CN104087504B - A kind of methane holder and comprise the methane-generating pit of this gas storage holder - Google Patents
A kind of methane holder and comprise the methane-generating pit of this gas storage holder Download PDFInfo
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- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a kind of methane holder and comprise the methane-generating pit of this gas storage holder, methane holder comprises sludge sump and the gas storage holder being communicated with sludge sump, the bottom of gas storage holder is downward-sloping to the connectivity part direction of sludge sump and gas storage holder, and extending to the sidewall at sludge sump water outlet place, the cross section of the bottom of gas storage holder is indent semisphere; The methane-generating pit comprising this gas storage holder comprises main pond and water pressure house, and the side in main pond is provided with into excrement mouth, is provided with feces outlet between fermentation vat and water pressure house, and this feces outlet is positioned on another sidewall of fermentation vat; The upper edge entering excrement mouth is positioned on same level line with the top of feces outlet; The bottom of fermentation vat starts to water pressure house direction downward-sloping from entering excrement mouth place sidewall, and extends to the sidewall at water pressure house overflow port place; Being provided with cross section at the bottom of the pond of fermentation vat is indent hemispheric excrement slag sluice way, its object is to provide that a kind of structure is simple, the low gas storage holder with long service life of cost, and a kind of biogas pressure is constant, residue-discharge convenience, not easily crust and the large methane-generating pit of gas production rate.
Description
Technical field
The invention belongs to technical field of methane, be specifically related to a kind of methane holder and comprise the methane-generating pit of this gas storage holder.
Background technology
Along with growth in the living standard, the problem of closing energy-saving is had also to attract attention gradually.In recent years, popularize gradually at the most area biogas in China rural area, and obtain the accreditation of people.At present, country has formulated corresponding standard with regard to the construction of rural area methane-generating pit used, hydraulic type biomass pool is that China promotes the maximum domestic methane tank of quantity, structurally, generally include the methane-generating pit of spherical ledge and the methane-generating pit of square ledge, methane-generating pit generally includes main pond and water pressure house, main pond is communicated with water pressure house, and main pond is divided into air storage chamber and sweathouse, fermentation raw material and water are when sweathouse produces biogas by fermentation, biogas is concentrated in air storage chamber, along with increasing of biogas, pressure in the body of pond continues to increase, biogas compressing fermented feed liquid enters water pressure house, when using gas, the biogas of air storage chamber is released, and the feed liquid of water pressure house enters sweathouse, and so " Pneumatic water, hydraulic pressure gas " carries out repeatedly, thus reaches normal supply and the use of biogas.
Main component in biogas is methane, biogas by about 50% ~ 80% methane, the carbonic acid gas of 20% ~ 40%, comprise the gas compositions such as the hydrogen sulfide of about 1% ~ 3% in addition, because hydrogen sulfide is toxic gas, in daily life uses, need by the hydrogen sulfide removing in biogas, namely carry out desulfurization process, in addition, carbonic acid gas is also needed to remove, improve the purity of methane, can normally use, the equipment of existing removing hydrogen sulfide in methane has thionizer and devulcanizer, devulcanizer in a reservoir ferric oxide particles is housed, ferric oxide particles is utilized to carry out desulfurization process to the hydrogen sulfide in biogas, but use thionizer or devulcanizer, still there is the cost of its device own higher, the deficiencies such as mounting structure is complicated.
In addition, the biogas formed after reaction fermentation in main pond can be concentrated and be transported in methane holder, unnecessary biogas storage can not only get up by methane holder, free from environmental pollution, even if when winter, methane gas producing amount was lower, still the large user demand of people's gas consumption can be met, in case of need, also save fuel energy, and existing gas storage holder adopts steel cabinet and membrane type gas storage holder usually, steel cabinet is very heavily unfavorable for transport and installs, and pure steel structure is more easily got rusty rotten, life-span is shorter, anticorrosion large with inspection workload, it is high mainly to there is investment in membrane type gas storage holder, pressure is little, power consumption of pressurizeing is needed in use procedure, working cost is high, the problem that additional equipment is many.In addition, steel cabinet and membrane type gas storage holder also need to coordinate desulfurizer to use, the biogas of filtered can contain 50% ~ 80% methane (CH4), 20% ~ 40% carbonic acid gas (CO2), 0% ~ 5% nitrogen (N2), the hydrogen (H2) being less than 1%, the gas such as oxygen (O2) and 0.1% ~ 3% hydrogen sulfide (H2S) that is less than 0.4%, hydrogen sulfide is toxic gas, need be removed, guarantee safety, and carbonic acid gas proportion in biogas is larger, in order to improve the purity of methane, also need to be removed, ensure that the combustion energy of biogas is sufficient.
Summary of the invention
Object one of the present invention is to provide that a kind of structure is simple, the low gas storage holder with long service life of cost, and for the above problem that existing methane-generating pit occurs, object two of the present invention is to provide that a kind of biogas pressure is constant, residue-discharge convenience, not easily crust and the large methane-generating pit comprising this gas storage holder of gas production rate.
Object one of the present invention is achieved by the following technical solution: a kind of methane holder, comprise gas storage holder and sludge sump, the top of gas storage holder is provided with pneumatic tube, one sidewall of described sludge sump is provided with water outlet, another sidewall of described sludge sump is communicated with gas storage holder, the bottom of described gas storage holder is downward-sloping to the connectivity part direction of sludge sump and gas storage holder, and extends to the sidewall at sludge sump water outlet place; The cross section of the bottom of described gas storage holder is indent semisphere; Described gas storage holder entirety is in up-narrow and down-wide trapezoidal, described pneumatic tube is positioned at trapezoidal top, described pneumatic tube is provided with escape valve, and the bottom of described gas storage holder is provided with inlet pipe and water feed apparatus, is provided with water-freeing arrangement in the bottom near sludge sump water outlet place sidewall.
Preferably, the angle of inclination of the bottom surface of described gas storage holder is between 30 degree to 35 degree, when the angle of inclination of the bottom surface of gas storage holder is less than 30 degree, be unfavorable for the flowing of upper mud and sediment bottom gas storage holder, and when angle is greater than 35 degree, then can reduce the spatial content of gas storage holder, also increase the difficulty of processing and manufacturing, the angle of inclination of the bottom surface of gas storage holder is between 30 degree to 35 degree, has both been conducive to the discharge of pool bottom sludge, and has facilitated formwork again.
Preferably, the tube head of described pneumatic tube is provided with sponge, and sponge can absorb the water vapour in biogas, blocks pneumatic tube after preventing water vapor condensation.
Object two of the present invention is to provide that a kind of biogas pressure is constant, residue-discharge convenience, not easily crust and the large methane-generating pit comprising this gas storage holder of gas production rate.
Object two of the present invention is achieved by the following technical solution: comprise main pond and water pressure house, and described main pond is made up of air storage chamber and fermentation vat, and the top of air storage chamber is provided with airway, and the side in described main pond is provided with into excrement mouth, and opposite side communicates with water pressure house; Described water pressure house is provided with overflow port, it is characterized in that: the described excrement mouth that enters is positioned on the sidewall of fermentation vat; Be provided with feces outlet between described fermentation vat and water pressure house, this feces outlet is positioned on another sidewall of fermentation vat; Described enter the upper edge of excrement mouth be positioned on same level line with the top of feces outlet; The bottom of described fermentation vat starts to water pressure house direction downward-sloping from entering excrement mouth place sidewall, and extends to the sidewall at water pressure house overflow port place; Being provided with cross section at the bottom of the pond of described fermentation vat is indent hemispheric excrement slag sluice way; Described air storage chamber cross section is up-narrow and down-wide trapezoidal, and the bottom of air storage chamber sidewall is located on the upper edge entering excrement mouth, and described airway is positioned at trapezoidal top, and described airway is provided with escape valve.
Described methane-generating pit also comprises gas storage holder and sludge sump, the top of gas storage holder is provided with pneumatic tube, one sidewall of described sludge sump is provided with water outlet, another sidewall of described sludge sump is communicated with gas storage holder, the bottom of described gas storage holder is downward-sloping to the connectivity part direction of sludge sump and gas storage holder, and extends to the sidewall at sludge sump water outlet place; The cross section of the bottom of described gas storage holder is indent semisphere; Described gas storage holder entirety is in up-narrow and down-wide trapezoidal, and described pneumatic tube is located at trapezoidal top, and described pneumatic tube is provided with escape valve, is provided with the inlet pipe connecting described airway, and is tightly connected between airway and inlet pipe bottom described gas storage holder; The bottom of gas storage holder is also provided with water feed apparatus, and water-freeing arrangement.
Preferably, described air storage chamber is also provided with main pond safety interlock, and described main pond safety interlock are made up of the insurance hole and the relief cover insured on hole that are positioned at Chi Ding, is provided with the sealing edge for sealing at the bottom of relief cover lid around described insurance hole.When building the main pond of fermentation vat, can offer the through hole of a roughly 25-50 centimetre at the top in main pond, through hole is added a cover a sealing cover, the Chi Ding in sealing lid and main pond is sealed by cement etc., prevents biogas from leaking.When main pond pressure is excessive, reach main pond when cannot bear critical, due to insurance, hole place is more insecure compared to main pond, therefore is backed down by air pressure at first and carry out pressure release, thus ensures the safety of pond, main pond body; Only need repair insurance hole and relief cover during reparation, rehabilitation cost is low, and efficiency is high.
Preferably, the angle of inclination of the bottom surface of described fermentation vat is between 30 degree to 35 degree, when the angle of inclination of the bottom surface of fermentation vat is less than 30 degree, be unfavorable for the landing of upper natural pond slag bottom fermentation vat, and when angle is greater than 35 degree, then can reduce the spatial content in main pond, also increase the difficulty of processing and manufacturing, the angle of inclination of the bottom surface of fermentation vat is between 30 degree to 35 degree, is both conducive to deslagging, and facilitates formwork again.Described air storage chamber end face can be 45 centimetres, 50 centimetres or 60 centimetres higher than water pressure house end face distance, meets the space size in domestic methane tank air storage chamber, also avoids main pond to be filled up by liquid dung and fermentation materials, ensure that the security in main pond.The distance of water pressure house and air storage chamber is too high, is unfavorable for the overflow of liquid manure, main pond internal pressure can be caused excessive, affect the safety in main pond; The distance of water pressure house and air storage chamber is too low, and liquid manure meeting overflow is too much, is unfavorable for the abundant fermentation of liquid manure, can affects the gas production rate of liquid manure.
Preferably, it also comprises detritus pool, and described detritus pool enters excrement mouth by feeding-passage and main pond and communicates; The bottom of described detritus pool is the semisphere of indent, described bottom is provided with ball valve, the first primary deposition filtration in detritus pool of liquid dung and fermentation materials, foreign material in fermentation materials such as stone etc. can be deposited on the lower bottom detritus pool, and timing by ball valve by discharges such as foreign material, to ensure that the fermented liquid in fermentation vat does not contain too much foreign material, improve the purity of fermentation materials, and then improve the gas production rate of methane-generating pit.Bottom described detritus pool higher than enter excrement mouth on along 20 centimetres to 30 centimetres, fermentation materials gives main pond feed from top to bottom by detritus pool, be beneficial to the patency of feed, described feeding-passage is wide at the top and narrow at the bottom tubaeform, feeding-passage mouth on detritus pool sidewall is positioned at the middle part of detritus pool sidewall, floating matter in detritus pool is not easily diffused out from feeding-passage mouth, and the settling at the bottom of pond also not easily blocks feeding-passage mouth.
Preferably, described main pond sidewall comprises brick structure matrix successively, first concrete layer, thermal insulation layer, second concrete layer, preservative coat, thermal insulation layer can play the effect of insulation to main pond, during the broiling summer, have employed the fermentation vat of described thermal insulation layer, temperature in fermentation vat compares the fermentation vat not adopting thermal insulation layer, medial temperature can be high 5 ~ 8 degree, its temperature can reach about 45 degree, be more conducive to the fermentation of fermentation materials, improve its gas production rate, even if in colder winter, thermal insulation layer also can make fermentation vat remain on about 25 degree, fermentation materials also can normal fermentation, guarantee leavening temperature, increase methane tank gas production efficiency, thus normal air feed can be guaranteed, preservative coat can play rot-resistant effect to thermal insulation layer.
Preferably, described thermal insulation layer is made up of plastic film layers, plastics film is stopping property and good heat preservation performance not only, and smooth finish is strong, be conducive to the moulding of mixed earth, described preservative coat is formed by water glass and cement mixing, and water glass can not only anti-acid corrosion, and can play the effect of mixed soil bonding and reinforcement.
Preferably, it also comprises a feace storing pool, and the overflow port of described water pressure house communicates with feace storing pool, when liquid dung too much inside water pressure house diffuses out from overflow port, can flow in feace storing pool, and the liquid dung in feace storing pool can be used for peasant household and plants vegetables, is a farmer, feeds fish etc.
The principle of work of the technical program is such: fermentation materials is by fermentation vat sidewall enters the charging of excrement mouth, because the upper edge entering excrement mouth is positioned on same level line with the top of feces outlet, meeting feces outlet discharge smoothly under prerequisite, as long as liquid level in fermentation vat keeps mutually concordant with the sea line on feces outlet top with the upper edge entering excrement mouth or when exceeding this sea line, gas in air storage chamber would not be missed from feces outlet, ensure that the constant of air storage chamber biogas pressure in main pond, meet the service requirements that people's use gas is stable; Because the bottom of fermentation vat starts to water pressure house direction downward-sloping from entering excrement mouth place sidewall, and extend to the sidewall at water pressure house overflow port place, material in fermentation vat is after by fermentation, the natural pond slag formed can pass through feces outlet along the bottom of fermentation vat from entering excrement mouth, finally flow to the bottom section of water pressure house overflow port place sidewall, when the pressure of air storage chamber increases, liquid level in fermentation vat declines, liquid level in water pressure house rises, liquid manure in main pond is flowed out by overflow port, ensures the stability of air pressure in main pond.
Due at the bottom of the pond in main pond for being obliquely installed, and be provided with excrement slag sluice way at the bottom of pond, the excrement slag in main pond can flow to water pressure house along sluice way, when needs take out excrement slag, only water pump need be used to enter water pressure house excrement slag can be extracted out, without the need to opening main pond, enter in main pond and carrying out artificial deslagging; This kind of structure does not stay dead angle, does not have the phenomenon that excrement slag cannot be discharged; And fermented liquid can form circulation under the suction of water pump, not easily crust in its surface; Secondly, due at the bottom of the pond in main pond for being obliquely installed, relatively existing methane-generating pit, the amount of manure in fermentation vat is more, and the gas production rate of fermentation materials also can correspondingly promote.Air storage chamber entirety, in up-narrow and down-wide trapezoidal, be convenient to biogas and be gathered in top, pond along gas storage locular wall, is convenient to ensure supply gas pressure.The main pond of methane-generating pit can be built in underground, can colony house be built near the flat-top of air storage chamber, facilitate the process of colony house liquid dung, also provide direct fermentation raw material to methane-generating pit, described airway is positioned at trapezoidal top, airway is provided with escape valve, and airway seals with main pond and is communicated with, when the pressure in main pond is excessive, escape valve is opened, manually can reduce main pond internal pressure, thus also can play the effect of pressure in the main pond of balance, guarantee the safety in main pond.
Airway on main pond connects the inlet pipe of gas storage holder, the airway of the biogas produced in main pond through air storage chamber top leads to gas storage holder, biogas enters from the inlet pipe bottom gas storage holder, and gas storage holder is built with water, water can remove some scum silica frost in biogas and acidic substance (such as: hydrosulphuric acid, lipid acid etc.), again by the pneumatic tube at gas storage holder top, be transported to the kitchen range top of resident family, for resident family provides clean, the fuel energy of safety, unnecessary biogas storage can also get up by gas storage holder, free from environmental pollution, even if when winter, methane gas producing amount was little, still the large user demand of people's gas consumption can be met, in case of need, the bottom of gas storage holder is downward-sloping to the connectivity part direction of sludge sump and gas storage holder, and extend to the sidewall at sludge sump water outlet place, when the water in gas storage holder is after purifying for a long time, water is by acidifying, produce a large amount of mud and sediment, at this moment the water of gas storage holder is needed to change, the bottom of gas storage holder is the slope tilted, be beneficial to mud and sediment focuses in sludge sump, water-freeing arrangement is provided with in the bottom near sludge sump water outlet place sidewall, water-freeing arrangement can by sewage, mud and sediment are discharged, the bottom of described gas storage holder is provided with water feed apparatus, water feed apparatus can carry out clear water replacing, the cross section of the bottom of described gas storage holder is indent semisphere, make bottom gas storage holder with pool wall in conjunction with time, do not produce dead angle, prevent mud and sediment from piling up at dead angle place, be unfavorable for getting rid of, in the bottom near sludge sump water outlet place sidewall, water-freeing arrangement is set, mud at the bottom of pond and sediment are concentrated in the lower bottom sludge sump, be beneficial to water-freeing arrangement and mud and sediment are concentrated discharge.
The present invention is relative to the beneficial effect of prior art: the main component in biogas is methane, biogas by about 50% ~ 80% methane, the carbonic acid gas of 20% ~ 40%, comprise the gas compositions such as the hydrogen sulfide of about 1% ~ 3% in addition, carbonic acid gas is water-soluble, after water filtration, the purity of methane can be improved; Also contain the gases such as hydrogen sulfide in biogas in addition, methane purity can be improved further by water filtration.Methane holder adopts the bar construction of mixed earth, its simple structure, long service life, and unnecessary biogas storage can get up by gas storage holder, free from environmental pollution, and when winter, methane gas producing amount was little, still the large user demand of people's gas consumption can be met, in case of need, water in gas storage holder can remove some acidic substance such as scum silica frost and hydrosulphuric acid in biogas, and the mud that formed after acidifying of the water in gas storage holder and sediment are discharged also very convenient in sludge sump, for resident family provides clean, safe fuel energy; In addition, in the methane-generating pit including this methane holder, detritus pool can carry out primary deposition filtration to fermentation materials such as liquid dungs, improves the fermentation efficiency of fermentation materials; Natural pond slag in main pond in fermentation vat is easily slipped to the bottom section of water pressure house overflow port place sidewall, when the pressure increase of air storage chamber, and gets rid of unnecessary liquid manure by overflow port, ensures the constant pressure in main pond; Pond slanted floor and have sluice way to facilitate deslagging, avoid the potential safety hazard of artificial slagging-off, and without dead angle between indent semisphere sluice way and hydraulic pressure partition, excrement slag can not be stopped over, and ensures to have enough effective fermented products in main pond; Adopt safety locking motion, the safety in main pond can be ensured further, save the cost repairing main pond, improve remediation efficiency; Main pond arranges thermal insulation layer when building in the body wall of pond effectively can improve leavening temperature, especially time in the winter time, also the leavening temperature of fermentation vat can be ensured, thus guarantee gas production rate, liquid dung in feace storing pool can be used for peasant household and plants vegetables, is a farmer, feeds fish etc., bring fertilizer to peasant household, improve ecotope.
Accompanying drawing explanation
Fig. 1 is the structural representation of methane holder in the embodiment of the present invention;
Fig. 2 is the left view of methane holder in the embodiment of the present invention;
Fig. 3 is the structural representation of the methane-generating pit comprising this methane holder in the embodiment of the present invention;
Fig. 4 is the left view of detritus pool in the embodiment of the present invention;
Fig. 5 is the left view in main pond in the embodiment of the present invention;
Fig. 6 is the left view of feces outlet in the embodiment of the present invention;
Fig. 7 is the partial enlarged drawing of main pond safety interlock in the embodiment of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
As shown in Figure 1 and Figure 2, a kind of methane holder, comprise gas storage holder 18 and sludge sump 19, the top of gas storage holder 18 is provided with pneumatic tube 20, one sidewall of sludge sump 19 is provided with water outlet 21, another sidewall of sludge sump 19 is communicated with gas storage holder 18, and the bottom of gas storage holder 18 is downward-sloping with the connectivity part direction of gas storage holder 18 to sludge sump 19, and extends to the sidewall at sludge sump 19 water outlet 21 place; The cross section of the bottom of gas storage holder 18 is indent semisphere; Gas storage holder 18 entirety is in up-narrow and down-wide trapezoidal, and pneumatic tube 20 is located at trapezoidal top, and pneumatic tube 20 is provided with escape valve 22; The angle of inclination of the bottom surface of gas storage holder 18 is 30 degree, and the bottom of gas storage holder 18 is provided with inlet pipe 23 and water feed apparatus 24, and be provided with water-freeing arrangement 25 in the bottom near sludge sump 19 water outlet 21 place sidewall, the tube head of pneumatic tube 20 is provided with sponge 26.
The angle of inclination of the bottom surface of gas storage holder 18 is that between 30 degree to 35 degree, particular case comprises: the angle of inclination of the bottom surface of gas storage holder 18 is 30 degree, 32 degree, 35 degree, and the present embodiment is mainly 30 degree with the angle of inclination of the bottom surface of gas storage holder 18 and is described in detail.
The angle of inclination of the bottom surface of gas storage holder 18 is between 30 degree to 35 degree, 30 degree are selected in the present embodiment, when the angle of inclination of the bottom surface of gas storage holder 18 is less than 30 degree, be unfavorable for the flowing of upper mud and sediment bottom gas storage holder 18, and when angle is greater than 35 degree, then can reduce the spatial content of gas storage holder 18, also increase the difficulty of processing and manufacturing, the angle of inclination of the bottom surface of gas storage holder 18 is between 30 degree to 35 degree, has both been conducive to the discharge of pool bottom sludge, and has facilitated formwork again.
The bottom of gas storage holder 18 is provided with inlet pipe 23 and water feed apparatus 24, mud and sediment are concentrated in the lower bottom sludge sump 19, water-freeing arrangement 25 is set in the bottom near sludge sump 19 water outlet 21 place sidewall, is beneficial to water-freeing arrangement 25 and mud and sediment are concentrated discharge.
The tube head of pneumatic tube 20 is provided with sponge 26, and sponge 26 can absorb the water vapour in biogas, blocks pneumatic tube 20 after preventing water vapor condensation.
As shown in Fig. 3, Fig. 6, a kind of methane-generating pit comprising methane holder, comprises main pond and water pressure house 1, and main pond is made up of air storage chamber 2 and fermentation vat 3, and the top of air storage chamber 2 is provided with airway 4, and the side in main pond is provided with into excrement mouth 5, and opposite side communicates with water pressure house 1; Water pressure house 1 is provided with overflow port 6, enters excrement mouth 5 and is positioned on the sidewall of fermentation vat 3; Be provided with feces outlet 7 between fermentation vat 3 and water pressure house 1, the height of feces outlet 7 is 1 meter, and the width of water pressure house 1 is 1.2 meters, and this feces outlet 7 is positioned on another sidewall of fermentation vat 3; The upper edge entering excrement mouth 5 is positioned on same level line with the top of feces outlet 7; The bottom of fermentation vat 3 starts to water pressure house 1 direction downward-sloping from entering excrement mouth 5 place sidewall, and extends to the sidewall at water pressure house 1 overflow port 6 place, and the angle of inclination of the bottom surface of fermentation vat 3 is 30 degree; It is indent hemispheric excrement slag sluice way that the bottom of fermentation vat 3 is provided with cross section; Air storage chamber 2 entirety is in up-narrow and down-wide trapezoidal, and air storage chamber 2 end face is higher than water pressure house 1 end face distance 50 centimetres, and the bottom of air storage chamber 2 sidewall is located on the upper edge entering excrement mouth 5, and airway 4 is positioned at trapezoidal top, and airway 4 is provided with escape valve 8.In addition, this methane-generating pit also comprises a feace storing pool 17, and the overflow port 6 of water pressure house 1 communicates with feace storing pool 17.
As shown in Figure 3, Figure 4, it also comprises detritus pool 9, and detritus pool 9 enters excrement mouth 5 by feeding-passage 10 and main pond and communicates; The bottom of detritus pool 9 is the semisphere of indent, and bottom is provided with ball valve 11, bottom detritus pool 9 higher than enter excrement mouth 5 on along 20 centimetres, feeding-passage 10 is in wide at the top and narrow at the bottom tubaeform, and the feeding-passage on detritus pool 9 sidewall 10 mouthfuls is positioned at the middle part of detritus pool 9 sidewall.
As shown in Figure 5, main pond sidewall comprises brick structure matrix 12, first concrete layer 13, plastic film layers 14, second concrete layer 15, preservative coat 16 by water glass and cement mixing successively.
As shown in Figure 7, air storage chamber 2 is also provided with main pond safety interlock 39, main pond safety interlock 39 are by the insurance hole 41 of the Chi Dingshang being positioned at air storage chamber 2 and the relief cover 40 of adding a cover outside insurance hole, are provided with for sealing sealing at the bottom of relief cover lid along 42 around described insurance hole 41.
The angle of inclination of the bottom surface of fermentation vat 3 is 30 degree to 35 degree, and particular case comprises: the angle of inclination of the bottom surface of fermentation vat 3 is 30 degree, 32 degree, 35 degree, and the present embodiment is mainly 30 degree with the angle of inclination of the bottom surface of fermentation vat 3 and is described in detail; Air storage chamber 2 end face can be 45 centimetres, 50 centimetres or 60 centimetres higher than water pressure house 1 end face distance, and the present embodiment is mainly described in detail higher than water pressure house 1 end face distance 50 centimetres with air storage chamber 2 end face; Bottom detritus pool 9 higher than enter excrement mouth 5 on along 20 centimetres to 30 centimetres, particular case comprises: bottom detritus pool 9 higher than enter excrement mouth 5 on along 20 centimetres, 25 centimetres, 30 centimetres, the present embodiment mainly with bottom detritus pool 9 higher than enter excrement mouth 5 on be described in detail along 20 centimetres; Relief cover 40 can comprise the column structure in inverted bowl structure and hollow, and the present embodiment is mainly described in detail in inverted bowl structure with relief cover 40.
Air storage chamber 2 is also provided with main pond safety interlock 39, main pond safety interlock 39 are positioned at the Chi Ding of air storage chamber 2, the pond of air storage chamber 2 is backed down and is provided with the insurance hole 41 that aperture is 30 centimetres, insurance periphery, hole 41 is provided with sealing along 42, sealing is provided with hollow relief cover 40 in edge, relief cover 40 and sealing are tightly connected between 42, relief cover 40 is in inverted bowl structure, when the feces outlet 7 in main pond blocks or escape valve 8 on airway 4 breaks down, gaseous tension in main pond can increase, now, insurance hole is easily destroyed compared to other structure comparison in main pond, therefore, it is possible to play the effect of pressure release.Gas in main pond can flow to insurance hole 41, and wash sealing open along the relief cover 40 in 42, play the effect reducing main pool gas pressure and guarantee main pool structure safety, again maintenance is carried out to main pond safety interlock 39 afterwards, and protect the integrity of main pool structure, avoid financial loss security incident occurring and reduces people, it is double insurance, certainly, when the feces outlet 7 in the main pond escape valve 8 do not occurred on blocking or airway 4 normally runs, main pond safety interlock 39 do not work, hollow relief cover 40 is covered in sealing along in 42, and employing is tightly connected, also the good airproof performance in main pond is guaranteed, relief cover 40 is in inverted bowl structure, when main pool gas pressure is excessive, be beneficial to gas upwards to flow, and wash sealing open along the relief cover 40 in 42.
The angle of inclination of the bottom surface of fermentation vat 3 is between 30 degree to 35 degree, 30 degree are selected in the present embodiment, when the angle of inclination of the bottom surface of fermentation vat 3 is less than 30 degree, be unfavorable for the landing of upper natural pond slag bottom fermentation vat 3, and when angle is greater than 35 degree, then can reduce the spatial content in main pond, also increase the difficulty of processing and manufacturing, the angle of inclination of the bottom surface of fermentation vat 3 is between 30 degree to 35 degree, is both conducive to deslagging, and facilitates formwork again.
Air storage chamber 2 end face can be 45 centimetres, 50 centimetres or 60 centimetres higher than water pressure house 1 end face distance, 50 centimetres are selected in the present embodiment, meet the space size in domestic methane tank air storage chamber 2, also main pond is avoided to be filled up by liquid dung and fermentation materials, ensure that the security in main pond, water pressure house 1 is too high with the distance of air storage chamber 2, is unfavorable for the overflow of liquid manure, main pond internal pressure can be caused excessive, affect the safety in main pond.Water pressure house 1 is too low with the distance of air storage chamber 2, and liquid manure meeting overflow is too much, is unfavorable for the abundant fermentation of liquid manure, can affects the gas production rate of liquid manure.
It also comprises detritus pool 9, and detritus pool 9 enters excrement mouth 5 by feeding-passage 10 and main pond and communicates; The bottom of detritus pool 9 is the semisphere of indent, bottom is provided with ball valve 11, the first primary deposition filtration in detritus pool 9 of liquid dung and fermentation materials, foreign material in fermentation materials such as stone etc. can be deposited on the lower bottom detritus pool 9, and timing passes through ball valve 11 by discharges such as foreign material, to ensure that the fermented liquid in fermentation vat 3 does not contain too much foreign material, improve the gas production rate of methane-generating pit;
Bottom detritus pool 9 higher than enter excrement mouth 5 on along 20 centimetres to 30 centimetres, fermentation materials gives main pond feed from top to bottom by detritus pool 9, be beneficial to the patency of feed, feeding-passage 10 is in wide at the top and narrow at the bottom tubaeform, feeding-passage on detritus pool 9 sidewall 10 mouthfuls is positioned at the middle part of detritus pool 9 sidewall, floating matter in detritus pool 9 is not easily diffused out from feeding-passage 10 mouthfuls, and the settling at the bottom of pond also not easily blocks feeding-passage 10 mouthfuls.
The height of feces outlet 7 is 1 meter, the width of water pressure house 1 is more than or equal to 1.2 meters, meet the service requirements of domestic methane tank, also the deslagging of feces outlet 7 is beneficial to, feces outlet 7 is too high, and unfermentable liquid manure can enter water pressure house 1 from feces outlet 7, affects gas production rate, feces outlet 7 is too low, excrement slag can be caused to get rid of unfavorable.
Main pond sidewall comprises brick structure matrix 12 successively, first concrete layer 13, plastic film layers 14, second concrete layer 15, by the preservative coat 16 of water glass and cement mixing, plastics film 14 is stopping property and good heat preservation performance not only, make in colder winter, fermentation materials also can normal fermentation, guarantee leavening temperature, increase methane tank gas production efficiency, and smooth finish is strong, be conducive to the moulding of mixed earth, by the preservative coat 16 of water glass and cement mixing, rot-resistant effect can be played to plastics film 14, water glass can not only anti-acid corrosion, and the effect of mixed soil bonding and reinforcement can be played.
At present, what China's methane-generating pit for farm household adopted substantially is normal temperature fermentation technique, and in main pond, temperature is generally between 10 ~ 25 degree, 25 degree time, feed liquid aerogenesis is effective, and during the broiling summer, the methane-generating pit of southern area, in main pond, temperature can reach between 30 ~ 45 degree, under the condition of 35 degree, feed liquid aerogenesis is effective, and in winter, when temperature in main pond is lower than 10 degree, microorganism enters dormancy, gas production rate is few, and biogas then cannot normally use at all.In addition, in main pond, the fluctuation of temperature is also very large on factor of created gase impact, and such as, in ferment at constant temperature process, the temperature of 1h fluctuates up and down can not more than 2 ~ 3 DEG C, and gradient of temperature 5 DEG C in the short period of time, gas production rate will obviously decline, and even can stop aerogenesis when fluctuating excessive.Visible, the temperature in main pond and heat retaining property are crucial, select fermentation vat 3 to be 10 cubic metres, air storage chamber 2 end face is higher than water pressure house 1 end face distance 45 centimetres, and the height of feces outlet 7 is 1 meter, the width of water pressure house 1 is family hydraulic type biomass pool S1 and S2 of 1.2 meters, wherein, S1 is the methane-generating pit of novel texture in the embodiment of the present invention, and S2 is the methane-generating pit under prior art, by test of many times gained, the gas production rate situation of S1 and S2 is as following table:
In addition, it also comprises a feace storing pool 17, and the overflow port 6 of water pressure house 1 communicates with feace storing pool 17, when liquid dung too much inside water pressure house 1 diffuses out from overflow port 6, can flow in feace storing pool 17, the liquid dung in feace storing pool 17 can be used for peasant household and plants vegetables, is a farmer, feeds fish etc.
In the present embodiment, fermentation materials is by fermentation vat 3 sidewall enters excrement mouth 5 charging, because the upper edge entering excrement mouth 5 is positioned on same level line with the top of feces outlet 7, meeting feces outlet 7 discharge smoothly under prerequisite, as long as liquid level in fermentation vat 3 keeps mutually concordant with the sea line on feces outlet 7 top with the lower edge entering excrement mouth 5 or when exceeding this sea line, gas in air storage chamber 2 would not be missed from feces outlet 7, ensure that the constant of air storage chamber 2 biogas pressure in main pond, and can constantly remain between 10 ~ 12MP, meet the service requirements that people's gas consumption is large, because the bottom of fermentation vat 3 starts to water pressure house 1 direction downward-sloping from entering excrement mouth 5 place sidewall, and extend to the sidewall at water pressure house 1 overflow port 6 place, the material that fermentation vat is 3 li is after by fermentation, the natural pond slag formed can along the bottom of fermentation vat 3 from entering excrement mouth 5 by feces outlet 7, finally flow to the bottom section of water pressure house 1 overflow port 6 place sidewall, when the pressure of air storage chamber 2 increases, liquid level in fermentation vat 3 declines, liquid level in water pressure house 1 rises, natural pond slag in the bottom section of overflow port 6 place sidewall is floated, and discharged by overflow port 6, in addition, also lift pump can be used at overflow port 6 place of water pressure house 1, rely on the suction of lift pump that the bottom of main pond and water pressure house 1 can be made to form the water circulation of taking advantage of a situation, it is easier to make, discharge in Zha Congzhu pond, natural pond easily, can not crust in fermented liquid surface, the cross section of the bottom of fermentation vat 3 is indent semisphere, make the bottom of fermentation vat 3 and pool wall in conjunction with time, do not produce dead angle, be convenient to fermented-excrement slag and be drawn out of.Air storage chamber 2 entirety, in up-narrow and down-wide trapezoidal, be convenient to biogas and assembled on air storage chamber 2 top, is conducive to ensureing supply gas pressure.The main pond of methane-generating pit can be built in underground, can colony house be built near the flat-top of air storage chamber 2, facilitate the process of colony house liquid dung, also provide direct fermentation raw material to methane-generating pit, airway 4 is positioned at trapezoidal top, airway 4 is provided with escape valve 8, and airway 4 is communicated with main pond, when the pressure in main pond is excessive, escape valve 8 is opened, in main pond, pressure reduces, thus also can play the effect of pressure in the main pond of balance, guarantees the safety in main pond.
Airway 4 on main pond connects the inlet pipe 23 of gas storage holder 18, the airway 4 of the biogas produced in main pond through air storage chamber 2 top leads to gas storage holder 18, biogas enters from the inlet pipe 23 bottom gas storage holder 18, and gas storage holder 18 is built with water, water can remove some scum silica frost in biogas and acidic substance (such as: hydrosulphuric acid, lipid acid etc.), again by the pneumatic tube 20 at gas storage holder 18 top, be transported to the kitchen range top of resident family, for resident family provides clean, the fuel energy of safety, unnecessary biogas storage can also get up by gas storage holder 18, free from environmental pollution, even if when winter, methane gas producing amount was little, still the large user demand of people's gas consumption can be met, in case of need, the bottom of gas storage holder 18 is downward-sloping with the connectivity part direction of gas storage holder 18 to sludge sump 19, and extend to the sidewall at sludge sump 19 water outlet 21 place, when the water of gas storage holder 18 li is after purifying for a long time, water is by acidifying, produce a large amount of mud and sediment, at this moment the water of gas storage holder 18 is needed to change, the bottom of gas storage holder 18 is the slope tilted, be beneficial to mud and sediment focuses in sludge sump 19, water-freeing arrangement 25 is provided with in the bottom near sludge sump 19 water outlet 21 place sidewall, water-freeing arrangement 25 can by sewage, mud and sediment are discharged, the bottom of gas storage holder 18 is provided with water feed apparatus 24, water feed apparatus 24 can carry out clear water replacing, the cross section of the bottom of gas storage holder 18 is indent semisphere, make bottom gas storage holder 18 with pool wall in conjunction with time, do not produce dead angle, prevent mud and sediment from piling up at dead angle place, be unfavorable for getting rid of.
Main component in biogas is methane, biogas by about 50% ~ 80% methane, the carbonic acid gas of 20% ~ 40%, comprise the gas compositions such as the hydrogen sulfide of about 1% ~ 3% in addition, carbonic acid gas is water-soluble, after water filtration, can improve the purity of methane; Also contain the gases such as hydrogen sulfide in biogas in addition, methane purity can be improved further by water filtration.Methane holder adopts the bar construction of mixed earth, its simple structure, long service life, and unnecessary biogas storage can get up by gas storage holder, free from environmental pollution, and when winter, methane gas producing amount was little, still the large user demand of people's gas consumption can be met, in case of need, water in gas storage holder can remove some acidic substance such as scum silica frost and hydrosulphuric acid in biogas, and the mud that formed after acidifying of the water in gas storage holder and sediment are discharged also very convenient in sludge sump, for resident family provides clean, safe fuel energy.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (8)
1. a methane holder, comprise gas storage holder and sludge sump, the top of gas storage holder is provided with pneumatic tube, one sidewall of described sludge sump is provided with water outlet, it is characterized in that: another sidewall of described sludge sump is communicated with gas storage holder, the bottom of described gas storage holder is downward-sloping to the connectivity part direction of sludge sump and gas storage holder, and its angle tilted is between 30 degree to 35 degree, and extends to the sidewall at sludge sump water outlet place; The cross section of the bottom of described gas storage holder is indent semisphere; Described gas storage holder entirety is in up-narrow and down-wide trapezoidal, described pneumatic tube is located at trapezoidal top, described pneumatic tube is provided with escape valve, and the bottom of described gas storage holder is provided with inlet pipe and water feed apparatus, is provided with water-freeing arrangement in the bottom near sludge sump water outlet place sidewall.
2. a kind of methane holder as claimed in claim 1, is characterized in that: the tube head of described pneumatic tube is provided with sponge.
3. one kind comprises the methane-generating pit of the gas storage holder of claim 1, comprise main pond and water pressure house, described main pond is made up of air storage chamber and fermentation vat, air storage chamber end face is 45 centimetres, 50 centimetres or 60 centimetres higher than the distance of water pressure house end face, the top of air storage chamber is provided with airway, the side in described main pond is provided with into excrement mouth, and opposite side communicates with water pressure house; Described water pressure house is provided with overflow port, it is characterized in that: the described excrement mouth that enters is positioned on the sidewall of fermentation vat; Be provided with feces outlet between described fermentation vat and water pressure house, this feces outlet is positioned on another sidewall of fermentation vat; Described enter the upper edge of excrement mouth be positioned on same level line with the top of feces outlet; The bottom of described fermentation vat starts to water pressure house direction downward-sloping from entering excrement mouth place sidewall, and its angle tilted is between 30 degree to 35 degree, and extends to the sidewall at water pressure house overflow port place; Being provided with cross section at the bottom of the pond of described fermentation vat is indent hemispheric excrement slag sluice way; Described air storage chamber cross section is up-narrow and down-wide trapezoidal, and the bottom of air storage chamber sidewall is located on the upper edge entering excrement mouth, and described airway is positioned at trapezoidal top, and described airway is provided with escape valve;
Described methane-generating pit also comprises gas storage holder and sludge sump, the top of gas storage holder is provided with pneumatic tube, one sidewall of described sludge sump is provided with water outlet, it is characterized in that: another sidewall of described sludge sump is communicated with gas storage holder, the bottom of described gas storage holder is downward-sloping to the connectivity part direction of sludge sump and gas storage holder, and extends to the sidewall at sludge sump water outlet place; The cross section of the bottom of described gas storage holder is indent semisphere; Described gas storage holder entirety is in up-narrow and down-wide trapezoidal, and described pneumatic tube is located at trapezoidal top, and described pneumatic tube is provided with escape valve, is provided with the inlet pipe connecting described airway, and is tightly connected between airway and inlet pipe bottom described gas storage holder; The bottom of gas storage holder is also provided with water feed apparatus, and water-freeing arrangement.
4. comprise the methane-generating pit of this gas storage holder as claimed in claim 3, it is characterized in that: described air storage chamber is also provided with main pond safety interlock, described main pond safety interlock are made up of the insurance hole and the relief cover insured on hole that are positioned at Chi Ding, is provided with the sealing edge for sealing at the bottom of relief cover lid around described insurance hole.
5. the arbitrary methane-generating pit comprising this gas storage holder as described in claim 3 or 4, is characterized in that: it also comprises detritus pool, and described detritus pool enters excrement mouth by feeding-passage and main pond and communicates; The bottom of described detritus pool is the semisphere of indent, described bottom is provided with ball valve, bottom described detritus pool higher than enter excrement mouth on along 20 centimetres to 30 centimetres, described feeding-passage is wide at the top and narrow at the bottom tubaeform, and the feeding-passage mouth on detritus pool sidewall is positioned at the middle part of detritus pool sidewall.
6. the arbitrary methane-generating pit comprising this gas storage holder as described in claim 3 or 4, is characterized in that: described main pond sidewall comprises brick structure matrix, the first concrete layer, thermal insulation layer, the second concrete layer, preservative coat successively.
7. comprise the methane-generating pit of this gas storage holder as claimed in claim 6, it is characterized in that: described thermal insulation layer is made up of plastic film layers, described preservative coat is formed by water glass and cement mixing.
8. the arbitrary methane-generating pit comprising this gas storage holder as described in claim 3 or 4, is characterized in that: it also comprises a feace storing pool, and the overflow port of described water pressure house communicates with feace storing pool.
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| CN201410366428.8A CN104087504B (en) | 2014-07-30 | 2014-07-30 | A kind of methane holder and comprise the methane-generating pit of this gas storage holder |
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| CN108220132A (en) * | 2016-12-12 | 2018-06-29 | 广西科学院 | A kind of hydraulic methane pool device for exempting from crust |
| CN106811400B (en) * | 2017-03-30 | 2023-08-04 | 张共敏 | Stirring-free dynamic dry anaerobic fermentation system |
| CN112520253B (en) * | 2019-09-18 | 2022-06-03 | 中国石油天然气股份有限公司 | Heat-preservation storage tank structure and construction method thereof |
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| CN201433215Y (en) * | 2009-08-18 | 2010-03-31 | 张小虎 | Piston type constant pressure methane tank |
| CN203065478U (en) * | 2013-02-05 | 2013-07-17 | 郭禄昌 | Novel efficient flat barrel-shaped combined biogas generating pit |
| CN203128555U (en) * | 2013-02-22 | 2013-08-14 | 郭禄昌 | Novel circular-pot-shaped high-efficiency combined marsh gas tank |
| CN204039394U (en) * | 2014-07-30 | 2014-12-24 | 何跃超 | A kind of methane holder and comprise the methane-generating pit of this gas storage holder |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201433215Y (en) * | 2009-08-18 | 2010-03-31 | 张小虎 | Piston type constant pressure methane tank |
| CN203065478U (en) * | 2013-02-05 | 2013-07-17 | 郭禄昌 | Novel efficient flat barrel-shaped combined biogas generating pit |
| CN203128555U (en) * | 2013-02-22 | 2013-08-14 | 郭禄昌 | Novel circular-pot-shaped high-efficiency combined marsh gas tank |
| CN204039394U (en) * | 2014-07-30 | 2014-12-24 | 何跃超 | A kind of methane holder and comprise the methane-generating pit of this gas storage holder |
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