CN209872960U - Anaerobic digestion reactor - Google Patents
Anaerobic digestion reactor Download PDFInfo
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- CN209872960U CN209872960U CN201920331080.7U CN201920331080U CN209872960U CN 209872960 U CN209872960 U CN 209872960U CN 201920331080 U CN201920331080 U CN 201920331080U CN 209872960 U CN209872960 U CN 209872960U
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Abstract
The utility model relates to an anaerobic digestion reactor, which comprises a reaction tank, wherein the tank body of the reaction tank is provided with a hollow interlayer, and the hollow interlayer of the tank body is connected with a water circulation heating device through a pipeline; a circle of partition plate is arranged at the center of the bottom of the reaction tank, the interior of the reaction tank is divided into an inner ring reaction zone and an outer ring reaction zone by the partition plate, and the upper parts of the inner ring reaction zone and the outer ring reaction zone are communicated; the partition plate is provided with a hollow interlayer, and the hollow interlayer of the partition plate is communicated with the hollow interlayer of the tank body; stirrers are arranged in the inner ring reaction zone and the outer ring reaction zone; the tank body is provided with a feed pipe communicated with the inner ring reaction zone, a discharge pipe communicated with the outer ring reaction zone and an evacuation pipe; the top of the reaction tank is sealed by a cover plate, and an exhaust pipe for communicating the outer ring reaction area with the outside is fixed on the cover plate; the utility model discloses suitable kitchen garbage's resource utilization can effectively separate and produce the acid phase and produce the methane phase, improves anaerobic reaction efficiency.
Description
Technical Field
The utility model belongs to the anaerobic digestion field, in particular to an anaerobic digestion reactor.
Background
With the continuous improvement of the living standard of urban residents in China, the yield of kitchen waste is rapidly increased, and the yield of the kitchen waste is close to 1 hundred million tons every year in China at present; the main disposal technologies of the kitchen waste include anaerobic digestion, feed preparation, landfill, composting and the like; the anaerobic digestion technology can realize the reduction and the resource utilization of the kitchen waste, and a large amount of research and application are obtained.
In the traditional anaerobic digestion reaction, the activity of methanogens is inhibited due to the generation of volatile fatty acids, so that the reaction process of anaerobic digestion is limited, and when the volatile fatty acids are excessively accumulated, the activity of the methanogens is seriously inhibited, and finally, the collapse of an anaerobic digestion system is caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in filling the not enough of prior art, provides one kind can an anaerobic digestion reactor, improves anaerobic reaction efficiency.
Therefore, the utility model discloses specific scheme is as follows:
an anaerobic digestion reactor comprises a reaction tank, wherein a tank body of the reaction tank is provided with a hollow interlayer, and the hollow interlayer of the tank body is connected with a water circulation heating device through a pipeline; a circle of partition plate is arranged at the center of the bottom of the reaction tank, the interior of the reaction tank is divided into an inner ring reaction zone and an outer ring reaction zone by the partition plate, and the upper parts of the inner ring reaction zone and the outer ring reaction zone are communicated; the partition plate is provided with a hollow interlayer, and the hollow interlayer of the partition plate is communicated with the hollow interlayer of the tank body; stirrers are arranged in the inner ring reaction zone and the outer ring reaction zone; the tank body is provided with a feed pipe communicated with the inner ring reaction zone, a discharge pipe communicated with the outer ring reaction zone and an evacuation pipe; the top of the reaction tank is sealed by a cover plate, and an exhaust pipe for communicating the outer ring reaction area with the outside is fixed on the cover plate.
Preferably, the cover plate is made of transparent materials.
Preferably, a plurality of air inlets with the same size are uniformly distributed on the pipe body of the exhaust pipe.
Preferably, the feeding pipe, the discharging pipe, the emptying pipe and the exhaust pipe are all provided with switch valves.
Preferably, the volume ratio of the inner ring reaction zone to the outer ring reaction zone is 1: 5.
preferably, the tank body is provided with a pressure gauge for monitoring the internal pressure of the reaction tank.
Preferably, a thermometer for monitoring the internal temperature of the reaction tank is arranged on the tank body.
Preferably, a methane gas detector for monitoring the content of methane in the reaction tank is arranged on the tank body.
The beneficial effects of the utility model reside in that:
the reaction tank body of the utility model adopts a hollow sandwich structure, the hollow sandwich layer is connected with a water circulation heating device to lead hot water circulation into the sandwich layer in the tank body, thereby controlling the temperature in the reaction tank within a certain range and being beneficial to the reaction in the reaction tank; meanwhile, the reaction tank is divided into an inner ring reaction area and an outer ring reaction area by a circle of baffle plates at the center, wherein the inner ring reaction area is used as a hydrolytic acidification phase, the outer ring reaction area is used as a methane production phase, the kitchen waste is firstly injected into the inner ring reaction area through a feed pipe, and naturally overflows to the outer ring reaction area after the hydrolytic acidification in the inner ring reaction area; the hydrolytic acidification process and the methanation process are separately arranged, so that the phenomenon that organic acid generated in the hydrolytic acidification process inhibits the activity of methanogenic bacteria is avoided; the acid production phase and the methane production phase are effectively separated, and an advantageous space is provided for the methane production activity, so that the efficiency of the anaerobic reactor is improved, the stable gas production rate is realized, the system is stable, and the resource utilization of the kitchen waste can be effectively improved.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the exhaust pipe;
wherein: the device comprises a reaction tank 1, a hollow interlayer 1a, a partition plate 2, a hollow interlayer 2a, a stirrer 3, a stirrer 4, a stirrer 5, an exhaust pipe 6, an air inlet 6a, a feed pipe 7, an exhaust pipe 8, a cover plate 9, a discharge pipe 10, an outer ring reaction zone 11, an inner ring reaction zone 12, a pressure gauge 13, a thermometer 14, a methane gas detector 15 and a water circulation heater 16.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Referring to fig. 1, an anaerobic digestion reactor includes a reaction tank 1 having a hollow sandwich layer 1 a.
Referring to fig. 2, a water inlet and a water outlet are arranged on a hollow interlayer 1a of the tank body, and the water inlet and the water outlet are connected with a water circulation heater 16 through pipelines, so that circulating hot water can be introduced into the tank body interlayer, and the temperature inside the reaction tank 1 can be regulated and maintained within a certain range, so as to be beneficial to normal operation of reaction in the tank.
The bottom center of reaction tank 1 is provided with round baffle 2, baffle 2 and reaction tank 1 integrated into one piece, and baffle 2 separates the inside of reaction tank 1 for inner ring reaction zone 12 and outer loop reaction zone 11, and the preferred 1: 5.
the upper end of the baffle plate 2 is not closed, and the inner ring reaction zone 12 is communicated with the upper part of the outer ring reaction zone 11 and is used for overflowing liquid.
The clapboard 2 is also provided with a hollow interlayer 2a, and the hollow interlayer 2a of the clapboard is communicated with the hollow interlayer 1a of the tank body to introduce hot water circulation.
The stirrer 4 is arranged in the inner ring reaction zone 12, the two stirrers 3 and 5 are symmetrically arranged in the outer ring reaction zone 11, each stirrer can refer to the conventional stirrer, the driving mechanism of the stirrer can be fixed on the cover plate 9 or a bracket is fixedly arranged above the cover plate 9, and the stirring shaft and the stirring blades extend into the reaction tank 1.
A feed pipe 7 communicated with the inner ring reaction zone 12, a discharge pipe 10 communicated with the outer ring reaction zone 11 and an emptying pipe 8 are arranged on the tank body; the emptying pipe 8 is used for emptying and slag removal.
The top of the reaction tank 1 is sealed by a cover plate 9, and an exhaust pipe 6 for communicating the outer ring reaction area 11 with the outside is fixed on the cover plate 9.
The cover plate 9 can be made of transparent materials, so that an operator can observe the reaction condition inside the reaction tank 1 conveniently, and an observation window does not need to be additionally arranged on the tank body.
Referring to fig. 3, a plurality of air inlets 6a with the same size are uniformly distributed on the pipe body of the exhaust pipe 6, so that methane generated in the reaction tank 1 rapidly enters the exhaust pipe 6 through the holes and is discharged to the outside of the reaction tank 1.
The feeding pipe 7, the discharging pipe 10, the emptying pipe 8 and the exhaust pipe 6 are provided with switch valves, so that the regulation and the control are convenient.
The tank body is provided with a pressure gauge 13 for monitoring the internal pressure of the reaction tank, a thermometer 14 for monitoring the internal temperature of the reaction tank, and a methane gas detector 15 for monitoring the content of methane in the reaction tank.
In actual operation, the on-off valve of the exhaust pipe 6 can be controlled according to the detection value of the methane gas detector 15 to adjust the emission frequency of the methane gas; controlling a switch valve of the emptying pipe 8 according to the detection value of the pressure gauge 13, and adjusting the pressure state and slag removal in the reaction tank; the water circulation heater 16 is adjusted according to the detected value of the thermometer 14 to maintain the reaction temperature in the reaction tank.
The basic working principle of the utility model is as follows:
taking a certain market kitchen waste as an example, the main components of the kitchen waste are rice, vegetables, meat, plastics, oil and the like, and the kitchen waste is pretreated by sorting, crushing and the like, when the kitchen waste is in a slurry state, the total solid content of the kitchen waste is about 5 percent, the volatile solid content of the kitchen waste is about 5.5 percent, and the kitchen waste is pumped into an inner ring reaction zone 12 of a reaction tank 1 from a feeding pipe 7.
Inoculating sludge is placed in the inner ring reaction zone 12, the stirrer 4 is started to stir, hydrolysis and acidification are carried out for 3 days in the inner ring elimination reaction zone 12, the kitchen waste continuously overflows into the outer ring reaction zone 11 from the upper part of the partition plate 2 in the hydrolysis and acidification processes, the stirrers 4 and 5 are started to stir for methanogenesis reaction, and the generated methane gas is discharged out of the tank body through the exhaust pipe 6; after about 22 days of methanogenesis reaction, operating personnel can observe the internal conditions through the apron 9 of transparent material, and the partial mixed liquid that will handle the completion is discharged through discharging pipe 10 department, carries out subsequent processing.
In the reaction process, hot water is introduced into the hollow interlayer of the tank body and the partition plate, the temperature in the reaction tank is controlled and maintained at 37 ℃ through hot water circulation, and the organic solid removal rate of the whole reactor can reach 85%.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (8)
1. An anaerobic digestion reactor characterized by: the device comprises a reaction tank, wherein a tank body of the reaction tank is provided with a hollow interlayer, and the hollow interlayer of the tank body is connected with a water circulation heating device through a pipeline; a circle of partition plate is arranged at the center of the bottom of the reaction tank, the interior of the reaction tank is divided into an inner ring reaction zone and an outer ring reaction zone by the partition plate, and the upper parts of the inner ring reaction zone and the outer ring reaction zone are communicated; the partition plate is provided with a hollow interlayer, and the hollow interlayer of the partition plate is communicated with the hollow interlayer of the tank body; stirrers are arranged in the inner ring reaction zone and the outer ring reaction zone; the tank body is provided with a feed pipe communicated with the inner ring reaction zone, a discharge pipe communicated with the outer ring reaction zone and an evacuation pipe; the top of the reaction tank is sealed by a cover plate, and an exhaust pipe for communicating the outer ring reaction area with the outside is fixed on the cover plate.
2. An anaerobic digestion reactor according to claim 1, characterized in that: the cover plate is made of transparent materials.
3. An anaerobic digestion reactor according to claim 1, characterized in that: a plurality of air inlets with the same size are uniformly distributed on the pipe body of the exhaust pipe.
4. An anaerobic digestion reactor according to claim 1 or 3, characterized in that: the feeding pipe, the discharging pipe, the emptying pipe and the exhaust pipe are all provided with switch valves.
5. An anaerobic digestion reactor according to claim 1, characterized in that: the volume ratio of the inner ring reaction zone to the outer ring reaction zone is 1: 5.
6. an anaerobic digestion reactor according to claim 1, characterized in that: the cell body is provided with a pressure gauge for monitoring the internal pressure of the reaction cell.
7. An anaerobic digestion reactor according to claim 1, characterized in that: the tank body is provided with a thermometer for monitoring the internal temperature of the reaction tank.
8. An anaerobic digestion reactor according to claim 1, characterized in that: and a methane gas detector for monitoring the content of methane in the reaction tank is arranged on the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920331080.7U CN209872960U (en) | 2019-03-15 | 2019-03-15 | Anaerobic digestion reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920331080.7U CN209872960U (en) | 2019-03-15 | 2019-03-15 | Anaerobic digestion reactor |
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| Publication Number | Publication Date |
|---|---|
| CN209872960U true CN209872960U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920331080.7U Active CN209872960U (en) | 2019-03-15 | 2019-03-15 | Anaerobic digestion reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988562A (en) * | 2022-04-29 | 2022-09-02 | 重庆大学 | Sewage and wastewater treatment system, biological reaction tank and tank body |
-
2019
- 2019-03-15 CN CN201920331080.7U patent/CN209872960U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988562A (en) * | 2022-04-29 | 2022-09-02 | 重庆大学 | Sewage and wastewater treatment system, biological reaction tank and tank body |
| CN114988562B (en) * | 2022-04-29 | 2024-05-07 | 重庆大学 | Sewage and wastewater treatment system, biological reaction tank and tank body |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An anaerobic digestion reactor Effective date of registration: 20201223 Granted publication date: 20191231 Pledgee: Hefei Xingtai financing guarantee Group Ltd. Pledgor: ANHUI ASIA-PACIFIC ENVIRONMENTAL ENGINEERING TECH Co.,Ltd. Registration number: Y2020980009780 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230731 Granted publication date: 20191231 Pledgee: Hefei Xingtai financing guarantee Group Ltd. Pledgor: ANHUI ASIA-PACIFIC ENVIRONMENTAL ENGINEERING TECH CO.,LTD. Registration number: Y2020980009780 |