CN211035927U - Double-layer anaerobic fermentation device - Google Patents
Double-layer anaerobic fermentation device Download PDFInfo
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- CN211035927U CN211035927U CN201922000139.7U CN201922000139U CN211035927U CN 211035927 U CN211035927 U CN 211035927U CN 201922000139 U CN201922000139 U CN 201922000139U CN 211035927 U CN211035927 U CN 211035927U
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- 238000000855 fermentation Methods 0.000 title claims abstract description 99
- 230000004151 fermentation Effects 0.000 claims abstract description 78
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- 239000007787 solid Substances 0.000 abstract description 11
- 238000007599 discharging Methods 0.000 abstract description 10
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Abstract
The utility model discloses a double-layer anaerobic fermentation device, which comprises a fermentation reaction body, wherein the fermentation reaction body comprises an upper layer groove body and a lower layer groove body; a partition wall is arranged between the upper-layer tank body and the lower-layer tank body, wherein the width of the partition wall is the same as that of the fermentation reaction body; and a first overflow hole and a second overflow hole are formed on two sides of the partition wall. The reaction device of the utility model adopts the design of the upper and the lower double-layer groove bodies, which reduces the occupied area of the fermentation reaction device by nearly 50 percent and the total heat dissipation area, and makes the fermentation reaction temperature easier to control; the materials in the upper tank body flow into the lower tank body through the overflow port by intermittent or continuous stirring of the two stirring devices, and are pumped out of the reaction device through the discharging device, so that the materials flow in the reaction device and are fully and uniformly mixed, thereby achieving the purpose of complete reaction; simple structure, simple maintenance and operation, no solid sediment, no waste gas release.
Description
Technical Field
The utility model relates to an anaerobic fermentation device, in particular to a double-layer anaerobic fermentation device.
Background
With the increasing serious pollution problem caused by the discharge of organic wastes (such as kitchen wastes, livestock and poultry manure, agricultural wastes, organic domestic wastes, sludge generated by sewage treatment plants and the like), the treatment of organic waste pollution by adopting an anaerobic fermentation technology becomes an important subject of social sustainable development.
At present, the anaerobic fermentation technology is adopted to treat organic waste, and mainly comprises a plug flow type anaerobic fermentation device, a horizontal baffling type anaerobic fermentation device, a hydraulic type anaerobic fermentation device, a full-mixing anaerobic fermentation device and the like, and the wet full-mixing process is dominant; according to the difference of solid content of material in the reaction device, the method is divided into two categories of wet method and dry method, the solid content of the material fermented by the wet method is 4-12%, and the solid content of the material fermented by the dry method can reach 20-35%. The wet fermentation generally adopts a vertical cylindrical full-mixing type reaction device, and the solid content of the fermentation material is low, so that the volume of the reaction device required by unit organic waste is large, the occupied area is large, the energy consumption is high, the investment is large, and the gas yield per unit volume is low.
The advantages of dry fermentation when used for waste treatment and residual waste treatment are: the method can be used for treating organic wastes with high solid content, the raw material preparation treatment cost before fermentation is low, impurities do not need to be further removed before the organic wastes are metered and put into a fermentation reactor, but the horizontal dry fermentation device generally adopts a horizontal cuboid structure or a horizontal cylinder structure, the whole size of the fermentation tank is large, the occupied area is wide, the fermentation tank is difficult to arrange in a factory with tight land, the whole structure is slender, reaction materials flow in the fermentation device difficultly, the specific surface area is large, the heat dissipation area of the reaction device is large, the stable control of the temperature during the fermentation reaction is not facilitated, meanwhile, in order to ensure that the fermentation materials obtain sufficient reaction time, the general reaction device is very long, the stirring device of the reaction device is correspondingly long, the design is complex, the mechanical processing difficulty is large, the cost is high, and the investment is large. For example, the invention 'a method and a device for producing biogas by using municipal sludge and organic matter dry anaerobic fermentation' with Chinese patent application number of 201010288462.X adopts a double-layer helical ribbon stirrer in the technical scheme, and still can not enable the material to reach higher solid content. Therefore, the cavity structure and the stirring arrangement design mode of the reactor have great influence on the treatment effect of the materials.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the defects of the prior art and provide a double-layer anaerobic fermentation device.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model relates to a double-layer anaerobic fermentation device, which comprises a fermentation reaction body, wherein,
the fermentation reaction body comprises an upper-layer tank body and a lower-layer tank body;
a partition wall is arranged between the upper layer tank body and the lower layer tank body, wherein,
the width of the partition wall is the same as that of the fermentation reaction body;
and a first overflow hole and a second overflow hole are formed on two sides of the partition wall.
As a preferred technical scheme of the utility model, a feed inlet is arranged at the end part of the upper layer groove body;
and a discharge hole is arranged at the end part of the lower-layer groove body.
As a preferred technical proposal of the utility model, the upper tank body and the lower tank body are both provided with stirring shafts, wherein,
the stirring shaft is provided with a stirring paddle;
and the end part of the stirring shaft is provided with a stirring motor.
As a preferred technical scheme of the utility model, the bottoms of the upper layer tank body and the lower layer tank body are both arranged to be bottom surface arc structures; the first overflow hole and the second overflow hole are separated from the cavity of the upper layer tank body through overflow hole enclosing walls.
As a preferred technical proposal of the utility model, the top of the fermentation reaction body is provided with a safe release port; a first temperature sensor, a first level indicator and a gas collecting opening are sequentially arranged at the top of the fermentation reaction body and one side of the safe release opening.
As an optimized technical proposal of the utility model, the two sides of the fermentation reaction body are respectively provided with a second temperature sensor and a second charge level indicator.
The utility model discloses the beneficial effect who reaches is: the reaction device of the utility model adopts the design of the upper and the lower double-layer groove bodies, which reduces the occupied area of the fermentation reaction device by nearly 50 percent and the total heat dissipation area, and makes the fermentation reaction temperature easier to control; the materials in the upper tank body flow into the lower tank body through the overflow port by intermittent or continuous stirring of the two stirring devices, and are pumped out of the reaction device through the discharging device, so that the materials flow in the reaction device and are fully and uniformly mixed, thereby achieving the purpose of complete reaction; the solid content of the fermentation material in the reactor can reach 20-35% at most, and the concentration of anaerobic microorganisms is improved to a great extent, so that the gas production rate per unit volume is greatly improved; simple structure, simple maintenance and operation, no solid sediment, no waste gas release.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
fig. 3 is a third schematic structural diagram of the present invention;
FIG. 4 is a fourth schematic structural diagram of the present invention;
in the figure: 1. a fermentation reaction body; 2. an upper tank body; 3. a lower tank body; 4. a partition wall; 5. a first overflow aperture; 6. a second overflow aperture; 7. a stirring motor; 8. a stirring shaft; 9. a stirring paddle; 10. a safety release port; 11. a first temperature sensor; 12. a second temperature sensor; 13. a first level indicator; 14. a second level gauge; 15. a gas collection port; 16. a feed inlet; 17. a discharge port; 18. the bottom surface is of an arc structure; 19. an overflow aperture enclosure.
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.
Examples
As shown in figures 1-4, the utility model provides a double-layer anaerobic fermentation device, which comprises a fermentation reaction body 1, wherein,
the fermentation reaction body 1 comprises an upper tank body 2 and a lower tank body 3;
a partition wall 4 is arranged between the upper tank body 2 and the lower tank body 3, wherein,
the width of the partition wall 4 is the same as that of the fermentation reaction body 1;
a first overflow hole 5 and a second overflow hole 6 are formed at both sides of the partition wall 4.
Further, a feed inlet 16 is arranged at the end part of the upper layer tank body 2;
the end part of the lower layer tank body 3 is provided with a discharge hole 17.
Stirring shafts 8 are respectively arranged in the upper tank body 2 and the lower tank body 3, wherein,
the stirring shaft 8 is provided with a stirring paddle 9;
the end part of the stirring shaft 8 is provided with a stirring motor 7.
The bottoms of the upper tank body 2 and the lower tank body 3 are both provided with bottom surface arc structures 18; the first overflow hole 5 and the second overflow hole 6 are separated from the cavity of the upper layer tank body 2 through an overflow hole enclosing wall 19.
The top of the fermentation reaction body 1 is provided with a safe release port 10; a first temperature sensor 11, a first level indicator 13 and a gas collecting port 15 are sequentially arranged at the top of the fermentation reaction body 1 and one side of the safety release port 10.
A second temperature sensor 12 and a second level indicator 14 are respectively arranged at both sides of the fermentation reaction body 1.
Specifically, the fermentation reaction body 1 is formed by overlapping two concrete rectangular grooves on the top and covering, namely an upper groove body 2 and a lower groove body 3; the mechanical stirring device consists of two mechanical stirrers which are respectively arranged inside the fermentation upper tank body 2 and the fermentation lower tank body 3 in parallel.
Respectively leave an overflow hole and be first overflow hole 5 and second overflow hole 6, overflow hole enclosure 19 is established to the overflow hole periphery, and the overflow hole enclosure 19 height keeps unanimous with the liquid level height of upper material, forms two independent reaction spaces of non-closed in the cavity inside of fermentation reaction body 1, upper cell body 2 and lower floor cell body 3 promptly. Wherein the cross section of each groove body is square; the bottom surface of each trough body is an arc-shaped structure 18.
The mechanical stirrer is composed of a stirring motor 7, a stirring shaft 8 and a plurality of stirring paddles 9 arranged on the stirring shaft, wherein the stirring motor 7 is arranged on one side of the outside of the fermentation reaction body, the stirring motor 7 is connected with the stirring shaft 8, and the through shaft of the stirring shaft 8 penetrates through the inside of the fermentation reaction body 1. The stirring shafts 7 are arranged centrally on the cross section in the respective separate reaction space. The stirring paddle 9 in each layer of tank body is higher than the highest liquid level of the fermentation material when stirring to the highest position.
The outer surface of the upper layer tank body opposite to the fermentation reaction body 1 and the first overflow hole 5 and the second overflow hole 6 is provided with a feed inlet 16, and the outer surface of the lower layer tank body is provided with a discharge outlet 17. The outer surface of the fermentation reaction body 1 is also provided with a safe release port 10, a first temperature sensor 11, a second temperature sensor 12, a first material level indicator 13, a second material level indicator 14 and a gas collecting port 15.
The working principle of treating organic garbage (organic garbage part in municipal domestic waste) or kitchen garbage by using the fermentation reaction device comprises the following specific flows: organic garbage (or kitchen garbage) is subjected to simple crushing pretreatment, and impurities are not required to be removed, and the organic garbage (or the kitchen garbage) is directly fed into the inner cavity of the fermentation reaction body 1 through the feeding hole 16 by the feeding conveying device. The feeding operation may be continuous or semi-continuous. Get into fermentation reaction body 1's material, at first get into upper cell body 2 inside, because the wall effect of inside partition wall 4, must pass through first overflow hole 5 and second overflow hole 6 round overflow hole enclosure 19, after the overflow, just can reach lower floor's cell body 3 inside, is taken reaction unit out by discharge gate 17 through discharging device. The stirring device consists of a stirring motor 7, a stirring shaft 8 and a stirring paddle 9, on one hand, under the action of the double stirring devices, the materials are fully mixed and fermented, and heavy impurities such as sand, crushed glass and the like cannot be precipitated under the action of the stirrer; light substances such as sawdust and plastic are crushed without generating scum, and on the other hand, a plug-flow reaction state is formed, the materials overflow to the discharge end face, and the retention time of the organic garbage (or the kitchen garbage) in the fermentation device is 20 to 25 days. And discharging the completely fermented organic garbage (or kitchen garbage) out of the fermentation device through a discharging device, wherein part of biogas residues are refluxed to the feeding end face to serve as strains for inoculating new materials. The arc structure of fermenting installation bottom can guarantee the homogeneity of agitating unit stirring, makes things convenient for the flow of material when fermentation reaction unit 1 business turn over material simultaneously. The fermentation temperature in the fermentation reaction device 1 can be effectively controlled by internal or external heating in combination with the first temperature sensor 11 and the second temperature sensor 12 on the fermentation reaction device 1. The biogas generated by the anaerobic reaction is collected by the biogas collecting port 15 for subsequent utilization. The first level indicator 13 and the second level indicator 14 on the fermentation reaction body 1 monitor the height of the material in the fermentation reaction body 1 in real time as the basis of the feeding and discharging operation. When the output of the biogas exceeds a normal value, or the feed and discharge amount exceeds a normal feed and discharge amount in a short time, the pressure in the fermentation reaction body 1 will be increased or decreased, and when the pressure change in the fermentation reaction body 1 reaches a preset threshold value, the biogas safety release port 10 is opened to release the pressure, so as to protect the safety of the fermentation reaction body 1.
The working principle of treating the livestock and poultry manure or sludge by using the fermentation reaction device comprises the following specific processes: the livestock and poultry manure (or dewatered sludge) can directly enter the inner cavity of the fermentation reaction body 1 through the feed inlet 16 by the feed conveying device without pretreatment. The feeding operation may be continuous or semi-continuous. Get into fermentation reaction body 1's material, at first get into upper cell body 2 inside, because the wall effect of inside partition wall 4, must pass through first overflow hole 5 and second overflow hole 6 round overflow hole partition wall 19, after the overflow, just can reach lower floor's cell body 3 inside, is taken reaction unit out by discharge gate 17 through discharging device. The stirring device consists of a stirring motor 7, a stirring shaft 8 and a stirring paddle 9, on one hand, under the action of the double stirring devices, the materials are fully mixed and fermented, and heavy impurities such as sand, crushed glass and the like cannot be precipitated under the action of the stirrer; on the other hand, a plug-flow reaction state is formed, the material overflows to the discharge end face, and the retention time of the livestock and poultry manure (or dewatered sludge) in the fermentation device is 15-20 days. The livestock and poultry manure (or dewatered sludge) which is completely fermented is discharged out of the fermentation device through the discharging device and enters the dewatering device, and part of biogas slurry generated after passing through the dewatering device flows back to the feeding end face to be used as a strain to inoculate a new material. The arc structure of fermenting installation bottom can guarantee the homogeneity of agitating unit stirring, makes things convenient for the flow of material when fermentation reaction body 1 business turn over material simultaneously. The fermentation temperature in the fermentation reaction body 1 can be effectively controlled by heating internally or externally and combining the first temperature sensor 11 and the second temperature sensor 12 on the fermentation reaction device 1. The biogas generated by the anaerobic reaction is collected by the biogas collecting port 15 for subsequent utilization. The first level indicator 13 and the second level indicator 14 on the fermentation reaction body 1 monitor the height of the material in the fermentation reaction body 1 in real time as the basis of the feeding and discharging operation. When the output of the biogas exceeds a normal value, or the feed and discharge amount exceeds a normal feed and discharge amount in a short time, the pressure in the fermentation reaction body 1 will be increased or decreased, and when the pressure change in the fermentation reaction body 1 reaches a preset threshold value, the biogas safety release port 10 is opened to release the pressure, so as to protect the safety of the fermentation reaction body 1.
The reaction device of the utility model adopts the design of the upper and the lower double-layer groove bodies, which reduces the occupied area of the fermentation reaction device by nearly 50 percent and the total heat dissipation area, and makes the fermentation reaction temperature easier to control; the materials in the upper tank body flow into the lower tank body through the overflow port by intermittent or continuous stirring of the two stirring devices, and are pumped out of the reaction device through the discharging device, so that the materials flow in the reaction device and are fully and uniformly mixed, thereby achieving the purpose of complete reaction; the solid content of the fermentation material in the reactor can reach 20-35% at most, and the concentration of anaerobic microorganisms is improved to a great extent, so that the gas production rate per unit volume is greatly improved; simple structure, simple maintenance and operation, no solid sediment, no waste gas release.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A double-layer anaerobic fermentation device is characterized by comprising a fermentation reaction body (1), wherein,
the fermentation reaction body (1) comprises an upper tank body (2) and a lower tank body (3);
a partition wall (4) is arranged between the upper layer tank body (2) and the lower layer tank body (3), wherein,
the width of the partition wall (4) is the same as that of the fermentation reaction body (1);
and a first overflow hole (5) and a second overflow hole (6) are formed on two sides of the partition wall (4).
2. The double-layer anaerobic fermentation device as claimed in claim 1, wherein the end of the upper layer tank body (2) is provided with a feed inlet (16);
and a discharge hole (17) is arranged at the end part of the lower layer tank body (3).
3. The double-layer anaerobic fermentation device according to claim 1 or 2, wherein the upper tank body (2) and the lower tank body (3) are both provided with stirring shafts (8), wherein,
a stirring paddle (9) is arranged on the stirring shaft (8);
and a stirring motor (7) is arranged at the end part of the stirring shaft (8).
4. The double-layer anaerobic fermentation device as claimed in claim 3, wherein the bottoms of the upper layer tank body (2) and the lower layer tank body (3) are both provided with bottom surface arc structures (18); the first overflow hole (5) and the second overflow hole (6) are separated from the cavity of the upper layer tank body (2) through overflow hole enclosing walls (19).
5. The double-layered anaerobic fermentation device according to claim 4, wherein the top of the fermentation reaction body (1) is provided with a safety release port (10); a first temperature sensor (11), a first level indicator (13) and a gas collecting port (15) are sequentially arranged at the top of the fermentation reaction body (1) and one side of the safe release port (10).
6. The double-layered anaerobic fermentation device as claimed in claim 5, wherein a second temperature sensor (12) and a second level gauge (14) are installed at both sides of the fermentation reaction body (1), respectively.
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| CN201922000139.7U CN211035927U (en) | 2019-11-19 | 2019-11-19 | Double-layer anaerobic fermentation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795906A (en) * | 2021-01-22 | 2021-05-14 | 无锡琨圣智能装备股份有限公司 | Double-layer O-ALD atomic layer deposition equipment |
| CN116590125A (en) * | 2023-05-19 | 2023-08-15 | 长春金马模具科技有限公司 | A high-efficiency horizontal bipolar anaerobic biogas tank |
-
2019
- 2019-11-19 CN CN201922000139.7U patent/CN211035927U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795906A (en) * | 2021-01-22 | 2021-05-14 | 无锡琨圣智能装备股份有限公司 | Double-layer O-ALD atomic layer deposition equipment |
| CN116590125A (en) * | 2023-05-19 | 2023-08-15 | 长春金马模具科技有限公司 | A high-efficiency horizontal bipolar anaerobic biogas tank |
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