CN111139166A

CN111139166A - Methane generating device

Info

Publication number: CN111139166A
Application number: CN201910809010.2A
Authority: CN
Inventors: 董炳吉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-12

Abstract

The invention relates to a biogas generating device. More particularly, the present invention relates to a biogas generating apparatus having a gas production line capable of mass-producing biogas, which is an energy source for the biogas, including all corrodible green plants, animal excrements, food residues, etc., and which has a high applicability as a substitute gas, can be used as a substitute gas for reducing fine dust, and is an inexhaustible and environmentally friendly resource.

Description

Methane generating device

Technical Field

The invention relates to a biogas generating device.

More particularly, the present invention relates to a biogas generating apparatus having a gas production line capable of mass-producing biogas, which is an energy source for the biogas, including all corrodible green plants, animal excrements, food residues, etc., and which has a high applicability as a substitute gas, can be used as a substitute gas for reducing fine dust, and is an inexhaustible and environmentally friendly resource.

Background

Currently, the world faces serious energy problems due to the non-renewable energy resources.

According to 2016 statistics of the International gas alliance, annual natural gas import is ranked 85600000t for Japan, 33400000t for Korea and 19800000t for China.

It is believed that the consumption of natural gas made from mineral resources incurs severe dusting. On the contrary, biogas is a clean resource and an important resource for the continuous development of the economy of each country.

All organic matter is released into methane through bacterial corrosion when the temperature in the accumulated water is proper. The biogas is burnt without any chemical substances left, so that the biogas is an environment-friendly gas.

The methane can replace natural gas to be widely used, and the economic value of the methane is very high.

In addition, the resources of the biogas are inexhaustible. All corrodible things such as green plants, animal excrements and food residues (garbage) can become energy resources.

Further, since the fuel gas can be used as a substitute gas for automobiles, boilers, and the like, the fuel gas can be used as a measure for reducing fine dust.

Although such biogas has been studied and administered since a long time ago, most of them have tried to use the original method, and therefore, the research and the popularization thereof are almost interrupted due to various problems in management, post-treatment, and the like.

The applicant has therefore sought to provide a device provided with a production line capable of producing biogas.

As a technique for producing biogas, registered utility model No. 20-0218965 discloses a biogas utilization and liquid manure production apparatus using feces and urine.

The above technology relates to a biogas utilization and liquid manure production device using feces and urine, and more particularly, to an effective utilization of feces and urine of livestock which causes serious pollution to water quality, atmosphere, soil, etc. and an energy saving countermeasure in the times of high oil prices.

In addition, a pipe and a discharge port are separately provided, through which the excrement and urine are automatically sucked and floating materials and sludge (slurry) can be discharged, respectively, and the water level is adjusted when the excrement is excessively sucked. The generated biogas is deodorized in the gas purification device, moved to a gas storage and collection device to be stored, and moved to a place of use at a high pressure by a gas pressurization facility.

Therefore, if the septic tank of the existing livestock farmer is maintained and the device is arranged, the heating cost and the cooking fuel cost of the corresponding farm and the adjacent farmer are greatly reduced, so that the effect of reducing high oil price energy sources and using the sediment as odorless and nuisanceless organic fertilizer can be achieved.

As another technique, the laid-open patent publication No. 10-2003-0013366 describes a method and an apparatus for producing biogas containing methane from organic matter.

The above technology relates to a 3-step process for producing biogas containing a large amount of methane from organic matter. The method comprises an aerobic fermentation step, a carbonization step and an aerobic biogas fermentation step.

As another technique, a biogas production system using a multi-step anaerobic digester is described in the registered patent application publication No. 10-1278514.

The above technology provides a biogas production system using a multi-step anaerobic digester, which divides a digester for producing biogas into 12 chambers, divides the digester into 4 steps and makes 3 chambers into one group, recirculates fluid in each step, hierarchically adjusts the amount of recirculation according to the difference in organic load rate and the properties of microorganisms, and makes the biomass density of each chamber different, thereby improving the digestion rate and the biogas production rate.

Therefore, the above-mentioned technology, from the containing bacteria inhabitation of the biological square cavity 1 to cavity 12 inside the digester sequentially supply fluid to produce biogas, from the above-mentioned cavity 1 to cavity 3 constitute organic load rate very high 1 step digester, from the above-mentioned cavity 4 to cavity 6 and from cavity 7 to cavity 9 constitute organic load to the middle 2 steps and 3 steps digester; a 4-step digestion tank with the lowest organic matter load rate is formed from the cavity 10 to the cavity 12, and a mechanism for reversely recycling the fluid is formed at the lower part of the digestion tank at each stage; the 1-step digestion tank described above, which is provided with a plurality of recirculation pipes connected from the chamber 3 to the chamber 1 and independent circulation pumps provided in these respective recirculation pipes; in the 2-step digestion tank described above, a plurality of recirculation pipes connected from the chamber 6 to the chamber 4 and independent circulation pumps provided in these respective recirculation pipes are provided; in the 3-step digestion tank, a plurality of recirculation pipes connected from the chamber 9 to the chamber 7 and independent circulation pumps provided in these respective recirculation pipes are provided; in the 4-step digestion tank, a plurality of recirculation pipes connected from the chamber 12 to the chamber 10 and independent circulation pumps provided in these respective recirculation pipes are provided.

Further, the registered patent publication No. 10-1147982 discloses a pretreatment system for a biogas production facility.

The above-described technology relates to a pretreatment system for biogas production facilities, and more particularly, to a pretreatment system for biogas production facilities, which has a simple and simple structure, can effectively remove impurities contained in biogas, appropriately cope with changes in external conditions such as the concentration or input amount of organic waste flowing into the pretreatment system, and can effectively purify biogas, and can realize a pretreatment system using a small occupied space, thereby reducing facility investment costs and maintenance costs.

However, the above-described technology is structurally different from the biogas production line which the applicant proposes.

Patent document

Registering utility model patent gazette: no. 20-0218965 (2001.04.02. notice)

Patent publications disclosing invention: 10-2003-0013366 (2003.02.14 publication)

Patent publications of registered inventions: no. 10-1278514 (2013.06.25. notice)

Patent publications of registered inventions: no. 10-1147982 (2012.06.01. notice)

Disclosure of Invention

Problems to be solved

The present invention has an object to provide a biogas generating apparatus having a gas production line capable of mass-producing biogas, which is an inexhaustible and environmentally friendly resource, and which can use all of corrodible green plants, animal excrements, food residues, and the like as energy sources of the biogas, and which has high applicability as a substitute gas, and which can be used as a substitute gas for reducing fine dust.

Means for solving the problems

The present invention has been made to achieve the above object, and according to the methane gas generating apparatus of the present invention, raw materials are pretreated, a mixture is obtained by mixing a corrosive compost with the pretreated raw materials, and then a corrosive material obtained by fermenting the mixture is generated into methane gas by a gas generating unit; it is characterized in that the preparation method is characterized in that,

a gas generating section for generating biogas from the corrosive material passing through the corrosive material transport pipe by maintaining a predetermined temperature in a main body of the gas generating section, the generated biogas being discharged to the outside of the corrosive material transport pipe through a bubble port formed in the corrosive material transport pipe, the biogas being collected in a collecting region of the main body;

when the pressure inside the body reaches a certain value, the collected biogas is conveyed to a high pressure tank.

In this case, the body of the gas generating part is composed of an outer wall and an inner wall, the outer wall and the inner wall are separated to form a hollow space, and a heat insulating layer is formed in the hollow space; the bottom surface of the body is provided with carbon fiber heating cloth formed by carbon fiber cloth, so that the temperature inside the body is maintained at the temperature which can be corroded by a corrosive material.

The body is configured to contain water therein, the corrosive material transport pipe is disposed in the body and immersed in the water, both ends of the pipe penetrate the body to expose to the outside, one of the both ends is an inlet, and the other end is an outlet; the corrosive material injected into the injection port is corroded in the process of passing through the corrosive material conveying pipe, and is discharged as compost through the discharge port.

In addition, the corrosive material conveying pipe is provided with a plurality of bubble ports on one side of the outer surface, and methane generated by the corrosive material is discharged to the outside of the corrosive material conveying pipe; an auxiliary bubble opening with a size larger than that of the bubble opening is formed in one side of the corrosive material conveying pipe adjacent to the discharge opening, the corrosive material conveying pipe area perforated with the auxiliary bubble opening is formed in a diagonally protruding manner, and biogas which is not discharged to the outside of the corrosive material conveying pipe due to blockage of the bubble opening is discharged through the auxiliary bubble opening.

Further, a conveyance assisting portion that assists conveyance of the etching material from the inlet to the outlet is formed on one side of the etching material conveying pipe.

Further, the gas generating section further comprises a high-pressure tank connected to the body by a gas carrying pipe; and one side of the gas conveying pipe is provided with a gas pump for conveying gas and a valve for opening and closing the high-pressure tank.

In addition, the biogas collecting device is characterized by also comprising a pressure detector on one side of the body, when the pressure of the biogas collected in the collecting area of the body reaches a certain value, the air pump and the valve are driven, and the biogas in the collecting area is conveyed to the high-pressure tank.

In addition, the end parts of the injection port and the discharge port are also provided with covers.

The invention has the following beneficial effects:

according to the biogas production apparatus of the present invention, there is provided a gas production line in which all corrodible green plants, excreta of animals, food residues, etc. can be used as energy sources of the biogas, and the biogas has high applicability as a substitute gas, can be used as a substitute gas for reducing fine dust, and is an inexhaustible resource for the environment.

Drawings

Fig. 1 is a diagram showing the structure of a biogas production apparatus according to the present invention.

Fig. 2 and 2a are views showing the structure of a gas generating unit of a biogas generating apparatus according to the present invention.

Fig. 3 is a view showing an example in which a gas generating section of a biogas generating apparatus according to the present invention is applied to an apartment building.

Wherein the reference numerals are as follows:

100: a pretreatment section; 200: a mixing section; 300: a fermentation part; 400: a gas generation unit; 1: a body; 1 a: an outer wall; 1 b: an inner wall; 1 c: a thermal insulation layer; 2: carbon fiber heating cloth; 3: a corrosive material transport pipe; 3 a: a bubble port; 3 b: a conveyance assisting section; 3 c: an injection port; 3 d: an outlet port; 3 e: an auxiliary bubble port; 4: a composting tank; 5: a motor; 6: a pressure detector; 7: a gas delivery tube; 8: a high pressure tank; 9: an air pump; 10: valve gate

Detailed Description

The terms or words used in the specification and claims should not be construed as being limited to general or dictionary meanings, and should be construed as meanings and concepts conforming to the idea of the present invention on the basis of the principle that the inventor can appropriately define the concept of the terms in order to explain his invention in the most preferable way.

Therefore, the embodiments described in the present specification and matters shown in the drawings are merely the most preferable embodiments of the present invention and do not represent the technical idea of the present invention, and it should be understood that various equivalents and modifications may be possible in place of them at the time of the present application.

It should be clear that, in order to highlight the gist of the present invention, a known structure that is an unnecessary matter and is obvious to a person skilled in the art may be added is not illustrated or specifically described below with reference to the drawings.

The invention relates to a biogas generating device.

Fig. 1 shows a configuration of a biogas generating apparatus according to the present invention.

As shown in fig. 1, the present invention includes: a pretreatment unit 100, a mixing unit 200, a fermentation unit 300, and a gas generation unit 400.

The pretreatment unit 100, the mixing unit 200, the fermentation unit 300, and the gas generation unit 400 are devices or working spaces that can be realized by those skilled in the art with reference to the present specification.

The pretreatment unit 100 has a function of pretreating a raw material for generating biogas. In this case, the pretreatment is a step of cutting or powdering the raw material according to the kind of the raw material. For example, a mower may be used to cut weeds, straw, and the like, and corroded wood may be pulverized.

The mixing section 200 has a function of mixing the raw material pretreated by the pretreatment section 100 with the corrosion compost. In this case, the corrosion compost means livestock manure, food waste, clay, humus, compost discharged from a gas generator described later, and the like.

The fermenting part 300 has a function of covering the mixture mixed in the mixing part 200 with plastic or the like to retain moisture and hot air to ferment.

The fermentation is carried out for about one week, and the internal temperature is raised to 60-70 ℃ by an acid reaction in the fermentation process. For example, after a week of fermentation, the fermentation may be performed for 3 days by turning over.

The gas generating section 400 has the following functions: injecting a corrosive material fermented in the fermenting part 300 to generate biogas, and discharging compost remaining after the generation of the biogas.

The gas generating unit 400 is buried under the ground to improve the efficiency of use of the ground, and can be maintained at a specific temperature (for example, 15 ℃ C. above zero) even at a temperature lower than 35 ℃ C. in cold winter.

Such a gas generation part 400 is explained by fig. 2 of the drawings.

Fig. 2 shows a structure of a gas generating part of the biogas generating apparatus according to the present invention.

The gas generator 400 shown in fig. 2 of the drawings includes a main body 1, and the main body 1 includes an outer wall 1a and an inner wall 1b which are separated from each other and have a hollow space, and a heat insulating layer 1c is formed in the hollow space.

The main body 1 is in the form of a general water tank, and can be provided with a corrosive material conveying pipe 3 inside, and the main body 1 contains water in which the corrosive material conveying pipe 3 can be completely immersed. In addition, an empty space is formed above the water surface formed by the water, and the space can be a space for collecting biogas generated by the corrosive material. For this, as shown in the drawings, the upper side of the body 1 may be in a dome shape, but is not limited thereto.

In addition, a carbon fiber heating cloth 2 may be formed at one side of the bottom surface of the body 1.

The carbon fiber heating cloth 2 is a cloth made of carbon fiber, and the cloth can stably supply heat to 80 ℃ by 12V electricity, so that the temperature inside the body 1 can be always kept at a certain temperature regardless of seasons.

Such temperature maintenance may be performed by a manager or automatically by the linkage of the temperature sensor and the control unit. This is not particularly limited.

One of the opposite ends of the etching material transfer pipe 3 is an inlet 3c, and the other end is an outlet 3 d. Since the compost remaining after the generated gas is discharged from the discharge port 3d, a compost tank 4 for receiving the compost may be provided in the discharge port 3 d.

Further, the corrosive material fermented in the fermentation part 300 is injected into the injection port 3 c.

In order to move the corrosive material through the corrosive material transport pipe 3, a transport auxiliary portion 3b as a transport mechanism may be formed on an inner wall of the corrosive material transport pipe 3, and the transport auxiliary portion 3b may be configured by, for example, a screw, a roller, a rail, or the like. Further, a motor 5 for controlling the carrying auxiliary portion 3b may be formed at one side of the main body 1.

The structure for transmitting the power of the motor 5 to the conveyance assisting section 3b can be any structure that can be predicted by a person skilled in the art.

The conveyance assisting section 3b may be provided on the entire inner wall of the etching material conveying pipe 3, but may be provided only in the vicinity of the injection port 3 c. That is, the etchant injected through the injection port 3c is a system in which the previously injected etchant is continuously pushed out.

When the transport assisting section 3b is formed of, for example, a roller, 1 or more rollers are provided on the inner wall of the corrosive material transport pipe 3 so as to be axially rotatable, and the shaft of the roller is energized from the motor 5 so as to rotate the roller. If the erosion material is injected into the injection port as the roller rotates, the injection can be induced.

When the transport assisting section 3b is formed of a rail, the etching material transport pipe 3 is formed in the longitudinal direction, and a rail frame is provided at a predetermined interval from the inner wall, and rails for driving to both sides are provided on the rail frame. The rail is engaged with a combination of rollers or gears provided on a rail frame, and can be driven along both front and rear surfaces with respect to the rail frame, and the corrosive material is transported inside the corrosive material transport pipe 3 as the rail is driven.

The inlet 3c and the outlet 3d may further include a cover for opening and closing them. The cover is in a structure that the hinge is used as a shaft to rotate for opening and closing, and the rest can be arranged in various modes such as a sliding rail mode, a full-automatic mode and the like. The cap is sufficient if it can open or close the ends of the inlet 3c and the outlet 3d, and the opening and closing can be performed automatically or manually.

This cap has a heat insulating function, and prevents the temperature inside the corrosive material transfer pipe 3 from decreasing after the corrosive material is injected and until the corrosive material is discharged.

In addition, a plurality of bubble openings 3a may be formed regularly or irregularly in the erosion material conveyance pipe 3.

That is, the corrosive material flowing through the corrosive material transfer pipe 3 is corroded by temperature while passing through the corrosive material transfer pipe 3 to generate biogas, and the biogas rises in water while being discharged through the bubble port 3a, and is collected in the collection area of the main body 1.

In addition, an auxiliary bubble port 3e may be formed on one side of the etching material transport pipe 3, on the side located inside the body 1, of the side adjacent to the discharge port 3 d.

The auxiliary bubble port 3e is formed by punching the etching material transfer pipe 3, and is formed by protruding the punched area in an oblique line direction. Has a function of assisting discharge of the biogas remaining in the corrosive material transfer pipe 3 when the bubble port 3a is closed and the biogas is not discharged. Therefore, the auxiliary bubble opening can be formed larger than the bubble opening.

Further, although not shown, a water level sensor for maintaining the body 1 at a constant water level, a water pipe for continuously filling water based on the water level sensor, and a valve may be further included.

The biogas collected in the collection area of the body 1 is maintained at a low pressure (constant pressure). Therefore, the main body 1 includes a pressure sensor 6 on the collection area side, and when a certain pressure is reached, the biogas in the collection area is transported to a high-pressure tank 8 through a gas transport pipe 7 by an air pump 9. Thus, the delivery of biogas can be controlled, including the valve 10.

That is, since the main body 1 is not configured to be able to bear a high pressure, it is transported to the high-pressure tank 8 for safe storage of gas and stored.

Such a gas generation part 400 according to the present invention may be provided in an apartment.

In this case, although the above-described structure is included in the same manner, the structure may be slightly changed as shown in fig. 3.

Fig. 3 shows an example in which the gas generating section of the biogas generating apparatus according to the present invention is applied to an apartment building. Such figure 3 shows a floor installed in an apartment building. That is, in the case of fig. 3, the above-described structure is applied to an apartment building, and a large number of production line facilities are installed, so that a gas generation plant of a large scale is aimed to be formed.

In the above-described structure, in which the corrosive material transfer pipe 3 penetrates the main body 1, the corrosive material transfer pipe 3 may penetrate, which may reduce the heat insulating effect of the main body 1. In order to prevent this risk, a sealing member which surrounds an outer surface fixing the corrosive material conveying pipe 3 and has a shape of "l" with an end portion bent to the outside, and a ring member coupled to the sealing member may be included. Such a ring member includes a bore having an inner diameter corresponding to the outer diameter of the unbent end of the seal member, with threads formed in the bore.

In this sealing member, a thread is formed on the outer surface of the end portion which is not bent, and a protrusion layer of a flexible material which repeats irregularities may be formed on the outer surface of the region which is not bent. Such a protrusion layer is formed along the circumferential direction of the outer surface of the sealing member which penetrates the region where the body 1 is penetrated and then blocks between the outer wall 1a and the inner wall 1b of the body 1.

Such a seal member is inserted into one side of the corrosive material transfer pipe 3, and penetrates the penetrating region of the main body 1 together with the corrosive material transfer pipe 3, and the other side ring member is fixed to the seal member by a screw.

According to such a configuration, a through region is formed on one side of the main body 1, and thus, even if the corrosive material transfer pipe 3 is connected, the heat insulating function can be prevented from being lowered.

Thus, having observed that the preferred embodiments according to the present invention may be embodied in other specific forms than those herein set forth without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the above-described embodiments are intended to be illustrative, and not restrictive, and the invention is not to be limited to the above-described embodiments, but may be modified within the scope and equivalents of the appended claims.

Claims

1. A biogas generating apparatus, pretreat raw materials, mix the pretreated raw materials with compost for corrosion to obtain the mixture, make the said mixture ferment the corrosive material obtained and produce the biogas through the gas generator; it is characterized in that the preparation method is characterized in that,

2. Biogas production plant according to claim 1,

the body of the gas generating part consists of an outer wall and an inner wall, a separated hollow space is formed between the outer wall and the inner wall, and a heat insulation layer is formed in the hollow space;

the bottom surface of the body is provided with carbon fiber heating cloth formed by carbon fiber cloth, so that the temperature inside the body is maintained at a temperature at which the corrosive material can corrode.

3. Biogas production plant according to claim 1,

water is contained in the inner part of the body,

the corrosive material conveying pipe is arranged in the body and is soaked in water, two end parts of the corrosive material conveying pipe penetrate through one side of the body and are exposed to the outside, one end part of the two end parts is an injection port, and the other end part is an exhaust port;

the corrosive material injected into the injection port is corroded in the process of passing through the corrosive material conveying pipe, and is discharged as compost through the discharge port.

4. Biogas production plant according to claim 3,

a plurality of bubble ports are formed on one side of the outer surface of the corrosive material conveying pipe, and methane generated by the corrosive material is discharged to the outside of the corrosive material conveying pipe;

an auxiliary bubble opening with a size larger than that of the bubble opening is formed in one side of the corrosion material conveying pipe adjacent to the discharge opening, the corrosion material conveying pipe area perforated with the auxiliary bubble opening is formed in a diagonally protruding manner, and methane which is not discharged to the outside of the corrosion material conveying pipe due to blockage of the bubble opening is discharged through the auxiliary bubble opening.

5. Biogas production plant according to claim 2,

a conveying auxiliary part is formed on one side of the corrosive material conveying pipe and assists conveying of the corrosive material from the injection port to the discharge port.

6. Biogas production plant according to claim 1,

the gas generating section further comprises a high pressure tank connected to the body by a gas carrying pipe;

and one side of the gas conveying pipe is provided with a gas pump for conveying gas and a valve for opening and closing the high-pressure tank.

7. Biogas production plant according to claim 6,

the pressure detector is arranged on one side of the body;

when the pressure of the collected biogas in the collection area of the body reaches a certain value, the air pump and the valve are driven, so that the biogas in the collection area is conveyed to the high-pressure tank.

8. Biogas production plant according to claim 3,

the end parts of the filling opening and the discharging opening are also provided with covers.