioxide removal device 3 to send out
Raw device 15, steam generator 15 are equipped with high-temperature gas import 16, cryogenic gas outlet 17, water inlet 18 and steam (vapor) outlet 19,
High-temperature gas import 16 is connect with the third pipeline 6 of the outlet side close to bypass duct 9, cryogenic gas outlet 17 and close de- two
The third pipeline 6 of the import of carbonoxide device 3 connects, and water inlet 18 is connected with water inlet pipe 20, and steam (vapor) outlet 19 is connected with steam
Discharge pipe 21.
The inlet end of bypass duct 9 between the inlet end of inlet valve 7 second pipe 5 and inlet valve 7 outlet
End is connected to the second pipe 5 between the entrance of middle temperature transformation reactor 2 by entrance balance pipe 11, on entrance balance pipe 11
Equipped with entrance equalizing valve 12, the bore of entrance equalizing valve 12 is less than the bore of inlet valve 7.
Third pipeline 6 and outlet valve 8 between the inlet end for being exported to outlet valve 8 of middle temperature transformation reactor 2
Outlet side is connected to the third pipeline 6 between the outlet side of bypass duct 9 by outlet balance pipe 13, on outlet balance pipe 13
Equipped with outlet equalizing valve 14, the bore of outlet equalizing valve 14 is less than the bore of outlet valve 8.
Working principle:
Water-coal-slurry carries out gasification reaction in gasification furnace 1 and generates the gasification tail such as methane, carbon monoxide, carbon dioxide, hydrogen
Gas, gasification tail gas are converted by first pipe 4 into reburner 22, are carried out throwing oxygen burning first to reburner 22, are given gas
The methane and steam reaction changed in tail gas provide high temperature, to close inlet valve 7 and outlet valve 8 at this time, open bypass valve
Door 10, loss of ignition when preventing from throwing oxygen, oxygen enters middle temperature transformation reactor 2 and oxidation reaction occurs for catalyst, avoids aoxidizing
React the high-temperature damage middle temperature transformation reactor 2 generated；After the gas that reburner 22 is discharged at this time can be entered by bypass duct 9
The equipment such as continuous steam generator 15, carbon dioxide removal device 3.
After reburner 22 is lighted a fire successfully, entrance equalizing valve 12 and outlet equalizing valve 14, the mouth of entrance equalizing valve 12 are opened
Diameter be less than inlet valve 7 bore, outlet equalizing valve 14 bore be less than outlet valve 8 bore, valve two sides pressure difference compared with
When big, small-bore valve opening is easier, and after entrance equalizing valve 12 and the outlet unlatching of equalizing valve 14, it is equal to balance entrance respectively
Reburner 22 is discharged convenient for opening inlet valve 7 and outlet valve 8 in the air pressure of pressure valve 12 and outlet 14 two sides of equalizing valve
Gas can smoothly enter into middle temperature transformation reactor 2, guarantee going on smoothly for the treatment process of coal water slurry gasification tail gas, improve
Working efficiency；Tail gas gasify after reburner 22 removes methane, removes carbon monoxide into middle temperature transformation reactor 2, so
Enter steam generator 15 afterwards, the heat in gasification tail gas is recycled, from steam generator after gasification tail gas cooling
15 17 discharge of cryogenic gas outlet, the removing of carbon dioxide is carried out into carbon dioxide removal device 3, so that in gasification tail gas
Foreign gas removing, the content and purity of hydrogen increase.
When coal water slurry gasification exhaust treatment system is overhauled in parking, inlet valve 7 and outlet valve 8 are closed,
Middle temperature transformation reactor 2 is isolated, catalyst from air is prevented to be passivated, avoids catalyst failure, reduces catalyst investment
Cost.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. coal water slurry gasification exhaust treatment system comprising gasification furnace, reburner, middle temperature transformation reactor and carbon dioxide removal dress
Set, between the outlet of the gasification furnace and the entrance of the reburner by first pipe connect, the outlet of the reburner with
It is connected between the entrance of the middle temperature transformation reactor by second pipe, the outlet of the middle temperature transformation reactor takes off with described
It is connected between the entrance of carbon dioxide plant by third pipeline, which is characterized in that inlet valve is equipped on the second pipe
Door is equipped with outlet valve, the second pipe of the air inlet side of the inlet valve and the outlet on the third pipeline
The third pipeline for going out gas side of valve is connected to by bypass duct, and bypass valve is equipped on the bypass duct.
2. coal water slurry gasification exhaust treatment system according to claim 1, which is characterized in that the air inlet of the bypass duct
Outlet side to the medium temperature to the second pipe and the inlet valve between the inlet end of the inlet valve is held to become
The second pipe changed between the entrance of reactor is connected to by entrance balance pipe, and entrance is equipped on the entrance balance pipe
Equalizing valve, the bore of the entrance equalizing valve are less than the bore of the inlet valve.
3. coal water slurry gasification exhaust treatment system according to claim 1 or 2, which is characterized in that the middle temperature transformation is anti-
Answer outlet side to the institute of the third pipeline and the outlet valve between the inlet end for being exported to the outlet valve of device
The third pipeline between the outlet side of bypass duct is stated by outlet balance pipe connection, is equipped on the outlet balance pipe
Equalizing valve is exported, the bore of the outlet equalizing valve is less than the bore of the outlet valve.
4. coal water slurry gasification exhaust treatment system according to claim 1 or 2, which is characterized in that in the bypass duct
Outlet side to the third pipeline between the import of the carbon dioxide removal device be equipped with steam generator, the steam
Generator is equipped with high-temperature gas import, cryogenic gas outlet, water inlet and steam (vapor) outlet, the high-temperature gas import with it is close
The third pipeline of the outlet side of the bypass duct connects, and the cryogenic gas outlet is filled with close to the carbon dioxide removal
The third pipeline for the import set connects, and the water inlet is connected with water inlet pipe, and the steam (vapor) outlet is connected with steam discharge
Pipe.
5. coal water slurry gasification exhaust treatment system according to claim 3, which is characterized in that in going out for the bypass duct
Gas end to the third pipeline between the import of the carbon dioxide removal device is equipped with steam generator, the steam generation
Device is equipped with high-temperature gas import, cryogenic gas outlet, water inlet and steam (vapor) outlet, the high-temperature gas import and close to described
The third pipeline of the outlet side of bypass duct connects, the cryogenic gas outlet and the close carbon dioxide removal device
The third pipeline of import connects, and the water inlet is connected with water inlet pipe, and the steam (vapor) outlet is connected with vapour-discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821991751.4U CN209226920U (en) | 2018-11-29 | 2018-11-29 | Coal water slurry gasification exhaust treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821991751.4U CN209226920U (en) | 2018-11-29 | 2018-11-29 | Coal water slurry gasification exhaust treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209226920U true CN209226920U (en) | 2019-08-09 |
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ID=67505360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821991751.4U Active CN209226920U (en) | 2018-11-29 | 2018-11-29 | Coal water slurry gasification exhaust treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209226920U (en) |
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2018
- 2018-11-29 CN CN201821991751.4U patent/CN209226920U/en active Active
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