CN112080401A - Safe production system of high concentration marsh gas - Google Patents
Safe production system of high concentration marsh gas Download PDFInfo
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- CN112080401A CN112080401A CN202011002439.XA CN202011002439A CN112080401A CN 112080401 A CN112080401 A CN 112080401A CN 202011002439 A CN202011002439 A CN 202011002439A CN 112080401 A CN112080401 A CN 112080401A
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- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
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Abstract
The invention discloses a safe production system of high-concentration methane, which comprises a methane tank, a gas collecting tank, a filtering device and a purifying tank, wherein the methane tank comprises a fermentation tank body, a raw material storage tank and a slag discharging tank which are communicated with the fermentation tank body, the fermentation tank body is connected with the gas collecting tank, one side of the gas collecting tank is connected with the filtering device, the rear side of the filtering device is connected with the purifying tank, and the purifying tank is communicated with a gas supply pipeline. According to the invention, the fermentation tank body is arranged, the heat supply pipe support and the exhaust mechanism are arranged in the fermentation tank body, and the gas collection tank is matched, so that the methane generated in the methane fermentation process can be rapidly discharged, the methane content in the methane is rapidly increased, the methane can be conveniently purified in the later period, and the high-concentration methane can be conveniently obtained.
Description
Technical Field
The invention relates to the field of methane production, in particular to a safe production system of high-concentration methane.
Background
Biogas is a mixed gas whose main component is methane and secondly carbon dioxide, hydrogen sulfide, nitrogen and other components. In the composition of the biogas, combustible components comprise methane, hydrogen sulfide, carbon monoxide, heavy hydrocarbon and other gases; the non-combustible components include gases such as carbon dioxide, nitrogen and ammonia. In the methane component, the content of methane is 55-70%, the content of carbon dioxide is 28-44%, and the average content of hydrogen sulfide is 0.034%. The methane content in the biogas is 55-70%, which means that the biogas can generate larger waste gas after combustion, and the combustion ratio is not high, so that air pollution is caused, and therefore, the improvement of the methane content in the biogas plays an important role in environmental protection and energy conversion.
Disclosure of Invention
The invention aims to provide a safe production system of high-concentration biogas.
The purpose of the invention is realized by the following technical scheme:
the safe production system of the high-concentration marsh gas comprises a marsh gas tank, a gas collecting tank, a filtering device and a purifying tank, wherein the marsh gas tank comprises a fermentation tank body, a raw material storage tank communicated with the fermentation tank body and a deslagging tank, the fermentation tank body is connected with the gas collecting tank, one side of the gas collecting tank is connected with the filtering device, the rear side of the filtering device is connected with the purifying tank, and the purifying tank is communicated with a gas supply pipeline.
Be equipped with heat supply pipe support, exhaust mechanism and spiral in the fermentation vat body and stir the cage, heat supply pipe support telescopic installs in the fermentation vat body, the detachable support is installed to heat supply pipe support top, install exhaust mechanism and spiral on the support and stir the cage, exhaust mechanism includes that vertical and rotatable pivot of installing on the support and evenly install the stirring nipple joint on the pivot lateral wall, the spiral stirs the cage level and rotationally installs at the support middle part, be equipped with respectively on the support and drive pivot and spiral and stir cage pivoted waterproof motor.
The fermentation tank is characterized in that a cover plate is installed at the top of the fermentation tank body and is in sealing connection with the fermentation tank body, a gas collecting hood is processed in the middle of the cover plate and is communicated with a gas collecting tank through a gas exhaust pipe, and a first check valve for preventing methane from flowing back is arranged in the gas exhaust pipe.
The gas collecting tank comprises a vertically arranged tank body, an organ sleeve, a push rod and a liquid storage tray, the organ sleeve is installed in the tank body at the lower part of the tank body, the bottom of the organ sleeve is connected with the inner wall of the tank body in a sealing mode, a push plate is installed at the top of the organ sleeve, the push rod connected with the push plate is installed at the top of the tank body, the push rod and the push plate are connected through a tension spring, an exhaust pipe communicated with a fermentation tank body and an excess pipe communicated with a filtering device are installed on the tank body below the organ sleeve, a second check valve is installed in the excess pipe, and the bottom of.
The filter device comprises a dry-type desulfurizing tower and a wet-type desulfurizing tower, the transition pipe is provided with a three-way pipe connected with the dry-type desulfurizing tower and the wet-type desulfurizing tower in parallel, two outlets of the three-way pipe are respectively provided with an electromagnetic valve, the electromagnetic valves are started through a controller, the transition pipe is internally provided with a flow sensor, and the flow sensor is connected with the controller.
The dry-type desulfurizing tower is equipped with third check valve and fourth check valve with the export of wet-type desulfurizing tower respectively, and dry-type desulfurizing tower and wet-type desulfurizing tower all communicate with the purification jar.
An air compressor for compressing the biogas is arranged at the inlet of the purification tank, and a plurality of layers of separation membranes are arranged in the purification tank.
The upper part of the fermentation tank body is provided with a methane concentration sensor and a pressure sensor which are both connected with a controller.
The safe production system of high-concentration methane provided by the invention has the beneficial effects that:
(1) by arranging the fermentation tank body, arranging the heat supply pipe frame and the exhaust mechanism in the fermentation tank body and matching with the gas collecting tank, the methane generated in the methane fermentation process can be quickly discharged, so that the methane content in the methane is quickly increased, the methane can be conveniently purified in the later period, and the high-concentration methane can be conveniently obtained;
(2) the push rod and the organ sleeve are arranged in the gas collection tank, so that the gas collection tank can quickly contain high-pressure methane released in the fermentation tank body, the methane tank is prevented from exploding due to overlarge methane pressure, and the safety of the methane production process is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention.
FIG. 2 is a schematic view of the internal structure of the methane tank according to the embodiment of the present invention.
Fig. 3 is a schematic view of an internal structure of a gas collecting tank according to an embodiment of the present invention.
Reference numerals: 1. a biogas generating pit; 11. a fermentation tank body; 111. a heat supply pipe frame; 112. an exhaust mechanism; 113. a rotating shaft; 114. stirring the short section; 115. a spiral stirring cage; 116. a support; 117. a waterproof motor; 12. a raw material storage pool; 13. a slag discharging pool; 14. a cover plate; 141. a gas-collecting hood; 142. a first check valve; 2. a gas collection tank; 21. a tank body; 22. an organ sleeve; 23. a push rod; 24. a liquid storage tray; 25. a tension spring; 26. a transition pipe; 27. a three-way pipeline; 28. an electromagnetic valve; 29. a second check valve; 3. a filtration device; 31. a dry desulfurization tower; 32. a wet desulfurization tower; 4. a purification tank; 41. an air compressor; 42. a separation membrane; 5. a controller; 51. a flow sensor; 52. a methane concentration sensor; 53. a pressure sensor.
Detailed Description
Examples
As shown in fig. 1 to 3, the system for safely producing high-concentration biogas provided in this embodiment includes a biogas generating pit 1, a gas collecting tank 2, a filtering device 3 and a purifying tank 4, the biogas generating pit 1 includes a fermentation tank body 11, a raw material storage tank 12 communicated with the fermentation tank body 11 and a slag discharge tank 13, a heat supply pipe support 111, an exhaust mechanism 112 and a spiral stirring cage 115 are arranged in the fermentation tank body 11, the heat supply pipe support 111 is telescopically installed in the fermentation tank body 11, a detachable support 116 is installed above the heat supply pipe support 111, the support 116 is provided with the exhaust mechanism 112 and the spiral stirring cage 115 for moving waste materials, the exhaust mechanism 112 includes a rotating shaft 113 vertically and rotatably installed on the support 116 and stirring short sections 114 evenly installed on the side walls of the rotating shaft 113, when in use, the rotating shaft 113 drives the stirring short sections 114 to rotate for accelerating the biogas stored in, the spiral stirring cage 115 is horizontally and rotatably arranged in the middle of the support 116, the spiral stirring cage 115 can drive waste materials in the fermentation tank body 11 to move towards the deslagging tank 13 when rotating so as to facilitate fresh materials to enter the methane tank 1, and the support 116 is respectively provided with a waterproof motor 117 for driving the rotating shaft 113 and the spiral stirring cage 115 to rotate. The fermentation tank is characterized in that a biogas concentration sensor 52 and a pressure sensor 53 are arranged at the upper part of the fermentation tank body 11, a cover plate 14 is arranged at the top of the fermentation tank body 11, the cover plate 14 is hermetically connected with the fermentation tank body 11, a gas collecting hood 141 is processed at the middle part of the cover plate 14, the gas collecting hood 141 is communicated with the gas collecting tank 2 through an exhaust pipe, and a first check valve 142 for preventing biogas from flowing back is arranged in the exhaust pipe. The fermentation tank body 11 is connected with a gas collecting tank 2, and one side of the gas collecting tank 2 is connected with a filtering device 3.
As shown in fig. 3, the gas collection tank 2 includes a tank body 21, an organ sleeve 22, a push rod 23 and a liquid storage tray 24, the tank body 21 is provided with the organ sleeve 22, the bottom of the organ sleeve 22 is connected with the inner wall of the tank body 21 in a sealing manner, the top of the organ sleeve 22 is provided with a push plate, the top of the tank body 21 is provided with the push rod 23 connected with the push plate, the push rod 23 is connected with the push plate through a tension spring 25, the tank body 21 below the organ sleeve 22 is provided with an exhaust pipe communicated with the fermentation tank body 11 and a transition pipe 26 communicated with the filtering device 3, the transition pipe 26 is provided with a second check valve 29, and the bottom of the tank body 21 is provided with the liquid storage tray. The filtering device 3 comprises a dry-type desulfurizing tower 31 and a wet-type desulfurizing tower 32, a three-way pipe 27 connected with the dry-type desulfurizing tower 31 and the wet-type desulfurizing tower 32 in parallel is arranged on the transition pipe 26, electromagnetic valves 28 are arranged at two outlets of the three-way pipe 27, the electromagnetic valves 28 are started through a controller 5, a flow sensor 51 is arranged in the transition pipe 26, the flow sensor 51 is connected with the controller 5, the controller 5 controls the corresponding outlet of the three-way pipe 27 to be opened according to the feedback speed of the flow sensor 51, and the methane concentration sensor 52 and the pressure sensor 53 are both connected with the controller 5. The outlets of the dry desulfurization tower 31 and the wet desulfurization tower 32 are respectively provided with a third check valve and a fourth check valve, and the dry desulfurization tower 31 and the wet desulfurization tower 32 are both communicated with the purification tank 4.
The rear side of the filtering device 3 is connected with a purifying tank 4, and the purifying tank 4 is communicated with an air supply pipeline. An air compressor 41 for compressing the biogas is arranged at the inlet of the purification tank 4, and a multilayer separation membrane 42 is arranged in the purification tank 4.
The using method of the invention is as follows:
when in use, the produced raw materials are sent into a raw material storage tank 12, the raw materials flow into a fermentation tank body 11, then the heat supply pipe frame 111 is put into the fermentation tank body 11, the biogas raw material is heated by the heat supply pipe frame 111, so that the raw material can be fermented at a proper temperature, the exhaust mechanism 112 is intermittently started during the fermentation, is used for filling the fermentation tank body 11 with the heated raw materials to accelerate the fermentation progress of the methane, then a small amount of methane during the methane fermentation is filled in the space at the upper part of the fermentation tank body 11, at the moment, the push rod 23 controls the reciprocating speed according to the pressure condition fed back by the pressure sensor 53, when the push rod 23 drives the organ sleeve 22 to move upwards, the marsh gas at the upper part of the fermentation tank body 11 is sucked into the gas collecting tank 2, then the push rod 23 drives the organ sleeve 22 to move downwards, the methane in the gas collecting tank 2 is pressed and conveyed into the dry desulfurizing tower 31 of the dry filtering device 3, and the high-concentration methane is filtered out through the separation membrane 42 in the purifying tank 4 after being filtered; when the biogas reaches the fermentation period, the fermentation amount of the biogas is suddenly increased, the waterproof motor 117 drives the exhaust mechanism 112 to rapidly rotate in the biogas, so that the biogas contained in the biogas is rapidly separated from biogas residues, thereby increasing the yield of the biogas, when the pressure sensor 53 detects that the pressure value is increased, the push rod 23 is accelerated, in order to prevent the biogas from being increased to cause leakage or explosion of the biogas digester 1, at the moment, in order to ensure the desulfurization efficiency of the biogas, the three-way pipeline 27 opens the channel of the wet desulfurization tower 32, the desulfurization is performed through the wet desulfurization tower 32, and after the biogas is desulfurized, the biogas is rapidly extracted under the action of the air compressor 41 and enters the gas supply pipeline, thereby increasing the yield of the high-concentration biogas.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the scope of the present invention. It should be noted that structures or components illustrated in the drawings are not necessarily drawn to scale, and descriptions of well-known components and processing techniques and procedures are omitted to avoid unnecessarily limiting the invention.
Claims (8)
1. A high concentration marsh gas's safety production system which characterized in that: the biogas digester comprises a biogas digester body, a gas collection tank, a filtering device and a purifying tank, wherein the biogas digester body comprises a fermentation tank body, a raw material storage tank communicated with the fermentation tank body and a slag discharge tank, the gas collection tank is connected to the fermentation tank body, the filtering device is connected to one side of the gas collection tank, the purifying tank is connected to the rear side of the filtering device, and the purifying tank is communicated with an air supply pipeline.
2. The system for safely producing high concentration biogas according to claim 1, wherein: be equipped with heat supply pipe support, exhaust mechanism and spiral in the fermentation vat body and stir the cage, heat supply pipe support telescopic installs in the fermentation vat body, the detachable support is installed to heat supply pipe support top, install exhaust mechanism and spiral on the support and stir the cage, exhaust mechanism includes that vertical and rotatable pivot of installing on the support and evenly install the stirring nipple joint on the pivot lateral wall, the spiral stirs the cage level and rotationally installs at the support middle part, be equipped with respectively on the support and drive pivot and spiral and stir cage pivoted waterproof motor.
3. The system for safely producing high concentration biogas according to claim 1, wherein: the fermentation tank is characterized in that a cover plate is installed at the top of the fermentation tank body and is in sealing connection with the fermentation tank body, a gas collecting hood is processed in the middle of the cover plate and is communicated with a gas collecting tank through a gas exhaust pipe, and a first check valve for preventing methane from flowing back is arranged in the gas exhaust pipe.
4. The system for safely producing high concentration biogas according to claim 3, wherein: the gas collecting tank comprises a vertically arranged tank body, an organ sleeve, a push rod and a liquid storage tray, the organ sleeve is installed in the tank body at the lower part of the tank body, the bottom of the organ sleeve is connected with the inner wall of the tank body in a sealing mode, a push plate is installed at the top of the organ sleeve, the push rod connected with the push plate is installed at the top of the tank body, the push rod and the push plate are connected through a tension spring, an exhaust pipe communicated with a fermentation tank body and an excess pipe communicated with a filtering device are installed on the tank body below the organ sleeve, a second check valve is installed in the excess pipe, and the bottom of.
5. The system for safely producing high concentration biogas according to claim 4, wherein: the filter device comprises a dry-type desulfurizing tower and a wet-type desulfurizing tower, the transition pipe is provided with a three-way pipe connected with the dry-type desulfurizing tower and the wet-type desulfurizing tower in parallel, two outlets of the three-way pipe are respectively provided with an electromagnetic valve, the electromagnetic valves are started through a controller, the transition pipe is internally provided with a flow sensor, and the flow sensor is connected with the controller.
6. The system for safely producing high concentration biogas according to claim 5, wherein: the dry-type desulfurizing tower is equipped with third check valve and fourth check valve with the export of wet-type desulfurizing tower respectively, and dry-type desulfurizing tower and wet-type desulfurizing tower all communicate with the purification jar.
7. The system for safely producing high concentration biogas according to claim 1, wherein: an air compressor for compressing the biogas is arranged at the inlet of the purification tank, and a plurality of layers of separation membranes are arranged in the purification tank.
8. The system for safely producing high concentration biogas according to claim 5, wherein: the upper part of the fermentation tank body is provided with a methane concentration sensor and a pressure sensor which are both connected with a controller.
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| CN202011002439.XA CN112080401B (en) | 2020-09-22 | 2020-09-22 | Safety production system of high concentration marsh gas |
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| CN202011002439.XA CN112080401B (en) | 2020-09-22 | 2020-09-22 | Safety 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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| CN112626130A (en) * | 2021-01-07 | 2021-04-09 | 安庆市绿巨人环境技术股份有限公司 | Wet anaerobic fermentation method |
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