CN210656822U - Biomass gas cooling system - Google Patents
Biomass gas cooling system Download PDFInfo
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- CN210656822U CN210656822U CN201921257857.6U CN201921257857U CN210656822U CN 210656822 U CN210656822 U CN 210656822U CN 201921257857 U CN201921257857 U CN 201921257857U CN 210656822 U CN210656822 U CN 210656822U
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Abstract
The utility model belongs to the technical field of biomass gasification co-combustion power generation, concretely relates to biomass gas cooling system. The utility model provides a living beings gas cooling system, including gas heat transfer device and deaerating plant, still include, gas heat transfer pipeline set up in the gas heat transfer device, the deaerating plant establishes the deoxidization water tank in, the deaerating plant has second inlet and second liquid outlet, the second liquid outlet of deaerating plant through first pipeline with the first inlet of gas heat transfer pipeline is connected, the second inlet of deaerating plant through the second pipeline with the first liquid outlet of gas heat transfer pipeline is connected. The utility model provides a living beings gas cooling system has solved the complicated mode that adopts medium such as heat conduction oil to be the intermediate carrier at present, reaches the purpose that can high-efficient cooling can not lead to tar condensation jam again.
Description
Technical Field
The utility model belongs to the technical field of biomass gasification co-combustion power generation, concretely relates to biomass gas cooling system.
Background
The biomass power generation technology is an energy-saving and environment-friendly advanced power generation technology, and the biomass gasification mixed combustion power generation technology is used as one of the biomass power generation technologies and is increasingly widely applied. In the biomass gasification mixed combustion power generation technology, biomass is thermally decomposed in a gasification furnace to generate high-temperature biomass gas with the temperature of more than 650 ℃, if the high-temperature gas is directly conveyed to a coal-fired boiler for combustion, the specific volume of the high-temperature gas under the same pressure is larger, compared with low-temperature gas, a gas pipeline with a larger cross section is required for conveying, and meanwhile, the gas exceeding 650 ℃ is directly conveyed to the coal-fired boiler, so that the burning loss of the coal-fired boiler is easily caused. Therefore, the high-temperature fuel gas is generally cooled and then delivered to a coal-fired boiler for combustion. However, due to the fact that the biomass fuel gas contains a large amount of tar, the tar is easy to condense and deposit in the process of cooling the high-temperature fuel gas, and blocks a fuel gas conveying pipeline, so that heat exchange and cooling are ineffective.
In the prior art, high-temperature fuel gas is cooled by using heat-conducting oil firstly and then the heat-conducting oil is cooled by using condensate water, two sets of heat exchange systems are needed in the process, the system is complex, the maintenance and the control are difficult, and the heat loss is increased after multiple heat exchanges. On the other hand, because a heat conduction oil heat exchange system is used, in order to ensure that tar in fuel gas cannot be separated out, the temperature of heat conduction oil is required to be controlled to be more than 170 ℃, oil boiling is easily caused if the temperature is improperly controlled, the danger is high, the possibility of breakage exists in a fuel oil pipeline in the heat conduction oil heat exchange system, and once the pipeline is broken, oil pollution can be caused.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model is that current biomass gas cooling system is complicated, maintenance, control all are more difficult, and have the problem of boiling oil, oil leak risk to a biomass gas cooling system is proposed.
Therefore, the technical proposal adopted by the utility model is that,
a biomass gas cooling system, which comprises a gas heat exchange device and a gas cooling device,
a gas heat exchange pipeline which is arranged in the gas heat exchange device and is provided with a first liquid inlet and a first liquid outlet,
the deoxidization device establishes the deoxidization water tank in, the deoxidization device has second inlet and second liquid outlet, the second liquid outlet of deoxidization device through first pipeline with the first inlet of gas heat transfer pipeline is connected, the second inlet of deoxidization device through the second pipeline with the first liquid outlet of gas heat transfer pipeline is connected.
Further, still include supercharging device, set up in the gas heat transfer pipeline with between the deaerating plant, supercharging device has third liquid inlet and third liquid outlet, supercharging device's third liquid inlet through first pipeline with deaerating plant's second liquid outlet is connected, supercharging device's third liquid outlet through first pipeline with the first inlet of gas heat transfer pipeline is connected.
Furthermore, the gas heat exchange pipeline is provided with a first condensation pipe and a second condensation pipe, and the first condensation pipe and the second condensation pipe are arranged in the gas heat exchange device in a zigzag mode side by side.
Further, the minimum distance H between the pipeline center line of the first condensation pipe and the pipeline center line of the second condensation pipe is 70-90 mm;
the minimum distance h between the pipeline center lines of the first condensation pipe or the second condensation pipe is 160-240 mm.
Further, the first condensation pipe and/or the second condensation pipe are bare pipes.
And the biomass gas heat exchanger is communicated with the gas heat exchanger through the dust removal device, so that the biomass gas from the biomass gasification device is sent into the gas heat exchanger after being dedusted by the dust removal device.
Further, the dust removing device has an ash outlet to discharge ash from the dust removing device.
Furthermore, the oxygen removing device also comprises a steam turbine generator unit which is connected with the oxygen removing device.
Further, the deaerator is a deaerator, and the supercharging device is a supercharging water pump.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a living beings gas cooling system, through set up gas heat transfer pipeline in gas heat transfer device, gas heat transfer pipeline has first inlet and first liquid outlet, and the deoxidization water tank is established to the deaerating plant in, the deaerating plant has second inlet and second liquid outlet, the second liquid outlet of deaerating plant through first pipeline with the first inlet of gas heat transfer pipeline is connected, the second inlet of deaerating plant pass through the second pipeline with the first liquid outlet of gas heat transfer pipeline is connected.
Through the arrangement, water in the deaerating water tank is deaerated through the deaerating device to obtain deaerating water, the deaerating water enters the gas heat exchange pipeline in the gas heat exchange device through the first pipeline and directly cools high-temperature biomass gas, the temperature of the deaerating water is higher than 170 ℃, the temperature of the cold end of the gas heat exchanger is increased, condensation and deposition caused by low temperature of tar in the gas and blockage of the gas conveying pipeline are avoided, meanwhile, the deaerating water after heat exchange returns to the deaerating device again, heat carried by the deaerating water after heat exchange can be transferred to the turbo generator set, steam extraction at the high-temperature section of the steam turbine side is reduced, the efficiency of the unit is improved, meanwhile, the high-temperature biomass gas is cooled only through the deaerating water, a heat conducting oil system is omitted, the system structure is greatly simplified, and the problems that the system is complex and the system is caused by an inert system such as heat conducting oil in the, The maintenance and control are difficult, and the problems of the risk of boiling oil and oil leakage exist.
2. The utility model provides a living beings gas cooling system, it is further, still include supercharging device, set up in the gas heat transfer pipeline with between the deaerating plant, supercharging device has third liquid inlet and third liquid outlet, supercharging device's third liquid inlet through first pipeline with deaerating plant's second liquid outlet is connected, supercharging device's third liquid outlet through first pipeline with the first inlet of gas heat transfer pipeline is connected. The utility model discloses a supercharging device carries out the pressure boost to the deoxidization water of deoxidization water tank, ensures that the deoxidization hydroenergy after its pressure boost overcomes the system delay resistance, guarantees high temperature deoxidization water simultaneously and does not take place the vaporization.
3. The utility model provides a biomass gas cooling system, further, the minimum distance H of the pipeline central line of the first condenser pipe and the pipeline central line of the second condenser pipe is 70-90 mm; the minimum distance h between the pipeline center lines of the first condensation pipe or the second condensation pipe is 160-240 mm. The utility model discloses a mode of cold radiation cools off the gas, through the aforesaid setting, has increaseed the interval between the shape condenser pipe that returns, makes it reduce the contact of condenser pipe with the high temperature gas, simultaneously because contain the dust in the gas, the increase of interval between the condenser pipe has also reduced the possibility of returning the shape condenser pipe deposition.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a biomass gas cooling system of the present invention;
FIG. 2 is a schematic view of the biomass gas cooling system connected with a turbo generator set of the present invention;
FIG. 3 is a schematic structural view of the gas heat exchanger of the present invention;
FIG. 4 is an enlarged view of a partial structure of the gas heat exchange pipeline of the present invention;
wherein the reference numerals are represented as:
1. a biomass gasification unit; 2. a dust removal device; 3. a gas heat exchange device; 4. a gas heat exchange pipeline; 5. a deaerator; 6. a pressure boosting device; 7. a turbo generator unit; 8. a first pipeline; 9. a second pipeline; 10. a boiler feed pump; 11. a first condenser pipe; 12. a second condenser pipe; 13. a first liquid outlet; 14. a first liquid inlet.
Detailed Description
The technical solution of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the utility model provides a living beings gas cooling system, including gas heat transfer device 3, still include, gas heat transfer dress pipeline 4, set up in the gas heat transfer device 3, first inlet 14 and first liquid outlet 13 have, establish the deoxidization water tank in deoxidization device 5, deoxidization device 5 has second inlet and second liquid outlet, deoxidization device 5's second liquid outlet through first pipeline 8 with gas heat transfer dress pipeline 4's first inlet 14 is connected, deoxidization device 5's second inlet through second pipeline 9 with gas heat transfer dress pipeline 4's first liquid outlet 13 is connected.
Through the arrangement, water in the deaerating water tank is deaerated through the deaerating device 5 to obtain deaerating water, the deaerating water enters the gas heat exchange device pipeline 4 in the gas heat exchange device 3 through the first pipeline 8 to directly cool the high-temperature biomass gas coming out of the biomass gasification device 1, the temperature of the deaerating water is higher than 170 ℃, the temperature of the cold end (one end of the gas heat exchanger where the high-temperature gas enters the gas heat exchanger) is increased, condensation and deposition caused by low temperature of tar in the gas and blockage of a gas conveying pipeline are avoided, meanwhile, the deaerating water after heat exchange returns to the deaerating device 5 again, heat carried by the deaerating water after heat exchange can be transmitted to the turbo-generator unit 7, the steam extraction at the high-temperature section of the steam turbine side is reduced, the unit efficiency is improved, and meanwhile, a heat conduction oil system is omitted because only the deaerating water is adopted to cool the high-temperature, thereby the system structure has been simplified greatly, has effectively solved among the current biomass gas cooling system because inert system such as heat conduction oil leads to the system complicacy, maintenance control difficulty, and has the problem of boiling oil, oil leak risk.
The utility model discloses use above-mentioned living beings gas cooling system to cool down to high temperature living beings gas among the living beings gasification co-combustion power generation system, solved and adopted medium such as heat conduction oil at present to be the complex mode of intermediate carrier, reach the purpose that can high-efficient cooling can not lead to tar condensation to block up again, simultaneously the utility model discloses above-mentioned living beings gas cooling system is owing to saved the heat conduction oil system, has still improved the thermal value of utilizing after the heat transfer when having simplified system architecture greatly.
In an optional embodiment, the gas heat exchange device further comprises a pressure boosting device 6, which is arranged between the gas heat exchange device pipeline 4 and the oxygen removing device 5, wherein the pressure boosting device 6 is provided with a third liquid inlet and a third liquid outlet, the third liquid inlet of the pressure boosting device 6 is connected with the second liquid outlet of the oxygen removing device 5 through a first pipeline 8, and the third liquid outlet of the pressure boosting device 6 is connected with the first liquid inlet 14 of the gas heat exchange device pipeline 4 through the first pipeline 8. The utility model discloses a supercharging device carries out the pressure boost to the deoxidization water of deoxidization water tank, ensures that the deoxidization hydroenergy after its pressure boost overcomes the system delay resistance, guarantees high temperature deoxidization water simultaneously and does not take place the vaporization. Optionally, the pressure increasing device 6 is a water pump. The pressure boosting water pump boosts the deoxygenated water, and optionally, the pressure is 0.1-1.6 MPa.
In an alternative embodiment, as shown in fig. 3, the gas heat exchanger 4 has a first condensation pipe 11 and a second condensation pipe 12, and the first condensation pipe 11 and the second condensation pipe 12 are arranged in the gas heat exchanger 3 side by side in a zigzag shape. Optionally, as shown in fig. 4, the minimum distance H between the pipeline center line of the first condensation pipe 11 and the pipeline center line of the second condensation pipe 12 is 70-90 mm; the minimum distance h between the pipeline center lines of the first condensation pipe 11 or the second condensation pipe 12 is 160-240 mm. The utility model discloses a mode of cold radiation cools off the gas, through the aforesaid setting, has increaseed the interval between the shape condenser pipe that returns, makes it reduce the contact of condenser pipe with the high temperature gas, simultaneously because contain the dust in the gas, the increase of interval between the condenser pipe has also reduced the possibility of returning the shape condenser pipe deposition. Optionally, the first condensation pipe 11 and/or the second condensation pipe 12 are bare pipes. Optionally, the first condensation pipe 11 and the second condensation pipe 12 are both bare pipes, in the present invention, the bare pipes refer to condensation pipes whose outer surfaces are not coated with thermal insulation coatings. The utility model discloses an adopt the naked pipe setting with the condenser pipe, be favorable to increasing the gas and flow, do benefit to and cool down and control the gas.
In an optional embodiment, the biomass gasification device further comprises a biomass gasification device 1 and a dust removal device 2 which are sequentially communicated, wherein the dust removal device 2 is communicated with the gas heat exchange device 3, so that the biomass gas from the biomass gasification device 1 is sent into the gas heat exchange device 3 after being dedusted by the dust removal device 2.
In an optional embodiment, the biomass gasification device 1 is a gasification furnace, biomass such as straw is pyrolyzed in the gasification furnace to generate high-temperature fuel gas, the temperature of the high-temperature fuel gas is higher than 650 ℃, and the high-temperature fuel gas can directly enter the fuel gas heat exchange device 3 to cool the high-temperature fuel gas. Optionally, the gas heat exchange device 3 is a gas heat exchanger, the gas heat exchanger is a counter-flow heat exchanger, the temperature of the high-temperature gas passes through the gas heat exchanger, the temperature of the gas is reduced to 350-. Optionally, the deaerator 5 is a deaerator, a deaerating water tank is arranged in the deaerator, water in the deaerating water tank is deaerated through the deaerator to obtain deaerated water, the deaerated water is higher than 150 ℃, preferably, the deaerated water is higher than 170 ℃. Because water is big, stability is high than heat, the utility model discloses utilize the temperature to be greater than 150 ℃'s oxygen-removed water as high temperature gas cooling cold source, saved conduction oil heat transfer system, simplified the gas cooling system greatly, system operation is simple, and stability is high.
In an alternative embodiment, the dust extraction device 2 has an ash outlet for discharging ash from the dust extraction device 2. The utility model discloses a set up dust collector 2 between biomass gasification device 1 and gas heat transfer device 3, remove dust through dust collector 2 to the high temperature gas that comes out from biomass gasification device 1, reduced the influence of dust to the subsequent handling in the gas, especially effectively avoided the gas heat transfer of dust deposit in the gas heat transfer device 3 to adorn 4 surfaces of pipeline, influence heat transfer effect.
In an alternative embodiment, as shown in fig. 2, a turbo unit 7 is further included, which is connected to the oxygen removal device 5. The utility model discloses in carry out the oxygen-removed water of heat transfer through gas heat transfer device 3, the high temperature energy that it carried can transmit for turbo generator set 7, has effectively reduced the steam turbine side high temperature section and has taken out the vapour, has improved unit efficiency. Optionally, the oxygen removing device 5 may be used as a link in the biomass gasification mixed combustion power generation process, and participate in the biomass gasification mixed combustion power generation process, for example, the oxygen removing device 5 may also be connected to a boiler feed water pump 10, and perform subsequent processes in the power generation process.
The utility model discloses in, living beings, if straw etc. carry out thermal decomposition in the gasifier and produce high temperature gas, the temperature of high temperature gas is greater than 650 ℃, high temperature gas at first gets into dust collector 2 in order to remove dust to the biomass gas, and the lime-ash is discharged from dust collector 2's lime-ash export, and the biomass gas after the dust removal gets into gas heat exchanger and cools down, and gas temperature falls to 350 and adds 450 ℃, and the biomass gas after the cooling can get into the subsequent handling and utilize, for example, lets in the biomass gas after the cooling in the coal fired boiler and burns. In the deaerating plant 5, water in the deaerating water tank is deaerated through the deaerating plant 5 to obtain deaerated water, the deaerated water is higher than 150 ℃, preferably, the deaerated water is higher than 170 ℃. The deaerated water is pressurized to 0.1-1.6MPa through the pressurizing device 6, the deaerated water after pressurization enters the gas heat exchange device pipeline 4 through the first pipeline 8, high-temperature gas is cooled in the gas heat exchange device pipeline 4, simultaneously, deaerated water heat exchange is heated, the deaerated water after heat exchange is heated is returned to the deaerating device 5 through the second pipeline 9 again, heat carried by the deaerated water can be transferred to the turbo generator unit 7, and unit efficiency is improved.
The technical solution of the present invention is described below by the following embodiments:
example 1
This embodiment provides a living beings gas cooling system, as shown in fig. 1, including gas heat transfer device 3, still include, gas heat transfer piping 4, set up in the gas heat transfer device 3, have first inlet 14 and first liquid outlet 13, establish the deoxidization water tank in deoxidization device 5, deoxidization device 5 has second inlet and second liquid outlet, deoxidization device 5's second liquid outlet through first pipeline 8 with gas heat transfer piping 4's first inlet 14 is connected, deoxidization device 5's second inlet through second pipeline 9 with gas heat transfer piping 4's first liquid outlet 13 is connected.
Further, still include supercharging device 6, set up in gas heat transfer dress pipeline 4 with between the deaerating plant 5, supercharging device 6 has third liquid inlet and third liquid outlet, supercharging device 6's third liquid inlet through first pipeline 8 with deaerating plant 5's second liquid outlet is connected, supercharging device 6's third liquid outlet through first pipeline 8 with gas heat transfer dress pipeline 4's first inlet 14 is connected. Optionally, the pressure increasing device 6 is a water pump. The pressure boosting water pump boosts the deoxygenated water, and optionally, the pressure is 0.1-1.6 MPa.
Further, still including the biomass gasification device 1 and the dust collector 2 that communicate the setting in proper order, dust collector 2 with gas heat transfer device 3 intercommunication to make the biomass gas who comes from biomass gasification device 1 send into in gas heat transfer device 3 after dust removal by dust collector 2.
Specifically, the biomass gasification device 1 is a gasification furnace, biomass such as straw is subjected to thermal decomposition in the gasification furnace to generate high-temperature fuel gas, the temperature of the high-temperature fuel gas is higher than 650 ℃, and the high-temperature fuel gas can directly enter the fuel gas heat exchange device 3 so as to cool the high-temperature fuel gas. Optionally, the high-temperature fuel gas passes through the fuel gas heat exchanger, the temperature of the fuel gas is reduced to 350-. Optionally, the deaerator 5 is a deaerator, a deaerating water tank is arranged in the deaerator, water in the deaerating water tank is deaerated through the deaerator to obtain deaerated water, the deaerated water is higher than 150 ℃, preferably, the deaerated water is higher than 170 ℃. Optionally, the dust removal device 2 has an ash outlet to discharge ash from the dust removal device 2.
Example 2
On the basis of the above embodiment 1, as shown in fig. 3, the gas heat exchange pipeline 4 has a first condensation pipe 11 and a second condensation pipe 12, and the first condensation pipe 11 and the second condensation pipe 12 are arranged in the gas heat exchange device 3 in a parallel-zigzag manner. Optionally, as shown in fig. 4, the minimum distance H between the pipeline center line of the first condensation pipe 11 and the pipeline center line of the second condensation pipe 12 is 70-90 mm; the minimum distance h between the pipeline center lines of the first condensation pipe 11 or the second condensation pipe 12 is 160-240 mm. Optionally, the first condensation pipe 11 and/or the second condensation pipe 12 are bare pipes. Optionally, the first condensation pipe 11 and the second condensation pipe 12 are both bare pipes.
Example 3
This embodiment provides a biomass gas cooling system, on the basis of above embodiment 1 or 2, as shown in fig. 2, still include turbo generator set 7, with deaerating plant 5 is connected. The high-temperature energy carried by the deaerated water subjected to heat exchange through the gas heat exchange device 3 can be transferred to the turbo generator unit 7, so that the steam extraction at the high-temperature section of the steam turbine side can be effectively reduced, and the unit efficiency is improved. Optionally, the deaerator 5 may also be connected to a boiler feed pump 10.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A biomass fuel gas cooling system comprises a fuel gas heat exchange device and is characterized by also comprising a fuel gas heat exchange device,
a gas heat exchange pipeline which is arranged in the gas heat exchange device and is provided with a first liquid inlet and a first liquid outlet,
the deoxidization device establishes the deoxidization water tank in, the deoxidization device has second inlet and second liquid outlet, the second liquid outlet of deoxidization device through first pipeline with the first inlet of gas heat transfer pipeline is connected, the second inlet of deoxidization device through the second pipeline with the first liquid outlet of gas heat transfer pipeline is connected.
2. The biomass gas cooling system according to claim 1, further comprising a pressurizing device disposed between the gas heat exchange pipeline and the deaerating device, wherein the pressurizing device has a third liquid inlet and a third liquid outlet, the third liquid inlet of the pressurizing device is connected to the second liquid outlet of the deaerating device through a first pipeline, and the third liquid outlet of the pressurizing device is connected to the first liquid inlet of the gas heat exchange pipeline through a first pipeline.
3. The biomass gas cooling system according to claim 1 or 2, wherein the gas heat exchange pipeline has a first condensation pipe and a second condensation pipe, and the first condensation pipe and the second condensation pipe are arranged in the gas heat exchange device in a zigzag shape side by side.
4. The biomass gas cooling system according to claim 3, wherein the minimum distance H between the pipeline center line of the first condensation pipe and the pipeline center line of the second condensation pipe is 70-90 mm;
the minimum distance h between the pipeline center lines of the first condensation pipe or the second condensation pipe is 160-240 mm.
5. The biomass gas cooling system according to claim 4, wherein the first condenser pipe and/or the second condenser pipe are bare pipes.
6. The biomass gas cooling system according to claim 1 or 2, further comprising a biomass gasification device and a dust removal device which are sequentially communicated, wherein the dust removal device is communicated with the gas heat exchange device, so that the biomass gas from the biomass gasification device is sent into the gas heat exchange device after being dedusted by the dust removal device.
7. The biomass gas cooling system of claim 6, wherein the dust removal device has an ash outlet to discharge ash from the dust removal device.
8. The biomass gas cooling system according to claim 6, further comprising a turbo generator unit connected to the oxygen removal device.
9. The biomass gas cooling system according to claim 2, wherein the deaerator is a deaerator, and the pressure boosting device is a booster water pump.
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| CN201921257857.6U CN210656822U (en) | 2019-08-05 | 2019-08-05 | Biomass gas cooling system |
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| CN110484305A (en) * | 2019-08-05 | 2019-11-22 | 中国华电科工集团有限公司 | A kind of biological fuel gas cooling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110484305A (en) * | 2019-08-05 | 2019-11-22 | 中国华电科工集团有限公司 | A kind of biological fuel gas cooling system |
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