WO2012139256A1

WO2012139256A1 - Glass fiber reinforced plastic biogas tank

Info

Publication number: WO2012139256A1
Application number: PCT/CN2011/000857
Authority: WO
Inventors: 戴学华; 何长兴
Original assignee: Dai Xuehua
Priority date: 2011-04-14
Filing date: 2011-05-16
Publication date: 2012-10-18
Also published as: CN201981191U

Abstract

A glass fiber reinforced plastic biogas tank includes a biogas storage chamber (1), a fermentation chamber (2), a feeding pipe (3) and a biogas discharging pipe (4) both of which are connected with the biogas storage chamber (1), and a stirrer (5). An annular hole (6) is set on the outer wall of the biogas storage chamber (1), the stirring shaft (7) of the stirrer (5) is extended into the fermentation chamber (2) through the annular hole (6), stirring blades (8) are set on the section of the stirring shaft (7) which locates in the fermentation chamber (2), a block cover (9) is installed on the section of the stirring shaft (7) out of the fermentation chamber (2), and the diameter of the block cover (9) is not less than the inner diameter of the annular hole (6). A discharging pipe (10) is provided in the fermentation chamber (2), a discharging cover (11) is installed in the exit of the discharging pipe (10), and at least one one-way biogas guide pipe (12) is installed on the discharging cover (11). The one-way biogas guide pipe (12) penetrates through the discharging pipe (10), and is in communication with the biogas storage chamber (1). The biogas tank has high biogas yield, well sealing effect, and can not volatilize easily.

Description

Description Book Glass Steel Biogas Digesters Technical Field

[0001] The utility model relates to a biogas generating device, in particular to a glass fiber reinforced plastic gas pool with easy control of fermentation gas and stable gas pressure of biogas.

Background technique

[0002] Biogas is a kind of combustible gas produced by microbial fermentation under the condition of temperature, humidity and pH in an anaerobic environment. Biogas is composed of a mixture of gases, the main component of which is methane. Biogas fermentation, which is often referred to as biogas fermentation, refers to the process by which biogas bacteria decompose organic matter and produce biogas. According to the action of various bacteria in the biogas fermentation process, biogas bacteria can be divided into two categories. The first type of bacteria is called decomposing bacteria, and its function is to break down complex organic matter into simple organic matter and carbon dioxide. Among them, there are cellulose decomposing bacteria, which are called decomposing bacteria; those that decompose proteins are called proteolytic bacteria; those that specifically break down fat are called decomposing bacteria; the second type of bacteria are called cariform bacteria, usually called hyperthyroidism. Bacteria, its role is to oxidize or reduce simple organic matter and carbon dioxide to methane. Because of this, the process of turning organic matter into biogas is like two processes of producing a product in the factory: First, the decomposition of bacteria processes complex organic matter such as feces, straw, weeds into semi-finished products, that is, compounds with simple structure; It is the processing of a simple compound into a product under the action of a hyperthyroid bacterium, that is, the production of formazan.

[0003] With the development of biogas science and technology in China and the promotion of rural household biogas, according to local use requirements and temperature, geological conditions, the household biogas tank has a fixed arch cover hydraulic pressure pool, a large uncovering water pressure pool, Suspension tube type hydraulic pressure tank, meandering cloth water pressure type tank, top return water pressure type pool, separated floating cover type tank, semi-plastic type pool, full plastic type tank and tank type tank. Although the forms are various, they are generally formed by four basic types of water-type biogas digesters, floating-face biogas digesters, semi-plastic biogas digesters and tank biogas digesters. .

[0004] Among them, the water pressure type biogas digesters have many advantages, mainly in the following four aspects: 1. The structure of the pool body is good in mechanical performance, and the utilization capacity of the soil is fully utilized, so labor saving and material saving are relatively low. Second, it is suitable for loading a variety of fermented raw materials, especially a large number of crop straws, which is very beneficial to rural fertilizer. Third, in order to facilitate frequent feeding, toilets and pig pens can be built on the biogas tank, and the manure can be cleaned into the pool at any time. 4. The biogas pool is in contact with the soil, which has a certain effect on the insulation of the pool. Although the hydraulic biogas digester has the above advantages, it also has many disadvantages: First, due to repeated changes in air pressure, and generally varies between 4 and 16 kPa (g 卩 40 to 160 cm Hg) pressure, this pair The strength of the pool body and the stability and improvement of the combustion efficiency of the lamps and cookers have an adverse effect. Secondly, since there is no stirring device, the scum in the pool is easy to crust and difficult to be broken, so the utilization rate of the fermentation raw materials is not high, and the gas production rate of the tank, that is, the volume of gas produced per cubic meter of the pool is low. Third, because the diameter of the movable cover cannot be increased, for the biogas digester where the fermentation raw material is mainly straw, the large discharge Work is difficult.

The Chinese patent document published as CN 201296755, published on 2009.08.26 discloses a spherical hydraulic glass fiber reinforced plastic gas digester comprising an upper hemisphere and a lower hemisphere, and is provided with a feed pipe and an air guiding pipe; The gas is inserted obliquely from the upper hemisphere into the fermentation chamber of the lower hemisphere; the gas guiding tube is disposed at the top of the upper hemisphere and communicates with the gas storage; the discharge port on the side wall of the upper hemisphere is provided with a concave The curved baffle; the discharge port directly communicates with the side wall between the water pressure, and the center of gravity between the water pressure is supported on the outer wall of the upper hemisphere. The patent document is provided with a concave curved baffle at the discharge opening on the side wall of the upper hemisphere, and the discharge port directly communicates with the sidewall of the water pressure. When the amount of biogas generated in the fermentation chamber is large, the biogas is full of storage. During the air, the liquid in the fermentation chamber drops due to the pressure of the biogas. When the liquid falls to the bottom of the curved baffle, the excess biogas is discharged from the water pressure along the curved baffle wall, thereby avoiding the air pressure. Too big to say the pool. However, in this patent document, since there is no stirring device in the pool, the scum in the pool tends to be crusted and difficult to be broken, so the utilization rate of the fermentation raw material is not high, and the gas production rate of the tank is very low. And the book

Since the patent document directly connects the discharge port to the side wall of the water pressure, the discharge port is exposed to the air, and the ammonium nitrogen in the biogas is extremely volatile, which is also disadvantageous for maintaining the temperature of the biogas digester and affecting the production of the biogas digester. Gas volume.

Summary of the invention:

[0005] The utility model aims to provide a glass fiber reinforced plastic gas pool with high gas production capacity and low biogas production, which is not volatile, because the biogas gas pool of the prior art has low gas production and low volatility of biogas generated. The utility model has the characteristics of high gas production, good sealing effect and low biogas volatilization.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

The glass fiber reinforced plastic gas digester comprises a gas storage chamber and a fermentation chamber, and a feed pipe and an air outlet pipe connected to the gas storage chamber, and the utility model further comprises: an agitator, the annular wall of the gas storage outdoor wall is opened, and the stirring shaft of the agitator The annular hole extends into the fermentation chamber, and a stirring blade located in the fermentation chamber is disposed on the stirring shaft, and a clamping cover is disposed on the stirring shaft located outside the gas storage chamber, and the diameter of the card cover is not less than the inner diameter of the annular hole a discharge pipe is arranged in the fermentation chamber, a discharge cover is arranged at the outlet of the discharge pipe, and at least one single-guide gas pipe is arranged on the discharge cover, and the single-guide gas pipe passes through the inside of the discharge pipe and the gas storage chamber Connected.

[0007] The outlet pipe is a one-way outlet pipe having an inner diameter of 0.8-1.2 cm and an outer diameter of l-1.4 cm.

[0008] The stirring blade of the agitator is two leaves or three leaves.

[0009] A card slot is embedded in the stirring shaft, and the card cover is slidably connected to the stirring shaft through the card slot.

[0010] The single-guide air tube is two or three.

[0011] In use, through the feed pipe disposed on the outer wall of the gas storage and communicating with the gas storage chamber, plant stems such as wheat straw and mulberry branches are introduced into the fermentation chamber, and plant stems such as wheat straw and mulberry branches are In the fermentation chamber, the oxygen is deficient, and it is quickly spoiled. The spoilage fermentation produces a mixed combustible gas mainly composed of methane. The mixed combustible gas can be used for cooking, cooking, boiling water, etc. through the gas outlet pipe. The branches of plants such as wheat straw and mulberry branches are piled up more, and the fermentation will be insufficient. The wheat can be fully used by using a blender. Plant branches such as stalks and mulberry branches are fully stirred to promote complete decomposition and produce more mixed combustible gas. The agitator shaft is slidably connected with the card cover, and the agitator can be raised or lowered according to the number of plant branches such as wheat straw and mulberry branches, thereby achieving a better labor saving effect. Once the mixed combustible gas is more, the excess gas can be discharged through a single-guided gas pipe. Since it is unidirectional, the mixed combustible gas is not easily volatilized, and the mixed combustible gas is sufficient, and the biogas tank can be effectively avoided. Excessive mixing of flammable gas, resulting in excessive pressure, triggering a burst.

[0012] The advantages of the utility model are mainly manifested in the following aspects:

1. By installing a stirrer in the gas storage room, when the branches of wheat straw, mulberry branches and other plants are piled up more, the plant branches such as wheat straw and mulberry branches can be fully stirred by a stirrer to promote complete decomposition and produce more. Mixed flammable gas. The gas pressure in the biogas tank is sufficient to effectively stabilize and improve the combustion efficiency of the cooker.

[0013] Second, a single-way air pipe is arranged on the discharge pipe. Since it is unidirectional, the mixed combustible gas is not easily volatilized, and the sufficient accumulation of combustible gas in the gas storage chamber can be ensured for a long time. When there is too much flammable gas mixed in the biogas tank, the excess gas can be released through the single-pass air pipe, effectively avoiding the phenomenon that the gas pressure is too large due to excessive mixed flammable gas in the biogas tank, causing the explosion.

[0014] Third, the single-guide air pipe is increased to two, or even three, so that when there is too much mixed combustible gas in the biogas tank, the excess gas can be quickly discharged to avoid the occurrence of the explosion.

[0015] Fourth, the outlet pipe is set as a one-way outlet pipe, and the inner diameter is 0.8-1.2 cm, and the outer diameter is l-1.4 cm, which can uniformly transport the biogas to the gas equipment for combustion use.

[0016] 5. A card slot is embedded in the stirring shaft, and the card cover is slidably connected to the stirring shaft through the card slot. In this way, the agitator can be raised or lowered according to the number of plant stems such as wheat straw and mulberry branches, so that a better labor-saving effect can be achieved. DRAWINGS

1 is a schematic view of the structure of the present invention

2 is a schematic structural view of an embodiment of the present invention

3 is a schematic structural view of an embodiment of the present invention

4 is a schematic structural view of an embodiment of the present invention

Figure 5 is a schematic structural view of an embodiment of the present invention

Marked in the figure: 1, gas storage chamber, 2, fermentation chamber, 3, feeding tube, 4, outlet pipe, 5, agitator, 6, annular hole, 7, mixing shaft, 8, mixing blade, 9, card cover , 10, discharge pipe, 11, discharge cover, 12, single guide air pipe, 13, card slot.

Specific implementation:

[0018] Embodiment 1 As shown in FIG. 1, the glass fiber reinforced plastic gas digester comprises a gas storage chamber 1 and a fermentation chamber 2, and a feed pipe 3 and an air outlet pipe 4 communicating with the gas storage chamber 1, further comprising a stirrer 5, the outer wall of the gas storage chamber 1 having a ring shape The agitating shaft 7 of the agitator 5 extends into the fermentation chamber 2 through the annular hole 6, and the agitating blade 8 is disposed on the agitating shaft 7, and the agitating blade 8 is provided in the fermentation chamber 2. leaf. a chucking cover 9 is disposed on the agitating shaft 7 located outside the air storage chamber 1, and the diameter of the card cover 9 is not less than the inner diameter of the annular hole 6; a discharge pipe 10 is disposed in the fermentation chamber 2, and a discharge pipe is disposed A discharge cover 11 is disposed at the outlet, and a single guide air pipe 12 is disposed on the discharge cover 11, and the single-guide air pipe 12 passes through the inside of the discharge pipe 10 and communicates with the air storage chamber 1. The air outlet pipe 4 is a one-way air outlet pipe having an inner diameter of 0.8 cm and an outer diameter of 1 cm.

[0019] Example 2

As shown in FIG. 2, the glass fiber reinforced plastic gas digester comprises a gas storage chamber 1 and a fermentation chamber 2, and a feed pipe 3 and an air outlet pipe 4 communicating with the gas storage chamber 1, further comprising a stirrer 5, the outer wall of the gas storage chamber 1 having a ring shape The agitating shaft 7 of the agitator 5 extends into the fermentation chamber 2 through the annular hole 6, and the agitating blade 8 is disposed on the agitating shaft 7, and the agitating blade 8 is provided in the fermentation chamber 2. leaf. a chucking cover 9 is disposed on the agitating shaft 7 located outside the air storage chamber 1, and the diameter of the card cover 9 is not less than the inner diameter of the annular hole 6; a discharge pipe 10 is disposed in the fermentation chamber 2, and a discharge pipe is disposed A discharge cover 11 is disposed at the outlet, and a single guide air pipe 12 is disposed on the discharge cover 11, and the single-guide air pipe 12 passes through the inside of the discharge pipe 10 and communicates with the air storage chamber 1. The outlet pipe 4 is a one-way outlet pipe having an inner diameter of lcm and an outer diameter of 1.2 cm.

Embodiment 3

As shown in FIG. 3, the glass fiber reinforced plastic gas digester includes a gas storage chamber 1 and a fermentation chamber '2, a feed pipe 3 and an air outlet pipe 4 communicating with the gas storage chamber 1, and an agitator 5, and the outer wall of the gas storage chamber 1 is opened. The annular hole 6, the stirring shaft of the agitator 5 extends into the fermentation chamber 2 through the annular hole 6, and the stirring shaft 7 is provided with a stirring blade 8 located in the fermentation chamber 2, and the stirring blade 8 is Two leaves. 'The cover shaft 9 is sleeved on the agitating shaft 7 outside the air storage chamber 1. The diameter of the card cover 9 is not less than the inner diameter of the annular hole 6; a discharge tube 10 is arranged in the fermentation chamber 2, and the discharge tube is provided. A discharge cover 11 is disposed at the outlet of the tube 10, and a single-guide gas pipe 12 is disposed on the discharge cover 11, and the single-guide gas pipe 12 passes through the inside of the discharge pipe 10 and communicates with the gas storage chamber 1. The outlet pipe 4 is a one-way outlet pipe having an inner diameter of l.lcm and an outer diameter of 1.2 cm. A card slot 13 is embedded in the agitating shaft 7, and the card cover 9 is slidably coupled to the agitating shaft 7 through the card slot 13.

Embodiment 4

As shown in FIG. 4, the glass fiber reinforced plastic gas digester comprises a gas storage chamber 1 and a fermentation chamber 2, and a feed pipe 3 and an air outlet pipe 4 communicating with the gas storage chamber 1, further comprising a stirrer 5, the outer wall of the gas storage chamber 1 having a ring shape The agitating shaft 7 of the agitator 5 extends into the fermentation chamber 2 through the annular hole 6, and the agitating blade 8 is disposed on the agitating shaft 7, and the agitating blade 8 is provided in the fermentation chamber 2. leaf. a chucking cover 9 is disposed on the agitating shaft 7 located outside the air storage chamber 1, and the diameter of the card cover 9 is not less than the inner diameter of the annular hole 6; a discharge pipe 10 is disposed in the fermentation chamber 2, and a discharge pipe is disposed 10 The outlet is provided with a discharge cover 11 and a discharge cover. There are two single-guide air pipes 12 disposed on the eleven, and the one-way air pipe 12 passes through the inside of the discharge pipe 10 and communicates with the air storage chamber 1. The outlet pipe 4. is a one-way outlet pipe having an inner diameter of 1.2 cm and an outer diameter of 1.3 cm. A card slot 13 is embedded in the agitating shaft 7, and the card cover 9 is slidably coupled to the agitating shaft 7 through the card slot 13.

Embodiment 5

As shown in FIG. 5, the glass fiber reinforced plastic gas digester comprises a gas storage chamber 1 and a fermentation chamber 2, and a feed pipe 3 and an air outlet pipe 4 communicating with the gas storage chamber 1, further comprising an agitator 5, the outer wall of the gas storage chamber 1 having a ring shape The agitating shaft 7 of the agitator 5 extends into the fermentation chamber 2 through the annular hole 6, and the agitating blade 8 is disposed on the agitating shaft 7, and the agitating blade 8 is provided in the fermentation chamber 2. leaf. The agitator shaft 7 located outside the air storage chamber 1 is sleeved with a card cover 9 having a diameter not less than the inner diameter of the annular hole 6; a discharge tube 10 is disposed in the fermentation chamber 2, and discharging An outlet cover 11 is disposed at the outlet of the tube 10, and three single-guide air tubes 12 are disposed on the discharge cover 11, and the single-guide air tube 12 passes through the inside of the discharge tube 10 and communicates with the air storage chamber 1. The outlet pipe 4 is a one-way outlet pipe having an inner diameter of 1.2 cm and an outer diameter of 1.4 cm. A card slot 13 is embedded in the agitating shaft 7, and the card cover 9 is slidably coupled to the agitating shaft 7 through the card slot 13.

[0023] In use, through the feed pipe 3 disposed on the outer wall of the gas storage chamber 1 and communicating with the gas storage chamber 1, the plant stems such as straw, mulberry branches, etc., wheat straw and mulberry branches are introduced into the fermentation chamber 2. Because the plant branches are deficient in oxygen in the fermentation chamber 2, they are quickly spoiled. The spoilage fermentation produces a mixed combustible gas mainly composed of onychomycosis. The mixed combustible gas can be used for cooking, cooking, boiling water, etc. through the gas outlet pipe 4. . The branches of wheat straw, mulberry branches and other plants are piled up more, and the fermentation will be insufficient. By using the agitator 5, the plant branches such as wheat straw and mulberry branches can be fully stirred to promote complete decomposition and produce more mixed combustible gas. . The mixing shaft 7 is slidably connected with the card cover 9, and the agitator 5 can be raised or lowered according to the number of plant branches such as wheat straw and mulberry branches, thereby achieving a better labor saving effect. Once the mixed combustible gas is more, the excess gas can be discharged through the single-guide gas pipe 12. Since it is unidirectional, the mixed combustible gas is not easily volatilized, and the mixed combustible gas is sufficient, and the biogas tank can be effectively avoided. Excessive mixing of flammable gas, resulting in excessive pressure, triggering a burst.

[0024] The present invention is not limited to the above embodiments, but should fall within the scope of the claims of the present invention.

Claims

Claim

1. A glass steel biogas digester, comprising a gas storage chamber (1) and a fermentation chamber (2), a feed pipe (3) and an air outlet pipe (4) connected to the gas storage chamber (1), characterized in that: an agitator is further included (5), the outer wall of the gas storage chamber (1) has an annular hole (6), agitator

(5) The stirring shaft (7) extends into the fermentation chamber (2) through the annular hole (6), and the stirring shaft (7) is provided with a stirring blade located in the fermentation chamber (2) ( 8), a cover is placed on the agitator shaft (7) located outside the air reservoir (1)

(9), the diameter of the card cover (9) is not less than the inner diameter of the annular hole (6); a discharge pipe (10) is disposed in the fermentation chamber (2), and the outlet of the discharge pipe (10) is disposed There is a discharge cover (11), and the discharge cover (11) is provided with at least one single-guide air pipe (12), and the single-guide air pipe (12) passes through the inside of the discharge pipe (10) and is connected with the air storage chamber (1) Connected.

2. The FRP biogas tank according to claim 1, wherein: the gas outlet pipe (4) is a one-way gas outlet pipe having an inner diameter of 0.8-1.2 cm and an outer diameter of 1-L4 cm.

3. A FRP biogas digester according to claim 1 or 2, characterized in that the agitating blades (8) of the agitator (5) are two or three leaves.

4. The FRP biogas digester according to claim 1, wherein: the stirring shaft (7) is embedded with a card slot (13), and the card cover (9) slides through the card slot (13) and the stirring shaft (7). connection.

5. The FRP biogas digester according to claim 1, wherein: the single-guide gas pipe (12) is two or three.