CN217149105U - Biogas purification system - Google Patents
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- CN217149105U CN217149105U CN202220863540.2U CN202220863540U CN217149105U CN 217149105 U CN217149105 U CN 217149105U CN 202220863540 U CN202220863540 U CN 202220863540U CN 217149105 U CN217149105 U CN 217149105U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model belongs to marsh gas processing field specifically discloses a marsh gas purification system, include biogas pipeline, purification system and be used for control purify the automatic control system of purification system, purification system is including the double-deck biological desulfurization system of packing, one-level dewatering system, the dry process desulfurization system of multilayer packing, second grade dewatering system, pressure swing adsorption system, exhaust-gas treatment system and the automatic control system that connects gradually, the automatic control system is including the detection transmission unit, analytical element and the execution unit that connect gradually, detect the transmission unit with the execution unit all connect in purification system forms the closed loop. The automatic degree is high, and control is accurate, only needs a small amount of manual work to overhaul and maintain regularly, improves work production efficiency, reduces people's working strength. Harmful gas is effectively removed from the generated waste gas through a waste gas treatment tower, so that the environmental pollution is reduced; the dry desulfurization system and the pressure swing adsorption system can be regenerated, so that resources are saved.
Description
Technical Field
The utility model belongs to marsh gas processing field, specifically speaking relates to a marsh gas purification system.
Background
Along with the development of urbanization in China and the increasing improvement of the living standard of people, organic solid wastes such as urban domestic garbage, kitchen garbage, livestock and poultry manure and the like are continuously increased, the quantity of the substances subjected to anaerobic treatment is continuously increased, under the anaerobic condition, microorganisms decompose organic matters to generate a large amount of methane, the components of the methane are mainly methane, the content of the methane reaches 50% -80%, the methane is purified, clean fuel mainly containing methane can be obtained, and the methane can be used for civil centralized gas supply or methane power generation to generate great economic value. The methane generated by anaerobic fermentation is efficiently utilized, and the dependence of China on coal and petroleum energy can be reduced.
While methane is produced by anaerobic fermentation, a part of hydrogen sulfide, moisture, CO2, VOC, ammonia gas and the like are also produced. The calorific value of carbon dioxide and water, hinders the combustion of methane. Hydrogen sulfide is a highly corrosive gas, which can cause rapid corrosion of pipelines and instruments, and sulfur dioxide, disulfur trioxide and disulfur tetroxide generated during combustion of hydrogen sulfide itself have toxic effects on human bodies.
The prior biogas purification technologies comprise a dry desulfurization method, a wet desulfurization method and a biological desulfurization method, and the biogas purification technologies comprise a physical adsorption method, a chemical absorption method, a pressure swing adsorption method, a membrane separation method and a low-temperature separation method. Although biogas purification processes are numerous, the defects of simple and inefficient treatment method, low renewable rate of consumables, inaccurate control, low automation degree and the like generally exist, such as: in the traditional biological desulfurization method, because the temperature, the pH value and the oxygen content of the spray liquid are not accurately controlled in the production process and the nutrient solution is supplemented in time, the sulfur bacteria are slow in growth and metabolism, the sulfur dioxide in the methane can not be effectively removed, and the problems of manpower resource waste and secondary pollution are caused.
Accordingly, further developments and improvements are still needed in the art.
SUMMERY OF THE UTILITY MODEL
Aiming at various defects in the prior art, in order to solve the problems, a biogas purification system is provided. The utility model provides a following technical scheme:
the utility model provides a marsh gas purification system, includes biogas piping, purification system and is used for controlling purification system's automatic control system, purification system is including the double-deck biological desulfurization system of packing, one-level dewatering system, multilayer filler dry process desulfurization system, second grade dewatering system, pressure swing adsorption system, exhaust-gas treatment system and the automatic control system that connect gradually, the automatic control system is including the detection transmission unit, analytical element and the execution unit that connect gradually, detect the transmission unit with the execution unit all connect in purification system forms the closed loop.
Furthermore, the double-layer filler biological desulfurization system comprises two desulfurization towers which are arranged in an up-and-down overlapping mode and a first pneumatic valve used for controlling methane to enter or avoid the double-layer filler biological desulfurization system, a filler layer used for culturing microorganisms and a spray liquid nozzle used for adjusting work and nutrition for the microorganisms are arranged in each desulfurization tower, and the spray liquid nozzle is arranged above the filler layer.
The device further comprises a spraying liquid pool, a nutrient solution pool, an alkali pool, a heat source device for adjusting heat source water supply and an aeration fan for promoting water body to circulate in an accelerated manner, wherein the heat source device, the alkali pool and the nutrient solution pool are all in operable communication with the spraying liquid pool.
Furthermore, the primary dehydration system comprises a water condenser and a primary cold dryer which are connected with each other, a feed inlet of the water condenser is communicated with a discharge outlet of the double-layer filler biological desulfurization system, and the water condenser comprises an automatic drain pipe, a magnetic turning plate liquid level meter and a first pneumatic valve used for controlling biogas to enter the water condenser.
Further, the water condenser is arranged at the lowest point of the methane pipeline.
Furthermore, the multilayer filler dry desulfurization system comprises a plurality of methane baffles and a plurality of snake-shaped desulfurizer layers which are arranged in a staggered manner from top to bottom, wherein the methane baffles are obliquely arranged below each desulfurizer layer, and the upper desulfurizer layer and the lower desulfurizer layer which are adjacent to each other are communicated through holes to form an S-shaped channel.
Furthermore, the secondary dehydration system comprises a filter and a secondary cooling dryer which are used for removing biogas dust particles mixed in the multilayer filler dry desulfurization system, and a second pneumatic valve which is used for controlling biogas to enter or avoid the secondary dehydration system, wherein the front end and the rear end of the filter are respectively communicated with a discharge hole of the multilayer filler dry desulfurization system and a feed hole of the secondary cooling dryer.
Furthermore, the pressure swing adsorption system comprises a booster fan, 2 pressure swing adsorption devices and a third pneumatic valve used for controlling methane to enter or avoid the pressure swing adsorption system, the pressure swing adsorption devices comprise molecular sieves used for adsorbing carbon dioxide and screening out methane molecules, and the front and the back of the booster fan are respectively communicated with a discharge hole of the secondary dehydration system and a feed hole of the pressure swing adsorption device.
Furthermore, the waste gas treatment system comprises a vacuum fan and a waste gas treatment tower which alternately operate, wherein the front end and the rear end of the vacuum fan are respectively communicated with a discharge hole of the pressure swing adsorption system and a feed hole of the waste gas treatment tower.
Furthermore, the automatic control system also comprises an engineer station and a touch screen for displaying temperature, pressure, PH value, hydrogen sulfide content and methane content information and performing touch operation.
Has the advantages that:
1. the automatic degree is high, and control is accurate, only needs a small amount of manual work to overhaul and maintain regularly, realizes unmanned on duty, improves work production efficiency, reduces artifical use amount and workman intensity of labour. Meanwhile, the biogas containing hydrogen sulfide, carbon dioxide and moisture can be effectively removed;
2. maintenance personnel can set the input or the cut-off of each system through the touch screen of the automatic control system, and the pneumatic valve is switched automatically, so that the system is convenient to overhaul and maintain, and the integral shutdown caused by the fault of a certain system is avoided;
3. harmful gas is effectively removed from the generated waste gas through a waste gas treatment tower, so that the environmental pollution is reduced;
4. the dry-type desulfurization system and the pressure swing adsorption system can be regenerated, so that resources are saved, and energy consumption is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a biogas purification system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a partial structure of a double-layer packing biological desulfurization system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a water condenser according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a dry desulfurization tower according to an embodiment of the present invention;
in the attached drawing, 1, a double-layer packing biological desulfurization tower; 101. a spray liquid discharge pipe; 102. a spray liquid inlet pipe; 103. a spray liquid nozzle; 104. a biogas inlet pipe; 105. a packing layer; 106. a spray liquid discharge check valve; 107. a biogas outlet pipe; 108. a first biogas baffle; 109. supporting with a filler; 2. a spray liquid pool; 3. a nutrient solution pool; 4. an alkali pool; 5. a water condenser; 501. automatic water draining pipe; 502. a biogas inlet; 503. a second pneumatic valve; 504. the condenser is connected with a buckle; 505. the inner wall of the condenser; 506. a magnetic flap level gauge; 507. a biogas outlet; 6. a first-stage cold drying machine; 7. a dry desulfurization tower; 701. an air inlet; 702. a biogas inlet; 703. a check valve; 704. a manhole; 705. a drainage sloping plate; 706. a water discharge pneumatic valve; 707. supporting a desulfurizing agent; 708. a desulfurizing agent layer; 709. a second biogas baffle; 710. a biogas outlet pipe; 8. a filter; 9. a secondary cooling dryer; 10. a pressure swing adsorption device; 11. a waste gas treatment tower; 12. a heat source device; 13. a spray pump; 14. an aeration fan; 15. a nutrient solution pump; 16. an alkaline liquid pump; 17. a booster fan; 18. a vacuum fan; 19. a proportional regulating valve.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
As shown in fig. 1-4, a biogas purification system comprises a biogas pipeline, a purification system and an automatic control system for controlling the purification system, wherein the purification system comprises a double-layer filler biological desulfurization system, a primary dehydration system, a multi-layer filler dry desulfurization system, a secondary dehydration system, a pressure swing adsorption system, a waste gas treatment system and an automatic control system which are connected in sequence, the automatic control system comprises a detection transmission unit, an analysis unit and an execution unit which are connected in sequence, and the detection transmission unit and the execution unit are connected to the purification system to form a closed loop.
Furthermore, the double-layer filler biological desulfurization system comprises two desulfurization towers which are arranged in an up-down overlapping mode and a first pneumatic valve used for controlling methane to enter or avoid the double-layer filler biological desulfurization system, and the two desulfurization towers form a double-layer filler biological desulfurization tower 1. Each desulfurizing tower is provided with a packing layer 105 for culturing microorganisms and a spray liquid nozzle 103 for adjusting work and nutrition of the microorganisms, and the spray liquid nozzle 103 is arranged above the packing layer 105.
Specifically, a spray liquid drainage check valve 106 is connected between the two desulfurization towers; a filler support 109 is arranged below the filler layer 105; a plurality of spraying liquid spray heads 103 are horizontally arranged side by side, and the upper ends of the spraying liquid spray heads 103 are communicated with a spraying liquid inlet pipe 102; the top of the upper desulfurizing tower is provided with a methane outlet pipe 107, and the bottom of the lower desulfurizing tower is provided with a spray liquid discharge pipe 101; a biogas inlet pipe 104 communicated with the outside of the desulfurization tower is arranged below the packing layer 105 of the lower desulfurization tower, and the biogas inlet pipe 104 extends upwards from the middle of the packing layer 105 and folds downwards from the upper part of the packing layer 105; the bottom of the upper desulfurizing tower is provided with an inverted funnel-shaped first biogas baffle 108, the upper part of the first biogas baffle 108 extends to the upper part of the packing layer 105, and the first biogas baffle continues to bend downwards; a funnel-shaped spray liquid discharge pipe 101 for recovering spray liquid is arranged below the lower desulfurization tower.
The device further comprises a spraying liquid pool 2, a nutrient solution pool 3, an alkali pool 4, a heat source device 12 for adjusting heat source water supply, and an aeration fan 14 for promoting water body to circulate in an accelerated manner, wherein the heat source device 12, the alkali pool 4 and the nutrient solution pool 3 are all in operable communication with the spraying liquid pool 2, a nutrient solution pump 15 for conveying nutrient solution is connected outside the nutrient solution pool 3, and an alkali solution pump 16 for conveying alkali solution is connected outside the alkali pool 4. The spray liquid pool 2 is communicated with the spray liquid spray head 103 through a pipeline, and a spray pump 13 is arranged between the spray liquid pool and the spray liquid spray head to provide power; a proportion regulating valve 19 for controlling the proportion of hot water is connected between the heat source device 12 and the spray liquid pool 2; specifically, the spray will wash out acidic products and provide nutrients for the microorganisms; the aeration fan 14 aerates the regeneration tank to ensure that the spraying liquid is in a micro-aerobic state; the heat source device 12 adopts an external heat source method, and controls the temperature of the spray liquid at 30-35 ℃ by adjusting the proportion adjusting valve 19; nutrient solution and alkali liquor are added into the spraying pool regularly through a nutrient solution pump 15 and an alkali liquor pump 16, so that the spraying solution is rich in the nutrient solution, and the pH value is maintained to be more than 6.0. The bottom of the spray liquid pool 2 has a 5% gradient towards one side, and a sludge tank is arranged, so that the generated biological sludge can be conveniently discharged. The optimal PH value, temperature, reaction time and oxygen content are controlled in the spray liquid pool 2, and the content of hydrogen sulfide in the biogas can be reduced to more than 95%.
Specifically, microorganisms grow on the filler, and hydrogen sulfide and oxygen generate elemental sulfur through the action of the microorganisms; the solution in the alkali pool 4 is NaOH solution; the nutrient solution adopts supernatant fluid of dehydrated sludge; the bottom of the spray liquid pool 2 has a 5% gradient towards one side and is provided with a sludge groove, and the generated biological sludge is discharged through a sewage outlet.
Further, the primary dehydration system comprises a water condenser 5 and a primary refrigeration dryer 6 which are connected with each other, a feed inlet of the water condenser 5 is communicated with a discharge outlet of the double-layer filler biological desulfurization system, and the water condenser 5 comprises an automatic drain pipe 501, a magnetic turning plate liquid level meter 506 and a second pneumatic valve 503 for controlling biogas to enter the water condenser 5. Specifically, the second pneumatic valve 503 is arranged at the bottom of the water condenser 5, and the magnetic turning plate liquid level meter 506 is matched with the pneumatic drainage hydraulic valve, so that the automatic drainage function is realized, and manual drainage is not needed.
Further, the water condenser 5 is arranged at the lowest point of the biogas pipeline, condensed water in the biogas is removed to reduce the load of the dehydration device of the primary cold dryer 6, and the primary cold dryer 6 is used for fine dehydration to ensure that the subsequent dry desulfurization can not cause the excessive moisture in the biogas to cause the over-wet, caking or muddy desulfurizer layer 708. Specifically, the water condenser 5 further comprises a biogas inlet 502, a condenser inner wall 505, a biogas outlet 507, and a condenser connecting buckle 504 for mounting and fixing, wherein the biogas inlet 502 and the biogas outlet 507 are symmetrically arranged on two sides of the condenser inner wall 505, the condenser inner wall 505 contains condensate, one end of the automatic drain pipe 501 extends downwards into the condensate, and the other end of the automatic drain pipe passes through the condenser inner wall 505.
Further, the multilayer filler dry desulfurization system comprises 2 dry desulfurization devices, each dry desulfurization device comprises a plurality of second biogas baffles 709 and a plurality of snake-shaped desulfurizer layers 708 which are staggered up and down, the second biogas baffles 709 are obliquely arranged below each desulfurizer layer 708, a desulfurizer support 707 is fixedly connected below each desulfurizer layer 708, and the upper desulfurizer layer 708 and the lower desulfurizer layer 708 which are adjacent up and down are communicated into an S-shaped channel through a through hole.
Specifically, the top and the side of the dry desulfurization device are provided with a plurality of manholes 704, so that the maintenance is convenient; the bottom of the dry desulphurization device is provided with an air inlet 701 and a biogas inlet 702, and a check valve 703 is arranged below each second biogas baffle 709; the bottom of the dry desulfurization device is provided with a drainage inclined plate 705 which is inclined downwards from an air inlet 701 and extends to the other end, and a drainage pneumatic valve 706 is arranged on the side wall of the dry desulfurization device close to the lower end of the drainage inclined plate 705; the top of the dry desulphurization device is provided with a biogas outlet pipe 710.
Specifically, the desulfurizer layers 708 are arranged in the vertical direction into a left row and a right row of dry-type desulfurization towers 7, the left row and the right row of dry-type desulfurization towers 7 are arranged in a separated manner, the left row and the right row are respectively provided with 3 desulfurizer layers 708, holes are reserved in the middles of the desulfurizer layers and communicated with each other, and biogas flows through each desulfurization layer under the action of the partition plate. A check valve 703 is arranged at the drainage position of the second biogas baffle 709, and the bottom of the desulfurization tower is in a 5% slope, so that the generated water can be conveniently drained; the biogas passes through a desulfurizer layer 708 of a multilayer filler dry-type desulfurizing tower 7, hydrogen sulfide in the biogas is contacted with ferric oxide to generate ferric trisulfide, when the mass fraction of the ferric trisulfide in the desulfurizer layer 708 reaches more than 30%, the desulfurizing effect is obviously reduced, a valve in a biogas pipeline is switched by monitoring the concentration of the hydrogen sulfide at an outlet or setting time, and the biogas is desulfurized by using another dry-type desulfurizing tower 7. The desulfurizer layer 708 containing sulfides in the original dry desulfurization tower 7 is contacted with oxygen in the air, and the iron trisulfide is converted into iron oxide and elemental sulfur.
The desulfurization regeneration can be circulated for many times, and the hydrogen sulfide in the methane after the dry desulfurization is less than or equal to 20mg/m 3 . The 2 sets of dry desulfurization devices are designed to realize continuous production, wherein one set regenerates or replaces the desulfurizer layer 708, and the other set can still meet the use requirement.
Further, the secondary dehydration system comprises a filter 8 and a secondary cooling dryer 9 for removing biogas dust particles mixed in the multilayer filler dry desulfurization system, and a second pneumatic valve 503 for controlling biogas to enter or avoid the secondary dehydration system, wherein the front end and the rear end of the filter 8 are respectively communicated with a discharge hole of the multilayer filler dry desulfurization system and a feed hole of the secondary cooling dryer 9.
Further, the pressure swing adsorption system comprises a booster fan 17, 2 pressure swing adsorption devices 10 and a third pneumatic valve for controlling methane to enter the pressure swing adsorption system, the pressure swing adsorption device 10 comprises a molecular sieve for adsorbing carbon dioxide and sieving out methane molecules, and the front and the back of the booster fan 17 are respectively communicated with a discharge hole of the secondary dehydration system and a feed hole of the pressure swing adsorption device 10. Specifically, 2 pressure swing adsorption devices 10 are connected with a valve in a methane pipeline for switching the pressure swing adsorption devices 10, methane enters the pressure swing adsorption devices 10 containing molecular sieves under the pressurization condition, most of carbon dioxide can be adsorbed on the surfaces of the molecular sieves, and most of methane is discharged through the molecular sieves, so that pure natural gas for users is formed. When the adsorption is saturated, the valve in the biogas pipe line is switched, and the other pressure swing adsorption device 10 is used for continuing working.
Further, the waste gas treatment system comprises a vacuum fan 18 and a waste gas treatment tower 11 which alternately operate, wherein the front end and the rear end of the vacuum fan 18 are respectively communicated with a discharge hole of the pressure swing adsorption system and a feed hole of the waste gas treatment tower 11. The vacuum blower 18 evacuates the pressure swing adsorption apparatus 10 to release the adsorbed carbon dioxide, and after the evacuation is completed, the regeneration of the pressure swing adsorption apparatus 10 is completed. The waste gas treatment tower 11 is provided with activated carbon for adsorbing hydrogen sulfide, and carbon dioxide is discharged through the waste gas treatment tower 11.
Furthermore, the automatic control system also comprises an engineer station and a touch screen for displaying temperature, pressure, PH value, hydrogen sulfide content and methane content information and performing touch operation.
Engineers program control programs to download to the control unit through engineer stations, and field maintenance personnel control system parameter settings such as spray liquid temperature and pressure of the pressure swing adsorption device 10 biogas through a touch screen. The detection transmission unit monitors the temperature, pressure, PH value, hydrogen sulfide content, methane content and other data of the system in real time and transmits the data to the control unit, and the control unit analyzes the data and controls the second pneumatic valve 503, the lye pump 16, the aeration fan 14 and other equipment to work through the execution unit, so that the automation of the production process is realized.
The system has high automation degree and accurate control, only needs a small amount of manual work to periodically overhaul and maintain, realizes unattended operation, improves the labor production efficiency, and reduces the manual use amount and the working intensity of workers. Meanwhile, hydrogen sulfide, carbon dioxide and moisture contained in the biogas can be effectively removed. Maintenance personnel can set the input or the cut-off of each system through the touch screen of the automatic control system, and through the automatic switching of each pneumatic valve, the system is convenient to overhaul and maintain, and the integral shutdown caused by the fault of a certain system is avoided. The generated waste gas effectively removes harmful gas through the waste gas treatment tower 11, and reduces environmental pollution. The dry-type desulfurization system and the pressure swing adsorption system can be regenerated, so that resources are saved, and energy consumption is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (10)
1. The biogas purification system is characterized by comprising a biogas pipeline, a purification system and an automatic control system for controlling the purification system, wherein the purification system comprises a double-layer filler biological desulfurization system, a primary dehydration system, a multi-layer filler dry desulfurization system, a secondary dehydration system, a pressure swing adsorption system, a waste gas treatment system and an automatic control system which are sequentially connected, the automatic control system comprises a detection transmission unit, an analysis unit and an execution unit which are sequentially connected, and the detection transmission unit and the execution unit are connected with the purification system to form a closed loop.
2. The biogas purification system according to claim 1, wherein the double-layer filler biological desulfurization system comprises two desulfurization towers which are arranged in an up-down overlapping manner and a first pneumatic valve for controlling biogas to enter or avoid the double-layer filler biological desulfurization system, each desulfurization tower is provided with a filler layer for culturing microorganisms and a spray liquid nozzle for adjusting work and nutrition to the microorganisms, and the spray liquid nozzle is arranged above the filler layer.
3. The biogas purification system according to claim 1, further comprising a spray tank, a nutrient tank, an alkali tank, a heat source device for adjusting the supply of heat source water, and an aeration fan for promoting the accelerated circulation of water, wherein the heat source device, the alkali tank, and the nutrient tank are all in operable communication with the spray tank.
4. The biogas purification system according to claim 1, wherein the primary dehydration system comprises a water condenser and a primary cold dryer which are connected with each other, a feed inlet of the water condenser is communicated with a discharge outlet of the double-layer filler biological desulfurization system, and the water condenser comprises an automatic drain pipe, a magnetic turning plate liquid level meter and a first pneumatic valve for controlling biogas to enter the water condenser.
5. The biogas purification system according to claim 4, wherein the water condenser is disposed at the lowest point of the biogas pipeline.
6. The biogas purification system according to claim 1, wherein the multi-layer filler dry desulfurization system comprises a plurality of second biogas baffles and a plurality of snake-shaped desulfurizer layers which are staggered up and down, the second biogas baffles are obliquely arranged below each desulfurizer layer, and the upper desulfurizer layer and the lower desulfurizer layer are communicated with each other through holes to form an S-shaped channel.
7. The biogas purification system according to claim 1, wherein the secondary dehydration system comprises a filter and a secondary cooling dryer for removing dust particles mixed in the multilayer filler dry desulfurization system, and a second pneumatic valve for controlling biogas to enter the secondary dehydration system, and the front end and the rear end of the filter are respectively communicated with the discharge port of the multilayer filler dry desulfurization system and the feed port of the secondary cooling dryer.
8. The biogas purification system according to claim 1, wherein the pressure swing adsorption system comprises a booster fan, 2 pressure swing adsorption devices and a third pneumatic valve for controlling biogas to enter the pressure swing adsorption system, the pressure swing adsorption devices comprise molecular sieves for adsorbing carbon dioxide and screening out methane molecules, and the front and rear of the booster fan are respectively communicated with the discharge port of the secondary dehydration system and the feed port of the pressure swing adsorption device.
9. The biogas purification system according to claim 1, wherein the waste gas treatment system comprises a vacuum fan and a waste gas treatment tower which alternately operate, and the front end and the rear end of the vacuum fan are respectively communicated with the discharge hole of the pressure swing adsorption system and the feed hole of the waste gas treatment tower.
10. The biogas purification system according to claim 1, wherein the automatic control system further comprises an engineer station and a touch screen for displaying information of temperature, pressure, PH, hydrogen sulfide content, methane content and performing touch operations.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112080401A (en) * | 2020-09-22 | 2020-12-15 | 四川光和兴科技有限公司 | Safe production system of high concentration marsh gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112080401A (en) * | 2020-09-22 | 2020-12-15 | 四川光和兴科技有限公司 | Safe production system of high concentration marsh gas |
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