CN104087503B - A kind of method of stalk marsh gas supply station and production stalk marsh gas thereof - Google Patents
A kind of method of stalk marsh gas supply station and production stalk marsh gas thereof Download PDFInfo
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Abstract
The present invention provides a kind of stalk marsh gas supply station and produces the method for stalk marsh gas, belongs to biogas production technical field. It solving in the fermentation of existing straw marsh gas station, stalk hydrolysis, the three phases producing acid and methane phase, in a fermentor tank, cause the problem decomposing slowly, easily occurring crust. This stalk marsh gas supply station comprises acidification pool, anaerobic pond, gas storage holder, desulfurizer, fire retardant device, pipe connecting one and pipe connecting two, having feeding mouth on acidification pool and have at feeding mouth place can by the cover plate of its opening and closing, acidification pool, anaerobic pond, gas storage holder, desulfurizer and fire retardant device are cascaded successively by pipe connecting one, the two ends of pipe connecting two are connected on acidification pool and anaerobic pond respectively, and pipe connecting two has reflux pump. Adopt two-phase zymotechnique technology, it is achieved acidication and methane phase are fermented respectively in different reactors, greatly improve the efficiency of stalk fermentation anaerobic reactor.
Description
Technical field
The invention belongs to biogas production technical field, it relates to a kind of method of stalk marsh gas supply station and production stalk marsh gas thereof.
Background technology
Stalk marsh gas refers to and utilizes biogas facility, take agricultural crop straw as main raw material, under the conditions such as strict anaerobic environment and certain temperature, moisture, potential of hydrogen, and a kind of inflammable gas that the anaerobically fermenting through microorganism produces. Stalk makees biogas fermentation material and mainly adopts wheat, corn, peanut, Soybean and Other Crops stalk, and the conventional stalk marsh gas in rural area is mainly divided into full straw methane fermentation and stalk and human and animal excreta mixed fermenting marsh gas. Agricultural crop straw is the byproduct that in agriculture production, quantity is maximum; it it is the precious resources of a kind of forever continuous property in a large number; if fully utilizing; can not only turn waste into wealth; preserve the ecological environment, promote the Sustainable development of agriculture production, but also can be the cheap raw material that fertilizer, herding, edible mushrooms, the energy, processing industry etc. provide a large amount of; thus drive the structure of rural undertaking and even the change of whole rural area structure, promote the raising of life of farmers quality and the improvement of urban and rural environment. Conventional peasant understanding is a kind of precious resources less than stalk, is abandoned or burns, not only cause the wasting of resources, and brings serious environmental pollution, causes the social concerns such as traffic safety.
In recent years, in country with, under the support of local government, biogas obtains and develops rapidly. But this area just concentrated in aquaculture, ight soil raw material is more sufficient, and biogas develops rapidly, and peasant household utilizes biogas can obtain the enough cleaning cheap energy for daily life. Due to the fast development of large-scale cultivation industry; peasant household's dispersion cultivation reduces gradually; in some non-concentrated culture zones; the minimizing of feces of livestock and poultry; supply falls short of demand to make the raw material of biogas; buying ight soil price height, road to culture zone far, therefore, many areas have occurred that the production and use of marsh gas is stopped using due to insufficient raw material or abandons the phenomenon in pond.
Although crop straw burning phenomenon reduces to some extent under the pressure of relevant policies, but the burning punish the measure of stalk can only contain the waste of stalk and the pollution of environment to a certain extent. Strengthen stalk comprehensive utilization and not only can alleviate resource scarcity, problem of environmental pollution, and add the income of peasant to a certain extent, decrease the problem of rural laborer's surplus. It should be noted that development of being based on future when stalk comprehensive utilization, strain is blocked up as dredging, as stalk fermentation producing methane technology exactly agricultural crop straw is converted into cleaning, efficiently, the cheap energy easily, utilize the innovation of technology and popularization to turn into the really useful energy " having misplaced the resource of position ". Government should pay attention to the construction development of stalk marsh gas work, in policy, formulates relevant policies, it is ensured that the development of stalk marsh gas can obtain the support energetically of Government and enterprise; In fund, strengthen the subsidy support dynamics to stalk marsh gas. And Germany is in the construction of biogas, in order to encourage the development of biogas, implement generating online subsidy policy, the development and utilization having promoted biogas energy strong in policy. China is also in the biogas early stage of development, and by government to the subsidy of ecological electricity consumption electricity price, peasant household obtains material benefit in marsh gas power generation, the strong exploitation facilitating eco-energy; Germany establishes biogas engineering quality control regulation and the standards system of complete set in the whole nation from the leadership to the masses, and the research and development and application promoting its biogas technology are played very big effect, has number of values to obtain the place of China's study.
In biogas production, a lot of patent of China all has the technology of autonomous innovation, the utility model patent [application number: 200920096809.3] of a kind of straw marsh gas station about environment-friendly high-efficiency as disclosed in 2010. This straw marsh gas station comprises the feed reservoir, material feeding jar and the fermentor tank that connect successively, and material feeding jar is connected respectively by gas pipeline carries material storage tank and discharging storage tank, carries material storage tank and arranges vacuum pump, and discharging storage tank arranges force (forcing) pump. Fermentor tank top connects separation purifier by generating tube road, and the biogas pipeline arranging compressor connects separation purifier and biogas storage tank respectively. The mechanize charging and discharging of stalk can be realized, solve the problem that stalk fermentation conducts heat, fermentation efficiency is low. But in this kind of straw marsh gas station ferments, stalk hydrolysis, the three phases producing acid and methane phase are in a fermentor tank, it is very difficult to realize the control by stages of pH value, and decomposing slow, raw material availability is low, easily occurs crusting.
Summary of the invention
It is an object of the invention to for existing technical problem, it is proposed that a kind of decomposition is fast, not easily there is the stalk marsh gas supply station of crust in raw material availability height.
The object of the present invention realizes by following technical proposal: a kind of stalk marsh gas supply station, it is characterized in that, it comprises acidification pool, anaerobic pond, gas storage holder, desulfurizer, fire retardant device, pipe connecting one and pipe connecting two, having feeding mouth on described acidification pool and have at feeding mouth place can by the cover plate of its opening and closing, above-mentioned acidification pool, anaerobic pond, gas storage holder, desulfurizer and fire retardant device are cascaded successively by pipe connecting one, the two ends of above-mentioned pipe connecting two are connected on acidification pool and anaerobic pond respectively, described pipe connecting two has reflux pump, pipe connecting one between described acidification pool and anaerobic pond has control valve, the end of described pipe connecting one is connected with a point family joint.
The stalk chosen is put into acidification pool, the quick acidolysis of stalk is formed " the straw nutrition liquid " of a large amount of lower-molecular substance composition such as monose, amino acid, glycerine, lipid acid. Stalk liquid in acid pond being put into anaerobic pond, adds inoculum mixing, anaerobic pond is carried out water seal, stalk liquid is fully contacted with inoculum in anaerobic pond, breeding hyperplasia, generation methane is main biogas. Opening reflux pump, be withdrawn in acidification pool by the stalk liquid not reacted in anaerobic pond by pipe connecting two and re-use, the stalk liquid of recovery serves as the nutrient solution of undecomposed stalk. The biogas produced is transported in gas storage holder through pipe connecting one, is provided with desulfurizer in gas storage holder, by the dust that contains in biogas and SO2Carry out dedusting and desulfurization process. Biogas in gas storage holder is assigned to each user residence by point family joint, fire retardant device in gas storage holder is used for stoping in point family joint propagation of flame and prevents tempering and cause blast, control valve can control amount and the time of the stalk liquid inflow anaerobic pond of acidification pool, realize artificial regulation and control gas production rate, for central gas supply provides favourable condition.
Described cover plate place is connected with touching switch, and the touching switch open above-mentioned when cover plate is opened also makes the energising operation of above-mentioned reflux pump. When to be put into new stalk in acidification pool, opening the cover plate of upper end, now reflux pump is also energized startup, and the stalk liquid in anaerobic pond is carried out reflow treatment.
The motor place of described reflux pump has the rly. that can make to stop after motor action setting-up time. When in acidification pool backflow stalk liquid reach a certain amount of after, motor automatic stop, prevents stalk liquid excessive and wastes.
Described gas storage holder comprises the inner cabinet for cavity, it is fixed with dividing plate in described cabinet, cabinet is divided into neighbouring two cavity by aforementioned barriers: upper cavity and lower chamber, the left and right sides of above-mentioned upper cavity has inlet mouth and air outlet respectively, and above-mentioned desulfurizer and fire retardant device are all arranged in upper cavity. Desulfurizer and fire retardant device are all located at gas storage holder, integral structure, and what eliminate desulfurizer and fire retardant device takies space.
An above-mentioned point family joint comprises body in T shape, and one end of described body is for the entrance end being connected with pipe connecting one end, and the other closed at both ends of described body and the body between other two ends have some exit end. Exit end is connected with the inlet pipe of each user, point family joint for connecting the inlet pipe of pipe connecting one and each resident, by gas storage holder biogas out as required each user of runner inlet pipe alone.
Described body is connected in outside cabinet. Point family joint is connected on outside cabinet, relatively more firm, and convenient overhauls nearby.
Described acidification pool is positioned at more than ground, and described anaerobic pond is embedded in below ground. Acidification pool high-land, anaerobic pond physical features is low, and the acidifying exit of acidification pool is positioned at lower end, and stalk liquid is flowed to by height and low automatically enters anaerobic pond.
Having acidifying entrance and acidifying outlet on described acidification pool, above-mentioned acidifying entrance is positioned at acidifying outlet top, and above-mentioned pipe connecting one is connected to acidifying exit, and above-mentioned pipe connecting two is connected to acidifying ingress. Acidifying entrance is positioned at top, conveniently puts into fresh straw, is also conducive to the sealing of cover plate; The stalk liquid produced enters into pipe connecting one by acidifying outlet, then enters into anaerobic pond; And the stalk liquid in anaerobic pond is refluxed, by pipe connecting two, the acidifying entrance that pump is withdrawn into acidification pool.
Described cover plate is positioned at acidification pool top and cover plate is sheet glass. Sheet glass is transparent, plays sealing thermal insulation effect, and the personnel of convenient top check acidification pool internal medium.
Pipe connecting one between described anaerobic pond and gas storage holder is provided with check valve. The biogas that check valve is possible to prevent in gas storage holder flows back to anaerobic pond.
It is provided with flow control valve between described gas storage holder and point family joint. Flow control valve is carried to the amount of each user for controlling, and can also close flow control valve at Emergency time, cuts off the air feed of user.
Present invention also offers a kind of method that stalk marsh gas supply station produces stalk marsh gas, employing two-phase is fermented, stalk liquid enters pond, avoid feed liquid layering and crust in anaerobic pond, make product gas calorific value height, purity good, combustion impurities is few, and after supply station system starts one week, methane in sewage gas concentration reaches 60%.
The object of the present invention realizes by following technical proposal: a kind of method adopting above-mentioned stalk marsh gas supply station to produce stalk marsh gas, and the method comprises the following steps:
A, choose stalk: choose agricultural production process is left over without going mouldy, the stalk of free from extraneous odour, by manually removing the leaf of stalk, joint, sheath, obtain then being cut into some sections according to 1 2cm length in shaft-like stalk bar, obtaining stalk section;
B, pre-treatment: stalk section is pulverized by common pulper, then the stalk of pulverizing, common urea, lime are obtained stalk slag after stirring mediation according to weight ratio 100:1 3:2 5, with plastics film, stalk slag is covered sealing, raising plastics film after 5 10 days, the stalk obtaining Vandyke brown according to weight ratio 100:20 30 after stalk slag and water being in harmonious proportion is stuck with paste;
C, acidification: above-mentioned stalk is stuck with paste and drops in acidification pool, add and stick with paste the suitable water of weight with stalk, between acidification pool and the anaerobic pond producing biogas, there is the pipe connecting two both being connected, and on pipe connecting two, there is reflux pump, opening reflux pump makes natural pond liquid in anaerobic pond enter in acidification pool, wherein stalk sticks with paste the weight ratio with natural pond liquid is 100:5 15, and after 14 17 days, stalk is stuck with paste and is hydrolyzed to a large amount of lower-molecular substance such as monose, amino acid, glycerine, lipid acid, forms stalk liquid;
D, production biogas: have the pipe connecting one of both connections between acidification pool and anaerobic pond, pipe connecting one has control valve, opening controlling valve after 59 days, in acidification pool, stalk liquid enters in anaerobic pond through pipe connecting one, then control valve is closed, after 9 11 days, in anaerobic pond, produce biogas;
E, gas storage: anaerobic pond and gas storage holder are in series by above-mentioned pipe connecting one, the biogas in anaerobic pond enters in gas storage holder through pipe connecting one and stores.
Stalk used takes from rice field, common rural area, and without going mouldy, free from extraneous odour, removes stalk leaf, joint, sheath, only get from spike of rice root down 15cm length, is cut into 1-2cm and dries rear for subsequent use. Stalk is carried out pre-treatment, blend through pulper, the stalk of pulverizing is spilt urea and regulates carbon-nitrogen ratio, layering evenly sprinkles the additives such as lime, the stirring that adds water makes stalk fully moistening, and then compacting plastic skin covers sealing, carries out turning after 7 days, supplementary moisture content covers sealing again until stalk color becomes Vandyke brown, finally adds water and obtains stalk paste. By stalk stick with paste put into acidification pool, water filling and add cellulose degradation composite fungus agent soak, plastic skin cover compacting, seal two weeks up for safekeeping, stalk is allowed to be hydrolyzed the organic acid produced so that it is stalk is hydrolyzed into a large amount of lower-molecular substance such as monose, amino acid, glycerine, lipid acid, forms stalk liquid. Stalk liquid enters into anaerobic pond through pipe connecting one, adds inoculum mixing, and anaerobic pond carries out water seal, and stalk liquid is fully contacted with inoculum in anaerobic pond, breeding hyperplasia, and then continuous enrichment regulates PH value, put invalid gas, finally produce biogas. Biogas enters in gas storage holder through pipe connecting one, carries out desulfurization and purifying treatment in gas storage holder.
The described stalk in steps A is wheat or paddy rice or corn or oil rape or cotton or the sugarcane residue part after results seed. Make raw material application surface more extensive, it comprises: the various stalk of farm crop, cogongrass, shell, organic waste, leaf, excrement class material etc., from original basic Pig dung and urine etc., expand agricultural crop straw, organic waste etc. to, further mitigate rural area pollution source, also greatly widen the source of fermentation raw material.
Described step B stirs in common stirrer.
It is connected with common desulfurizer in the ingress of gas storage holder after described step D. Desulfurizer generally uses thionizer, the application that thionizer is built by laying bricks or stones with grouan at first the most extensive, and it utilizes water film desulfurization and dedusting principle, has another name called grouan water desulfurizing-dusting device, or name stone desulphurization water dust scrubber. Advantage is easy maintenance, and by preparing different dedusting agents, reaches dedusting and the effect of desulfurization (denitrogenation) simultaneously. Now along with the development of glass fibre reinforced plastics technology, thionizer changes into gradually and manufacturing with glass reinforced plastic. Comparing granite desulfurizing tower, glass reinforced plastic desulfurization tower cost is low, handling ease, stainless not rotten, weight are light, therefore becomes the development trend of thionizer from now on.
The end of described pipe connecting one has common biogas spark arrester. On the pipeline that biogas spark arrester is applicable to be arranged on the flammable biogas of conveying and storage tank, prevent the reverse propagation in pipeline of under abnormal condition flame, to avoid the generation of catastrophic failure.
Compared with prior art, the method for this stalk marsh gas supply station and production stalk marsh gas thereof has the following advantages:
1. adopt two-phase zymotechnique technology, pass through fermentation, acidication and methane phase is realized to ferment in different reactors respectively, product acid is separated with methanogenic phase mutually, changed into by stalk " the straw nutrition liquid " that is easy to digestion, then enter anaerobic reactor and produce biogas, prevent the acidification phenomenon that anaerobic reactor may occur, avoid feed liquid layering and crust in anaerobic pond, make product gas calorific value height, purity good, combustion impurities is few, greatly improves the efficiency of stalk fermentation anaerobic reactor.
2. adopt stalk liquid to enter anaerobic pond simultaneously, avoid the trouble that stalk directly enters pond and needs regularly to slag tap and reload, engineering non-stop run capable of circulation, anaerobism pond liquid and heap macerate pond stalk liquid can pump around circuit, the anaerobic pond that Reusability avoids needs the problem of regular scarfing cinder, anaerobic pond natural pond liquid out can complete-reclaiming stalk biochemistry pre-treatment, it is achieved natural pond liquid zero release.
3. the surplus slag of acidification pool stalk can mix and stir with new stalk material repeatedly, decomposes utilization further. Simultaneously can flow into the amount of anaerobic pond by acidizing fluid and the time realizes artificial regulation and control gas production rate, for central gas supply provides favourable condition.
4. alleviate peasant to drop into. The throwing work launch-work of household biogas peasant household comprises earth excavation, sandstone, unskilled labourer etc. needs 2000-3000 unit. Central gas supply, when accessing in man of peasant household, is only handed over 300-500 unit installation fee, is alleviated the disposable input of peasant.
5. alleviate rural area to pollute. The raw material range of straw two-phase fermentation methane engineering utilization is relatively wider, from original basic Pig dung and urine etc., expands agricultural crop straw, organic waste etc. to, further mitigates rural area pollution source. Particularly with submitting straw deduction gas expense use, also improving the enthusiasm that straw is collected by peasant household, some farm crop peasant households intended directly to burn in field originally, moved now biogas point to all actively.
6. solve follow-up management. Huge numbers of families build biogas, and face is wide and disperses, follow-up management cost of serving height, and biogas is safeguarded and is ignorant of again by peasant oneself, and being maintained as trouble, minor issue has accumulated over a long period into big problem, have impact on biogas and normally uses. Build stalk marsh gas supply station, with gas charge, specify understand technology people management, it may also be useful to peasant household there is no trouble and worry, solve again the problem of follow-up service difficulty.
7. expand biogas and cover face. In rural area, greatly peasant household is not owing to building place, and no longer the reason such as cultivating live pig, cannot build domestic methane tank. And solve this part peasant household by central gas supply and use the energy economical, cleaning. Biogas construction based on feces of livestock and poultry, it is necessary to building pond near breeding-ground, and breeding-ground is generally away from village and residential district, central gas supply difficulty is more. Owing to stalk is easily carried concentrated, it is possible to select village to build one or more biogas central gas supply engineering suitablely. Improve the covering face that peasant household uses. Stalk marsh gas construction is dissolved in new countryside construction, both contaminated solution source, takes full advantage of again resource, also become the beautiful landscape in one, rural area.
Accompanying drawing explanation
Fig. 1 is the structural representation in this stalk marsh gas supply station.
Fig. 2 is the principle of work figure in book stalk marsh gas supply station.
In figure, 1, acidification pool; 2, cover plate; 3, pipe connecting one; 4, pipe connecting two; 5, anaerobic pond; 6, desulfurizer; 7, fire retardant device; 8, gas storage holder; 9, reflux pump; 10, control valve; 11, family joint is divided; 12, check valve; 13, flow control valve; 14, dividing plate.
Embodiment
Stalk marsh gas supply station:
As shown in Figure 1, this stalk marsh gas supply station comprises acidification pool, anaerobic pond, gas storage holder, desulfurizer, fire retardant device, pipe connecting one and pipe connecting two, having feeding mouth on acidification pool and have at feeding mouth place can by the cover plate of its opening and closing, acidification pool, anaerobic pond, gas storage holder, desulfurizer and fire retardant device are cascaded successively by pipe connecting one, the two ends of pipe connecting two are connected on acidification pool and anaerobic pond respectively, pipe connecting two has reflux pump, pipe connecting one between acidification pool and anaerobic pond has control valve, the end of pipe connecting one is connected with a point family joint.
Specifically, acidification pool having acidifying entrance and acidifying outlet, acidifying entrance is positioned at acidifying outlet top, and pipe connecting one is connected to acidifying exit, and pipe connecting two is connected to acidifying ingress. Acidification pool is positioned at more than ground, and anaerobic pond is embedded in below ground. Acidification pool high-land, anaerobic pond physical features is low, and the acidifying exit of acidification pool is positioned at lower end, and stalk liquid is flowed to by height and low automatically enters anaerobic pond through pipe connecting one. Control valve can control amount and the time of the stalk liquid inflow anaerobic pond of acidification pool, it is achieved artificial regulation and control gas production rate, for central gas supply provides favourable condition.
Cover plate is positioned at acidification pool top, and cover plate place is connected with touching switch, touches switch open when cover plate is opened, and makes reflux pump energising operation, and cover plate is transparent sheet glass. The motor place of reflux pump has the rly. that can make to stop after motor action setting-up time, by the quantity of reflux of Control stalk liquid. As long as quantity of reflux can meet stalk liquid can drive hydrolysis mutually in solubility COD object both can, excessive quantity of reflux causes the waste of the energy. The process that gas effect is better than backflow every day and interval backflow in two days is produced in the process that reflux type refluxes after declining with gas production rate.
Pipe connecting one between anaerobic pond and gas storage holder is provided with check valve, is provided with flow control valve between gas storage holder and point family joint.
Gas storage holder comprises the inner cabinet for cavity, dividing plate it is fixed with in cabinet, cabinet is divided into neighbouring two cavity by dividing plate: upper cavity and lower chamber, and the left and right sides of upper cavity has inlet mouth and air outlet respectively, and desulfurizer and fire retardant device are all arranged in upper cavity. Point family joint comprises body in T shape, and one end of body is for the entrance end being connected with pipe connecting one end, and the other closed at both ends of body and the body between other two ends have some exit end, and body is connected in outside cabinet.
Selection village, this stalk marsh gas supply station builds one or more suitablely, it is to increase the covering face that peasant household uses. Stalk marsh gas construction is dissolved in new countryside construction, both contaminated solution source, takes full advantage of again resource, also become the beautiful landscape in one, rural area.
Stalk can be purchased to local peasant in stalk marsh gas supply station, not only facilitates increasing peasant income, can be used for again the biogas that peasant's day is conventional, reduces the electricity charge of peasant, the expenditure of combustion gas expense. From direct economic benefit measuring and calculating, peasant household's cooking of the family of general 3-5 mouth, within one day, about with 1.2 cubes of biogas, by the 1 yuan of calculating in every side, annual expenditure, at about 438 yuan, often hands over 1 kilogram of stalk can convert 0.10 yuan. As shown in the table, in view of this, it may also be useful to stalk is compared with using liquefied gas, fuel wood, coal briquette, electricity, it may also be useful to the most economical material benefit of stalk.
Stalk marsh gas and other lives are with year total expenditure contrasting table:
Produce stalk marsh gas method as shown in Figure 2:
Embodiment one
This adopts above-mentioned stalk marsh gas supply station to produce the method for stalk marsh gas, and the method comprises the following steps:
A, choose stalk: choose agricultural production process is left over without going mouldy, the stalk of free from extraneous odour, by manually removing the leaf of stalk, joint, sheath, obtain then being cut into some sections according to 1cm length in shaft-like stalk bar, obtaining stalk section;
B, pre-treatment: stalk section is pulverized by common pulper, then the stalk of pulverizing, common urea, lime are stirred according to weight ratio 100:1:2 and obtain stalk slag after being in harmonious proportion, with plastics film, stalk slag is covered sealing, raising plastics film after 5 days, the stalk obtaining Vandyke brown according to weight ratio 100:20 after stalk slag and water being in harmonious proportion is stuck with paste;
C, acidification: above-mentioned stalk is stuck with paste and drops in acidification pool, add and stick with paste the suitable water of weight with stalk, between acidification pool and the anaerobic pond producing biogas, there is the pipe connecting two both being connected, and on pipe connecting two, there is reflux pump, opening reflux pump makes natural pond liquid in anaerobic pond enter in acidification pool, wherein stalk sticks with paste the weight ratio with natural pond liquid is 100:5, and after 14 days, stalk is stuck with paste and is hydrolyzed to a large amount of lower-molecular substance such as monose, amino acid, glycerine, lipid acid, forms stalk liquid;
D, production biogas: have the pipe connecting one of both connections between acidification pool and anaerobic pond, having control valve on pipe connecting one, opening controlling valve after 5 days, in acidification pool, stalk liquid enters in anaerobic pond through pipe connecting one, then control valve is closed, after 9 days, in anaerobic pond, produce biogas;
E, gas storage: anaerobic pond and gas storage holder are in series by above-mentioned pipe connecting one, the biogas in anaerobic pond enters in gas storage holder through pipe connecting one and stores.
Stalk in steps A is wheat or paddy rice or corn or oil rape or cotton or the sugarcane residue part after results seed. Step B stirs in common stirrer, is connected with common desulfurizer in the ingress of gas storage holder after step D, and the end of pipe connecting one has common biogas spark arrester.
Embodiment two
This adopts above-mentioned stalk marsh gas supply station to produce the method for stalk marsh gas, and the method comprises the following steps:
A, choose stalk: choose agricultural production process is left over without going mouldy, the stalk of free from extraneous odour, by manually removing the leaf of stalk, joint, sheath, obtain then being cut into some sections according to 1.5cm length in shaft-like stalk bar, obtaining stalk section;
B, pre-treatment: stalk section is pulverized by common pulper, then the stalk of pulverizing, common urea, lime are stirred according to weight ratio 100:2:3 and obtain stalk slag after being in harmonious proportion, with plastics film, stalk slag is covered sealing, raising plastics film after 8 days, the stalk obtaining Vandyke brown according to weight ratio 100:25 after stalk slag and water being in harmonious proportion is stuck with paste;
C, acidification: above-mentioned stalk is stuck with paste and drops in acidification pool, add and stick with paste the suitable water of weight with stalk, between acidification pool and the anaerobic pond producing biogas, there is the pipe connecting two both being connected, and on pipe connecting two, there is reflux pump, opening reflux pump makes natural pond liquid in anaerobic pond enter in acidification pool, wherein stalk sticks with paste the weight ratio with natural pond liquid is 100:10, and after 16 days, stalk is stuck with paste and is hydrolyzed to a large amount of lower-molecular substance such as monose, amino acid, glycerine, lipid acid, forms stalk liquid;
D, production biogas: have the pipe connecting one of both connections between acidification pool and anaerobic pond, having control valve on pipe connecting one, opening controlling valve after 7 days, in acidification pool, stalk liquid enters in anaerobic pond through pipe connecting one, then control valve is closed, after 10 days, in anaerobic pond, produce biogas;
E, gas storage: anaerobic pond and gas storage holder are in series by above-mentioned pipe connecting one, the biogas in anaerobic pond enters in gas storage holder through pipe connecting one and stores.
Embodiment three
This adopts above-mentioned stalk marsh gas supply station to produce the method for stalk marsh gas, and the method comprises the following steps:
A, choose stalk: choose agricultural production process is left over without going mouldy, the stalk of free from extraneous odour, by manually removing the leaf of stalk, joint, sheath, obtain then being cut into some sections according to 2cm length in shaft-like stalk bar, obtaining stalk section;
B, pre-treatment: stalk section is pulverized by common pulper, then the stalk of pulverizing, common urea, lime are stirred according to weight ratio 100:3:5 and obtain stalk slag after being in harmonious proportion, with plastics film, stalk slag is covered sealing, raising plastics film after 10 days, the stalk obtaining Vandyke brown according to weight ratio 100:30 after stalk slag and water being in harmonious proportion is stuck with paste;
C, acidification: above-mentioned stalk is stuck with paste and drops in acidification pool, add and stick with paste the suitable water of weight with stalk, between acidification pool and the anaerobic pond producing biogas, there is the pipe connecting two both being connected, and on pipe connecting two, there is reflux pump, opening reflux pump makes natural pond liquid in anaerobic pond enter in acidification pool, wherein stalk sticks with paste the weight ratio with natural pond liquid is 100:15, and after 17 days, stalk is stuck with paste and is hydrolyzed to a large amount of lower-molecular substance such as monose, amino acid, glycerine, lipid acid, forms stalk liquid;
D, production biogas: have the pipe connecting one of both connections between acidification pool and anaerobic pond, having control valve on pipe connecting one, opening controlling valve after 9 days, in acidification pool, stalk liquid enters in anaerobic pond through pipe connecting one, then control valve is closed, after 11 days, in anaerobic pond, produce biogas;
E, gas storage: anaerobic pond and gas storage holder are in series by above-mentioned pipe connecting one, the biogas in anaerobic pond enters in gas storage holder through pipe connecting one and stores.
Claims (8)
1. a stalk marsh gas supply station, it is characterized in that, it comprises acidification pool, anaerobic pond, gas storage holder, desulfurizer, fire retardant device, pipe connecting one and pipe connecting two, having feeding mouth on described acidification pool and have at feeding mouth place can by the cover plate of its opening and closing, above-mentioned acidification pool, anaerobic pond, gas storage holder, desulfurizer and fire retardant device are cascaded successively by pipe connecting one, the two ends of above-mentioned pipe connecting two are connected on acidification pool and anaerobic pond respectively, described pipe connecting two has reflux pump, pipe connecting one between described acidification pool and anaerobic pond has control valve, the end of described pipe connecting one is connected with a point family joint, described cover plate place is connected with touching switch, the touching switch open above-mentioned when cover plate is opened also makes the energising operation of above-mentioned reflux pump, the motor place of described reflux pump has the rly. that can make to stop after motor action setting-up time.
2. a kind of stalk marsh gas supply station according to claim 1, it is characterized in that, described gas storage holder comprises the inner cabinet for cavity, it is fixed with dividing plate in described cabinet, cabinet is divided into neighbouring two cavity by aforementioned barriers: upper cavity and lower chamber, the left and right sides of above-mentioned upper cavity has inlet mouth and air outlet respectively, and above-mentioned desulfurizer and fire retardant device are all arranged in upper cavity.
3. a kind of stalk marsh gas supply station according to claim 2, it is characterized in that, an above-mentioned point family joint comprises body in T shape, one end of described body is for the entrance end being connected with pipe connecting one end, and the other closed at both ends of described body and the body between other two ends have some exit end.
4. a kind of stalk marsh gas supply station according to claim 3, it is characterized in that, described acidification pool has acidifying entrance and acidifying outlet, above-mentioned acidifying entrance is positioned at acidifying outlet top, above-mentioned pipe connecting one is connected to acidifying exit, and above-mentioned pipe connecting two is connected to acidifying ingress.
5. a kind of stalk marsh gas supply station according to claim 1 or 2 or 3 or 4, it is characterised in that, the pipe connecting one between described anaerobic pond and gas storage holder is provided with check valve.
6. a kind of stalk marsh gas supply station according to claim 5, it is characterised in that, it is provided with flow control valve between described gas storage holder and point family joint.
7. adopting any one stalk marsh gas supply station in the claims 1-6 to produce a method for stalk marsh gas, the method comprises the following steps:
A, choose stalk: choose agricultural production process is left over without going mouldy, the stalk of free from extraneous odour, by manually removing the leaf of stalk, joint, sheath, obtain then being cut into some sections according to 1 2cm length in shaft-like stalk bar, obtaining stalk section;
B, pre-treatment: stalk section is pulverized by common pulper, then the stalk of pulverizing, common urea, lime are obtained stalk slag after stirring mediation according to weight ratio 100:1 3:2 5, with plastics film, stalk slag is covered sealing, raising plastics film after 5 10 days, the stalk obtaining Vandyke brown according to weight ratio 100:20 30 after stalk slag and water being in harmonious proportion is stuck with paste;
C, acidification: above-mentioned stalk is stuck with paste and drops in acidification pool, add and stick with paste the suitable water of weight with stalk, between acidification pool and the anaerobic pond producing biogas, there is the pipe connecting two both being connected, and on pipe connecting two, there is reflux pump, opening reflux pump makes natural pond liquid in anaerobic pond enter in acidification pool, wherein stalk sticks with paste the weight ratio with natural pond liquid is 100:5 15, and after 14 17 days, stalk is stuck with paste and is hydrolyzed to a large amount of lower-molecular substance such as monose, amino acid, glycerine, lipid acid, forms stalk liquid;
D, production biogas: have the pipe connecting one of both connections between acidification pool and anaerobic pond, pipe connecting one has control valve, opening controlling valve after 59 days, in acidification pool, stalk liquid enters in anaerobic pond through pipe connecting one, then control valve is closed, after 9 11 days, in anaerobic pond, produce biogas;
E, gas storage: anaerobic pond and gas storage holder are in series by above-mentioned pipe connecting one, the biogas in anaerobic pond enters in gas storage holder through pipe connecting one and stores.
8. a kind of method adopting above-mentioned stalk marsh gas supply station to produce stalk marsh gas according to claim 7, it is characterised in that, it is connected with common desulfurizer in the ingress of gas storage holder after described step D.
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