CN105820943A - Multistage gas-liquid combined stirring Venturi tube-CSTR reactor - Google Patents

Multistage gas-liquid combined stirring Venturi tube-CSTR reactor Download PDF

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Publication number
CN105820943A
CN105820943A CN201510285452.3A CN201510285452A CN105820943A CN 105820943 A CN105820943 A CN 105820943A CN 201510285452 A CN201510285452 A CN 201510285452A CN 105820943 A CN105820943 A CN 105820943A
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China
Prior art keywords
stirring
venturi tube
liquid
biogas
fermentation
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CN201510285452.3A
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CN105820943B (en
Inventor
张无敌
刘健峰
尹芳
赵兴玲
田光亮
杨斌
柳静
王昌梅
杨红
刘士清
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Yunnan Normal University
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Yunnan Normal University
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/18External loop; Means for reintroduction of fermented biomass or liquid percolate
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/48Automatic or computerized control
    • 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 invention discloses a multistage gas-liquid combined stirring Venturi tube-CSTR reactor. The reactor comprises a continuous stirring full-hybrid anaerobic reactor, a Venturi tube, and a multistage external circulation pipeline. According to the invention, the Venturi tube is used for realizing the gas-liquid combined stirring effect, a pump is used for absorbing a broth, then is injected by the Venturi tube, the stirring effect is formed at an upper part of an injection position of biogas, incrustation effect of an upper layer of the broth can be prevented, the stirring effect is formed at the lower part of the injection position of liquid, according to different condition during a fermentation process, stirring with different forms and different degrees are carried out on the fermented raw materials, waterpower detention time is shortened, processing efficiency of the reactor is greatly increased, automation control equipment and a speed changer are arranged on the reactor, timing automatic feeding and automatic stirring are realized, according to different condition during the fermentation process, stirring with different forms and different degrees are carried out on the fermented raw materials.

Description

A kind of multi-stage gas-liquid combines stirring Venturi tube-CSTR reaction unit
Technical field
The present invention relates to a kind of multi-stage gas-liquid based on Venturi tube and CSTR full mixed anaerobic reaction device associating stirring system, belong to biogas fermentation equipment technology field.
Background technology
Biogas fermentation is a kind of process organic waste, it is achieved the effective way of the recycling of garbage.By marsh gas fermentation processes, clean energy resource biogas can be produced, it is achieved the recycling of organic waste, biogas fermentation has become as the important tie of development of agricultural circulation economy pattern by Organic substance through the decomposition of microorganism.In anaerobic digestion process, the application of mix and blend technology, the problem such as can efficiently solve that the mass transfer caused because microorganism and labile organic compound cannot actual contacts is difficult and physico-chemical and biological properties is uneven, thus improve the performance of reactor and improve the gas production rate of anaerobic digestion.
The existing alr mode in marsh gas fermentation process has manual stirring, mechanical agitation, Gas Stirring, liquid agitation etc., but all there is certain problem in these alr modes: 1) manual stirring: it is used in laboratory, installation for fermenting volume is less, rock fermentation flask by timing, reach to stir the purpose of mixed fermentation liquid.But, for straw raw material and the fermentation of high concentration, manual stirring does not reaches the purpose of mixing, and the hardening of fermentation surface scum, hinders collecting methane simultaneously;2) mechanical agitation: mechanical agitation is to use the machinery of various installation forms, makes material reach a kind of alr mode of admixture by various forms of mechanical movements.This kind of alr mode can produce powerful shear action, can smash digestion raw material, beneficially high-viscosity material mixing by the rotation of stirring vane, be mainly used in laboratory ferment device and biogas engineering.But, owing to fermentation time is long, agitating device needs long-term operating, particularly in biogas engineering, mechanical stirring device long period of soaking, in fermentation liquid, easily causes the corrosion of device, after corrosion, need to change agitating device, while changing, need to open installation for fermenting, now easily causing fermentation tank gas leakage, affect the properly functioning of biogas fermentation, this kind of mode energy consumption is big simultaneously, cost is high, and operation is complicated and is unfavorable for aerogenesis;3) liquid agitation: liquid agitation typically utilizes the pump produced liquid of operating to flow the stirring to material, utilize fermentation liquid itself, take fermentation liquid by pumping, then by its percussion, break fermentation liquid surface crust, realize fermentation broth agitation, it is that a kind of energy consumption is low, simple to operate, it is ensured that the alr mode of tank body sealing, but liquid agitation can cause the increase of local pressure in pressure or fermentor, is unfavorable for fermentation;4) Gas Stirring: Gas Stirring is through bubble motion in material and realizes the purpose to material stirring, in biogas fermentation, Gas Stirring refers mainly to biogas recirculation stirring, marsh-gas fermentation tank is entered through all kinds of distributors after the compressed pressurization of biogas, in tank, raw material forms circulation under the promotion of biogas, this alr mode requires the highest for the air-tightness of device, it is difficult to be utilized in engineering.
Summary of the invention
Present invention is generally directed to the problems referred to above, it is provided that the anaerobic reaction device that in a kind of tank, equipment is few, simple in construction, working drawing review easy, mixing effect is good, efficiency is high, running device expense is low.
For achieving the above object, the present invention takes following technical proposals: a kind of multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, outside at full mixed anaerobic reaction device (5) installs the Multistage external circulating pipeline (2) containing Venturi tube (1), during the fermentation, circulating pump (6) can be passed through by fermentation liquid from Ax(wherein x=1,2,3 N, N are determined by the stirring progression of reactor) sucking-off, by Venturi tube (1) and external circulation line (2), then from BxInject, biogas forms stirring action on the top of entry position, and the effect preventing fermentation liquid upper strata from crusting can be reached, liquid then forms stirring action in the bottom of entry position, wherein the bottom one-level of biogas slurry outlet should be higher than that activated sludge layer, on the other hand equipped with automation control appliance and variator, it is achieved cycle-time feeder, automatic stirring, and according to the different situations of sweat, fermentation raw material can be carried out multi-form, stirring in various degree.
It is the bottom one-level that circulating pump (6) is arranged on water side further that described multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, biogas slurry, due to action of gravity, can flow at pump voluntarily, improves enough biogas slurries for pump, pump can be made preferably to work, and be easy to install and maintain.
It is the bottom one-level that circulating pump (6) is arranged on water side further that described multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, biogas slurry, due to action of gravity, can flow at pump voluntarily, improves enough biogas slurries for pump, pump can be made preferably to work, and be easy to install and maintain.
It is Duan Jiayi the biogas switch of air inlet in Venturi tube (1) further that described multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, can effectively control the air inflow of biogas, thus control the degree of Gas Stirring.
Described multi-stage gas-liquid is combined the biogas slurry port of export that stirring Venturi tube CSTR reaction unit is external circulation line (2) further and be should be greater than the pipe diameter of biogas slurry entrance point to the pipe diameter of Venturi tube (1), not only can guarantee that Venturi tube has enough pressure, and may insure that biogas slurry jet enters reactor.
It is to inject port in biogas slurry to install a hydraulic ejector further that described multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, strengthens mixing effect.
Described multi-stage gas-liquid is combined stirring Venturi tube CSTR reaction unit and is equipped with automation control appliance and variator further, realize cycle-time feeder, automatic stirring, and according to the different situations of sweat, fermentation raw material can be carried out multi-form, stirring in various degree.
The beneficial effect that the present invention produces has: achieve multistage dynamic hydraulic combined stirring, can be according to the different situations of sweat, fermentation raw material is carried out multi-form, stirring in various degree, solve the phenomenon of liquid level crust, ensure that fermentation is complete, aerogenesis is uniform, thus improve gas producing efficiency, it is provided that the anaerobic reaction device that in a kind of tank, equipment is few, simple in construction, working drawing review easy, mixing effect is good, efficiency is high, running device expense is low.
Accompanying drawing illustrates:
Fig. 1 is present configuration schematic diagram.
Fig. 2 is present configuration schematic diagram.
Symbol description:
1. Venturi tube, 2. Multistage external circulating pipeline, 3. gas outlet, 4. water seal discharging opening, 5.CSTR reactor, 6. biogas slurry circulating pump, 7. charging aperture, 8. sewage draining exit, 9. fermentation liquid import, 10. biogas import, 11. fermentation liquids outlets, Ax be fermentation liquid gate out switch, Bx be fermentation liquid inlet switch.
Detailed description of the invention:
The invention will be further described with example below in conjunction with the accompanying drawings:
As it is shown in figure 1, a kind of multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, continuous stirring full mixed anaerobic reaction device 5 outside the Multistage external circulating pipeline 2 containing Venturi tube 1 is installed, during the fermentation, can by circulating pump 6 by fermentation liquid from Ax(wherein x=1,2,3 N, N are determined by the stirring progression of reactor) sucking-off, by Venturi tube 1 and external circulation line 2, then from BxInject, biogas forms stirring action on the top of entry position, and the effect preventing fermentation liquid upper strata from crusting can be reached, liquid then forms stirring action in the bottom of entry position, wherein the bottom one-level of biogas slurry outlet should be higher than that activated sludge layer, on the other hand equipped with automation control appliance and variator, it is achieved cycle-time feeder, automatic stirring, and according to the different situations of sweat, fermentation raw material can be carried out multi-form, stirring in various degree.
Preferably, circulating pump 6 is arranged on the bottom one-level of water side, and biogas slurry, due to action of gravity, can flow at pump voluntarily, improves enough biogas slurries for pump, pump can be made preferably to work, and be easy to install and maintain.
Preferably, installing Venturi tube 1 on external circulation line 2, the air inlet 10 of Venturi tube 1 is connected with gas holder, utilizes the principle of Venturi tube to reach the effect of gas-liquid agitation and broken shell.
Preferably, at Duan Jiayi biogas switch of air inlet of Venturi tube 1, can effectively control the air inflow of biogas, thus control the degree of Gas Stirring.
Preferably, the pipe diameter of the biogas slurry port of export of external circulation line 2 to Venturi tube 1 should be greater than the pipe diameter of biogas slurry entrance point, not only can guarantee that Venturi tube has enough pressure, and may insure that biogas slurry jet enters reactor.
Preferably, inject port in biogas slurry and one hydraulic ejector is installed, strengthen mixing effect.
Preferably, this multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit equipped with automation control appliance and variator, realize cycle-time feeder, automatic stirring, and according to the different situations of sweat, fermentation raw material can be carried out multi-form, stirring in various degree.
Present invention achieves multistage dynamic hydraulic combined stirring, can be according to the different situations of sweat, fermentation raw material is carried out multi-form, stirring in various degree, solve the phenomenon of liquid level crust, ensure that fermentation is complete, aerogenesis is uniform, thus improve gas producing efficiency, it is provided that the anaerobic reaction device that in a kind of tank, equipment is few, simple in construction, working drawing review easy, mixing effect is good, efficiency is high, running device expense is low.
Describing the present invention the most by way of example, but the invention is not restricted to above-mentioned specific embodiment, all any change or modification done based on the present invention belong to the scope of protection of present invention.

Claims (8)

1. a multi-stage gas-liquid combines stirring Venturi tube CSTR reaction unit, it is characterized in that: outside in continuous stirring full mixed anaerobic reaction device (5) installs the Multistage external circulating pipeline (2) containing Venturi tube (1), during the fermentation, circulating pump (6) can be passed through by fermentation liquid from Ax(wherein x=1,2,3 N, N are determined by the stirring progression of reactor) sucking-off, by Venturi tube (1) and external circulation line (2), then from BxInject, biogas forms stirring action on the top of entry position, and the effect preventing fermentation liquid upper strata from crusting can be reached, liquid forms stirring action in the bottom of entry position, wherein the bottom one-level of biogas slurry outlet should be higher than that activated sludge layer, and on the other hand this device is equipped with automation control appliance and variator, it is achieved cycle-time feeder, automatic stirring, and according to the different situations of sweat, fermentation raw material can be carried out multi-form, stirring in various degree.
Multi-stage gas-liquid the most according to claim 1 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: Multistage external circulating pipeline (2) is installed in the side of CSTR reactor (5), it is interconnected between at different levels, the progression of circulation only need to be controlled by switch, and just can realize multiple stage circulation, to reach the purpose of low power consuming, low cost by a circulating pump (6).
Multi-stage gas-liquid the most according to claim 1 and 2 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: circulating pump (6) is arranged on the bottom one-level of water side, biogas slurry is due to action of gravity, can flow at pump voluntarily, enough biogas slurries are provided for pump, pump can be made preferably to work, and be easy to install and maintain.
Multi-stage gas-liquid the most according to claim 1 and 2 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: Venturi tube (1) is installed on external circulation line (2), the air inlet of Venturi tube (1) is connected with gas holder, utilizes the principle of Venturi tube to reach the effect of gas-liquid agitation and broken shell.
Multi-stage gas-liquid the most according to claim 4 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: the inlet port in Venturi tube (1) adds a biogas switch, can effectively control the air inflow of biogas, thus control the degree of Gas Stirring.
Multi-stage gas-liquid the most according to claim 1 and 2 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: the pipe diameter of the biogas slurry port of export of external circulation line (2) to Venturi tube (1) should be greater than the pipe diameter of biogas slurry entrance point, not only can guarantee that Venturi tube has enough pressure, and may insure that biogas slurry jet enters reactor.
Multi-stage gas-liquid the most according to claim 6 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: installs a hydraulic ejector at biogas slurry entrance point, strengthens mixing effect.
Multi-stage gas-liquid the most according to claim 1 combines stirring Venturi tube CSTR reaction unit, it is characterized in that: this device is equipped with automation control appliance and variator, realize cycle-time feeder, automatic stirring, and according to the different situations of sweat, fermentation raw material can be carried out multi-form, stirring in various degree.
CN201510285452.3A 2015-05-29 2015-05-29 A kind of multi-stage gas-liquid joint stirring Venturi tube-CSTR reaction units Expired - Fee Related CN105820943B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109289713A (en) * 2018-10-18 2019-02-01 辽宁石油化工大学 A kind of mosquito-repellent incense coil pipe isothermal reactor and application method
CN111701561A (en) * 2020-07-31 2020-09-25 中国石油化工股份有限公司 Multi-stage variable speed rotating packed tower and extraction method
CN112481106A (en) * 2020-12-02 2021-03-12 通化县东明农牧业发展(集团)有限公司 Straw anaerobic digester material mixing system

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CN102154372A (en) * 2010-12-20 2011-08-17 昆明理工大学 Method for producing methane by means of fermentation with jet mixing technology
CN102502960A (en) * 2011-12-26 2012-06-20 陕西清源环境实业有限公司 Gas-liquid blending and stirring device of sewage-sludge complete mixing type anaerobic fermentation tank and treatment method thereof
CN202786235U (en) * 2012-09-28 2013-03-13 云南师范大学 Circulation biogas slurry pipeline for biogas slurry stirring and hull breaking of anaerobic reactor
CN202953832U (en) * 2012-11-08 2013-05-29 广西华纳新材料科技有限公司 Venturi tube reactor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101182454A (en) * 2007-11-05 2008-05-21 程龙 External-internal double-cycling bioreactor
CN102154372A (en) * 2010-12-20 2011-08-17 昆明理工大学 Method for producing methane by means of fermentation with jet mixing technology
CN102502960A (en) * 2011-12-26 2012-06-20 陕西清源环境实业有限公司 Gas-liquid blending and stirring device of sewage-sludge complete mixing type anaerobic fermentation tank and treatment method thereof
CN202786235U (en) * 2012-09-28 2013-03-13 云南师范大学 Circulation biogas slurry pipeline for biogas slurry stirring and hull breaking of anaerobic reactor
CN202953832U (en) * 2012-11-08 2013-05-29 广西华纳新材料科技有限公司 Venturi tube reactor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109289713A (en) * 2018-10-18 2019-02-01 辽宁石油化工大学 A kind of mosquito-repellent incense coil pipe isothermal reactor and application method
CN111701561A (en) * 2020-07-31 2020-09-25 中国石油化工股份有限公司 Multi-stage variable speed rotating packed tower and extraction method
CN112481106A (en) * 2020-12-02 2021-03-12 通化县东明农牧业发展(集团)有限公司 Straw anaerobic digester material mixing system
CN112481106B (en) * 2020-12-02 2021-07-30 通化县东明农牧业发展(集团)有限公司 Straw anaerobic digester material mixing system

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