CN113862134A - Micro-nano bubble circulation hydrogen supply anaerobic fermentation tank - Google Patents
Micro-nano bubble circulation hydrogen supply anaerobic fermentation tank Download PDFInfo
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- CN113862134A CN113862134A CN202111177027.4A CN202111177027A CN113862134A CN 113862134 A CN113862134 A CN 113862134A CN 202111177027 A CN202111177027 A CN 202111177027A CN 113862134 A CN113862134 A CN 113862134A
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- 239000002101 nanobubble Substances 0.000 title claims abstract description 72
- 239000001257 hydrogen Substances 0.000 title claims abstract description 62
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 59
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000000855 fermentation Methods 0.000 title claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 35
- 238000005273 aeration Methods 0.000 claims abstract description 10
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 238000000746 purification Methods 0.000 claims abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000010806 kitchen waste Substances 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 6
- -1 hydrogen Chemical class 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000035484 reaction time Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/26—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
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- 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
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- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/02—Means for regulation, monitoring, measurement or control, e.g. flow regulation of foam
- C12M41/04—Means for foam enhancement
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- 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
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
- C12M41/22—Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/40—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
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Abstract
A micro-nano bubble circulation hydrogen supply anaerobic fermentation tank. The tank body is provided with a jacket; the stirring shaft penetrates through the top plate and is inserted into the tank body, and the bottom end of the stirring shaft is connected with a stirring paddle; the rear end of the circulating pipe is assembled with the micro-nano bubble generating device, and the front end of the circulating pipe is inserted into the tank body through the top plate; the rear end of the bubble tube is assembled with the micro-nano bubble generating device, the front end of the bubble tube is inserted into the tank body through the bottom plate of the tank body, and the front end of the bubble tube is fixed with an aeration head; the dosing box is communicated with the interior of the tank body; a feed inlet and an exhaust outlet are arranged on the top plate of the tank body; the exhaust port is provided with a first valve; the circulating pipe is provided with a second valve and a gas circulating pump; and a gas flowmeter and a third valve are arranged on the bubble tube. The system can adjust the temperature and the pH value in time, and ensure the effect of anaerobic fermentation; the in-situ purification of the biogas is realized, the retention time and the mass transfer efficiency of the hydrogen in the anaerobic fermentation tank are improved, the waste is reduced, and the circular hydrogen supply is realized.
Description
Technical Field
The invention belongs to the technical field of fermentation tanks, and relates to a micro-nano bubble circulation hydrogen supply anaerobic fermentation tank.
Background
Anaerobic fermentation is an effective resource recovery technology and can convert organic solid wastes into biogas. The methane content in the biogas generated by anaerobic fermentation is generally 50-70%, when the methane content reaches more than 95%, purified biogas with higher calorific value-biomethane can be obtained, and the biogas can be used as a substitute of natural gas, such as cogeneration or entering a natural gas pipe network to serve as a civil fuel, and can also serve as a chemical raw material and a vehicle fuel, so that the application range is wider.
Researchers find that the biogas can be purified by adding hydrogen from an external source, the method has mild conditions and few byproducts, but the solubility of the hydrogen in water is poor, and the development of the technology is hindered by low gas-liquid mass transfer efficiency, so that the improvement of the retention time of the hydrogen in a reactor and the improvement of the mass transfer efficiency of the hydrogen are important researches.
Disclosure of Invention
The invention aims to provide a micro-nano bubble circulation hydrogen supply anaerobic fermentation tank.
The micro-nano bubble circulation hydrogen supply anaerobic fermentation tank comprises a tank body 1, a micro-nano bubble generating device 2, a stirring system, a bubble tube 21 and a circulation tube 18; the tank body 1 comprises a side wall, a top plate and a bottom plate; a jacket 26 is sleeved outside the tank body 1, and a water inlet 15 and a water outlet 16 are respectively arranged on the jacket 26; a slag discharge port 17 is arranged on the bottom plate of the tank body 1 and is communicated with the outside through a valve; the stirring system comprises a stirring motor 7, a stirring shaft 8 and a stirring paddle 9; the stirring shaft 8 penetrates through the top plate and is inserted into the tank body 1, and the bottom end of the stirring shaft 8 is fixedly connected with a stirring paddle 9; the rear end of the circulating pipe 18 is assembled with the micro-nano bubble generating device 2, and the front end of the circulating pipe 18 is inserted into the tank body 1 through the top plate of the tank body 1; the rear end of the bubble tube 21 is assembled with the micro-nano bubble generating device 2, the front end of the bubble tube 21 is inserted into the tank body 1 through the bottom plate of the tank body 1, and the front end of the bubble tube 21 is fixed with an aeration head 24; the dosing tank 14 is communicated with the interior of the tank body 1 through a dosing pipeline, and a control valve 13 is arranged on the dosing pipeline; a feed inlet 4 and an exhaust port 5 are arranged on the top plate of the tank body 1; wherein the exhaust port 5 is provided with a first valve 6; the circulating pipe 18 is provided with a second valve 19 and a gas circulating pump 25, and the second valve 19 is positioned between the tank 1 and the gas circulating pump 25; the bubble vial 21 is equipped with a gas flow meter 22 and a third valve 23, the third valve 23 being located between the gas flow meter 22 and the aeration head 24.
In the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, the water inlet 15 is positioned at the lower part of the jacket 26, and the water outlet 16 is positioned at the upper part of the jacket 26.
In the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, a pressure gauge 3 is arranged on a top plate of the tank body 1.
In the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, a thermometer 10 is arranged on the top plate of the tank body 1.
In the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, a gas detector 11 is arranged on the top plate of the tank body 1.
In the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, a pH detector 12 is arranged on the top plate of the tank body 1.
In the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, the top plate of the micro-nano bubble generation device 2 is provided with the air inlet 20.
The use method of the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank comprises the following steps:
(1) circulating water is introduced into the jacket through the water inlet and the water outlet;
(2) adding the kitchen waste into the tank body through a feed inlet;
(3) starting a motor to rotate a stirring paddle, and stirring and mixing the kitchen waste; putting sodium hydroxide solution into a dosing tank; when the pH value of the material in the tank body is less than 6.8, opening a control valve, putting a sodium hydroxide solution into the tank body, and adjusting the pH value of the material in the tank body to be 6.8-7.5;
(4) introducing hydrogen through an air inlet of the micro-nano bubble generating device; under the condition that the feed port, the third valve and the second valve are opened, the tank body is filled with hydrogen to discharge air from the feed port; then closing the gas inlet to stop introducing hydrogen, closing the feed inlet, and starting a gas circulating pump to make the hydrogen return to the micro-nano bubble generating device from the micro-nano bubble generating device through a bubble tube, a tank body and a circulating tube in sequence; hydrogen forms micro-nano bubbles under the action of a micro-nano bubble generating device, the micro-nano bubbles enter the kitchen waste through an aeration head, the micro-nano bubbles are discharged from the kitchen waste after reaction, and the generated methane and the residual hydrogen enter a circulating pipe;
(5) when the micro-nano bubbles stay in the kitchen waste, the kitchen waste is H under the action of methanogen2With CO and CO2Reaction to form CH4(ii) a H in micro-nano bubbles2Under the action of methanogen hydrogenophile, CO is converted into hydrogen2Conversion to CH4Realizing the in-situ purification of the biogas; with CH4When the air pressure in the tank body is gradually increased and exceeds 0.3MPa, a first valve is opened to discharge and collect the generated methane; controlling the air pressure in the tank body in the reaction process<0.3MPa；
(6) And detecting the gas components in the tank body through a gas detector on the tank body, and finishing the reaction when the volume concentration of the hydrogen is lower than 1%.
In the method, the temperature of the materials in the tank body is controlled to be between 34 and 38 ℃ under the cooling effect of the circulating water.
In the above process, H2CO and CO2The reaction formula for generating methane is:
CO+3H2→CH4+H2O
and
CO2+4H2→CH4+2H2O。
in the above process, CO2Conversion to CH4The reaction formula (A) is as follows:
CO2+4H2→CH4+2H2O。
the mass concentration of the sodium hydroxide solution is 20-30%.
In the method, the pH value of the material in the tank body is detected on line by a pH detector on the tank body.
The mass content of the water in the kitchen waste is 60-75%.
In the step (5), the amount of hydrogen introduced from the gas inlet is calculated according to CO and CO in the kitchen waste2All reactions forming CH4The method comprises the following steps of (1) taking; the hydrogen flow of the gas circulating pump is based on that when the volume concentration of the hydrogen is less than 1%, the total reaction time is 15-25 days.
The invention has the beneficial effects that: the temperature meter and the pH detection and control device are arranged, so that the temperature and the pH value can be adjusted in time, and the effect of anaerobic fermentation is ensured; the hydrogen is introduced into the fermentation tank, so that the in-situ purification of the methane is realized, meanwhile, the micro-nano bubble generating device is arranged, the residence time and the mass transfer efficiency of the hydrogen in the anaerobic fermentation tank can be improved, the relative content of the methane is effectively improved, the waste is reduced, and the circular hydrogen supply is realized.
Drawings
FIG. 1 is a schematic diagram of a micro-nano bubble circulation hydrogen supply anaerobic fermentation tank structure of the invention;
in the figure, 1, a tank body, 2, a micro-nano bubble generating device, 3, a pressure gauge, 4, a feeding hole, 5, an exhaust port, 6, a first valve, 7, a motor, 8, a stirring shaft, 9, a stirring paddle, 10, a thermometer, 11, a gas detector, 12, a pH detector, 13, a control valve, 14, a dosing tank, 15, a water inlet, 16, a water outlet, 17, a slag discharge port, 18, a circulating pipe, 19, a second valve, 20, an air inlet, 21, a bubble pipe, 22, a gas flowmeter, 23, a third valve, 24, an aeration head, 25, a gas circulating pump, 26 and a jacket.
Detailed Description
CH in methane gas generated in the examples of the present invention4The volume concentration of (A) is more than or equal to 95 percent.
The micro-nano bubble generating device in the embodiment of the invention is a commercially available LWP750 micro-nano bubble generator.
The average size of the micro-nano bubbles in the embodiment of the invention is 50 microns.
After the reaction is completed in the embodiment of the invention, the valve of the slag discharging port 17 is opened, and the residual materials are discharged through the slag discharging port 17.
In the embodiment of the invention, the thermometer, the gas detector and the pH detector are commercially available products.
In the embodiment of the invention, sodium hydroxide is a commercial industrial-grade product.
Example 1
The structure of the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank is shown in figure 1 and comprises a tank body 1, a micro-nano bubble generating device 2, a stirring system, a bubble tube 21 and a circulation tube 18; the tank body 1 comprises a side wall, a top plate and a bottom plate;
a jacket 26 is sleeved outside the tank body 1, and a water inlet 15 and a water outlet 16 are respectively arranged on the jacket; a slag discharge port 17 is arranged on the bottom plate of the tank body 1 and is communicated with the outside through a valve;
the stirring system comprises a stirring motor 7, a stirring shaft 8 and a stirring paddle 9; the stirring shaft 8 penetrates through the top plate and is inserted into the tank body 1, and the bottom end of the stirring shaft 8 is fixedly connected with a stirring paddle 9;
the rear end of the circulating pipe 18 is assembled with the inlet of the micro-nano bubble generating device 2, and the front end of the circulating pipe 18 is inserted into the tank body 1 through the top plate of the tank body 1; the rear end of the bubble tube 21 is assembled with the outlet of the micro-nano bubble generating device 2, the front end of the bubble tube 21 is inserted into the tank body 1 through the bottom plate of the tank body 1, and the front end of the bubble tube 21 is fixedly provided with an aeration head 24;
the dosing tank 14 is communicated with the interior of the tank body 1 through a dosing pipeline, and a control valve 13 is arranged on the dosing pipeline; a feed inlet 4 and an exhaust port 5 are arranged on the top plate of the tank body 1; wherein the exhaust port 5 is provided with a first valve 6; the circulating pipe 18 is provided with a second valve 19 and a gas circulating pump 25, and the second valve 19 is positioned between the tank 1 and the gas circulating pump 25; the bubble tube 21 is provided with a gas flow meter 22 and a third valve 23, and the third valve 23 is positioned between the gas flow meter 22 and an aerator 24;
the water inlet 15 is positioned at the lower part of the jacket 26, and the water outlet 16 is positioned at the upper part of the jacket 26;
a pressure gauge 3 is arranged on a top plate of the tank body 1;
a thermometer 10 is arranged on the top plate of the tank body 1;
a gas detector 11 is arranged on the top plate of the tank body 1;
a pH detector 12 is assembled on the top plate of the tank body 1;
an air inlet 20 is arranged on the top plate of the micro-nano bubble generating device 2;
the using method comprises the following steps:
circulating water is introduced into the jacket through the water inlet and the water outlet;
adding the kitchen waste into the tank body through a feed inlet;
starting a motor to rotate a stirring paddle, and stirring and mixing the kitchen waste; putting sodium hydroxide solution into a dosing tank; when the pH value of the material in the tank body is less than 6.8, opening a control valve, putting a sodium hydroxide solution into the tank body, and adjusting the pH value of the material in the tank body to be 7.0;
introducing hydrogen through an air inlet of the micro-nano bubble generating device; under the condition that the feed port, the third valve and the second valve are opened, the tank body is filled with hydrogen to discharge air from the feed port; then closing the gas inlet to stop introducing hydrogen, closing the feed inlet, and starting a gas circulating pump to make the hydrogen return to the micro-nano bubble generating device from the micro-nano bubble generating device through a bubble tube, a tank body and a circulating tube in sequence; hydrogen forms micro-nano bubbles under the action of a micro-nano bubble generating device, the micro-nano bubbles enter the kitchen waste through an aeration head, the micro-nano bubbles are discharged from the kitchen waste after reaction, and the generated methane and the residual hydrogen enter a circulating pipe;
when the micro-nano bubbles stay in the kitchen waste, the kitchen waste is H under the action of methanogen2With CO and CO2Reaction to form CH4(ii) a H in micro-nano bubbles2Under the action of methanogen hydrogenophile, CO is converted into hydrogen2Conversion to CH4Realizing the in-situ purification of the biogas; with CH4When the air pressure in the tank body is gradually increased and exceeds 0.3MPa, a first valve is opened to discharge and collect the generated methane; controlling the air pressure in the tank body in the reaction process<0.3MPa；
Detecting gas components in the tank body through a gas detector on the tank body, and finishing the reaction when the volume concentration of hydrogen is lower than 1%;
controlling the temperature of the materials in the tank body to be between 34 and 38 ℃ under the cooling effect of circulating water;
the mass concentration of the sodium hydroxide solution is 25 percent;
detecting the pH value of the material in the tank body on line by using a pH detector on the tank body;
the mass content of the water in the kitchen waste is 70%;
introducing hydrogen from the air inlet to remove CO and CO in the kitchen waste2All reactions forming CH4The method comprises the following steps of (1) taking; the hydrogen flow of the gas circulation pump is based on that when the volume concentration of the hydrogen is less than 1 percent, the total reaction time is 15 days.
Example 2
The structure of the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank is the same as that of the embodiment 1;
the method is the same as example 1, except that:
(1) the pH value of the material in the tank body is 6.8;
(2) the mass concentration of the sodium hydroxide solution is 30 percent;
(3) the mass content of the water in the kitchen waste is 75%;
(4) the total reaction time was 20 days.
Example 3
The structure of the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank is the same as that of the embodiment 1;
the method is the same as example 1, except that:
(1) the pH value of the materials in the tank body is 7.5;
(2) the mass concentration of the sodium hydroxide solution is 20 percent;
(3) the mass content of the water in the kitchen waste is 60%;
(4) the total reaction time was 25 days.
Claims (8)
1. A micro-nano bubble circulation hydrogen supply anaerobic fermentation tank is characterized by comprising a tank body, a micro-nano bubble generating device, a stirring system, a bubble tube and a circulation tube; the tank body comprises a side wall, a top plate and a bottom plate; a jacket is sleeved outside the tank body, and a water inlet and a water outlet are respectively arranged on the jacket; a slag discharge port is arranged on the bottom plate of the tank body and is communicated with the outside through a valve; the stirring system comprises a stirring motor, a stirring shaft and a stirring paddle; the stirring shaft penetrates through the top plate and is inserted into the tank body, and the bottom end of the stirring shaft is fixedly connected with a stirring paddle; the rear end of the circulating pipe is assembled with the micro-nano bubble generating device, and the front end of the circulating pipe is inserted into the tank body through the top plate of the tank body; the rear end of the bubble tube is assembled with the micro-nano bubble generating device, the front end of the bubble tube is inserted into the tank body through the bottom plate of the tank body, and the front end of the bubble tube is fixed with an aeration head; the dosing tank is communicated with the interior of the tank body through a dosing pipeline, and a control valve is arranged on the dosing pipeline; a feed inlet and an exhaust outlet are arranged on the top plate of the tank body; wherein the exhaust port is provided with a first valve; the circulating pipe is provided with a second valve and a gas circulating pump, and the second valve is positioned between the tank body and the gas circulating pump; and the bubble tube is provided with a gas flow meter and a third valve, and the third valve is positioned between the gas flow meter and the aeration head.
2. The micro-nano bubble circulation hydrogen supply anaerobic fermentation tank of claim 1, wherein in the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank, the water inlet is positioned at the lower part of the jacket, and the water outlet is positioned at the upper part of the jacket.
3. The anaerobic fermentation tank for micro-nano bubble circulation hydrogen supply of claim 1, wherein a pressure gauge is assembled on a top plate of the tank body.
4. The anaerobic fermentation tank for circulation hydrogen supply of micro-nano bubbles as claimed in claim 1, wherein a thermometer is mounted on the top plate of the tank body.
5. The anaerobic fermentation tank for micro-nano bubble circulation hydrogen supply of claim 1, wherein a gas detector is assembled on the top plate of the tank body.
6. The anaerobic fermentation tank for micro-nano bubble circulation hydrogen supply of claim 1, wherein a pH detector is assembled on the top plate of the tank body.
7. The anaerobic fermentation tank for circulation hydrogen supply of micro-nano bubbles according to claim 1, wherein the top plate of the micro-nano bubble generation device is provided with an air inlet.
8. The use method of the micro-nano bubble circulation hydrogen supply anaerobic fermentation tank of claim 1 is characterized by comprising the following steps:
(1) circulating water is introduced into the jacket through the water inlet and the water outlet;
(2) adding the kitchen waste into the tank body through a feed inlet;
(3) starting a motor to rotate a stirring paddle, and stirring and mixing the kitchen waste; putting sodium hydroxide solution into a dosing tank; when the pH value of the material in the tank body is less than 6.8, opening a control valve, putting a sodium hydroxide solution into the tank body, and adjusting the pH value of the material in the tank body to be 6.8-7.5;
(4) introducing hydrogen through an air inlet of the micro-nano bubble generating device; under the condition that the feed port, the third valve and the second valve are opened, the tank body is filled with hydrogen to discharge air from the feed port; then closing the gas inlet to stop introducing hydrogen, closing the feed inlet, and starting a gas circulating pump to make the hydrogen return to the micro-nano bubble generating device from the micro-nano bubble generating device through a bubble tube, a tank body and a circulating tube in sequence; hydrogen forms micro-nano bubbles under the action of a micro-nano bubble generating device, the micro-nano bubbles enter the kitchen waste through an aeration head, the micro-nano bubbles are discharged from the kitchen waste after reaction, and the generated methane and the residual hydrogen enter a circulating pipe;
(5) when the micro-nano bubbles stay in the kitchen waste, the kitchen waste is H under the action of methanogen2With CO and CO2Reaction to form CH4(ii) a H in micro-nano bubbles2Under the action of methanogen hydrogenophile, CO is converted into hydrogen2Conversion to CH4Realize the in-situ purification of the biogas(ii) a With CH4When the air pressure in the tank body is gradually increased and exceeds 0.3MPa, a first valve is opened to discharge and collect the generated methane; controlling the air pressure in the tank body in the reaction process<0.3MPa；
(6) And detecting the gas components in the tank body through a gas detector on the tank body, and finishing the reaction when the volume concentration of the hydrogen is lower than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111177027.4A CN113862134A (en) | 2021-10-09 | 2021-10-09 | Micro-nano bubble circulation hydrogen supply anaerobic fermentation tank |
Applications Claiming Priority (1)
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