CN203212569U - Air pressure type biogas digester with circulating stirrer - Google Patents
Air pressure type biogas digester with circulating stirrer Download PDFInfo
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- CN203212569U CN203212569U CN2013201265477U CN201320126547U CN203212569U CN 203212569 U CN203212569 U CN 203212569U CN 2013201265477 U CN2013201265477 U CN 2013201265477U CN 201320126547 U CN201320126547 U CN 201320126547U CN 203212569 U CN203212569 U CN 203212569U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The utility model relates to a biogas production device, specifically an air pressure type biogas digester with a circulating stirrer. The biogas digester is divided into an upper part and a lower part; a gas collecting chamber for storing the biogas is arranged on the ground; a biogas purifying device is arranged; the gas collecting chamber is downwards communicated with a fermentation tank and upwards communicated with a biogas gas appliance; the fermentation tank is buried underground and mutually communicated with a charging tube and a discharging room at the two sides of the fermentation tank; a sedimentation tank is arranged in the discharging room; the circulating stirrer is arranged in the biogas digester; a material conveying tube of the stirrer is communicated with the fermentation tank, the gas collecting chamber, the charging tube and the discharging room respectively; the gas collecting chamber is further served as a heating device of the biogas digester; solar energy is used as heat source, so that heated gas in the gas collecting chamber directly contacts with fermentation liquor by a gas conveying tube. A water inlet room of the biogas digester disclosed by the utility model is free of water pressure, high in gas production efficiency and treatment efficiency of the fermentation tank, easy to clean, can conveniently discharge sewage, and has the effects of lowering the content of hydrogen sulfide and carbon dioxide.
Description
Technical field
The utility model relates to a kind of biogas production equipment, is particularly useful for the small-sized methane pond of rural households.
Background technology
The methane-generating pit that use in the tradition rural area all is hydraulic type biomass pool, it is a kind of hydraulic type biomass pool that methane-generating pit is applied pressure at water pressure house, hydraulic type biomass pool on the market has following five big base types now: separate cover-floating type methane-generating pit, A type methane-generating pit, bottom discharging formula methane-generating pit, automatic sludge discharge methane-generating pit, floating cover separate type methane-generating pit, above-mentioned hydraulic type biomass pool is all with the hydraulic pressure basis, but hydraulic type biomass pool produces the problem of biogas and deslagging.
The principle of work of hydraulic type biomass pool is: hydraulic type biomass pool be one by the Primary Fermentation pond () and charging and discharging between (pipe) container of being connected, when intaking to following appropriate location, upper edge, charging and discharging pipe lower end to the Primary Fermentation pond is reinforced, three's water level is concordant, the metal line of this moment is called the zero-pressure line, and at this moment the U-shaped water manometer is presented at zero place.Behind methane tank gas production, close and use air cock, at this moment gas chamber of marsh gas tank is in air-tight state, the biogas that produces can produce pressure to air chamber wall and fermentation liquid level, the fermented liquid of certain volume be pressed into discharge room and feed-pipe (), liquid level in the gas chamber of marsh gas tank descends, and the liquid level between charging and discharging rises, simultaneously the U-shaped water colunm pressure.Along with the increase of gas production rate, the liquid level in the air chamber and the liquid level difference between charging and discharging continue to increase, and the liquid level difference of U-shaped water column also strengthens thereupon.When opening switch and use gas, the fermented liquid between input and output material passes back into fermentation vat, and its liquid level descends, and the liquid level in the fermentation vat rises, and three's waterhead is more and more littler, and at this moment the liquid level difference of U-shaped water column is also more and more littler.When biogas was used up, three's liquid level build-up was to same level between fermentation vat and charging and discharging.Hydraulic type biomass pool has following relative merits:
The body structure stress performance is good, and takes full advantage of the supporting capacity that the spy allows, so labor and material saving, cost is lower.2. be suitable for loading multiple fermentation raw material, particularly a large amount of crop material.3. for ease of frequent charging, lavatory, pigsty can be built in above the methane-generating pit, and ight soil can both be swept into pond at any time.4. all contact with soil around the methane-generating pit, the pond body is incubated another fixed effect.5. change repeatedly owing to air pressure, and generally between 4-16kPa pressure, change.This has disadvantageous effect to pond body intensity and light fixture, stablizing with raising of kitchen range efficiency of combustion.6. scum silica frost crusts easily in the pond, is difficult to fragmentation again, so the utilization ratio of fermentation raw material is not high, it is on the low side that the pond holds factor of created gase, and general factor of created gase only is about 0.15m/md.7. concerning fermentation raw material based on the methane-generating pit of stalk, big discharging work is difficulty relatively.
The domestic relevant patented technology that discloses many hydraulic type biomass pools finds that by retrieval present cheap methane-generating pit is hydraulic type biomass pool mostly, all is not equipped with effective fermented liquid whipping appts, and the biogas output capacity is not high.
[application number] 201210216779.1 for example, [title] hydraulic pressure cover-floating type methane-generating pit, [publication number]: CN102766570A, a kind of hydraulic pressure cover-floating type methane-generating pit is disclosed, by cover cap, the cover wall, the cover body that airway constitutes, cover on container at interior the end, have apart from interlayer between cover wall and the wall of container, be provided with the device in the feed liquid introduced cover, be provided with between the control air storage height between cover cap inner plane and the liquid level greater than 0 device, be provided with and make the cover body freedom locating device that rises and falls up and down, be provided with and drain the slag liquid device, opening for feed exceeds the zero-pressure liquid level, and cover wall height equals in the cover cap between transversal thrust surface product air storage vertically upward maximum output biogas pressure at least divided by the transversal cover wall of liquid level centre plane product fluid density institute value.This utility model has further reduced the methane-generating pit cost, increases the biogas storage capacity, does not fully stir fermented liquid but, and is difficult to improve the biogas output capacity.
Therefore mainly there is following problem in existing hydraulic type biomass pool:
1, interior scum silica frost crusts easily, is difficult to fragmentation again, and the gas efficiency of fermentation raw material is not high.
2, fermentation vat is embedded in undergroundly, does not have special discharging equipment, and big discharging work is difficulty relatively.
Only a few people has carried out exempting from the hydraulic pressure transformation between water inlet to methane-generating pit on the basis that keeps hydraulic type biomass pool basic structure.
[patent No.] CN201020185590.7 for example, [title] circulating biogas generator, [notification number]: CN201746545U, a kind of circulating biogas generator is disclosed, comprise opening for feed, discharge port, fermentation vat, devulcanizer, biogas burner and airway, fermentation vat is embedded in underground, waste material enters fermentation vat from opening for feed, the fermentation vat bottom is equipped with submersible pump, the rising pipe of submersible pump is communicated with surface-based fermentor tank, the fermentor tank bottom pipe is provided with valve and is communicated with discharge port, the pipeline that install at the fermentor tank top is communicated to the fermentation vat top, be drawn into fermentor tank from fermentation vat through submersible pump through the liquid after the initial fermentation, fermentor tank is through the solar light irradiation heating, and temperature raises in jar, fermented liquid gas producing efficiency in the fermentor tank improves rapidly, but the high-temperature gas of this biogas generator can only be on the fermented liquid surface with fermented liquid generation heat exchange, and factor of created gase is still not high, remains further to be improved.
Therefore be necessary to invent a kind of methane-generating pit of exempting from hydraulic pressure, both guaranteed the cheapness of original hydraulic type biomass pool, firmly, advantage such as inlet amount is big, can improve gas efficiency and load again.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming that traditional hydraulic type biomass pool gas output capacity is low, discharging is difficult, and a kind of air pressure type methane-generating pit of exempting from the band circulation agitator of hydraulic pressure is provided.
The utility model air pressure type methane-generating pit pond body divides upper and lower two portions, stores the collection chamber setting of biogas on the ground, is provided with the marsh gas purifying device, and collection chamber is communicated with fermentation vat downwards, upwards is communicated with the biogas burner; Fermentation vat is embedded in underground and communicates with each other with the feed-pipe that is arranged on its both sides, discharge room, and discharge room is provided with settling tank, and the circulation agitator is set in the methane-generating pit, and the carrier pipe of agitator is communicated with fermentation vat, collection chamber, feed-pipe, discharge room respectively; Collection chamber also serves as the heating unit of methane-generating pit, is thermal source with sun power, and the gas after being heated in the collection chamber directly contacts with fermented liquid by pneumatic tube, and the marsh gas purifying device is installed in the top of collection chamber.
Described circulation agitator comprises submersible pump and carrier pipe, and submersible pump is installed at the bottom of the fermentation vat, and submersible pump is communicated to the opening for feed of collection chamber middle and upper part, feed-pipe and the settling tank of discharge room respectively by carrier pipe; The intersection that carrier pipe is communicated with collection chamber, feed-pipe, discharge room all is respectively equipped with valve.
Described submersible pump can be installed and removed repeatedly.It is 200 with specific heat capacity that described collection chamber is one---the gas collection that 500J/kg ℃ metallic substance is made, long-pending heat jar.The collection chamber bottom is connected with fermentation vat by two pipelines, and one is the carrier pipe that only touches the fermentation vat top, is provided with valve in the pipe, and another is to put in the following pneumatic tube of fermentation liquid level.In the pneumatic tube that collection chamber and burner are connected voltate regulator is housed.
Though the utility model is to form in the transformation of the basis of hydraulic type biomass pool, it no longer needs high hydraulic pressure post at feed-pipe, has not been hydraulic type biomass pool.Overcome the shortcoming that traditional hydraulic type biomass pool gas output capacity is low, discharging is difficult, obtain following progress:
(1) by the guiding by carrier pipe, the fermented liquid agitator at the bottom of the fermentation vat is transferred toward collection chamber, feed-pipe, returns the top of fermentation vat at last, realizes that fermented liquid stirs, and crust is broken, improves the gas output capacity of fermented liquid greatly.
(2) fermented liquid of conveying discharge room, the settling tank short stay, waste material is deposited on the settling tank place, reaches the purpose of light discharging.
(3) gas in the collection chamber can be under the effect of collection chamber, absorbed sun power indirectly and the temperature rising, become high-temperature gas, when gases are heated, they expand in the collection chamber simultaneously, a large amount of high-temperature gases enter the fermented liquid the inside along pneumatic tube, continue and fermented liquid generation heat exchange, play the effect of heating fermented liquid, make the fermented liquid temperature be improved, the raising of temperature further promotes the gas output capacity of fermented liquid.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the structural representation of the air pressure type methane-generating pit of band circulation agitator of the present utility model.
Fig. 2 is the fermented liquid flow graph of the air pressure type methane-generating pit whipping process of band circulation agitator of the present utility model.
Among the figure, 1-submersible pump; 2-fermentation vat; 3-fermentation liquid level; 4-discharge room; 5-feed-pipe; 6-carrier pipe; 7-valve; 8-settling tank; 9-collection chamber; 10-burner; 11-voltate regulator; 12-pneumatic tube; 13-marsh gas purifying device.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Referring to shown in Figure 1, it is the structural representation of air pressure type methane-generating pit of the band circulation agitator of utility model.
The air pressure type methane-generating pit of band circulation agitator of the present utility model, the pond body divides upper and lower two portions, and the collection chamber 9 of storing biogas arranges on the ground, is provided with marsh gas purifying device 13, and collection chamber is communicated with fermentation vat 2 downwards, upwards is communicated with biogas burner 10; Fermentation vat 2 is embedded in underground and communicates with each other with the feed-pipe 5 that is arranged on its both sides, discharge room 4, and discharge room is provided with settling tank 8, and the circulation agitator is set in the methane-generating pit.
The circulation agitator comprises submersible pump 1 and carrier pipe 6, and submersible pump is installed under the fermentation vat 2, and submersible pump is communicated to the opening for feed of collection chamber 9 middle and upper parts, feed-pipe 5 and the settling tank of discharge room 4 respectively by carrier pipe 6; The intersection that carrier pipe is communicated with collection chamber, feed-pipe, discharge room all is respectively equipped with valve 7.Submersible pump 1 can be installed and removed repeatedly, can change the position of submersible pump at the bottom of fermentation vat as required.Collection chamber 9 is gas collection, the long-pending heat jar made with steel plate.The collection chamber bottom is connected with fermentation vat by two pipelines, and one is the carrier pipe 6 that only touches fermentation vat 2 tops, is provided with valve in the pipe; Another is to put in the pneumatic tube 12 of fermentation liquid level below 3.Marsh gas purifying device 13 is the refining plants that can remove carbonic acid gas and hydrogen sulfide in the biogas, is installed in the top of collection chamber.In the pneumatic tube 12 that collection chamber and burner are connected voltate regulator 11 is housed.
When methane tank gas production, close the valve everywhere 7 that communicates with collection chamber 9, at this moment the collection chamber of methane-generating pit is in air-tight state, the biogas that produces enters collection chamber by the pneumatic tube 12 of collection chamber bottom, produced simultaneously biogas can produce pressure to the fermentation liquid level, and the fermented liquid of certain volume is pressed into discharge room 4 and feed-pipe 5 from pneumatic tube 12, and the liquid level of pneumatic tube 12 descends, liquid level between charging and discharging rises, and it is poor to form the U-shaped liquid level.Along with the increase of gas production rate, the liquid level difference continues to increase, and U-shaped liquid level difference also strengthens thereupon.
Gas in the collection chamber has absorbed sun power and the temperature rising indirectly, becomes high-temperature gas, has contained lot of energy, has improved the chemically reactive of hydrogen sulfide in methane and carbonic acid gas, makes it be more prone to be removed; When gases are heated, they expand in the collection chamber simultaneously, and a large amount of high-temperature gases enter the fermented liquid the inside along pneumatic tube, continue and fermented liquid generation heat exchange, play the effect of heating fermented liquid; When opening the burner switch and use gas, biogas at first purifies through refining plant 13, removes hydrogen sulfide and carbonic acid gas, is transported to burner 10 again and uses.
Along with the burned consumption of biogas in the collection chamber 9, room pressure descends, fermented liquid between turnover, material passes back into fermentation vat 2, its liquid level descends, and the liquid level in the pneumatic tube 12 rises, and it is poor that at this moment U-shaped liquid level difference becomes the convex liquid level, the final disappearance, show that the biogas in the collection chamber is exhausted substantially, but because pneumatic tube 12 liquid levels rise, the air pressure in the collection chamber still is not less than a normal atmosphere; At this time just can start the circulation agitator, after stirring, fermented liquid aerogenesis speed promotes significantly, and the biogas in the fermentation vat increases, and biogas moves to air collector again.
Referring to Fig. 2, it is the fermented liquid flow graph of the air pressure type methane-generating pit whipping process of band circulation agitator of the present utility model.
Open the whole valves in the carrier pipe, start submersible pump 1 sedimentary fermentation liquid is carried toward collection chamber 9, feed-pipe 5, specific regions such as discharge room 4, sedimentary fermentation liquid is divided into three directions and moves:
1, along the carrier pipe 6 to the left side, falls into feed-pipe 5, reach the fermented liquid surface.
2, along the carrier pipe to the right, fall into the settling tank 8 of discharge room, the settling tank short stay, along the discharge room fermented liquid surface that falls back, and waste material wherein waits for clearance under the middle deposition of settling tank.
3. upwards enter collection chamber 9, mix with the gas of relatively-high temperature indoor, finish heat exchange, again through the carrier pipe of the collection chamber fermented liquid surface that falls back, improved the temperature of fermented liquid indirectly, more be conducive to fermented liquid output methane.
Which bar approach what no matter sedimentary fermentation liquid was walked is, the crust in the fermented liquid all can be broken up in flow process, dropping process, thereby accelerates the aerogenesis speed of fermented liquid.Three moving process of sedimentary fermentation liquid complement each other, and have realized the stirring of fermented liquid, the aerogenesis environment that intensification has improved fermented liquid, greatly improve the gas output capacity, and waste material is left on settling tank and is conducive to discharging more.The utility model overcomes the shortcoming that traditional hydraulic type biomass pool gas output capacity is low, discharging is difficult, has obtained significant technical progress.
The above is preferred implementation of the present utility model; should be pointed out that concerning those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (6)
1. air pressure type methane-generating pit with the circulation agitator, the pond body divides upper and lower two portions, and the collection chamber (9) of storing biogas arranges on the ground, is provided with marsh gas purifying device (13), and collection chamber is communicated with fermentation vat (2) downwards, upwards is communicated with biogas burner (10); Fermentation vat (2) is embedded in underground and communicates with each other with the feed-pipe that is arranged on its both sides (5), discharge room (4), discharge room is provided with settling tank (8), it is characterized in that: the circulation agitator is set in the methane-generating pit, and the carrier pipe of agitator (6) is communicated with fermentation vat (2), collection chamber (9), feed-pipe (5), discharge room (4) respectively; Collection chamber also serves as the heating unit of methane-generating pit, is thermal source with sun power, and the gas after being heated in the collection chamber directly contacts with fermented liquid by pneumatic tube (12), and marsh gas purifying device (13) is installed in the top of collection chamber.
2. the air pressure type methane-generating pit of band circulation agitator according to claim 1, it is characterized in that: described circulation agitator comprises submersible pump (1) and carrier pipe (6), submersible pump is installed in fermentation vat (2) end, and submersible pump is communicated to the opening for feed of collection chamber (9) middle and upper part, feed-pipe (5) and the settling tank of discharge room (4) respectively by carrier pipe (6); The intersection that carrier pipe is communicated with collection chamber, feed-pipe, discharge room all is respectively equipped with valve (7).
3. the air pressure type methane-generating pit of band circulation agitator according to claim 2, it is characterized in that: described submersible pump (1) can be installed and removed repeatedly.
4. the air pressure type methane-generating pit of band band circulation agitator according to claim 1, it is characterized in that: it is 200 with specific heat capacity that described collection chamber (9) is one---the gas collection that 500J/kg ℃ metallic substance is made, long-pending heat jar.
5. according to the air pressure type methane-generating pit of claim 1 or 4 described band circulation agitators, it is characterized in that: the collection chamber bottom is connected with fermentation vat by two pipelines, article one, be the carrier pipe (6) that only touches fermentation vat (2) top, be provided with valve in the pipe, another is to put in the following pneumatic tube (12) of fermentation liquid level (3).
6. the air pressure type methane-generating pit of band circulation agitator according to claim 1 is characterized in that: voltate regulator (11) is housed in the pneumatic tube that collection chamber and burner are connected (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201265477U CN203212569U (en) | 2013-03-20 | 2013-03-20 | Air pressure type biogas digester with circulating stirrer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013201265477U CN203212569U (en) | 2013-03-20 | 2013-03-20 | Air pressure type biogas digester with circulating stirrer |
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| CN203212569U true CN203212569U (en) | 2013-09-25 |
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| CN2013201265477U Expired - Fee Related CN203212569U (en) | 2013-03-20 | 2013-03-20 | Air pressure type biogas digester with circulating stirrer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122309A (en) * | 2013-03-20 | 2013-05-29 | 广西壮族自治区环境保护科学研究院 | Pneumatic methane tank with circular agitator |
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2013
- 2013-03-20 CN CN2013201265477U patent/CN203212569U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122309A (en) * | 2013-03-20 | 2013-05-29 | 广西壮族自治区环境保护科学研究院 | Pneumatic methane tank with circular agitator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20170320 |