WO2023138326A1

WO2023138326A1 - Biogas slurry, biogas residue and biogas production tank for grass planting in alpine pasturing area

Info

Publication number: WO2023138326A1
Application number: PCT/CN2022/142658
Authority: WO
Inventors: 李洪泉; 黄闽; 程明军; 杨春桃; 李博; 伍文丹; 唐玮琦; 姚明久; 廖晓蓉; 杨廷勇; 严林; 荣璟; 何佩佩
Original assignee: 四川省草业技术研究推广中心
Priority date: 2022-01-20
Filing date: 2022-12-28
Publication date: 2023-07-27
Also published as: CN114275989A

Abstract

Disclosed in the present invention is a biogas slurry, biogas residue and biogas production tank for grass planting in an alpine pasturing area. The tank comprises a biogas digester body, outer-layer glass fiber reinforced plastic, a heat insulation film, a heat insulation medium and a carbon fiber heating cable. The heat insulation film is arranged outside the biogas digester body, the heat insulation medium is arranged outside the heat insulation film, the outside of the heat insulation medium is covered by the outer-layer glass fiber reinforced plastic, and an inner side of the heat insulation film is connected to the carbon fiber heating cable by means of bonding. By means of the biogas slurry, biogas residue and biogas production tank for grass planting in an alpine pasturing area, a heating structure and a heat insulation medium are added, such that a biogas digester body is heated and heat is prevented from being externally transferred, the problems in a traditional biogas digester of a fermentation temperature not reaching the standard, the fermentation of biogas slurry and biogas residues being poor, the quality of a fertilizer being poor and the biogas production efficiency being low when the traditional biogas digester is used in an alpine pasturing area are solved, and in this way, the fermentation temperature inside the biogas digester is increased, such that the fermentation temperature inside the biogas digester is at an appropriate temperature level, the fermentation effect is good, and the practicability is high.

Description

A biogas slurry and biogas production tank for planting grass in alpine pastoral areas

technical field

The invention relates to the technical field of biogas digesters, in particular to a biogas slurry and residue and a biogas production tank for planting grass in alpine pastoral areas.

Background technique

A biogas digester is a facility for producing biogas and biogas residue. Biogas is a combustible gas produced by microbial fermentation of organic matter in an anaerobic environment under certain temperature, humidity, and pH conditions. Since this gas was first found in swamps, lakes, and ponds, it is called biogas.

The biogas digesters currently on the market have the following problems in use:

1. Traditional biogas digesters have relatively simple functions in the application process, and often can only be fermented in a natural environment. When used in an alpine pastoral environment, due to the alpine natural conditions, the temperature is often not up to standard when fermenting in a natural environment, resulting in long fermentation time, low gas production efficiency, poor fermentation of biogas slurry and residue, and poor fertilizer quality. There are certain limitations in application;

2. The heat insulation effect of most biogas digesters is not strong when used, especially when used in the alpine pastoral environment, it is easy to cause heat transfer, which will lead to low fermentation temperature of internal biogas and biogas slurry, low gas production efficiency, poor fermentation of biogas slurry and residue, and poor fertilizer quality;

3. Most biogas digesters in alpine pastoral areas use yak dung as the main raw material, and cow dung is prone to encrustation during the fermentation process of the biogas digester. Once a large amount of crusting occurs in the cow dung, it will affect the overall biogas output. At this time, the user needs to manually break the encrusted cow dung inside the biogas tank, which cannot improve the biogas production efficiency.

4. Traditional biogas digesters use sealing structures such as plates and cover plates to achieve the sealing effect of the inlet and outlet. As the biogas digester is used for a long time, the rotating shaft of the sealing structure is prone to rust or damage. As a result, the biogas digester cannot be used normally, which is very unfavorable for users to maintain the sealing structure, and the operation is more troublesome.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a biogas slurry and biogas production tank for grass planting in alpine pastoral areas, which solves the problem that the existing biogas digesters have relatively single functionality in the application process and can only be fermented in a natural environment. When used in an alpine pastoral environment, the temperature is often not up to standard when fermented in a natural environment due to the alpine natural conditions, resulting in longer fermentation time, low gas production efficiency, poor fermentation of biogas slurry and biogas residue, and poor fertilizer quality. At the same time, most biogas digesters do not have strong heat insulation effect when used, especially in the alpine pastoral environment, it is easy to cause the external low temperature to be transmitted to the interior of the biogas digester, so that the thermal insulation effect during use is poor, and the fermentation temperature inside the biogas digester is reduced, which will affect the internal biogas slurry fermentation and gas production efficiency. Shell phenomenon, once the cow dung has a large amount of crusting, it will affect the overall biogas output. At this time, the user needs to manually break the crusted cow dung inside the biogas tank, which cannot improve the biogas production efficiency. The biogas digester cannot be used normally, which is very unfavorable for the user to maintain the sealing structure, and it is a troublesome problem during operation.

(2) Technical solutions

To achieve the above object, the present invention is achieved through the following technical solutions:

A biogas slurry and residue and biogas production tank for planting grass in alpine pastoral areas, including a biogas tank body, an outer layer of glass fiber reinforced plastic, a heat insulating film, a heat insulating medium and a carbon fiber heating cable. , the interior of the biogas digester body is provided with glass fiber reinforced plastic sheets.

Preferably, one end of the top of the outer layer of FRP is set as an end, the other end of the top of the outer layer of FRP is set as a tail, the top of the end is provided with a manure inlet, the top of the tail is provided with a manure outlet, the top of the outer layer of FRP is provided with a toilet manure inlet, and the tops of the manure inlet, manure outlet and toilet manure inlet are respectively provided with a movable cover assembly.

Preferably, the top of the outer layer of FRP is provided with jacks, the movable cover assembly includes a cover plate, a sealing plug, a rotating shaft, a fixed plate and an insertion rod, the bottom of the fixed plate is fixedly connected to the insertion rod, the side of the fixed plate is connected to the cover plate through a rotating shaft, and the bottom of the cover plate is provided with a sealing plug.

Preferably, the interior of the biogas digester body is fixedly connected with a baffle, and the baffle is located below the manure inlet of the toilet.

Preferably, the interior of the biogas digester body is fixedly connected to a column, and the exterior of the column is sleeved with a glass fiber reinforced plastic sheet, and the number of the glass fiber reinforced plastic sheets is set to two.

Preferably, a handle is provided on the top of the cover, and there are three movable cover components.

Preferably, there are four carbon fiber heating cables.

Preferably, the angle between the column and the digester body is set to forty-five degrees, and the column is located on the right side of the baffle.

(3) Beneficial effects

The invention provides a biogas slurry and biogas production tank for grass planting in alpine pastoral areas, which has the following beneficial effects:

(1) The biogas slurry and residue and biogas production tanks used for planting grass in the alpine pastoral area, by adding a heating structure, solved the problem that the temperature of the traditional biogas digester was not up to standard when used in the alpine pastoral area. Four carbon fiber heating cables were installed outside the biogas digester, and a temperature monitoring and control device was installed outside the glass fiber reinforced plastic body of the biogas digester. In this way, when the temperature monitoring and control device detects that the temperature of the biogas digester body has dropped, it will be connected to the carbon fiber heating cable to run and generate heat, thereby heating the biogas digester body, thereby increasing the internal temperature of the biogas digester. Temperature environment, when the temperature is too high, the heating is stopped, so that the fermentation environment inside the biogas tank is at a suitable temperature level, and the temperature conditions required for biogas fermentation are well maintained. The overall structure is simple and practical;

(2) The biogas slurry and biogas production tank used for planting grass in the alpine pastoral area is covered with a layer of heat-insulating film on the outside of the biogas tank body, and the outside of the heat-insulating film is insulated with a heat-insulating medium such as ceramsite. Finally, it is covered with a layer of glass fiber reinforced plastic with a thickness of 1 cm to ensure that the shell does not see water and gas to achieve the purpose of heat insulation. This can reduce heat conduction to the outside, and can also avoid external low temperature conduction to the interior of the biogas tank, and the heat insulation effect is very good when in use;

(3) For the biogas slurry and biogas production tanks used for planting grass in the alpine pastoral area, a glass fiber reinforced plastic sheet is installed inside the biogas tank body, and the glass fiber reinforced plastic sheet is sleeved on the outside of the column, and the angle of inclination between the column and the top of the biogas tank body is 45 degrees. In this way, when the cow dung inside the biogas tank body crusts, the dung shell can be cut through the principle of biogas liquid sedimentation. , can form a double-layer structure, which greatly improves the shell breaking efficiency and gas production efficiency in the application process, and has strong functionality;

(4) The biogas slurry and residue and biogas production tanks used for planting grass in the alpine pastoral area are equipped with a movable cover assembly on the top of the biogas tank body, and the movable cover assembly and the biogas tank body are connected by inserting rods. Its detachable structure is very convenient for loading and unloading. In this way, as the use of the biogas tank continues to grow, when there is rust on the rotating shaft or the cover plate is damaged, only the movable cover assembly needs to be replaced, and the maintenance of the sealing structure of the biogas tank can be completed. Convenient and less difficult to operate.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the structural representation of glass fiber reinforced plastic sheet of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the biogas digester body of the present invention;

Fig. 4 is the overall plan view of the present invention;

Fig. 5 is a schematic diagram of the structure of the cover plate of the present invention.

In the figure, biogas digester body-1, end-2, tail-3, heat insulation film-4, carbon fiber heating cable-5, temperature monitoring and control device-6, outer glass fiber reinforced plastic-7, manure inlet-8, manure outlet-9, toilet manure inlet-10, jack-11, movable cover plate assembly-12, cover plate-13, sealing plug-14, rotating shaft-15, fixed plate-16, insert rod-17, column-18, glass steel sheet-1 9. Baffle plate-20, heat insulation medium-21.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-Fig. 5, the embodiment of the present invention provides a kind of technical scheme: a kind of biogas slurry biogas residue and biogas production tank that grasses are planted in alpine pastoral area, comprise biogas tank body 1, outer layer glass fiber reinforced plastics 7, heat insulation film 4, heat insulation medium 21 and carbon fiber heating cable 5, described biogas tank body 1 is provided with heat insulation film 4 outside, and the outside of described heat insulation film 4 is provided with heat insulation medium 21, and the outside of described heat insulation medium 21 is covered with outer glass fiber reinforced plastics 7, because heat insulation film 4 and heat insulation medium 21 are provided, The inner side of the thermal insulation film 4 is connected to the carbon fiber heating cable 5 by bonding, and the temperature monitoring and control device 6 is connected to the carbon fiber heating cable 5 through a line to mainly monitor the temperature of the biogas digester body 1. When the temperature is too low, the heating device is started. When the temperature is too high, the heating is stopped, so that the biogas digester can be used normally even in alpine pastoral areas, providing a suitable fermentation temperature and strong practicability.

One end at the top of the outer layer of FRP 7 is set as end 2, and the other end of the top of the outer layer of FRP 7 is set as tail 3. The top of the end 2 is provided with a manure inlet 8, and the top of the tail 3 is provided with a manure outlet 9. The top of the outer layer of FRP 7 is provided with a toilet manure inlet 10. The tops of the manure inlet 8, the manure outlet 9 and the toilet manure inlet 10 are respectively provided with a movable cover assembly 12. The interior of the biogas tank is also convenient for extracting the biogas slurry inside the biogas tank. The integrated design of the manure inlet 8 on the top plate, the toilet and the manure outlet 9 reduces the land occupation of the toilet, is convenient to use, and is convenient for cleaning and maintaining rural environmental sanitation.

The top of described outer layer FRP 7 offers jack 11, and described movable cover plate assembly 12 comprises cover plate 13, sealing plug 14, rotating shaft 15, fixed plate 16 and plunger 17, the bottom of described fixed plate 16 is fixedly connected plunger 17, the side of described fixed plate 16 is connected cover plate 13 by rotating shaft 15, and the bottom of described cover plate 13 is provided with sealing plug 14, owing to be provided with detachable cover plate 13 structure, it can be replaced when cover plate 13 occurs damage, is very easy during maintenance convenience.

The inside of the biogas digester body 1 is fixedly connected with a baffle 20, which is located below the manure inlet 10 of the toilet. Due to the baffle 20 provided, it can prevent feces from falling into the biogas tank when people go to the toilet, and it has strong functionality.

The interior of the biogas digester body 1 is fixedly connected to a column 18, and the exterior of the column 18 is socketed with a glass fiber reinforced plastic sheet 19. The number of the glass fiber reinforced plastic sheets 19 is provided with two, and the cow dung that has encrusted phenomenon can be scratched through the provided glass fiber reinforced plastic sheet 19, which better improves the gas production rate.

The top of the cover plate 13 is provided with a handle, and the number of the movable cover plate assembly 12 is provided with three, and the provided handle is convenient for the user to operate when opening and closing.

The number of the carbon fiber heating cables 5 is four, because the four longer carbon fiber heating cables 5 can complete the effect of heating the biogas digester in a short time, which is very convenient in application.

The angle between the column 18 and the biogas tank body 1 is set at 45 degrees, and the column 18 is located on the right side of the baffle plate 20. Since the column 18 is set at an angle of 45 degrees, it can be well combined with the principle of biogas slurry settling up and down to scratch the cow dung shell, which is more practical.

Working principle: When using the biogas slurry and residue and biogas production tanks for planting grass in the alpine pastoral area, you only need to bury the biogas tank inside the land to start using it. In the application process of the biogas tank, firstly, because the manure inlet 8 is opened at the end 2, the cow dung enters the interior of the biogas tank body 1 from the manure inlet 8, and then the manure outlet 9 is opened at the tail 3, and the user extracts the biogas slurry inside the biogas tank body 1. The toilet feces inlet 10 opened at one end is used when people go to the toilet. When people go to the toilet, because there is an additional baffle 20 inside the biogas tank body 1, it can avoid the dung directly falling into the dung water and splashing. Then, when the user needs to plan the cow dung into the biogas tank, hold the handle on the top of the cover plate 13, and then pull it hard to turn it over. In this way, the manure inlet 8 can be used for cow dung to enter the interior of the biogas tank body 1. Similarly, the manure outlet 9 and toilet manure inlet The mouth 10 is also operated in the same way, and in the process of using the biogas digester, once the structure of the rotating shaft 15 of the cover plate 13 is corroded or damaged, since the movable cover plate assembly 12 and the biogas digester body 1 are connected by the insertion rod 17, its detachable structure is very convenient for loading and unloading it. Just install the new movable cover assembly 12, which is very convenient during loading and unloading, and the difficulty of operation is relatively low. Then, during the application of the biogas digester, due to the long-term low temperature environment in the alpine pastoral area, four carbon fiber heating cables 5 are installed outside the biogas digester to achieve the effect of self-heating. A temperature monitoring and control device 6 is installed outside the biogas digester body 1, so that when the temperature monitoring and control device 6 detects that the temperature on the surface of the biogas digester body 1 has dropped, it will be connected to the carbon fiber heating cable 5 to run and generate heat; If the temperature is too high, the heating is stopped, so that the fermentation environment inside the biogas digester is at a suitable temperature level, and the temperature conditions required for biogas fermentation are better maintained, and a layer of heat insulation film 4 is covered on the outside of the biogas digester body 1. At the same time, ceramsite is used outside the heat insulation film 4 to achieve the purpose of heat insulation. Then, because the outermost layer of the biogas digester is covered with an outer layer of glass fiber reinforced plastic 7 with a thickness of 1 cm, it can ensure that the shell does not see water and gas. The interior of the biogas digester has a very good thermal insulation effect during use. Finally, when the cow dung content in the biogas digester is large and crusting occurs, the glass fiber reinforced plastic sheet 19 installed inside the biogas digester body 1 can be used to achieve the crushing effect. Since the glass fiber reinforced plastic sheet 19 is sleeved on the outside of the column 18, and the inclination angle between the column 18 and the top of the biogas digester body 1 is 45 degrees, the principle of vertical sedimentation of the biogas slurry can be used to scratch the dung shell. A double-layer structure can be formed, which greatly improves the efficiency of gas production during the application process. The overall structure is simple and practical.

The biogas digester body 1, end portion 2, tail portion 3, heat insulation film 4, carbon fiber heating cable 5, temperature monitoring and control device 6, outer glass fiber reinforced plastics 7, manure inlet 8, manure outlet 9, toilet manure inlet 10, jack 11, movable cover plate assembly 12, cover plate 13, sealing plug 14, rotating shaft 15, fixed plate 16, inserting rod 17, column 18, glass fiber reinforced plastic sheet 19, baffle plate 20, heat insulation medium 21 of the present invention are all general standard parts or this The structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or through conventional experimental methods. The problem solved by the present invention is that the functionality of the existing biogas digesters in the application process is relatively single, and they can only be fermented in a natural environment. When used in an alpine pastoral environment, due to the alpine natural conditions, the temperature is often not up to standard when fermenting in a natural environment. In the case of poor material quality, there are certain limitations in application. At the same time, most biogas digesters do not have a strong heat insulation effect during use. Especially when used in an alpine pastoral environment, it is easy to cause the external low-temperature air to be transmitted to the interior of the biogas digester, which will affect the internal biogas liquid fermentation efficiency and reduce the temperature of the fermentation liquid inside the biogas digester. Crusts are prone to occur. Once a large amount of crusting occurs in the cow dung, it will affect the overall biogas output. At this time, the user needs to manually break the crusted cow dung inside the biogas tank, which cannot improve the biogas production efficiency. In the case of damage, the biogas digester cannot be used normally, which is very unfavorable for the user to maintain the sealing structure, and the operation is relatively troublesome. The present invention combines the above-mentioned components and adds a heating structure. Four carbon fiber heating cables 5 are installed outside the biogas digester, and a temperature monitoring and control device 6 is installed outside the biogas digester body 1. Heating is used to increase the temperature environment inside the biogas digester. When the temperature is too high, the heating is stopped, so that the fermentation environment inside the biogas digester is at a suitable temperature level, which better maintains the temperature conditions required for biogas fermentation. At the same time, because the exterior of the biogas digester body 1 is covered with a layer of heat-insulating film 4 structure, and then the heat-insulating medium 21 is used outside the heat-insulating film 4 to achieve heat insulation. External conduction, and can also avoid external low temperature conduction to the interior of the biogas digester. The thermal insulation effect during use is very good, and the glass fiber reinforced plastic sheet 19 is installed inside the biogas digester body 1, and the glass fiber reinforced plastic sheet 19 is sleeved on the outside of the column 18, and the inclination angle between the column 18 and the top of the biogas digester body 1 is 45 degrees. The water level breaking device with different liquid levels plays a role, and double-glass fiber reinforced plastic sheets 19 are installed to form a double-layer structure. During the application process, the efficiency of gas production is greatly improved, and the functionality is strong. Finally, the movable cover assembly 12 is installed on the top of the biogas digester body 1, and the movable cover assembly 12 and the biogas digester body 1 are connected by the insertion rod 17. Its detachable structure is very convenient for loading and unloading. In this way, as the use time of the biogas digester continues to increase, corrosion occurs at the rotating shaft 15 or the cover 1 appears. 3 When damaged, only the movable cover plate assembly 12 needs to be replaced, so that the maintenance of the sealed structure of the biogas digester can be completed, which is very convenient during loading and unloading, and at the same time, its operation difficulty is relatively low. The integrated design of the roof manure inlet 8, toilet, and manure outlet 9 reduces the land occupation of the toilet, is convenient to use, and is convenient for cleaning and maintaining rural environmental sanitation.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be realized in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, all the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so all changes within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this description is described according to implementation modes, not each implementation mode only includes an independent technical solution. This description in the description is only for the sake of clarity. Those skilled in the art should take the description as a whole, and the technical solutions in the various embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

A biogas slurry and residue and biogas production tank for planting grass in alpine pastoral areas, characterized in that it includes a biogas tank body (1), an outer layer of glass fiber reinforced plastic (7), a heat insulating film (4), a heat insulating medium (21) and a carbon fiber heating cable (5); The inner side of the film (4) is connected to the carbon fiber heating cable (5) by bonding, the outer wall of the biogas tank body (1) is provided with a temperature monitoring and control device (6), and the temperature monitoring and control device (6) is connected to the carbon fiber heating cable (5) through a line, and the interior of the biogas tank body (1) is provided with a glass fiber reinforced plastic sheet (19).
A biogas slurry and biogas production tank for planting grass in alpine pastoral areas according to claim 1, characterized in that: one end of the top of the outer layer of glass fiber reinforced plastic (7) is set as an end (2), the other end of the top of the outer layer of glass fiber reinforced plastic (7) is set as a tail (3), the top of the end (2) is provided with a manure inlet (8), the top of the tail (3) is provided with a manure outlet (9), and the top of the outer layer of glass fiber reinforced plastic (7) is provided with a toilet manure inlet (10). The tops of the mouth (8), the manure outlet (9) and the toilet manure inlet (10) are respectively provided with a movable cover assembly (12).
A biogas slurry and biogas production tank for planting grass in alpine pastoral areas according to claim 2, characterized in that: the top of the outer glass fiber reinforced plastic (7) is provided with a socket (11), the movable cover assembly (12) includes a cover plate (13), a sealing plug (14), a rotating shaft (15), a fixed plate (16) and an insertion rod (17), the bottom of the fixed plate (16) is fixedly connected to the insertion rod (17), and the side of the fixed plate (16) passes through the rotating shaft (15) Connect the cover plate (13), the bottom of the cover plate (13) is provided with a sealing plug (14).
The biogas slurry and residue and biogas production tank for planting grass in alpine pastoral areas according to claim 2, characterized in that: the interior of the biogas digester body (1) is fixedly connected to a baffle (20), and the baffle (20) is located below the manure inlet (10) of the toilet.
The biogas slurry and residue and biogas production tank for planting grass in alpine pastoral areas according to claim 1, characterized in that: the interior of the biogas digester body (1) is fixedly connected to a column (18), and the exterior of the column (18) is sleeved with a glass fiber reinforced plastic sheet (19), and the number of the glass fiber reinforced plastic sheets (19) is provided with two.
The biogas slurry and residue and biogas production tank for grass planting in alpine pastoral areas according to claim 3, characterized in that: a handle is provided on the top of the cover (13), and there are three movable cover assemblies (12).
The biogas slurry and residue and biogas production tank for grass planting in alpine pastoral areas according to claim 1, characterized in that: the number of the carbon fiber heating cables (5) is set to four.
A biogas slurry and biogas production tank for planting grass in alpine pastoral areas according to claim 5, characterized in that: the angle between the column (18) and the biogas digester body (1) is set to forty-five degrees, and the column (18) is located on the right side of the baffle (20).