CN111471584A - Micro-aerobic biological pretreatment device for straw - Google Patents

Micro-aerobic biological pretreatment device for straw Download PDF

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Publication number
CN111471584A
CN111471584A CN202010400407.9A CN202010400407A CN111471584A CN 111471584 A CN111471584 A CN 111471584A CN 202010400407 A CN202010400407 A CN 202010400407A CN 111471584 A CN111471584 A CN 111471584A
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reaction chamber
straw
flora
biological pretreatment
pretreatment
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杨帅
汪楚乔
张学仕
盛况
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East China Jiaotong University
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杨帅
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
    • C12M41/34—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS 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
    • C12M45/00—Means for pre-treatment of biological substances
    • C12M45/02—Means for pre-treatment of biological substances by mechanical forces; Stirring; Trituration; Comminuting

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Abstract

The invention discloses a micro-aerobic biological pretreatment device for straws, which comprises a reaction chamber A and a reaction chamber B, wherein the left end and the right end of the top in the reaction chamber A are respectively provided with a feed inlet and a liquid inlet.

Description

Micro-aerobic biological pretreatment device for straw
Technical Field
The invention belongs to the technical field of straw treatment, and particularly relates to a micro-aerobic biological pretreatment device for straws.
Background
China is a big agricultural country, a large amount of straws are produced in the agricultural production process, grain crops such as rice and wheat and agricultural byproducts remained after seeds of economic crops such as cotton and tobacco are harvested are generally produced, and the straws are a useful biomass resource due to high organic matter content (VS/TS is in the range of 84-95%) and low water content after air drying. The total amount of various straws produced in China per year can reach 6.5 hundred million tons, the main categories are corn straws of-2 hundred million tons/year, rice straws of-1.97 hundred million tons/year and wheat straws of-1.3 hundred million tons/year, and the standard coal amount is reduced to about 3.53 hundred million tons/year.
However, with the change of urbanization process, new rural construction and agricultural production mode in recent years, the labor force of young and old people in rural areas is greatly reduced, clean fuels such as natural gas are popularized in rural areas, and modern agricultural machinery is popularized in agricultural production, which all impact the traditional straw collecting and transporting system and utilization mode, further cause the straws to be randomly discarded and combusted in the farmland in an uncontrolled manner, generate environmental and social problems such as air pollution, fire, traffic accidents and the like, and the wastes not only cause great waste of resources but also have serious influence on the environment if being improperly disposed.
Therefore, how to effectively utilize crop straws as resources is a hot problem concerned in the field of environment and energy
Disclosure of Invention
In order to solve the problems, the invention provides a micro-aerobic biological pretreatment device for straws, which comprises a reaction chamber A and a reaction chamber B, wherein the left end and the right end of the top in the reaction chamber A are respectively provided with a feed inlet and a liquid inlet, the middle position of the reaction chamber A is provided with a motor, the motor is connected with a stirring pulverizer, the stirring pulverizer is arranged in the reaction chamber A, an oxygen meter is arranged above the side wall of one end of the reaction chamber A, a discharge outlet is arranged below the reaction chamber A, and the other end of the reaction chamber is connected with an air pump through a conduit;
the raw materials after stirring and crushing from the discharge port of the reaction chamber A can be continuously reacted through the detachable conduit connected to the feed port of the reaction chamber B, and the feed port, the discharge port and the liquid inlet of the reaction chamber B are identical to the structure of the reaction chamber A.
Furthermore, the reaction chamber B contains hydrolysis acidification liquid, and the hydrolysis acidification liquid contains hydrolysis flora and acidification flora.
Further, the reaction chamber A contains pretreatment liquid, and the pretreatment liquid contains bacterial flora containing Aspergillus niger and Penicillium citrinum in fungi flora of actinomycete phylum.
Furthermore, a one-way valve is arranged on a pipeline of the reaction chamber A connected with an air pump.
Furthermore, a pipeline is connected to the side wall of one end of the reaction chamber A above the pipeline connected to the air pump, and a one-way valve is arranged on the pipeline.
Further, the oxygen meter is a CY-12C oxygen meter.
By adopting the technical scheme, the method has the following beneficial effects:
the device has a simple structure and reasonable arrangement, the crushed materials and the reaction liquid are fully mixed by crushing through the stirring crusher in the reaction chamber A, the air pump can supply oxygen to the reaction chamber A, the optimal oxygen load is adjusted through the oxygen measuring instrument for pretreatment, and the whole process is integrated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-a feed inlet; 2-liquid inlet; 3-gas guide tube; 4-stirring and crushing device; 5-oxygen measuring instrument; 6-discharging port; 7-a one-way valve; 8-air pump; 9-nitrogen pump; 10-reaction chamber a; 11-reaction chamber B.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
the device for pretreating straws by using microaerophilic organisms comprises a reaction chamber A10 and a reaction chamber B11, wherein the left end and the right end of the top of the reaction chamber A10 are respectively provided with a feeding hole 1 and a liquid inlet 2, a motor is arranged in the middle of the reaction chamber A10 and is connected with a stirring and crushing device 4, the stirring and crushing device 4 is arranged in the reaction chamber A10, an oxygen measuring instrument 5 is arranged above the side wall of one end of the reaction chamber A10, a discharging hole 6 is arranged below the side wall, and the other end of the reaction chamber is connected with an air pump 8 through a conduit;
the stirred and crushed raw materials discharged from the discharge port 6 of the reaction chamber A10 can be connected to the feed port 1 of the reaction chamber B11 through a detachable conduit to continue the reaction, and the feed port 1, the discharge port 6 and the liquid inlet 2 of the reaction chamber B11 have the same structure as the reaction chamber A10.
The reaction chamber B11 contains hydrolysis acidification liquid, and the hydrolysis acidification liquid contains hydrolysis flora and acidification flora.
The reaction chamber A10 contains pretreatment liquid, and the pretreatment liquid contains bacterial flora containing Aspergillus niger and Penicillium citrinum in fungus flora of actinomycete phylum.
The pipeline of the reaction chamber A10 connected to the air pump 8 is provided with a one-way valve 7.
And a pipeline is connected to the upper part of the side wall of one end of the reaction chamber A10 relative to the pipeline connected to the air pump 8, and a one-way valve 7 is arranged on the pipeline.
The oxygen measuring instrument 5 is a CY-12C oxygen measuring instrument 5.
When the straw pretreatment device is used specifically, straws enter the reaction chamber A10 through the feed inlet 1 of the reaction chamber A10 to react, and pretreatment liquid is put into the reaction chamber A10 through the liquid inlet 2. Then the straw is crushed by the stirring crusher 4 and is fully mixed with the pretreatment liquid. Meanwhile, the air pump 8 is adjusted according to the data feedback of the small-sized oxygen measuring instrument 5, the oxygen load in the reaction chamber A10 is always controlled, the optimal oxygen load of the biological pretreatment is achieved, and the micro-aerobic biological pretreatment is realized to increase the dissolution of organic matters and the generation of organic acids in the hydrolysis acidification stage of the anaerobic digestion of the straws.
After the pretreatment is sufficiently performed, the valve is opened, and the pretreated product is taken out and then enters the reaction chamber B11 through the feed inlet 1 of the reaction chamber A10 for the next reaction. After all the reaction products enter, closing the feed inlet 1 of the reaction chamber B11, then putting hydrolysis acidification liquid into the reaction chamber B11 through the liquid inlet 2, then closing the liquid inlet 2, simultaneously opening the nitrogen pump 9 to create an anaerobic environment for the reaction chamber B11 through the gas guide tube 3 and the one-way valve 7 to carry out hydrolysis acidification, and after the reaction is completed, taking out the reaction product, namely organic acid, from the discharge outlet 6 of the reaction chamber B11.
In another embodiment of the present invention, a temperature controller may be provided at each of both ends of the reaction chamber a10 and the reaction chamber B11, as required, and the temperature range of the reaction may be controlled by the temperature controller, which is required for the reaction of the microorganism.
The device has a simple structure and reasonable arrangement, the stirring pulverizer 4 in the reaction chamber A10 is used for pulverizing and reacting, the pulverized materials and the reaction liquid are fully mixed, the air pump 8 can supply oxygen to the reaction chamber A10, the optimal oxygen load is adjusted by the oxygen meter 5 for pretreatment, and the whole pretreatment device is integrated.
Having thus described the basic principles and principal features of the invention, it will be appreciated by those skilled in the art that the invention is not limited by the embodiments described above, which are given by way of illustration only, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (6)

1. A micro-aerobic biological pretreatment device for straws comprises a reaction chamber A and a reaction chamber B, and is characterized in that a feed inlet and a liquid inlet are respectively formed in the left end and the right end of the top of the reaction chamber A, a motor is arranged in the middle of the reaction chamber A and connected to a stirring pulverizer, the stirring pulverizer is arranged in the reaction chamber A, an oxygen meter is arranged above the side wall of one end of the reaction chamber A, a discharge outlet is formed below the side wall of one end of the reaction chamber A, and the other end of the reaction chamber is connected to an air pump through a conduit;
the raw materials after stirring and crushing from the discharge port of the reaction chamber A can be continuously reacted through the detachable conduit connected to the feed port of the reaction chamber B, and the feed port, the discharge port and the liquid inlet of the reaction chamber B are identical to the structure of the reaction chamber A.
2. The apparatus of claim 1, wherein the reaction chamber B contains hydrolytic acidification liquid, and the hydrolytic acidification liquid contains hydrolytic flora and acidification flora.
3. The apparatus of claim 1, wherein the reaction chamber A contains a pretreatment solution, and the pretreatment solution contains bacterial flora comprising Aspergillus niger and Penicillium citrinum in fungi flora of Actinomycetes.
4. The apparatus for the microaerophilic biological pretreatment of straw as claimed in claim 1, wherein the pipe connecting the reaction chamber A to the air pump is provided with a one-way valve.
5. The apparatus for the microaerophilic biological pretreatment of straw as claimed in claim 1, wherein a pipe is connected to a side wall of one end of the reaction chamber a above a pipe connected to an air pump, and a check valve is provided on the pipe.
6. The apparatus for the microaerophilic biological pretreatment of straw as claimed in claim 1, wherein said oxygen meter is a CY-12C oxygen meter.
CN202010400407.9A 2020-05-13 2020-05-13 Micro-aerobic biological pretreatment device for straw Pending CN111471584A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4339611A1 (en) * 2022-09-19 2024-03-20 Nova Skantek (Hunan) Environ Energy Co., Ltd Test system and test method for aerobic biodegradability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4339611A1 (en) * 2022-09-19 2024-03-20 Nova Skantek (Hunan) Environ Energy Co., Ltd Test system and test method for aerobic biodegradability

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