CN211255906U

CN211255906U - Novel biogas stirring anaerobic fermentation device

Info

Publication number: CN211255906U
Application number: CN201922183772.4U
Authority: CN
Inventors: 罗丽; 李艳秋; 高明; 陈红瑞; 于秋菊
Original assignee: Zhongche Environmental Technology Co ltd
Current assignee: Zhongche Environmental Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-14
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a novel marsh gas stirring anaerobic fermentation device, include the main part reactor that is covered by the device clamp cover, be formed with the air chamber of closure between the two, the main part reactor is provided with the marsh gas backward flow jet that is linked together with the air chamber, and the device presss from both sides the cover outside and is provided with the pump package, the pump package both ends are connected to main part reactor and air chamber respectively through the pipeline, be used for with the air chamber is taken out to marsh gas in the main part reactor, the utility model discloses simple structure, marsh gas stirring operation is stable, and is efficient.

Description

Novel biogas stirring anaerobic fermentation device

Technical Field

The utility model relates to an anaerobic reaction device, in particular to a novel biogas stirring anaerobic fermentation device.

Background

At present, biogas engineering in China mainly comprises a completely mixed anaerobic fermentation process, which is commonly used for treating raw materials with high suspended solid content, such as slaughter wastewater, treatment of livestock and poultry manure in farms such as cattle, pigs, chickens and the like, and high-concentration organic wastewater treatment engineering with more municipal domestic sludge, and the like, a reactor used in the process is usually provided with a stirring device to enable fermentation raw materials and microorganisms to be in a completely mixed state, the existing anaerobic reaction device mainly adopts three stirring modes, namely mechanical stirring, hydraulic circular stirring and biogas stirring, the mechanical stirring and the hydraulic circular stirring all need to provide external force, the energy consumption is high, and the mixing effect is poor; biogas stirring usually utilizes biogas (mainly methane and carbon dioxide) generated in an anaerobic device, the biogas is generated by a compressor to form aeration at the bottom of an anaerobic reactor, and the material in the anaerobic reactor is disturbed to achieve the purpose of homogenization.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel marsh gas stirring anaerobic fermentation device has solved the problem in the background art, its technical scheme as follows:

the device comprises a main body reactor covered by a device jacket, a closed air chamber is formed between the main body reactor and the device jacket, the main body reactor is provided with a biogas backflow jet orifice communicated with the air chamber, a pump set is arranged outside the device jacket, and two ends of the pump set are respectively connected to the main body reactor and the air chamber through pipelines and are used for pumping biogas in the main body reactor to the air chamber.

Preferably, the methane outlet is connected with a methane storage device through a pipeline.

Preferably, the biogas storage device comprises a water seal device and a biogas storage tank, the water seal device and the biogas storage tank are connected through a pipeline, the water seal device is connected with the biogas outlet through a pipeline and used for avoiding biogas backflow and purifying biogas, and the biogas storage tank is used for storing biogas.

Preferably, the bottom of the main body reactor is provided with a discharge outlet.

Preferably, the apparatus jacket is provided with a feed inlet to the bulk reactor.

Preferably, the device jacket is provided with a methane outlet, and the methane outlet is connected with a methane storage device through a pipeline.

Preferably, the gas chamber is connected with the biogas return jet orifice through a biogas return channel.

Preferably, the biogas return injection ports are distributed at the high, middle and low layers of the main reactor, and each layer is provided with at least two biogas return injection ports.

Preferably, the methane gas backflow jet ports on each layer are uniformly or non-uniformly arranged at intervals.

Preferably, each layer is provided with two methane backflow jet ports, and the two methane backflow jet ports are arranged in a crossed and opposite mode.

Preferably, the device jacket is externally provided with a methane storage device connected with the device jacket, the methane storage device comprises a water sealing device and a methane storage tank connected with the water sealing device, the water sealing device is used for avoiding methane backflow and purifying methane, and the methane storage tank is used for storing methane.

Preferably, a pipeline between the device jacket and the biogas storage device is provided with a pressure detector and a pressure relief valve, wherein the pressure detector is used for monitoring the pressure of the gas chamber, and the pressure relief valve is used for controlling the opening and closing of the pipeline.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the generated biogas plays a role in preserving heat of the main reactor through the biogas backflow channel, and the reaction activity is ensured to a certain extent;

2. through setting up marsh gas backward flow jet, realized the spiral of material and mixed, enlarged the material and the contact surface of microorganism in level and vertical direction, can promote reaction efficiency greatly, and this spiral sets up marsh gas stirring type and compares with traditional marsh gas stirring, and the aeration hole blocks up the problem and obtains better solution.

Drawings

FIG. 1 is a schematic structural diagram of the novel biogas stirring anaerobic fermentation device;

FIG. 2 is a schematic view of the internal structure of the main reactor;

the parts in the figure are:

1. a main body reactor; 2. a biogas reflux jet orifice; 3. an air chamber; 4. a pump group; 5. a biogas outlet; 6. a feed inlet; 7. a pressure detector; 8. a device jacket; 9. a water seal device; 10. a biogas storage tank; 11. a discharge outlet; 12. a biogas return channel; 13. a bottom portion.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

The novel biogas stirring anaerobic fermentation device shown in fig. 1 comprises a main body reactor 1 covered by a device jacket 8, wherein the main body reactor 1 and the device jacket 8 are both cylindrical and hollow, the main body reactor 1 is installed at the upper end of the bottom 13 of the device jacket 8, the lower end of the bottom 13 is provided with a discharge port 11, a closed air chamber 3 is formed between the top of the outside of the main body reactor 1 and the upper part of the inside of the device jacket 8, and a biogas backflow channel 12 communicated with the air chamber 3 is formed between the cylinder wall of the device jacket 8 and the cylinder wall of the main body reactor 1.

As shown in fig. 1 and 2, the main body reactor 1 is provided with biogas return injection ports 2, the gas chamber 3 is connected with the biogas return injection ports 2 through biogas return channels 12, the biogas return injection ports 2 are distributed at three layers, namely, a high layer, a middle layer and a low layer of the main body reactor 1, each layer is provided with at least two biogas return injection ports 2, the biogas return injection ports 2 at each layer are uniformly or non-uniformly spaced, and the two biogas return injection ports 2 at each layer are arranged in a crossed and opposite manner by taking the center line of the main body reactor 1 as the center.

It should be noted that the biogas reflux jet orifices 2 distributed at the high, middle and low three-layer positions of the main reactor 1 respectively correspond to the supernatant layer, the active layer and the sludge layer of the material under the static fermentation condition, biogas can enter the main reactor 1 through the biogas reflux jet orifices 2 to form a spiral mixing shape for the material, so that the contact area of the material and the microorganism in the horizontal and vertical directions is enlarged, and simultaneously, compared with the traditional biogas stirring mode, the spiral biogas stirring mode can better solve the problem of blockage of aeration holes.

As shown in fig. 1, a pump unit 4 is further installed outside the device jacket 8, the pump unit 4 is respectively connected to the main body reactor 1 and the air chamber 3 through a pipeline, the pump unit 4 pumps out biogas in the main body reactor 1 and feeds the biogas into the air chamber 3 for increasing the internal pressure of the air chamber 3, a biogas outlet 5 is arranged at the top of the air chamber 3 on the device jacket 8, the biogas outlet 5 is used for discharging biogas in the air chamber 3, the biogas outlet 5 is connected to a biogas storage device through a pipeline, a pressure detector 7 and a pressure relief valve are arranged on the pipeline, the pressure detector 7 is used for monitoring the pressure of the air chamber 3, the pressure relief valve is used for controlling the opening and closing of the pipeline, when the pressure detector 7 monitors that the biogas pressure generated in the air chamber 3 is lower than 0.15MPa, the pressure relief valve of the biogas outlet 5 is closed, and the biogas yield in the air chamber 3 is gradually increased, namely, when the pressure reaches 0.15MPa, the pressure relief valve of the methane outlet 5 is automatically opened, the generated methane is released and discharged, and when the pressure in the gas chamber 3 is lower than 0.15MPa again, the pressure relief valve of the methane outlet 5 is automatically closed, thus the circulation is continuously performed.

The biogas storage device comprises a water sealing device 9 and a biogas storage tank 10 connected with the water sealing device, the water sealing device 9 is connected with the biogas outlet 5 through a pipeline, the water sealing device 9 is used for avoiding backflow of biogas and purifying biogas, and the biogas storage tank 10 is used for storing biogas.

The working principle is as follows: organic slurry such as livestock and poultry manure or sludge enters a main body reactor 1 through a feed inlet 6 of a jacket 8 of the device to contact with microorganisms, fermentation reaction is started, biogas in the main body reactor 1 is pumped out and sent into a gas chamber 3 by a pump unit 4, when the pressure in the gas chamber 3 is less than 0.15MPa, the generated biogas enters a biogas backflow channel 12, the biogas can enter the main body reactor 1 through a biogas injection port 2 along with the increase of the biogas amount, the biogas entering from the biogas injection ports 2 at two sides of the main body reactor 1 respectively drives materials to form a spiral mixed shape, the pressure in the device is increased along with the continuous increase of the biogas yield along with the reaction, when the pressure in the gas chamber 3 exceeds 0.15MPa, a pressure relief valve of a biogas outlet 5 is automatically opened, and part of the biogas is released and then enters a biogas storage tank 10 through a water seal device 9; when the pressure of the gas chamber 3 is lower than 0.15Mpa, the pressure release valve of the methane outlet 5 is automatically closed, and the process is circulated continuously until the fermentation reaction is finished.

In addition, the online cleaning function can be realized along with the continuous spraying of the biogas, and the operation process does not need to intentionally empty the materials in the main reactor 1 to stop the reaction process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel biogas stirring anaerobic fermentation device is characterized in that: the device comprises a main body reactor covered by a device jacket, a closed air chamber is formed between the main body reactor and the device jacket, the main body reactor is provided with a biogas backflow jet orifice communicated with the air chamber, a pump set is arranged outside the device jacket, and two ends of the pump set are respectively connected to the main body reactor and the air chamber through pipelines and are used for pumping biogas in the main body reactor to the air chamber.

2. The novel biogas stirring anaerobic fermentation device of claim 1, characterized in that: the bottom of the main body reactor is provided with a discharge outlet.

3. The novel biogas stirring anaerobic fermentation device of claim 1, characterized in that: the device jacket is provided with a feed inlet leading to the main reactor.

4. The novel biogas stirring anaerobic fermentation device of claim 1, characterized in that: the device jacket is provided with a methane outlet which is connected with a methane storage device through a pipeline.

5. The novel biogas stirring anaerobic fermentation device of claim 1, characterized in that: the air chamber is connected with a methane reflux jet orifice through a methane reflux channel.

6. The novel biogas stirring anaerobic fermentation device of claim 1, characterized in that: the biogas reflux jet orifices are distributed at the high, middle and low layers of the main reactor, and each layer is provided with at least two biogas reflux jet orifices.

7. The novel biogas stirring anaerobic fermentation device of claim 6, characterized in that: the methane reflux jet ports on each layer are uniformly or non-uniformly arranged at intervals.

8. The novel biogas stirring anaerobic fermentation device of claim 7, characterized in that: each layer is provided with two methane backflow jet ports, and the two methane backflow jet ports are arranged in a crossed and opposite mode.

9. The novel biogas stirring anaerobic fermentation device of claim 1, characterized in that: the device is characterized in that a biogas storage device connected with the device jacket is arranged outside the device jacket, the biogas storage device comprises a water sealing device and a biogas storage tank connected with the water sealing device, the water sealing device is used for avoiding biogas backflow and purifying biogas, and the biogas storage tank is used for storing biogas.

10. The novel biogas stirring anaerobic fermentation device of claim 9, characterized in that: and a pipeline between the device jacket and the biogas storage device is provided with a pressure detector and a pressure relief valve, the pressure detector is used for monitoring the pressure of the gas chamber, and the pressure relief valve is used for controlling the opening and closing of the pipeline.