CN208008741U - A kind of system that water soluble method marsh gas purifying recycles whole carbon dioxide in the process - Google Patents
A kind of system that water soluble method marsh gas purifying recycles whole carbon dioxide in the process Download PDFInfo
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- CN208008741U CN208008741U CN201820261101.8U CN201820261101U CN208008741U CN 208008741 U CN208008741 U CN 208008741U CN 201820261101 U CN201820261101 U CN 201820261101U CN 208008741 U CN208008741 U CN 208008741U
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- biogas
- carbon dioxide
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- refrigeration machine
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Abstract
The utility model is related to the system of whole carbon dioxide, including absorption tower, carbon dioxide tower, heat exchanger, heater, high-pressure hydraulic pump, biogas compressor, biogas refrigeration machine, circulating liquid refrigeration machine, flash tank and hydraulic turbine are recycled during a kind of water soluble method marsh gas purifying；The utility model optimizes existing biogas high-pressure washing decarbonization process, while meeting marsh gas purifying, recycles carbon dioxide gas completely, avoids carbon dioxide gas being discharged into air, while improving the economic value added of production process.
Description
Technical field
The utility model is related to biomass marsh gas purification techniques fields, more particularly to one kind is in water soluble method marsh gas purifying process
In, by pressurizeing, WATER-WASHING METHOD detaches carbon dioxide from biogas, while natural gas purity in meeting biogas, by carbon dioxide
The system all recycled.
Background technology
The biogas produced in biomass gas engineering, main ingredient are natural gas and carbon dioxide, pass through removing
Marsh gas purifying may be implemented in carbon dioxide in biogas, improves combustion heat value, expanded application range.
Carbon dioxide in common high-pressure washing method removing biogas at present, produces natural gas.Domestic methane producing biology
Matter natural gas process is still at an early stage, lacks the reasonable recycling to carbon dioxide, uses the water to carbon dioxide
Solution carries out air purging, and great amount of carbon dioxide is directly discharged into air with air, not only caused by the energy waste, also result in
The increase of greenhouse gases.In today that control carbon emission is paid more and more attention, which needs to improve.
For existing market, the consumption of liquid CO 2 increases year by year, after especially deep processing becomes dry ice,
Economic value added is multiplied.And in the carbon dioxide recovery technique of existing marsh gas purifying process, simply by the reduction of pressure
Even negative-pressure operation recycles carbon dioxide, it is difficult to which the carbon dioxide in rich solution is complete, obtained lean solution is difficult to meet
The requirement of marsh gas purifying.
Invention content
The utility model provides a kind of system that water soluble method marsh gas purifying recycles whole carbon dioxide in the process, to existing
Biogas high-pressure washing decarbonization process optimizes, and while meeting marsh gas purifying, recycles carbon dioxide gas completely, avoid by
Carbon dioxide gas is discharged into air, while improving the economic value added of production process.
In order to achieve the above object, the utility model is realized using following technical scheme：
The system that whole carbon dioxide are recycled during water soluble method marsh gas purifying, including absorption tower, carbon dioxide tower,
Heat exchanger, heater, high-pressure hydraulic pump, biogas compressor, biogas refrigeration machine, circulating liquid refrigeration machine, flash tank and hydraulic turbine；
Gas outlet is set at the top of the absorption tower, top sets lean solution entrance, and lower part sets biogas entrance, and bottom sets rich solution outlet, inhales
The lean solution entrance for receiving tower is connected with the output end of high-pressure hydraulic pump, the biogas entrance on absorption tower and the output end phase of biogas compressor
Even, the input terminal of biogas compressor is connected with the output end of biogas refrigeration machine, the external biogas of input terminal connection of biogas refrigeration machine
Conveyance conduit；The rich solution outlet on absorption tower is connected with the rich solution entrance of hydraulic turbine, the rich solution outlet connection flash distillation of hydraulic turbine
The rich solution entrance on tank top；Flash drum overhead sets the biogas conveyance conduit of circulating air outlet connection biogas refrigeration machine upstream；Flash distillation
Pot bottom sets the rich solution entrance of rich solution outlet connection heat exchanger, and the rich solution entrance of the rich solution outlet connection heater of heat exchanger adds
The rich solution entrance on the rich solution outlet connection carbon dioxide tower top of hot device；Carbon dioxide top of tower sets carbon dioxide gas
Body outlet, bottom set the lean solution entrance of lean solution outlet connection heat exchanger, the lean solution outlet connection circulating liquid refrigeration of heat exchanger
The input terminal of machine, the lean solution entrance of the output end connection hydraulic turbine of circulating liquid refrigeration machine, the lean solution outlet of hydraulic turbine connects
Connect the input terminal of high-pressure hydraulic pump.
One to multiple layer filler is equipped in the absorption tower.
One to multiple layer filler is equipped in the carbon dioxide tower.
Compared with prior art, the utility model has the beneficial effects that：
1) carbon dioxide recovery in rich solution and enrichment can be made, after purifying, for producing liquid CO 2
Or dry ice, the pressure of enterprise's carbon emission is not only reduced, and improve the economic value added of production process, is conducive to promote life
Produce the competitive strength of enterprise；
2) the utility model is ensuring the same of marsh gas purifying effect using the process of pressurizing absorption and heating desorption
When, it realizes and the whole of carbon dioxide is recycled；
3) it is flashed in such a way that heating is depressured due to carbon dioxide, so desorber bottom is without being passed through air
Purging, eliminates the equipment such as wind turbine, reduces equipment investment and operating cost；
4) natural gas that common process produces needs further pressurized liquefied if you need to store transport；The utility model
Increase operating pressure in absorption tower, not only improves the absorption efficiency of carbon dioxide, also a save needed for subsequent compression gas
The energy；
5) the utility model is increasing absorption tower operating pressure, while reinforcing assimilation effect, by hydraulic turbine to inhaling
The energy for receiving bottom of tower rich solution is recycled, and to pressurize to lean solution, realizes recycling for energy.
Description of the drawings
Fig. 1 is that the structure for the system that water soluble method marsh gas purifying described in the utility model recycles whole carbon dioxide in the process is shown
It is intended to.
In figure：1. 7. high pressure of absorption tower 2. filler, 3. natural gas, 4. biogas, 5. biogas refrigeration machine, 6. biogas compressor
11. carbon dioxide gas of water pump 8. circulating liquid refrigeration machine, 9. carbon dioxide tower, 10. flash tank, 12. hydraulic turbine
13. 14. heat exchanger of heater
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, the system for recycling whole carbon dioxide during water soluble method marsh gas purifying described in the utility model, packet
Include absorption tower 1, carbon dioxide tower 9, heat exchanger 14, heater 13, high-pressure hydraulic pump 7, biogas compressor 6, biogas refrigeration machine
5, circulating liquid refrigeration machine 8, flash tank 10 and hydraulic turbine 12；The top on the absorption tower 1 sets gas outlet, and top sets poor
Liquid entrance, lower part set biogas entrance, and bottom sets rich solution outlet, the lean solution entrance on absorption tower 1 and the output end phase of high-pressure hydraulic pump 7
Even, the biogas entrance on absorption tower 1 is connected with the output end of biogas compressor 6, input terminal and the biogas refrigeration machine of biogas compressor 6
5 output end is connected, the external biogas conveyance conduit of input terminal connection of biogas refrigeration machine 5；The rich solution outlet and waterpower on absorption tower 1
The rich solution entrance of turbine 12 is connected, the rich solution entrance on 10 top of rich solution outlet connection flash tank of hydraulic turbine 12；Flash tank 10
Top sets the biogas conveyance conduit of 5 upstream of circulating air outlet connection biogas refrigeration machine；10 bottom of flash tank sets rich solution outlet connection
The rich solution entrance of heat exchanger 14, the rich solution entrance of the rich solution outlet connection heater 13 of heat exchanger 14, the rich solution of heater 13 go out
The rich solution entrance on 9 top of mouth connection carbon dioxide tower；9 top of carbon dioxide tower sets carbon dioxide gas outlet,
Bottom sets the lean solution entrance of lean solution outlet connection heat exchanger 14, the lean solution outlet connection circulating liquid refrigeration machine 8 of heat exchanger 14
Input terminal, the lean solution entrance of the output end connection hydraulic turbine 12 of circulating liquid refrigeration machine 8, the lean solution outlet of hydraulic turbine 12 connects
Connect the input terminal of high-pressure hydraulic pump 7.
One to multiple layer filler 2 is equipped in the absorption tower 1.
One to multiple layer filler 2 is equipped in the carbon dioxide tower 9.
The technical process of the system of whole carbon dioxide is recycled during water soluble method marsh gas purifying described in the utility model such as
Under：
1) biogas 4 conveyed by external biogas conveyance conduit enters successively after biogas refrigeration machine 5, biogas compressor 6
1 carbon dioxide removal of absorption tower, as 3 output of products of natural gas, 1 operating pressure of absorption tower is more than 1.6MPa；
2) enter flash tank 10 after absorption tower bottom rich solution is depressured by hydraulic turbine 12,10 top gas of flash tank includes one
Portion of natural gas 3 is back to the biogas conveyance conduit of 5 upstream of biogas refrigeration machine, the rich solution of 10 bottom of flash tank as circulating air
It is sent to heat exchanger 14；
3) in heat exchanger 14, lean solution is changed after the purification that the rich solution of 10 bottom of flash tank is exported with carbon dioxide tower 9
Heat enters heater 13, after continuing heating by heating medium for heating in heater 13, into carbon dioxide tower after rich solution heating
9；
4) in carbon dioxide tower 9, the carbon dioxide gas 11 separated from rich solution is discharged by tower top, dioxy
Lean solution enters the cooling of heat exchanger 14 after changing the purification of 9 bottom of tower of carbon desorber, then passes through the cooling of circulating liquid refrigeration machine 8, waterpower
After turbine 12 recycles dynamic supercharging, then absorption tower 1 is returned to by high-pressure hydraulic pump 7 and is recycled.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (3)
1. the system for recycling whole carbon dioxide during water soluble method marsh gas purifying, which is characterized in that including absorption tower, titanium dioxide
Carbon desorber, heat exchanger, heater, high-pressure hydraulic pump, biogas compressor, biogas refrigeration machine, circulating liquid refrigeration machine, flash tank and
Hydraulic turbine；Gas outlet is set at the top of the absorption tower, top sets lean solution entrance, and lower part sets biogas entrance, and bottom sets richness
Liquid exports, and the lean solution entrance on absorption tower is connected with the output end of high-pressure hydraulic pump, the biogas entrance on absorption tower and biogas compressor
Output end is connected, and the input terminal of biogas compressor is connected with the output end of biogas refrigeration machine, the input terminal connection of biogas refrigeration machine
External biogas conveyance conduit；The rich solution outlet on absorption tower is connected with the rich solution entrance of hydraulic turbine, the rich solution outlet of hydraulic turbine
Connect the rich solution entrance on flash tank top；Flash drum overhead sets the biogas delivery pipe of circulating air outlet connection biogas refrigeration machine upstream
Road；Flash tank bottom sets the rich solution entrance of rich solution outlet connection heat exchanger, the rich solution of the rich solution outlet connection heater of heat exchanger
Entrance, the rich solution entrance on the rich solution outlet connection carbon dioxide tower top of heater；Carbon dioxide top of tower sets two
Carbon oxide gas outlet, bottom set the lean solution entrance of lean solution outlet connection heat exchanger, the lean solution outlet connection cycle of heat exchanger
The input terminal of liquid refrigerating machine, circulating liquid refrigeration machine output end connection hydraulic turbine lean solution entrance, hydraulic turbine it is poor
The input terminal of liquid outlet connection high-pressure hydraulic pump.
2. the system for recycling whole carbon dioxide during water soluble method marsh gas purifying according to claim 1, feature exist
In equipped with one to multiple layer filler in the absorption tower.
3. the system for recycling whole carbon dioxide during water soluble method marsh gas purifying according to claim 1, feature exist
In equipped with one to multiple layer filler in the carbon dioxide tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820261101.8U CN208008741U (en) | 2018-02-22 | 2018-02-22 | A kind of system that water soluble method marsh gas purifying recycles whole carbon dioxide in the process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820261101.8U CN208008741U (en) | 2018-02-22 | 2018-02-22 | A kind of system that water soluble method marsh gas purifying recycles whole carbon dioxide in the process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208008741U true CN208008741U (en) | 2018-10-26 |
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ID=63885538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820261101.8U Active CN208008741U (en) | 2018-02-22 | 2018-02-22 | A kind of system that water soluble method marsh gas purifying recycles whole carbon dioxide in the process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208008741U (en) |
-
2018
- 2018-02-22 CN CN201820261101.8U patent/CN208008741U/en active Active
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