CN210394350U

CN210394350U - Methane tank and methane circulating fermentation system

Info

Publication number: CN210394350U
Application number: CN201920967220.XU
Authority: CN
Inventors: 贺绵鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-24
Anticipated expiration: 2029-06-25

Abstract

The utility model belongs to the technical field of methane, in particular to a methane tank and a methane circulating fermentation system, which comprises a methane tank, a methane pipeline and a methane storage tank, wherein the methane tank and the methane storage tank are connected into a whole through the methane pipeline; the methane tank is more than or equal to 1, and when the methane tank is more than or equal to 2, the methane tanks are connected in parallel; the methane tank comprises a tank body, a feed inlet, a methane residue discharge port, a methane liquid discharge port, an air valve, a horizontal plane, a methane liquid tank and a methane residue tank, wherein the methane tank body is inclined and forms a certain angle with the horizontal plane, so that methane liquid can flow to one side with low height; the feed inlet and the air valve are arranged on the upper surface of the tank body in parallel, and the air valve is close to the end part of the tank body higher than the horizontal plane; the biogas residue discharge port and the biogas slurry discharge port are arranged on the lower side surface of the biogas digester, and the biogas slurry discharge port is positioned above the biogas residue discharge port; the biogas liquid pool and the biogas residue pool are arranged in parallel and are positioned at the corresponding lower positions of the biogas residue discharge port and the biogas liquid discharge port.

Description

Methane tank and methane circulating fermentation system

Technical Field

The utility model belongs to the technical field of marsh gas, especially, relate to a methane-generating pit and marsh gas circulation fermentation system.

Background

The methane is a combustible gas produced by organic substances through microbial fermentation under the conditions of certain temperature, humidity and pH value in an anaerobic environment. The wastes from the methane tank are biogas slurry and biogas residues which can be used as pesticide additives, fertilizers, feeds and the like, thereby greatly reducing the harm brought by chemical fertilizers and pesticides and being beneficial to producing green products and pollution-free products. The biogas slurry can be used as pesticide, fertilizer, feed and the like, and can also be used as resource to achieve the purpose of saving. With the development of biogas science and technology and the popularization of household biogas in rural areas, the household biogas digester is provided with a fixed arch cover hydraulic pressure type pool, a large uncovering hydraulic pressure type pool, a hanging pipe type hydraulic pressure type pool, a curved flow distribution hydraulic pressure type pool, a top return water hydraulic pressure type pool, a separation floating cover type pool, a semi-plastic type pool, an all-plastic type pool and a tank type pool according to local use requirements, conditions such as air temperature, geology and the like. Although the forms are various, the methane tank is generally formed by four basic types of hydraulic methane tanks, floating cover type methane tanks, semi-plastic methane tanks and tank type methane tanks.

The hydraulic methane tank is a tank type which is the earliest and most popularized in China, and is formed by comprehensively improving the tank types on the basis of summarizing 'three-combination', 'round, small, shallow', 'movable cover', 'straight pipe feeding', 'middle layer discharging' and other well-built tanks. The three-in-one mode is that the toilet, the pigsty and the methane tank are connected into a whole, and the human and animal excrement can be directly swept into the methane tank for fermentation. The round, small and shallow are the round, small and shallow depth of the pool body. The movable cover is the top of the methane tank and is provided with a movable cover plate. The pressure varies repeatedly and generally varies between 4 to 16 kPa (i.e., 40 to 160 cm Hg). This has adverse effects on the stability and improvement of the strength of the tank body and the combustion efficiency of the lamp and the stove. And as the diameter of the movable cover can not be increased, the large discharge work is difficult for the methane tank taking straws as main fermentation raw materials.

The bottom layer discharging hydraulic methane tank without movable cover is a modified hydraulic methane tank. The pool type cancels the movable cover of the hydraulic methane pool, seals the arch cover of the methane pool, only leaves the gas guide pipe, and increases the volume of the hydraulic pressure room, thus avoiding the problem caused by the untight sealing of the movable cover of the methane pool, and advocating the new methane pool matched with the mode to adopt the pool type in rural areas in northern China. At present, a glass fiber reinforced plastic septic tank is also available in the market, and the glass fiber reinforced plastic septic tank is of a two-stage sedimentation structure and is used for primary treatment of domestic sewage to reduce solid matters.

The structure has the defects of high manufacturing cost, high construction difficulty, generally lower than the ground level, difficult discharge of biogas residues and possible safety accidents. And the bottom layer biogas residue and the middle and upper layer biogas slurry can not be separated and are difficult to recycle.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a biogas digester and biogas circulating fermentation system, the construction cost is low, can be with natural pond liquid, natural pond sediment and marsh gas preliminary separation, do benefit to recycle.

The utility model provides a methane tank of solving above technical problem in the utility model, including the horizontal plane, its characterized in that: the methane tank comprises a tank body, a feed inlet, a methane residue discharge port, a methane liquid discharge port, an air valve, a methane liquid tank and a methane residue tank, wherein the tank body is obliquely arranged and forms a certain angle with the horizontal plane, so that methane liquid flows from one end of the tank body to the other end of the tank body; the feed inlet and the air valve are arranged on the upper surface of the tank body, the air valve is arranged at the end part of the tank body higher than the horizontal plane, and the feed inlet is positioned at one side of the air valve far away from the end part higher than the horizontal plane; the biogas residue discharge port and the biogas slurry discharge port are arranged on the side surface of the lower end of the tank body, and the biogas slurry discharge port is positioned above the biogas residue discharge port; the biogas liquid pool and the biogas residue pool are arranged in parallel and are respectively positioned at the corresponding lower positions of the biogas residue discharge port and the biogas liquid discharge port.

The cross section of the methane tank body is round or square.

The biogas slurry discharge port is positioned above the biogas residue discharge port and arranged in a staggered manner.

The biogas digester is also provided with a hollow blocking pipe which is respectively inserted into the biogas residue discharge port and the biogas slurry discharge port in a clinging manner. The two ends of the blocking pipe are not closed and are open.

The plugging pipe is fixedly connected with the biogas residue discharge port and the biogas slurry discharge port through fixing clamps, so that the connection stability of the plugging pipe is improved.

The fixing clip is a small cylinder or a square block. The corresponding positions of the blocking pipe, the biogas residue discharge port and the biogas slurry discharge port are respectively provided with a small hole, when the blocking pipe is inserted into the biogas residue discharge port and the biogas slurry discharge port, the small holes correspond to each other, and then the blocking pipe is inserted into the fixing clamp to be fixed.

The tank body is a tubular container. The tank body is a long tubular container and can be placed on the ground or underground. The tank body and the horizontal plane form a certain angle, so that the biogas slurry can flow to one side, and other equipment is not needed during discharging. The biogas pipeline is used for conveying or recycling biogas. The gas chamber, the biogas slurry and the biogas residues in the tank body are all in the same space, and no baffle plate is arranged in the middle. The biogas residues are arranged on the bottom surface of the tank body, the biogas slurry is higher than the biogas residue layer, and the whole space is filled with biogas in the gas chamber.

The angle between the pool body and the horizontal plane is 5-10 degrees.

The biogas liquid pool and the biogas residue pool can be arranged underground or on the ground. It is sufficient that the height is lower than the discharge port position.

The utility model relates to a biogas circulating fermentation system, which comprises N biogas tanks, a biogas pipeline and external equipment, wherein one end of the biogas pipeline is connected with a gas valve, and the other end of the biogas pipeline is connected with the external equipment to connect the biogas tanks and the external equipment into a whole; n is more than or equal to 2, and the methane tanks are connected in series through gas pipes to form a whole.

The external equipment is provided with a pressurization air pump and an air storage tank, the air storage tank is connected with the pressurization air pump, and the pressurization air pump is connected with an air valve of the methane tank. The external equipment of the utility model can also be a pressurization air pump, an air storage tank, a methane gas furnace or/and a methane generator, etc. The methane can be conveyed out by the pressure in the pool, and can also be conveyed by a booster pump. The booster air pump, the air storage tank, the methane gas furnace or/and the methane generator and the like are conventional equipment.

A plurality of methane tanks in the circulating fermentation system are connected by gas outlet valves, and each methane tank is connected in series and collected for use. Each fermentation tank is independent, the raw materials are not fully added at one time, but are added in sequence, and a cycle of feeding and discharging is formed by first-in first-out. The gas outlet valve is a tee joint which connects a plurality of methane tanks together to collect the methane. One end of the tee joint is connected with external equipment, and the other end or the multiple ends of the tee joint are connected with a gas valve or a gas outlet switch of the methane tank.

The air valve can be replaced by an air outlet switch and plays a role of switching.

The utility model discloses well cell body sets up two discharge gates of height, and natural pond liquid is put out earlier, is giving out natural pond sediment, makes the waste material reach simple solid-liquid separation, increases operation rate, reduces environmental pollution. Because the tank body has simple structure and unlimited size, a plurality of methane tanks can be used for feeding and discharging materials in sequence to form a methane circulating fermentation system.

The utility model discloses simple structure, construction cost are low, and easy the popularization can do benefit to recycle with natural pond liquid, natural pond sediment and marsh gas primary separation.

Drawings

FIG. 1 is a schematic view of the structure of a methane tank of the present invention

FIG. 2 is a schematic view of the structure of the depression surface of the middle methane tank of the present invention

FIG. 3 is a schematic view of the connection between the plugging pipe and the tank body of the methane tank of the present invention

FIG. 4 is a schematic view of the connection structure of the middle pool body and the external device

FIG. 5 is a schematic view of the structure of the circulating fermentation system of the present invention

Wherein the labels in the figure are:

1. the biogas residue sewage treatment device comprises a pool body, a feed inlet, a biogas residue discharge outlet, a biogas slurry discharge outlet, a biogas valve or gas outlet switch, a horizontal plane, a blocking pipe, a biogas residue pool, a pressurizing gas pump, a gas storage tank and a fixing clamp, wherein the feed inlet is 2, the biogas residue discharge outlet is 3, the biogas residue discharge outlet is 4, the gas valve or gas outlet switch is 5, the horizontal plane is 6, the blocking pipe is 7

Detailed Description

The present invention will be further described with reference to the following detailed description:

example 1

A biogas pool is provided with a pool body, a feed inlet, a biogas residue discharge port, a biogas slurry discharge port, an air valve, a biogas slurry pool and a biogas residue pool, wherein the pool body is obliquely arranged and forms a certain angle with the horizontal plane, so that biogas slurry flows from one end of the pool body to the other end of the pool body; the feed inlet and the air valve are arranged on the upper surface of the tank body, the air valve is arranged at the end part of the tank body higher than the horizontal plane, and the feed inlet is positioned at one side of the air valve far away from the end part higher than the horizontal plane; the biogas residue discharge port and the biogas slurry discharge port are arranged on the side surface of the lower end of the tank body, and the biogas slurry discharge ports are positioned above the biogas residue discharge ports and are arranged in a staggered manner; the biogas liquid pool and the biogas residue pool are arranged in parallel and are respectively positioned at the corresponding lower positions of the biogas residue discharge port and the biogas liquid discharge port.

The cross section of the methane tank body is circular.

The methane tank body is a tubular container. The methane tank body is a long tubular container, and can be placed on the ground or underground. The tank body and the horizontal plane form a certain angle, so that the biogas slurry can flow to one side, and other equipment is not needed during discharging. The biogas pipeline is used for conveying or recycling biogas. The gas chamber, the biogas slurry and the biogas residues in the tank body are all in the same space, and no baffle plate is arranged in the middle. The biogas residues are arranged on the bottom surface of the tank body, the biogas slurry is higher than the biogas residue layer, and the whole space is filled with biogas in the gas chamber.

The angle between the pool body and the horizontal plane is 5 or 10 degrees. The tank body is of an inclined structure, most of residues can be removed when each fermentation period is finished, and the upper-layer crusting phenomenon can be avoided.

The blocking pipes are respectively inserted into the biogas residue discharge port and the biogas slurry discharge port in a clinging manner. The methane tank body is a tubular container.

The biogas pool body is arranged at a certain angle with the horizontal plane, the discharge hole is positioned at the lower direction, the blocking pipes are arranged at the biogas residue discharge hole and the biogas slurry discharge hole, the blocking pipes are hollow, and the upper part of the blocking pipes is higher than the highest liquid level of the pool body so as to achieve the purpose of the dumbber. Then adding raw materials from the feed inlet, and when the raw materials are higher than the bottom of the feed inlet, forming a closed environment inside the tank body and starting anaerobic fermentation. As the tank body inclines to one side, an air chamber is formed at the top of the other side. The methane generated by the fermentation and decomposition of the microorganisms rises to the gas chamber. The gas chamber is provided with a gas valve for connecting the methane to external equipment for storage or use. The air valve or the air outlet switch is a conventional instrument or a small device and can be purchased in the market.

Example 2

A biogas circulating fermentation system comprises N biogas pools, a biogas pipeline and external equipment, wherein one end of the biogas pipeline is connected with an air valve, and the other end of the biogas pipeline is connected with the external equipment to connect the biogas pools and the external equipment into a whole; n is more than or equal to 2, and the methane tanks are connected in series through gas pipes to form a whole. The external equipment is provided with a pressurization air pump and an air storage tank, the air storage tank is connected with the pressurization air pump, and the pressurization air pump is connected with an air valve of the methane tank.

The methane tank comprises a tank body, a feed inlet, a methane residue discharge port, a methane liquid discharge port, an air valve, a methane liquid tank and a methane residue tank, wherein the tank body is obliquely arranged and forms a certain angle with the horizontal plane, so that methane liquid flows from one end of the tank body to the other end of the tank body; the feed inlet and the air valve are arranged on the upper surface of the tank body, the air valve is arranged at the end part of the tank body higher than the horizontal plane, and the feed inlet is positioned at one side of the air valve far away from the end part higher than the horizontal plane; the biogas residue discharge port and the biogas slurry discharge port are arranged on the side surface of the lower end of the tank body, and the biogas slurry discharge port is positioned above the biogas residue discharge port; the biogas liquid pool and the biogas residue pool are arranged in parallel and are respectively positioned at the corresponding lower positions of the biogas residue discharge port and the biogas liquid discharge port.

The cross section of the methane tank body is square. The air valve can be replaced by an air outlet switch to play a role of switching.

The biogas digester is also provided with a hollow blocking pipe which is respectively inserted into the biogas residue discharge port and the biogas slurry discharge port in a clinging manner. The two ends of the blocking pipe are not closed and are open. The plugging pipe is fixedly connected with the biogas residue discharge port and the biogas slurry discharge port through fixing clamps, so that the connection stability of the plugging pipe is improved. The fixing clip is a small cylinder or a square block. The corresponding positions of the blocking pipe, the biogas residue discharge port and the biogas slurry discharge port are respectively provided with a small hole, when the blocking pipe is inserted into the biogas residue discharge port and the biogas slurry discharge port, the small holes correspond to each other, and then the blocking pipe is inserted into the fixing clamp to be fixed.

The methane tank body is a tubular container, and the angle between the tank body and the horizontal plane is 8⁰。

A plurality of methane tank bodies in the methane circulating fermentation system are connected with an air valve or an air outlet switch through an air outlet valve, so that methane is collected and used uniformly. The gas outlet valve can be a tee joint which connects a plurality of methane tanks together to collect the methane. One end of the tee joint is connected with external equipment, and the other end or the multiple ends of the tee joint are connected with a gas valve or a gas outlet switch of the methane tank. Each fermentation tank is independent, the raw materials are not fully added at one time, but are added in sequence, and a cycle of feeding and discharging is formed by first-in first-out. For example, one tank can be filled in ten days, and 5 methane tanks are arranged when fermentation needs 50 days. The tee is conventional tee equipment.

The utility model discloses in the methane-generating pit use organic matter raw materials fermentation such as straw, animal waste, kitchen garbage to produce the energy and breed the processing of excrement and sewage and return to the field. The fermentation time required by different raw materials is different, and the fermentation is finished when no gas is produced in the tank. The methane tank body can prevent corrosion, has low manufacturing cost, and is made of materials such as HDPE, glass fiber reinforced plastic, cement cast-in-place and the like. When the fermentation is finished, opening a biogas slurry discharge port, discharging biogas slurry, and discharging the biogas slurry to a biogas slurry pool. Then opening a biogas residue discharge port, and discharging the biogas residue to a biogas residue pool.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and the above embodiments and description have been described only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention, which will also have various changes and modifications, all of which will fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A methane tank comprises a horizontal plane, and is characterized in that: the methane tank comprises a tank body, a feed inlet, a methane residue discharge port, a methane liquid discharge port, an air valve, a methane liquid tank and a methane residue tank, wherein the tank body is obliquely arranged and forms a certain angle with the horizontal plane, so that methane liquid flows from one end of the tank body to the other end of the tank body; the feed inlet and the air valve are arranged on the upper surface of the tank body, the air valve is arranged at the end part of the tank body higher than the horizontal plane, and the feed inlet is positioned at one side of the air valve far away from the end part higher than the horizontal plane; the biogas residue discharge port and the biogas slurry discharge port are arranged on the side surface of the lower end of the tank body, and the biogas slurry discharge port is positioned above the biogas residue discharge port; the biogas liquid pool and the biogas residue pool are arranged in parallel and are respectively positioned at the corresponding lower positions of the biogas residue discharge port and the biogas liquid discharge port.

2. The biogas digester as claimed in claim 1, wherein: the cross section of the tank body is round or square.

3. The biogas digester as claimed in claim 1, wherein: the biogas slurry discharge port is positioned above the biogas residue discharge port and is arranged in a staggered manner.

4. The biogas digester as claimed in claim 1, wherein: the biogas digester is also provided with a blocking pipe which is hollow and is respectively inserted into the biogas residue discharge port and the biogas slurry discharge port in a clinging manner; the two ends of the blocking pipe are not closed and are open.

5. The biogas digester as claimed in claim 4, wherein: the plugging pipe is fixedly connected with the biogas residue discharge port and the biogas slurry discharge port through fixing clamps, so that the connection stability of the plugging pipe is improved.

6. The biogas digester as claimed in claim 1, wherein: the tank body is a tubular container.

7. The biogas digester as claimed in claim 1, wherein: the angle between the pool body and the horizontal plane is 5-10 degrees.

8. A biogas circulating fermentation system using the biogas digester as claimed in claim 1, wherein: the biogas digester comprises N biogas digesters, a biogas pipeline and external equipment, wherein one end of the biogas pipeline is connected with a gas valve, and one end of the biogas pipeline is connected with the external equipment to connect the biogas digesters and the external equipment into a whole; n is more than or equal to 2, and the methane tanks are connected in series through gas pipes to form a whole.

9. The biogas circulating fermentation system applying the biogas digester according to claim 1, wherein the biogas circulating fermentation system comprises: the external equipment is provided with a pressurization air pump and an air storage tank, the air storage tank is connected with the pressurization air pump, and the pressurization air pump is connected with an air valve of the methane tank.

10. The biogas digester as claimed in claim 1, wherein: the air valve is replaced by an air outlet switch and plays a role of switching.