CN202465466U - Livestock excrement biogas power generating system - Google Patents

Livestock excrement biogas power generating system Download PDF

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Publication number
CN202465466U
CN202465466U CN2012201009870U CN201220100987U CN202465466U CN 202465466 U CN202465466 U CN 202465466U CN 2012201009870 U CN2012201009870 U CN 2012201009870U CN 201220100987 U CN201220100987 U CN 201220100987U CN 202465466 U CN202465466 U CN 202465466U
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China
Prior art keywords
biogas
anaerobic fermentation
fermentation tank
power generating
gas
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Expired - Lifetime
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CN2012201009870U
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Chinese (zh)
Inventor
孙宪法
董泰丽
吴军宁
李蓬青
姚天丰
宫亚斌
李朋
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SHANDONG MINHE BIOLOGICAL TECHNOLOGY Co Ltd
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SHANDONG MINHE BIOLOGICAL TECHNOLOGY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The utility model relates to a livestock excrement biogas power generating system which is characterized by comprising a mixing grit chamber, a hydrolyzing grit chamber, an anaerobic fermentation tank, a biological desulfurizing tower, a gas storage cabinet, a biogas pretreatment system and a biogas generator set which are mutually communicated. The biogas generator set is connected with the anaerobic fermentation tank and the hydrolyzing grit chamber by a waste heat recovery device. By utilizing the biogas power generating system, livestock excrement biogas generating projects are enabled to operate successfully so as to obtain good profit.

Description

The fowl and animal excrement methane power generating system
Technical field
The utility model relates to a kind of fowl and animal excrement methane power generating system.
Background technology
Generally there is following problem in the biogas engineering that with the fowl and animal excrement is raw material: 1, sand cut is high, makes in the anaerobic jar sand setting serious, and the long-term accumulation meeting influences normal aerogenesis; 2, C/N ratio is uneven, makes ammonia-nitrogen content height in the fermented liquid, suppresses the growth of bacterium; 3, the material of fiber-like difficult degradation is many, causes in the anaerobic jar scum silica frost serious.These problems are all restricting with the fowl and animal excrement construction and the development of the marsh gas power generation engineering that is raw material.The investment of large-sized biogas engineering great number in early stage simultaneously makes that the income of project is slower, and the payback period is longer relatively, and project can't realize good economic benefit before this made.
The utility model content
According to above deficiency of the prior art; The technical problem that the utility model will solve is: provide a kind of and can overcome above-mentioned defective; Real practical fowl and animal excrement methane power generating system makes the feces of livestock and poultry marsh gas power generation engineering can smooth operation, obtains good income.
The utility model solves the technical scheme that its technical problem adopted: a kind of fowl and animal excrement methane power generating system; It is characterized in that; Comprise the stirring settling pit and the hydrolysis settling pit that are interconnected, the hydrolysis settling pit is connected to anaerobic fermentation tank through feed pipe, and anaerobic fermentation tank is connected to the biological desulphurization tower through biogas pipeline; The biological desulphurization tower is connected to gas storage holder through biogas pipeline; Gas storage holder is connected to marsh gas preprocessing system through biogas pipeline, and marsh gas preprocessing system is connected to marsh gas power generation unit group through biogas pipeline, and marsh gas power generation unit group is connected to anaerobic fermentation tank and hydrolysis settling pit through waste-heat recovery device.Stir settling pit and can operate the uniform mixing of realizing fowl and animal excrement and water, reach the purpose of regulating input concentration, and can remove the sand of greater particle size in the fowl and animal excrement through the mode that stirs; The hydrolysis settling pit can be established two, and is certain gradient, and mode that can be through acidication is degraded to soluble small organic molecule with the larger molecular organics of indissoluble, and precipitation separation goes out the wherein sand of small particle size simultaneously.
Described anaerobic fermentation tank comprises one-level anaerobic fermentation tank, B grade anaerobic fermentation jar and the secondary fermentation jar that connects successively.The one-level anaerobic fermentation tank is the fermentor tank of direct charging, and the feed liquid in the one-level anaerobic fermentation tank gets into the B grade anaerobic fermentation jar through overflow.Being provided with of two-stage anaerobic jar prolonged the residence time of fermented liquid in jar, improved the thoroughness of fermentation.The secondary fermentation jar plays temporary transient storage natural pond liquid and natural pond slag, collects remaining aerogenesis simultaneously, and natural pond liquid and natural pond slag can be used for making liquid fertilizer and solid-state fertilizer.
Described biological desulphurization tower comprises spray column and the cyclic water tank that is interconnected.Can operate the hydrogen sulfide that removes in the biogas.
Described gas storage holder is connected to marsh gas preprocessing system through biogas pipeline, and gas storage holder is two film waterless gas-holders.Gas storage holder plays the biogas of temporary transient storage after desulfurization.Marsh gas preprocessing system can be operated biogas is carried out the dedusting dehydration, and supercharging, and its device comprises cooling driers, strainer and the roots blower that cooperatively interacts and use.
The marsh gas power generation unit is many biogas generators, can operate and utilize marsh gas power generation.Waste-heat recovery device can be boiler and BW T, can operate to be used for the cooled electric generator group, and reclaim thermal source.
The beneficial effect that the utility model had is: 1, with material preconditioning technique, anaerobic fermentation technology, biological desulfurizing technology, two film waterless gas-holder air storage method, high-level efficiency cogeneration power unit, heat recovery technology organically Combination application in biogas engineering; Having solved effectively is each item technical barrier in the biogas engineering of raw material with the fowl and animal excrement, has realized the annual steady running of large-sized biogas engineering.
2, the power unit waste heat is collected through waste-heat recovery device, is used for the heat supply of hydrolysis and fermentation unit, when guaranteeing ferment effect, has also practiced thrift the energy.
3, natural pond liquid is the product behind the chicken manure fermenting, is rich in to be beneficial to the nutritive elements such as nitrogen phosphorus potassium that crop absorbs, and can when reducing waste discharge, also realize economic return directly as liquid state organic fertilizer.
Reduction of greenhouse gas discharge, registrable application Clean Development Mechanism (CDM) have also been realized when 4, utilizing marsh gas power generation to realize income.The application of CDM project can be engineering and brings extra income, realizes the maximization of economic benefit.
5, the utility model has incorporated the power unit waste heat recovery in utilizing the marsh gas power generation engineering; Fertilizer is made; Three projects such as reduction of greenhouse gas discharge; The pattern that exploration is developed a kind of " heat, electricity, fertile, reduction of greenhouse gas discharge tetrad product " has greatly been widened the channel that fund is taken in, and has increased economic benefit.
Description of drawings
Fig. 1 is the structural representation of fowl and animal excrement methane power generating system;
Among the figure: 1, stir settling pit; 2, hydrolysis settling pit; 3, one-level anaerobic fermentation tank; 4, B grade anaerobic fermentation jar; 5, secondary fermentation jar; 6, biological desulphurization tower; 7, gas storage holder; 8, marsh gas preprocessing system; 9, marsh gas power generation unit; 10, waste-heat recovery device.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done and to further describe:
Fowl and animal excrement methane power generating system as shown in Figure 1; Comprise the stirring settling pit 1 and hydrolysis settling pit 2 that are interconnected; Hydrolysis settling pit 2 is connected to anaerobic fermentation tank through feed pipe, and anaerobic fermentation tank is connected to biological desulphurization tower 6 through biogas pipeline, and biological desulphurization tower 6 is connected to gas storage holder 7 through biogas pipeline; Gas storage holder 7 is connected to marsh gas preprocessing system 8 through biogas pipeline; Marsh gas preprocessing system 8 is connected to marsh gas power generation unit 9 through biogas pipeline, and marsh gas power generation unit 9 is connected to waste-heat recovery device 10 through waste pipe, and waste-heat recovery device 10 is connected to anaerobic fermentation tank and hydrolysis settling pit 2 through steam-pipe.Stir settling pit 1 and can operate the uniform mixing of realizing chicken manure and water, reach the purpose of regulating input concentration, and can remove the sand of greater particle size in the chicken manure through the mode that stirs; Hydrolysis settling pit 2 is provided with two, and is certain gradient, and mode that can be through acidication is degraded to soluble small organic molecule with the larger molecular organics of indissoluble, and precipitation separation goes out the wherein sand of small particle size simultaneously.
Anaerobic fermentation tank comprises one-level anaerobic fermentation tank 3, B grade anaerobic fermentation jar 4 and the secondary fermentation jar 5 that connects successively.One-level anaerobic fermentation tank 3 is the fermentor tank of direct charging, and the feed liquid in the one-level anaerobic fermentation tank 3 gets into B grade anaerobic fermentation jar 4 through overflow.Being provided with of two-stage anaerobic jar prolonged the residence time of fermented liquid in jar, improved the thoroughness of fermentation.Secondary fermentation jar 5 plays a part temporarily to store natural pond liquid and natural pond slag, collects remaining aerogenesis simultaneously.
Biological desulphurization tower 6 comprises spray column and the cyclic water tank that is interconnected, and can operate the hydrogen sulfide that removes in the biogas.
Gas storage holder 7 connects marsh gas preprocessing system 8, and gas storage holder 7 is two film waterless gas-holders, plays temporarily to store the biogas after desulfurization.Marsh gas preprocessing system 8 can be operated the biogas dedusting of dewatering, and supercharging, and its device comprises cooling driers, strainer and the roots blower that cooperatively interacts and use.Power unit 9 is many biogas generators, can operate and utilize marsh gas power generation, and electric energy is incorporated national grid into.Waste-heat recovery device 10 is opened and is boiler and BW T, is used to cool off the marsh gas power generation unit, and reclaims thermal source.
Get into the anaerobic fermentation tank fermentation after fowl and animal excrement is handled through the desanding of stirring settling pit 1 and hydrolysis settling pit 2 and produce biogas; The biogas that produces gets into biological desulphurization tower 6 and removes hydrogen sulfide; Biogas after the desulfurization carries out the dedusting dehydration at the gas storage holder 7 temporary transient back entering marsh gas preprocessing systems 8 that store, and the biogas after the dedusting dehydration gets into 9 groups of biogas gas electricity generators and is used for generating.The natural pond liquid that anaerobically fermenting produces is introduced into secondary fermentation jar 5, after storage for some time, processes liquid state and solid organic fertilizer respectively, promotes economic benefit to greatest extent.
With the design unit capacity is that the marsh gas power generation engineering of 3MW is an example, can day handle 300~500 tons of chicken manures, daily output biogas 30,000 m 3, 60,000 degree that can generate electricity day, electric energy is incorporated national grid into.The UTILIZATION OF VESIDUAL HEAT IN waste-heat recovery device of marsh gas power generation unit is recycled, and has guaranteed acidication bacterium and the needed temperature of anerobes survival and reproduction, has reached the effect of stablizing aerogenesis throughout the year.In addition, this engineering can reduce the CO2 equivalent of 80,000 tons of greenhouse gas emissions every year, after the CDM project application is succeeded in registration, has obtained considerable compensation.

Claims (3)

1. fowl and animal excrement methane power generating system; It is characterized in that; Comprise the stirring settling pit and the hydrolysis settling pit that are interconnected, the hydrolysis settling pit is connected to anaerobic fermentation tank through feed pipe, and anaerobic fermentation tank is connected to the biological desulphurization tower through biogas pipeline; The biological desulphurization tower is connected to gas storage holder through biogas pipeline; Gas storage holder is connected to marsh gas preprocessing system through biogas pipeline, and marsh gas preprocessing system is connected to marsh gas power generation unit group through biogas pipeline, and marsh gas power generation unit group is connected to anaerobic fermentation tank and hydrolysis settling pit through waste-heat recovery device.
2. fowl and animal excrement methane power generating system according to claim 1 is characterized in that, described anaerobic fermentation tank comprises one-level anaerobic fermentation tank, B grade anaerobic fermentation jar and the secondary fermentation jar that connects successively.
3. fowl and animal excrement methane power generating system according to claim 1; It is characterized in that; Described biological desulphurization tower comprises spray column and the cyclic water tank that is interconnected, and described gas storage holder connects marsh gas preprocessing system through biogas pipeline, and gas storage holder is two film waterless gas-holders.
CN2012201009870U 2012-03-17 2012-03-17 Livestock excrement biogas power generating system Expired - Lifetime CN202465466U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102583930A (en) * 2012-03-17 2012-07-18 山东民和生物科技有限公司 Livestock excrement biogas generation method and livestock excrement biogas generation system
CN103145308A (en) * 2013-03-05 2013-06-12 安徽禹王养殖有限公司 Method for producing biogas in large biogas project
CN103435154A (en) * 2013-09-02 2013-12-11 潮州市建成农业综合开发有限公司 Method for recycling contaminants of large-scale livestock and poultry farm
CN104705196A (en) * 2015-04-08 2015-06-17 安徽省强家庄生态农业有限公司 Ecological cycle pig raising system
CN107022473A (en) * 2017-05-27 2017-08-08 合肥市禾兴生态养殖科技有限公司 A kind of circulatory system for maintaining Agro-ecology to balance

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102583930A (en) * 2012-03-17 2012-07-18 山东民和生物科技有限公司 Livestock excrement biogas generation method and livestock excrement biogas generation system
CN103145308A (en) * 2013-03-05 2013-06-12 安徽禹王养殖有限公司 Method for producing biogas in large biogas project
CN103435154A (en) * 2013-09-02 2013-12-11 潮州市建成农业综合开发有限公司 Method for recycling contaminants of large-scale livestock and poultry farm
CN104705196A (en) * 2015-04-08 2015-06-17 安徽省强家庄生态农业有限公司 Ecological cycle pig raising system
CN107022473A (en) * 2017-05-27 2017-08-08 合肥市禾兴生态养殖科技有限公司 A kind of circulatory system for maintaining Agro-ecology to balance

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Granted publication date: 20121003