CN102604816B - Integrated solid-material two-phase methane fermentation reactor and method for preparing methane by using same - Google Patents
Integrated solid-material two-phase methane fermentation reactor and method for preparing methane by using same Download PDFInfo
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- CN102604816B CN102604816B CN201110024750.9A CN201110024750A CN102604816B CN 102604816 B CN102604816 B CN 102604816B CN 201110024750 A CN201110024750 A CN 201110024750A CN 102604816 B CN102604816 B CN 102604816B
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Abstract
The invention relates to an integrated solid-material two-phase methane fermentation reactor and a method for preparing methane by using the fermentation reactor. The fermentation reactor comprises a reactor body, a stirrer, a temperature increasing coil pipe, a double-membrane methane storage device, an acidifying area feeding pipe, a methane-producing area feeding pipe and a discharging pipe; and the reactor body is in an inner-outer double-layer structure, wherein the outer layer is a hydrolyzing and acidifying area, and the inner layer is a methane-producing area. The material enters the acidifying area through the hydrolyzing and acidifying area feeding pipe along the tangential direction of the reactor body and overflows into the methane-producing area from the top of the acidifying are, and the fermented material overflows out of the reactor body from the top of the methane-producing area. The fermentation reactor can improve the heat preservation efficiency effectively and increase the yield of the methane and has high operation load, and the overall stopping time of the system of the fermentation reactor is shorter than that of the system of the traditional methane fermentation reaction device.
Description
Technical field
The present invention relates to biogas fermentation reaction unit field, particularly relate to a kind of integrated solid materials two-phase biogas fermentation reactor and use this reactor to prepare the method for biogas.
Background technology
In recent years, the pollution of the organic solid castoffs such as stalk, organic waste, agricultural byproducts is subject to people's attention gradually, and conventional treatment process such as landfill, burning, compost etc. all exist some problems.In fact, these component of refuse above, based on organic constituent, have higher biodegradability, adopt anaerobic digestion techniques, while process organic waste, reclaim biogas as biomass energy, and tunning can make fertilizer after treatment, has stronger feasibility.
Conventional anaerobic reaction device is mainly divided into two classes, i.e. homogenous anaerobic digestion and TPAD.
The type of homogenous anaerobic digestion reaction device mainly contains complete hybrid anaerobic reactor (CSTR), upflow solids reactor (USR), anaerobic filter (AF), and the several types such as upflow anaerobic sludge blanket process (UASB) reactor, the difference of above reaction unit is mainly the aspects such as alr mode, feeding manner, sludge retention mode.Homogenous anaerobic digestion reactor obtains ripe application in feces of livestock and poultry biogas engineering.
Be different from the fermenting process of feces of livestock and poultry, the reaction of single step fermentation methane phase can not be carried out as solid substancess such as stalk, organic waste, agricultural byproducts, relatively easy acidifying during fermentation.Can adopt solid materials TPAD technique, the fermentation of solid substances be decomposed into and produce acid and methane phase two processes, make the biogas fermentation of solid substances become possibility, the operational mode being simultaneously conducive to different steps reactor controls.Conventional TPAD reaction unit focuses mostly in the laboratory study stage, reactor types is the reactor of connection two different volumes, realizes acidifying must be separated with methanogenic phase respectively by the different parameter such as the residence time, different temperature, pH of control.But, it is comparatively large that two block response device floor spaces are set respectively, and due to the exposed surface area of two block response devices excessive, easily cause scattering and disappearing of amount of heat.
As can be seen from above-mentioned prior art, the ripe homogenous anaerobic digestion techniques be applied in feces of livestock and poultry biogas engineering, when solid substancess such as Treating straw, organic waste, agricultural byproducts, the overall residence time is longer, and owing to easily there is acidification phenomenon, cause factor of created gase on the low side.And there is floor space greatly in traditional TPAD, the problems such as insulating efficiency is not high.
Summary of the invention
The invention provides a kind of integrated solid materials two-phase biogas fermentation reactor, object effectively improves system insulating efficiency, operating load, shortens the entire system residence time, increases biogas output.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of integrated solid materials two-phase biogas fermentation reactor, comprise reactor body, agitator, heat coil pipe, dual-membrane type accumulator unit, acidification region feed-pipe, methane phase district feed-pipe, discharge nozzle, described reactor body is interior outer double-layer structure, skin is acidication district, internal layer is methane phase district, the interval volume of ectonexine is different, material squeezes into acidication district by acidification region feed-pipe along reactor tangential direction, and enter methane phase district from the methane phase district feed-pipe overflow at top, acidication district, heat the inwall that coil pipe is arranged on methane phase district, heat coil pipe inside for circulating hot water, in acidication district and methane phase district, the agitator that can promote up and down is set respectively, dual-membrane type accumulator unit is arranged on fermentation reactor top.
Agitator can adopt existing diving mixer, and the circulating hot water heating coil pipe inside is mainly used in the temperature keeping methane phase district, and its heat distributed is for maintaining the temperature of outside acidification region.
Present invention also offers a kind of method using this integrated solid materials two-phase biogas fermentation reactor to prepare biogas, material tangentially squeezes into acidication district continuously under water pump effect, the material in acidication district is made to keep rotating, material is under the effect of anaerobion, being converted into small molecules is main organism, wherein between acidification region, charging number of times is 2 times/day, the respective numbers at every turn entering material is determined according to the residence time of design, the residence time is 2-4 days, temperature is 25-35 DEG C, pH value is 5.5-6, stirring frequency is 5-10r/min, material after acidifying enters methane phase district from the methane phase district feed-pipe overflow at top, acidication district, the biogas be converted into based on methane is continued in methane phase district, wherein the methane phase district residence time is 15-20 days, temperature is 35 DEG C-55 DEG C, pH value is 6-8, stirring frequency is 5-10r/min, the biogas storage produced is in the dual-membrane type accumulator unit of top, and export subsequent disposal to through pipeline.
The invention has the beneficial effects as follows:
The present invention mainly adopts the know-why of TPAD, two block response devices are structurally merged into one, only utilize a set of heat-insulation system, the temperature of acidifying phase mainly relies on the heat radiation of methanogenic phase, the heat utilization rate of the system that improves of such high degree.By rationally arranging the agitator of type selecting, achieving the less energy-consumption running of system, and can be used for the fragmentation of top crust.
To sum up, this cover reaction unit considers the link such as system insulation, operating load, the residence time, floor space and biogas output in biogas fermentation, integrated artistic flow process is simple, embody energy-efficient environmental protection concept, not only compensate for the deficiency existed in biogas fermentation, also for certain technical foundation has been established in Industry Promotion.
Accompanying drawing explanation
Fig. 1 is the structure vertical view of reaction unit of the present invention
Fig. 2 is the section of structure of reaction unit of the present invention
1 agitator 2 dual-membrane type accumulator unit 3 heats coil pipe 4 acidification region feed-pipe 5 methane phase district feed-pipe
6 methane phase district 9 of discharge nozzle 7 acidication district 8 overflow weir 10 hot water inlet/outlet pipe 11 agitator stationary shaft
12 Surgery therapy
Embodiment
One of the present invention integrated solid materials two-phase biogas fermentation reactor.By reference to the accompanying drawings specific embodiments of the invention are described, as can be seen from Figure:
Described fermentation reactor by reactor body, agitator 1, heat coil pipe 3, dual-membrane type accumulator unit 2, acidification region feed-pipe 4, methane phase district feed-pipe 5, discharge nozzle 6 etc. and form, main body reactor is interior outer double-layer structure, skin is acidication district 7, and internal layer is methane phase district 8.
Described reactor is cylindric, by the difference of inside and outside interval volume, wherein the volume in acidication district is the 1/3-1/5 of methane phase district volume, first initial material enters acidication district, the material of acidification region is after reaction a couple of days, along with adding continuously of subsequent material, the material having completed acidification reaction enters methane phase district by overflow, thus realizes the separation that fermenting process produces acid phase and methanogenic phase.Usually, acidication district, the residence time is 2-4d, and temperature is 25 DEG C-35 DEG C, methane phase district, and the residence time is 15-20d, and temperature is 35 DEG C-55 DEG C.
Be used in the process of biogas fermentation at described fermentation reactor, material squeezes into acidification region 7 by acidication district feed-pipe 4 along reactor tangential direction, and enter methane phase district 8 from acidication district 7 top overflow, in acidication district 7 and methane phase district 8, two mechanical stirrers that can promote up and down 1 are set respectively, two agitators in each region are equidirectional setting, rotate along fixed-direction for maintaining reaction zone material, simultaneously, described mechanical stirring device can promote up and down, its height controls by electric block, both the Homogeneous phase mixing of different heights material can have been realized, also can be used for the material skull smashing top.
Material is under the effect of anaerobion, being converted into small molecules in described acidication district 7 is main organism, its product continues the biogas be converted into based on methane in methane phase district 8, and described biogas storage in top dual-membrane type accumulator unit 2, and exports aftertreatment device to through pipeline.
By above-mentioned corollary apparatus structure, marsh gas fermentation processes can be divided into and produce acid phase and methanogenic phase, and different measure of control are adopted to different microorganisms, while substantially not increasing system footprint area, fully improve reactor gas producing efficiency, improve system cloud gray model security, agitator both can realize the abundant stirring to material simultaneously, can be used for again the fragmentation of reactor head crust, can overhaul in time when breaking down, thus the high-efficient operation of accelerating system.
Claims (2)
1. an integrated solid materials two-phase biogas fermentation reactor, comprise cylindric reactor body, agitator (1), dual-membrane type accumulator unit (2), heat coil pipe (3), acidification region feed-pipe (4), methane phase district feed-pipe (5), discharge nozzle (6), it is characterized in that: described reactor body is interior outer double-layer structure, skin is acidication district (7), internal layer is methane phase district (8), the interval volume of ectonexine is different, material squeezes into acidication district (7) by acidification region feed-pipe (4) along reactor tangential direction, and enter methane phase district (8) from methane phase district feed-pipe (5) overflow at acidication district (7) top, heat the inwall that coil pipe (3) is arranged on methane phase district (8), heat coil pipe (3) inside for circulating hot water, in acidication district (7) and methane phase district (8), the agitator (1) that can promote up and down is set respectively, dual-membrane type accumulator unit (2) is arranged on fermentation reactor top.
2. the method using integrated solid materials two-phase biogas fermentation reactor as claimed in claim 1 to prepare biogas, it is characterized in that: material tangentially squeezes into acidication district (7) continuously under water pump effect, the material in acidication district (7) is made to keep rotating, material is under the effect of anaerobion, being converted into small molecules is main organism, wherein acidication district (7) charging number of times is 2 times/day, the residence time is 2-4 days, temperature is 25-35 DEG C, pH value is 5.5-6, stirring frequency is 5-10r/min, material after acidifying enters methane phase district (8) from methane phase district feed-pipe (5) overflow at acidication district (7) top, the biogas be converted into based on methane is continued in methane phase district (8), wherein methane phase district is 15-20 days (8) residence time, temperature is 35 DEG C-55 DEG C, pH value is 6-8, stirring frequency is 5-10r/min, the biogas storage produced is in top dual-membrane type accumulator unit (2), and export subsequent disposal to through pipeline.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102816692A (en) * | 2012-09-13 | 2012-12-12 | 黑龙江省科学院科技孵化中心 | Anaerobic fermentation reactor for combined use |
| CN102827761B (en) * | 2012-09-25 | 2014-01-22 | 河南农业大学 | Dry-wet-coupled marsh gas fermentation device |
| CN108179103A (en) * | 2018-01-19 | 2018-06-19 | 清华大学 | A kind of bicyclic two-phase integrated anaerobic reactor of nesting |
| CN109337800A (en) * | 2018-12-05 | 2019-02-15 | 北京天极视讯科技发展有限公司 | A kind of hydrolysis acidification and anaerobic fermentation integrated device |
| CN109517730A (en) * | 2018-12-29 | 2019-03-26 | 启迪桑德环境资源股份有限公司 | A kind of half dry type diphasic anaerobic fermentor |
| CN110342767B (en) * | 2019-07-23 | 2024-06-18 | 天津大学 | Anaerobic digestion stirring system for high-solid sludge |
| CN112678977A (en) * | 2020-12-08 | 2021-04-20 | 山西省工业设备安装集团有限公司 | Power generation system and method for comprehensive utilization of town sewage |
| CN113501581A (en) * | 2021-07-28 | 2021-10-15 | 江苏南大华兴环保科技股份公司 | Step steady flow type anaerobic reaction system |
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| CN1244850A (en) * | 1997-10-22 | 2000-02-16 | 莱因哈特·冯努登舍尔德 | Biogas facility |
| WO2001009280A2 (en) * | 1999-07-30 | 2001-02-08 | Bioelex Corporation | Two-phase type methane fermentation reactor |
| CN1974752A (en) * | 2006-12-13 | 2007-06-06 | 辽宁省农业科学院生命科学中心 | Infegrated double cavity marsh gas fermenting system |
| CN101037288A (en) * | 2007-02-14 | 2007-09-19 | 杭州能源环境工程有限公司 | Gas generation-storage integral anaerobic zymosis device |
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- 2011-01-24 CN CN201110024750.9A patent/CN102604816B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1244850A (en) * | 1997-10-22 | 2000-02-16 | 莱因哈特·冯努登舍尔德 | Biogas facility |
| WO2001009280A2 (en) * | 1999-07-30 | 2001-02-08 | Bioelex Corporation | Two-phase type methane fermentation reactor |
| CN1974752A (en) * | 2006-12-13 | 2007-06-06 | 辽宁省农业科学院生命科学中心 | Infegrated double cavity marsh gas fermenting system |
| CN101037288A (en) * | 2007-02-14 | 2007-09-19 | 杭州能源环境工程有限公司 | Gas generation-storage integral anaerobic zymosis device |
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