CN107574115B - Industrial biomass biogas project application system - Google Patents
Industrial biomass biogas project application system Download PDFInfo
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- CN107574115B CN107574115B CN201710829175.7A CN201710829175A CN107574115B CN 107574115 B CN107574115 B CN 107574115B CN 201710829175 A CN201710829175 A CN 201710829175A CN 107574115 B CN107574115 B CN 107574115B
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- 239000002028 Biomass Substances 0.000 title claims abstract description 15
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 38
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- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 21
- 238000010248 power generation Methods 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 6
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- 238000000926 separation method Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000002361 compost Substances 0.000 claims description 5
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- 230000009471 action Effects 0.000 claims description 4
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- 230000020477 pH reduction Effects 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 3
- 241000605118 Thiobacillus Species 0.000 claims description 3
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 claims description 3
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- 229920002678 cellulose Polymers 0.000 abstract description 4
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- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003009 desulfurizing effect Effects 0.000 abstract 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
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- 210000003608 fece Anatomy 0.000 description 2
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- 241000283690 Bos taurus Species 0.000 description 1
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- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002053 acidogenic effect Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 229940039696 lactobacillus Drugs 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000696 methanogenic effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000010813 municipal solid waste Substances 0.000 description 1
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- 238000005303 weighing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Fertilizers (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an industrial biomass biogas project application system, which comprises a pulverizer, wherein the pulverizer pulverizes and measures purchased straws in proportion, and then conveys the straws to a storage tank for compaction, sealing and anaerobic treatment; the straws processed by the storage tank are pumped into a hydrolysis tank through a connected homogeneous feeding system, and the hydrolysis tank hydrolyzes and acidizes the straws and then is pumped into a fermentation tank; and fermenting and desulfurizing the straw in the fermentation tank, performing anaerobic fermentation, and performing biological desulfurization, dehydration, cooling, impurity removal and pressurization on part of methane generated by fermentation by a pretreatment system, and then entering a methane power generation system. The invention has the advantages of high biogas yield and straw utilization rate, easy decomposition of cellulose in the fermentation process, automatic cleaning of biogas residues, low desulfurization cost, good desulfurization effect, no need of catalyst and chemical sludge treatment, little biological sludge generation, low energy consumption, high removal efficiency and stable desulfurization efficiency.
Description
Technical Field
The invention belongs to the field of biomass energy, in particular to a straw co-production technology, and particularly relates to an industrial biomass biogas project application system.
Background
With the continuous development of economy and society, the global demand for energy is growing, the problems of energy shortage, environmental pollution and climate change caused by the massive consumption of traditional fossil energy are increasingly acute, and biomass energy is increasingly valued as a renewable energy source by governments and scientists of various countries. The straw is a good clean renewable energy source, is one of the most developed and utilized new energy sources, and has good economic, ecological and social benefits. The straw has various development and utilization ways, such as straw returning, straw gasification, straw power generation, ethanol production by straw, and the like. The yield of the straws is 7 hundred million tons per year in China, but only 50% of the straws can be used as energy at present, and most of the straws are in a low-efficiency combustion mode for residents in rural areas. Therefore, by improving the comprehensive utilization rate of the straw, it is imperative to accelerate the conversion and utilization of the straw.
Aiming at the current situations of unordered discarding and low-level utilization of the existing organic straws, livestock and poultry manure and organic garbage in rural villages and towns, the biogas-electric power-organic fertilizer-heat (cold) four-combined supply non-fossil energy supply mode developed for revolutionarily improving the ecology of rural living environments can effectively promote the development of rural planting industry and breeding industry, promote the agricultural efficiency and the peasant income increase, realize the ecological cycle of the improvement interaction and mutual assistance of rural modern agriculture, clean energy, human living environment and land, and is an important measure for new rural construction of societies. The mode has wide raw material adaptability, and can adopt yellow straws, green straws, other green fiber plants, cattle and sheep raising manure, urban kitchen waste and livestock manure as main raw materials to produce methane. Meanwhile, the mode is free and flexible, capacity scale adjustment can be carried out according to raw material resource conditions and target community population of villages and towns, novel rural community construction is matched, the construction scale is 500Nm3 to 50000Nm 3/day straw biogas distributed energy device, the gas, electricity and cold and heat requirements of 5000-80000 people can be met, organic fertilizers are provided for farmlands, and the energy revolution of villages, blue water and the rural areas is realized.
However, in the prior art, the biogas yield and the straw utilization rate are low, the anaerobic fermentation time is long, and during fermentation, because the straw contains a large amount of cellulose, the straw is difficult to thoroughly decompose in the fermentation process, short fibers still remain in the biogas residues after fermentation, the fibers can accumulate and wind and float upwards to generate caking, the biogas accumulation is blocked, the raw material utilization rate is low, and the generated biogas residues can also cause the blockage of a biogas tank; meanwhile, when the biogas is produced from the anaerobic fermentation device, particularly during medium-temperature fermentation and high-temperature fermentation, a large amount of H2S is carried, and as a large amount of water vapor exists in the biogas, the water and the H2S in the biogas act together, so that corrosion and blockage of metal pipelines, valves and flow meters are accelerated; in addition, SO2 is generated after the H2S is combusted, and the SO2 is combined with water vapor in combustion products to form sulfuric acid, SO that the metal surface of equipment is corroded, and the pollution to the atmosphere environment is caused, SO that the human health is influenced. Therefore, solving the above-mentioned problems has become a challenge in the prior art.
Disclosure of Invention
In order to solve the defects, the invention aims to provide the industrial biomass biogas project application system which has the advantages of high biogas yield and straw utilization rate, easy decomposition of cellulose in the fermentation process, automatic cleaning of biogas residues, low desulfurization cost, good desulfurization effect, no need of catalyst and chemical sludge treatment, little biological sludge generation, low energy consumption, high removal efficiency and stable desulfurization efficiency.
In order to achieve the aim, the invention provides an industrial biomass biogas project application system which comprises a pulverizer, wherein the pulverizer pulverizes and measures purchased straws in proportion, and then conveys the straws to a storage tank through a conveyor for compaction, sealing and anaerobic treatment; the straws processed by the storage tank are pumped into a hydrolysis tank through a pump by a connected homogeneous feeding system, the straws are submerged and stirred in the hydrolysis tank, are intermittently aerated by a Roots blower, and are pumped into a fermentation tank by the pump after hydrolysis and acidification; after the straw is subjected to fermentation and desulfurization treatment in the fermentation tank, part of methane generated by fermentation is subjected to biological desulfurization, dehydration, temperature reduction, impurity removal and pressurization by a pretreatment system, and then enters a methane power generation system, the generated electric energy is generated by a generator and is integrated into a national power grid system, and the rest methane is conveyed to a nearby village through a pipe network after being pressurized for domestic gas of residents; the fermented straws are pumped to a solid-liquid separator unit for solid-liquid separation, separated biogas slurry is cooled in a biogas slurry pond through a water cooling tower and then flows back to a hydrolysis tank for mixing materials for continuous fermentation, separated biogas residues are conveyed to an organic fertilizer production workshop, and the biogas residues are conveyed to the organic fertilizer production workshop by a loader.
Further, the biogas residues are coarsely piled with the moisture and carbon nitrogen ratio according to the raw material components in an organic fertilizer production workshop through a mixing and stirring device, and are piled in a pile shape after being mixed to form a compost finished product, the compost finished product is screened, the undersize materials are respectively treated according to the moisture content, the undersize materials are granulated and then are sent to a dryer heated by the tail gas of a generator for drying, trace elements are added in proportion, and the mixture is stirred and mixed to form a finished product, and the finished product is packaged and warehoused for sale.
Furthermore, waste heat generated by a generator in the biogas power generation system is used for heating cylinder sleeve water, heating materials and preserving heat of the system, and tail gas of the generator is used for drying the materials in an organic fertilizer production workshop.
Further, the biogas slurry is circulated back to the homogeneous feeding system through the biogas slurry, and the straws are stirred and hydrated, so that the straws are conveniently pumped into the hydrolysis tank through the pump.
Furthermore, the desulfurization treatment refers to a desulfurization process that a certain amount of air is introduced into a fermentation tank through a pipeline connected with a positive and negative pressure protector by utilizing the action of microorganisms, and the microorganisms of the genus serium and the genus thiobacillus attached to a gas bag tensioning belt, a tank wall and a liquid surface absorb hydrogen sulfide in the metabolism process and convert the hydrogen sulfide into elemental sulfur and then into sulfuric acid, and H2S is oxidized into elemental sulfur or sulfurous acid under the condition of micro oxygen. The treatment process does not need any additive, the required air is generated by the operation of an on-site air compressor, and the reaction equation is as follows:
2H2S + O2 →2H2O +2S
2H2S +3O2 →2H2SO3
the desulfurization method is widely used in Europe, and is adopted in some projects in China, and has the advantages that: no catalyst, no chemical sludge treatment, little biological sludge generation, low energy consumption and high removal efficiency. The desulfurization efficiency is stable, the H2S removal rate can reach more than 90%, the desulfurization cost is low, the treatment cost per cubic meter of marsh gas is less than 0.03 yuan, and the cost is reduced by more than 70% compared with a chemical desulfurization method. When a certain amount of oxygen is introduced into the biogas, the special aerobic sulfur-philic bacteria (such as silk sulfur bacteria genus or thiobacillus genus) can oxidize the hydrogen sulfide component in the biogas into sulfur element and further oxidize the sulfur element into sulfuric acid according to different environmental conditions. The conditions required for this reaction are: oxygen, nutrient solution, temperature, humidity and growth area.
In summary, compared with the prior art, the invention has the advantages that: the technology and the equipment system are provided, the technology and the equipment system are suitable for the technology, the biogas yield and the straw utilization rate are advanced at home, the storage tank process realizes the acidification pretreatment of the raw materials through the anaerobic fermentation of lactic acid bacteria, the biogas fermentation process realizes the independent separation of the acidogenic stage and the methanogenic stage, the multi-flora collaborative fermentation is realized through the optimization of the silage and biogas fermentation process processes, the anaerobic fermentation time is greatly reduced, cellulose in a fermentation tank is easy to decompose, biogas residues and biogas slurry are timely extracted, a solid-liquid separator unit performs solid-liquid separation, the biogas slurry is recycled, the biogas residues are manufactured into organic fertilizers, the biogas power generation realizes the triple supply of cold, heat and electricity, and can meet all electric power and heat required by factories without consuming fossil energy. Meanwhile, a biological desulfurization method is adopted, and the effect of microorganisms is utilized to oxidize H2S into elemental sulfur or sulfurous acid under the condition of micro-oxygen. The desulfurization method is widely used in Europe, and is adopted in some projects in China, and has the advantages that: no catalyst, no chemical sludge treatment, little biological sludge generation, low energy consumption and high removal efficiency. The desulfurization efficiency is stable, the H2S removal rate can reach more than 90%, the desulfurization cost is low, the treatment cost per cubic meter of methane is less than 0.03 yuan, the cost is reduced by more than 70% compared with that of a chemical desulfurization method, and the corrosion and blockage of metal pipelines, valves and flow meters caused by the combined action of water and H2S in methane due to the fact that a large amount of water vapor exists in the methane are avoided.
Drawings
FIG. 1 is a diagram showing the basic composition of an industrial biomass biogas project application system of the invention.
Detailed Description
Referring to fig. 1, the invention provides an industrial biomass biogas project application system, which is characterized in that after fresh harvested straws are crushed, the straws are pretreated and conveyed to a straw storage tank for compaction, sealing and anaerobic treatment, and after fermentation for about 5-40 days, certain acidic substances such as lactic acid and the like are accumulated in raw materials.
Raw materials enter hydrolysis tanks (V0201 and V0202) through a homogenizing feeding system (SC-FS-001), continuous stirring is achieved through submerged stirring (AG-HU-001/002), intermittent aeration is conducted through a Roots blower (AB-PCR 1-001/002), after hydrolysis and acidification for 2 days, the raw materials are pumped into fermentation tanks (V0203 and V0204), after anaerobic fermentation for about 20 days, the raw materials are pumped to a solid-liquid separation (PSS-CP-001) unit for solid-liquid separation, and after the separated biogas slurry is cooled in a biogas pool (V0205) through a cooling tower (CP-CP-001/002), the separated biogas slurry flows back to the hydrolysis tanks (V0201 and V0202) for continuous fermentation, and biogas residues are conveyed to an organic fertilizer production workshop.
Part of biogas generated by fermentation enters a biogas power generation system after biological desulfurization (AB-PCR-003/004), dehydration (E0302), cooling (E0308), impurity removal (V0301) and pressurization (C0303-0304) by a pretreatment system, and the rest biogas is transported to a nearby village through a pipe network after pressurization (C0306-0307) for domestic gas of residents. Part of the electric energy generated by biogas generation is used for production, and the rest is integrated into the national power grid. The waste heat of the generator is used for heating cylinder sleeve water (E0308), material heating and system heat preservation are provided, and the tail gas of the generator is used for drying materials in an organic fertilizer production workshop.
The biogas residues are sent to an organic fertilizer production workshop by a loader, sent to a mixing and stirring device, are subjected to coarse adjustment of fertilizer moisture and carbon nitrogen ratio according to raw material components, are mixed, are piled in a pile shape, and are decomposed for about 15-20 days. The compost finished product is screened (M0408/M0420), and the screened matters are respectively treated according to the moisture content. Granulating (M0414) the undersize, sending into a dryer (E0417) heated by generator tail gas, drying, adding microelements in proportion, stirring (M0410), mixing, packaging (M0423), and warehousing for sale.
The system is operated by the following steps:
(1) Preparation of raw materials
In one month before harvesting corn straw, overhauling a crusher, transportation equipment and the like, and purchasing spare parts. And cleaning and sterilizing the straw storage pool. Harvesting, loading and transporting. Metering and weighing and checking that doping is false. The raw materials are crushed, and the length of the raw materials is required to be smaller than 20mm. The water is controlled by feeding (60-70% is preferable), and the water is extruded without dripping. Piling up the materials in a silage pond by a forklift, compacting, sealing the silage pond by a plastic film, pressing a heavy object on the silage pond, enabling the materials to be in an anaerobic state, and generating carbon dioxide by the synergistic fermentation action of anaerobic lactobacillus, aerobic bacteria and beneficial fungi to cause an anaerobic environment, wherein the secreted lactic acid enables the raw materials to be acidic (pH value is 3.8-4.4). Silage material is fermented hermetically for 40-50 days.
(2) Biogas production
The forklift sends raw materials into a feeding box, a scraper at the bottom of the box drags straws to be slowly transported forwards, the straws enter solid-liquid mixing equipment (liquid of mixed materials comes from biogas slurry), and the dragon pushes the mixed materials to be transported forwards and is transported to a hydrolysis tank for hydrolysis through a screw pump.
Heating the mixed material to 36-38 ℃ in a hydrolysis tank, performing submerged stirring to realize continuous stirring, intermittently aerating by a Roots blower, hydrolyzing and acidifying in the hydrolysis tank for two days, and pumping to a fermentation tank by a pump. The hydrolysate from the hydrolysis tank was heated to 48 ℃ in the fermenter with regular stirring by a long shaft stirrer in the fermenter. The fermented material stays in the fermentation tank for about 20 days, and the fermented material is conveyed to a solid-liquid separation unit by a pump, and the generated biogas is conveyed to CHP.
And (3) cooling the biogas slurry after solid-liquid separation in a biogas slurry tank, conveying the biogas slurry to a solid feeding system by a pump, and finally, entering a hydrolysis tank for continuous fermentation. And conveying the biogas residues into an organic fertilizer production workshop to produce organic fertilizer.
(3) Cogeneration
Opening a methane total air inlet manual valve and 2 Roots blower inlet manual valves; the power key of the cold dryer is pressed for a long time, the cold dryer is started, and the working condition of the cold dryer is observed; starting a Roots blower, and automatically adjusting the methane to 25kPa by PID; and opening a manual valve at the inlet of the generator set, and observing the front and rear pressure conditions (25.15 kPa) of the pressure stabilizing valve. And adjusting the output current of the concentration adjusting potentiometer to 5.5mA according to the concentration condition of the methane. (52.5% biogas concentration). The methane concentration is less than <5.5mA, and the methane concentration is greater than 5.5mA (fine tuning).
Pressing a manual key of a display screen of the controller, pressing a start key (start), listening to the starting sound of the engine, and starting a heat exchange fan; after the rotation speed of the engine is stabilized at 1500 revolutions, observing the temperature condition of the engine cylinder, wherein the highest cylinder temperature is not more than 690 ℃, and when the cylinder temperature is increased too fast, slowly adjusting a concentration adjusting potentiometer to control the temperature condition of the cylinder (52.5% concentration methane is adjusted to 8 mA); after the engine is started and works normally, a grid-connected key (close) is pressed, and the engine enters an automatic grid-connected program; and after grid connection, the output current of the concentration adjusting potentiometer is adjusted to 5.5mA (initial starting value), after the stitching of the engine is increased to an initial set load (6%, 30 kw), the power-up button is pressed (2 seconds are reserved after each pressing), and when the power of the generator is close to the set power, the power-up button is pressed again. And so on gradually increases to the target power generation load.
(4) Organic fertilizer production
The process flow of proportioning, stirring, fermenting, ageing (decomposing), granulating, drying and bagging is adopted.
The biogas residues are sent to a fertilizer production workshop by a loader, sent to a mixing and stirring device, coarse-tuned according to the raw material components, piled up in a pile shape after mixing, turned over about 2 days, turned over by a paddle type turning machine and paddles (rotating teeth type and capable of rotating positively and negatively), and the materials in the groove can be moved backwards and water is supplemented during turning. The whole process of beginning to decrease after medium temperature and high temperature and reaching the temperature in the initial stage of fermentation generally takes 10 to 12 days. The materials are fermented in the first stage, and a part of organic matters which are easy to decompose and are hard to decompose exist, so that the materials need to be continuously fermented to be decomposed. At this time, the temperature is continuously reduced, and the decomposition is achieved when the temperature is stabilized at about 35-40 ℃, generally 5-10 days.
The foregoing is merely exemplary of the application and it should be noted that modifications and adaptations to the invention can be made by one of ordinary skill in the art without departing from the principles of the application and are intended to be within the scope of the invention.
Claims (5)
1. An industrial biomass biogas project application system, includes the rubbing crusher, its characterized in that: the pulverizer pulverizes the purchased straws in proportion, and then conveys the straws to a storage pool through a conveyor for compaction, sealing and anaerobic treatment; the straws processed by the storage tank are pumped into a hydrolysis tank through a pump by a connected homogeneous feeding system, the straws are submerged and stirred in the hydrolysis tank, are intermittently aerated by a Roots blower, and are pumped into a fermentation tank by the pump after hydrolysis and acidification; after the straw is subjected to fermentation and desulfurization treatment in the fermentation tank, part of methane generated by fermentation is subjected to biological desulfurization, dehydration, temperature reduction, impurity removal and pressurization by a pretreatment system, and then enters a methane power generation system, the generated electric energy is generated by a generator and is integrated into a national power grid system, and the rest methane is conveyed to a nearby village through a pipe network after being pressurized for domestic gas of residents; the fermented straws are pumped to a solid-liquid separator unit for solid-liquid separation, separated biogas slurry is cooled in a biogas slurry pond through a water cooling tower and then flows back to a hydrolysis tank for mixing materials for continuous fermentation, separated biogas residues are conveyed to an organic fertilizer production workshop, and the biogas residues are conveyed to the organic fertilizer production workshop by a loader.
2. An industrial biomass biogas project application system according to claim 1, characterized in that: the biogas residues are coarsely piled with fertilizer moisture and carbon nitrogen ratio in an organic fertilizer production workshop through a mixing stirring device according to raw material components, piled in a pile shape after mixing to form a compost finished product, the compost finished product is screened, undersize materials are respectively treated according to the moisture content, the undersize materials are granulated and then sent to a dryer heated by generator tail gas, the dryer is used for drying, trace elements are added in proportion, and the mixture is stirred and mixed to prepare a finished product, packaged and warehoused for sale.
3. An industrial biomass biogas project application system according to claim 1, characterized in that: waste heat generated by a generator in the biogas power generation system is used for heating cylinder sleeve water, heating materials and preserving heat of the system, and tail gas of the generator is used for drying the materials in an organic fertilizer production workshop.
4. An industrial biomass biogas project application system according to claim 1, characterized in that: the biogas slurry is circulated back to the homogeneous feeding system through the biogas slurry, and the straws are stirred and hydrated, so that the straws are conveniently pumped into the hydrolysis tank through the pump.
5. An industrial biomass biogas project application system according to claim 1, characterized in that: the desulfurization treatment is a desulfurization process that a certain amount of air is introduced into a fermentation tank through a pipeline connected with a positive and negative pressure protector by utilizing the action of microorganisms, and the microorganisms of the genus silk sulfur and the genus thiobacillus attached to a gas bag tensioning belt, a tank wall and a liquid surface absorb hydrogen sulfide in the metabolism process and convert the hydrogen sulfide into elemental sulfur and then into sulfuric acid, and H2S is oxidized into elemental sulfur or sulfurous acid under the condition of micro oxygen.
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| CN108659903A (en) * | 2018-04-13 | 2018-10-16 | 南安市创培电子科技有限公司 | A kind of biogas purification method suitable for stalk fermentation technique |
| CN108641918A (en) * | 2018-06-12 | 2018-10-12 | 刘泓江 | Integral type closed-loop ecological circulation agricultural system and its operation process |
| CN108929849A (en) * | 2018-08-13 | 2018-12-04 | 南昌大学 | Triphase multilevel large arch dam organic waste anaerobic fermentation system and its production biogas method |
| CN108998479A (en) * | 2018-08-15 | 2018-12-14 | 山东宝力生物质能源股份有限公司 | A method of biological fuel gas is prepared using pure stalk |
| CN109266689A (en) * | 2018-08-27 | 2019-01-25 | 山东宝力生物质能源股份有限公司 | A kind of method of biomass marsh gas power generation and UTILIZATION OF VESIDUAL HEAT IN |
| CN109628301A (en) * | 2019-01-23 | 2019-04-16 | 乐山力朴能源环保科技有限公司 | A kind of system of anaerobic methane production |
| CN113969235A (en) * | 2020-07-22 | 2022-01-25 | 北京时代桃源环境科技股份有限公司 | Efficient device for preparing biogas through straw anaerobic fermentation and preparation method thereof |
| CN112375666A (en) * | 2020-12-01 | 2021-02-19 | 巢湖市鑫兴农能源环保有限公司 | Straw and excrement mixed fermentation device and process thereof |
| CN112876020A (en) * | 2021-01-25 | 2021-06-01 | 山东省科学院能源研究所 | Community-level energy supply system and method based on wet garbage resource utilization |
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