CN210683774U - Large-scale integral horizontal type continuous methane dry fermentation device - Google Patents
Large-scale integral horizontal type continuous methane dry fermentation device Download PDFInfo
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- CN210683774U CN210683774U CN201920797394.6U CN201920797394U CN210683774U CN 210683774 U CN210683774 U CN 210683774U CN 201920797394 U CN201920797394 U CN 201920797394U CN 210683774 U CN210683774 U CN 210683774U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The utility model belongs to the technical field of dry fermentation, in particular to a large-scale integral horizontal type continuous methane dry fermentation device. The device comprises a feeding cabin, a methane cabin steam heating heat exchanger and a methane fermentation cabin, wherein the feeding cabin is sequentially connected with the methane cabin steam heating heat exchanger and the methane fermentation cabin through a methane cabin feeding pipe, the included angle between the central axis of the methane fermentation cabin and the horizontal line is 10-15 degrees, a methane cabin main spiral shaft, a methane cabin main spiral wing piece and a methane cabin transverse wing piece are arranged in the methane fermentation cabin, the methane cabin main spiral shaft is fixed on the central axis of the methane fermentation cabin, the methane cabin main spiral wing piece surrounds the outer part of the methane cabin main spiral shaft, the methane cabin main spiral wing piece is a piece-shaped object which is uniformly arranged in the radial direction, and one end of the methane cabin main spiral shaft extends to the other end; the horizontal wing of methane tank runs through the main spiral wing of methane tank, and both ends are fixed in the feed end and the discharge end of methane fermentation tank respectively. Thereby, continuous feed biogas fermentation can be realized.
Description
The technical field is as follows:
the utility model belongs to the technical field of dry fermentation, more specifically say, relate to a large-scale whole horizontal marsh gas dry fermentation device in succession.
Background art:
under the large background of energy shortage, global warming and ecological environment deterioration, energy conservation and emission reduction, efficient resource utilization and new energy development become urgent matters all over the world. According to statistics, China has become the world with the largest output of solid organic wastes, wherein the annual output of crop straws reaches more than 7 hundred million tons, fresh materials such as ensiled stems and leaves and the like can be supplied for about 10 million tons, forestry wastes such as sawdust, wood shavings and the like are 16 million tons, the discharge amount of livestock excrement is 134 million tons, and the urban garbage is more than 7 million tons. With the rapid development of industrial and agricultural production and the increase of population, the amount of these wastes is increasing at a rate of 5% to 10% per year. The organic solid waste is not properly disposed, which not only causes the waste of resources, but also pollutes the environment. Crop straws, livestock and poultry manure and municipal domestic waste contain huge energy which can be utilized. Among the technologies for resource utilization of solid organic wastes, the dry fermentation technology of methane is a hot spot and a key development direction of domestic and foreign research.
Dry anaerobic fermentation generally means that the dry matter content of fermentation raw materials is more than 20-40%, the raw materials are in a solid state or a semi-solid state, the fermentation biogas slurry produced in the fermentation process is less in sewage, the pollutant discharge is greatly reduced, and the dry fermentation has the other characteristic that the methane content is high and can reach more than 60%. The traditional large dry fermentation cabin is large, the dry matter content of materials is high, the materials are not uniformly stirred, and most biogas projects only adopt intermittent fermentation and cannot continuously produce. After the acidized hydrolyzed materials are taken out of the tank, the temperature of the materials is reduced through a screw pump and a pipeline process, and in order to reduce bacterial decay and ensure community stability, the materials are heated before a methane fermentation tank, so that the gas yield in the early stage of fermentation can be greatly improved.
The utility model has the following contents:
the utility model provides a large-scale whole horizontal continuous marsh gas dry fermentation device, which can realize continuous feeding marsh gas fermentation.
In order to achieve the above object, the utility model adopts the following technical scheme:
a large-scale integral horizontal type continuous methane dry fermentation device comprises a feeding cabin, a methane cabin steam heating heat exchanger and a methane fermentation cabin, wherein the feeding cabin is sequentially connected with the methane cabin steam heating heat exchanger and the methane fermentation cabin through a methane cabin feeding pipe, the included angle between the central axis of the methane fermentation cabin and the horizontal line is 10-15 degrees, a methane cabin main spiral shaft, a methane cabin main spiral wing and a methane cabin transverse wing are arranged in the methane fermentation cabin, the methane cabin main spiral shaft is fixed on the central axis of the methane fermentation cabin, the methane cabin main spiral wing surrounds the outer part of the methane cabin main spiral shaft, the methane cabin main spiral wing is a radially and uniformly arranged sheet-shaped object, and one end of the methane cabin main spiral shaft extends to the other end; the horizontal wing of methane tank runs through the main spiral wing of methane tank, and both ends are fixed in the feed end and the discharge end of methane fermentation tank respectively.
The large-scale integral horizontal continuous methane dry fermentation device is characterized in that the feeding cabin and the methane fermentation cabin are cylindrical cabin bodies, a stirring paddle of the feeding cabin is fixed at the top of the feeding cabin, a heat insulation layer is arranged on the outer layer of the feeding cabin, and a feeding screw pump is arranged on a methane cabin feeding pipe between the feeding cabin and the methane cabin steam heating heat exchanger.
The middle part of the main screw shaft of the methane tank is provided with a sliding bearing, and the main screw shaft of the methane tank is fixedly connected with the inner wall of the methane fermentation tank through the sliding bearing.
According to the large-scale integral horizontal type continuous methane dry fermentation device, a gap with the width of 4-8 mm is formed between the inner wall of the methane fermentation cabin and the edge of the main spiral wing of the methane fermentation cabin.
The large-scale integral horizontal continuous methane dry fermentation device is characterized in that a methane cabin inlet pipe is connected with a feed inlet of a methane fermentation cabin, an exhaust pipe and a discharge pipe are arranged on a discharge outlet of the other end of the methane fermentation cabin, a feed end and a discharge end of the methane fermentation cabin are respectively provided with a sealing disc, the exhaust pipe and the discharge pipe are connected with the sealing disc of the discharge end, and two ends of a transverse fin of the methane cabin are respectively fixedly connected with the sealing discs of the feed end and the discharge end.
The utility model has the advantages and beneficial effect:
1. the utility model realizes the continuous feeding biogas fermentation;
2. the utility model discloses a double-phase disconnect-type fermentation (first stage hydrolytic acidification, the marsh gas fermentation is produced to the second stage), guarantees the reaction environment of fermentation fungus crowd, avoids the impact and the suppression of acidizing fungus and low pH value to the methane looks.
3. The utility model discloses a special stirring rake in methane cabin realizes the inoculation of even compounding and new and old material to and the propelling movement of whole material, make the fermentation more thorough.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an axial view of the feed chamber and the feed chamber paddles.
Fig. 3 is an axial view of the main spiral wing and the transverse wing of the methane fermentation tank.
Fig. 4 is a schematic view of the structure of the main helical fin and the lateral fin.
In the figure, 1, a methane fermentation cabin; 2. a main spiral wing panel of the methane tank; 3. a methane tank main screw shaft; 4. a methane tank transverse fin; 5. a mechanical sealing disc is arranged at the feed end of the methane tank; 6. a mechanical sealing disc is arranged at the discharge end of the methane tank; 7. a methane tank exhaust pipe; 8. a methane tank discharge pipe; 9. a feeding compartment; 10. a feeding cabin stirring paddle; 11. a methane tank feed pipe; 12: a feed screw pump; 13. a methane tank steam heating heat exchanger; 14. a methane tank stirring motor; 15. a sliding bearing.
The specific implementation mode is as follows:
as can be seen from figures 1-4, the utility model discloses a feeding cabin 9, methane cabin steam heating heat exchanger 13, methane fermentation cabin 1 (be referred to for short as the methane cabin), feeding cabin 9 links to each other with methane cabin steam heating heat exchanger 13, methane fermentation cabin 1 in proper order through methane cabin inlet pipe 11, the central axis in methane fermentation cabin 1 is 10 ~ 15 with the contained angle of water flat line, this angle can make the under-deck zymotic fluid constantly lean on gravity to flow back to fermentation cabin bottom, accomplish the inoculation of new material simultaneously. A methane tank main screw shaft 3, a methane tank main screw wing piece 2 and a methane tank transverse wing piece 4 are arranged in the methane fermentation tank 1, the methane tank main screw shaft 3 is fixed on the central axis of the methane fermentation tank 1, one end of the methane tank main screw shaft is connected with a methane tank stirring motor 14, the methane tank main screw wing piece 2 surrounds the outside of the methane tank main screw shaft 3, the methane tank main screw wing piece 2 is a piece-shaped object which is uniformly arranged in the radial direction, and one end of the methane tank main screw shaft 3 extends to the other end; the methane tank transverse wing piece 4 penetrates through the methane tank main spiral wing piece 2, and two ends of the methane tank transverse wing piece 4 are respectively fixed at the feeding end and the discharging end of the methane fermentation tank 1.
The feeding cabin 9 and the methane fermentation cabin 1 are cylindrical cabin bodies, a feeding cabin stirring paddle 10 is fixed at the top of the feeding cabin 9, a heat insulation layer is arranged on the outer layer of the feeding cabin 9, and a feeding screw pump 12 is arranged on a methane cabin feeding pipe 11 between the feeding cabin 9 and a methane cabin steam heating heat exchanger 13.
The middle part of the main screw shaft 3 of the methane tank is provided with a sliding bearing 15, and the main screw shaft 3 of the methane tank is fixedly connected with the inner wall of the methane fermentation tank 1 through the sliding bearing 15 and is used for sharing the weight of the main screw shaft 3 of the load-bearing methane tank.
A gap with the width of 4-8 mm is arranged between the inner wall of the methane fermentation cabin 1 and the edge of the main spiral wing piece 2 of the methane fermentation cabin.
Methane cabin inlet pipe 11 links to each other with the feed inlet of methane fermentation cabin 1, it arranges material pipe 8 to set up methane cabin blast pipe 7 and methane cabin on the discharge gate of the 1 other end in methane fermentation cabin, the feed end in methane fermentation cabin 1 sets up methane cabin feed end mechanical seal dish 5, the discharge end in methane fermentation cabin 1 sets up methane cabin discharge end mechanical seal dish 6, methane cabin blast pipe 7 and the methane cabin of methane fermentation cabin 1 are arranged material pipe 8 and are linked to each other with the methane cabin discharge end mechanical seal dish 6 of discharge end, the both ends of the horizontal fin 4 in methane cabin respectively with methane cabin feed end mechanical seal dish 5, methane cabin discharge end mechanical seal dish 6 is fixed continuous.
When the device works, a fermented biomass mixture is put into a feeding cabin 9 according to a proportion, the material is made uniform under the stirring of a stirring paddle 10 of the feeding cabin, then the device is stood for three days for hydrolytic acidification, and is stirred again for entering a methane fermentation cabin 1 for fermentation, a sealing disc is respectively arranged at a feeding port and a discharging port of the feeding cabin 9 and is in dynamic and static sealing connection with the feeding cabin 9 through mechanical sealing, the material leaves the feeding cabin 9 along a feeding pipe 11 of the methane cabin, is pressurized by a feeding screw pump 12 and is heated by a steam heating heat exchanger 13 of the methane cabin, and enters the methane fermentation cabin 1 through the feeding pipe 11 of the methane cabin, a mechanical sealing disc 5 at a feeding end and a mechanical sealing disc 6 at a discharging end of the methane fermentation cabin 1 are respectively arranged at the feeding end and the discharging end of the methane fermentation cabin, the acidified material enters the methane fermentation cabin 1 through mechanical sealing, under the pushing of a main spiral wing 2 of the methane cabin and the stirring of a transverse, the methane fermentation tank is characterized in that the methane fermentation tank is pushed towards the direction of a discharge hole of the methane fermentation tank 1 along the direction of a central shaft of the methane fermentation tank 1, the whole methane fermentation tank 1 is obliquely and horizontally placed in the fermentation process, fermentation liquor generated in the fermentation process flows to the lower part of the methane fermentation tank 1 along gaps formed in the main spiral wing pieces 2 of the methane tank and the inner wall of the methane fermentation tank 1, the fermentation liquor flowing to the bottom of the tank body is stirred under the common stirring action of the main spiral wing pieces 2 of the methane tank and the transverse wing pieces 4 of the methane tank in a stirring state to complete the stirring of new and old materials and realize the uniform inoculation and the homogenization of the materials, the fermented materials are pushed to the position of a methane tank discharge pipe 8 by the main spiral wing pieces 2 of the methane tank, the materials leave the methane fermentation tank 1 along the methane tank discharge pipe 8, and methane generated in the methane fermentation process.
Claims (4)
1. A large-scale integral horizontal type continuous methane dry fermentation device is characterized by comprising a feeding cabin, a methane cabin steam heating heat exchanger and a methane fermentation cabin, wherein the feeding cabin is sequentially connected with the methane cabin steam heating heat exchanger and the methane fermentation cabin through a methane cabin feeding pipe, the included angle between the central axis of the methane fermentation cabin and the horizontal line is 10-15 degrees, a methane cabin main spiral shaft, a methane cabin main spiral wing and a methane cabin transverse wing are arranged in the methane fermentation cabin, the methane cabin main spiral shaft is fixed on the central axis of the methane fermentation cabin, the methane cabin main spiral wing surrounds the outer part of the methane cabin main spiral shaft, the methane cabin main spiral wing is a sheet-shaped object which is radially and uniformly arranged, and one end of the methane cabin main spiral shaft extends to the other end; the horizontal wing panel of the methane tank penetrates through the main spiral wing panel of the methane tank, and two ends of the horizontal wing panel of the methane tank are respectively fixed at the feed end and the discharge end of the methane fermentation tank;
the middle part of the main screw shaft of the methane cabin is provided with a sliding bearing, and the main screw shaft of the methane cabin is fixedly connected with the inner wall of the methane fermentation cabin through the sliding bearing.
2. The large-scale integral horizontal type continuous methane dry fermentation device according to claim 1, wherein the feeding cabin and the methane fermentation cabin are cylindrical cabin bodies, the top of the feeding cabin is fixed with a stirring paddle of the feeding cabin, the outer layer of the feeding cabin is provided with an insulating layer, and a feeding screw pump is arranged on a methane cabin feeding pipe between the feeding cabin and the methane cabin steam heating heat exchanger.
3. The large-scale integral horizontal type continuous methane dry fermentation device according to claim 1, wherein a gap with a width of 4-8 mm is arranged between the inner wall of the methane fermentation cabin and the edge of the main spiral wing of the methane fermentation cabin.
4. The large-scale integral horizontal type continuous methane dry fermentation device according to claim 1, wherein a feed pipe of the methane tank is connected with a feed inlet of the methane fermentation tank, an exhaust pipe and a discharge pipe are arranged on a discharge outlet at the other end of the methane fermentation tank, the feed end and the discharge end of the methane fermentation tank are both provided with a sealing disc, the exhaust pipe and the discharge pipe are connected with the sealing disc at the discharge end, and two ends of a transverse fin of the methane tank are respectively fixedly connected with the sealing discs at the feed end and the discharge end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920797394.6U CN210683774U (en) | 2019-05-30 | 2019-05-30 | Large-scale integral horizontal type continuous methane dry fermentation device |
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| CN201920797394.6U CN210683774U (en) | 2019-05-30 | 2019-05-30 | Large-scale integral horizontal type continuous methane dry fermentation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679244A (en) * | 2021-01-22 | 2021-04-20 | 浙江师范大学 | Kitchen waste integrated treatment method based on biotechnology and energy coupling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112679244A (en) * | 2021-01-22 | 2021-04-20 | 浙江师范大学 | Kitchen waste integrated treatment method based on biotechnology and energy coupling |
| CN112679244B (en) * | 2021-01-22 | 2022-07-12 | 浙江师范大学 | Kitchen waste integrated treatment method based on biotechnology and energy coupling |
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