Combustible gas recycling mechanism in straw charcoal processing

Abstract

The utility model relates to a combustible gas recycling mechanism in straw biochar processing, which belongs to the technical field of straw biochar processing and comprises a gas washer, a gas inlet connecting pipe and an exhaust connector. The top of the gas scrubber is communicated with an exhaust connector, the bottom of the left side of the gas scrubber is communicated with a gas inlet connecting pipe, the exhaust connector is communicated with a gas pipe, and the other end of the gas pipe is communicated with a gas spraying head which is used for heating the carbonization tank and providing combustible gas. According to the mechanism for recycling the combustible gas in the processed straw biochar, an arranged gas inlet connecting pipeline is connected with a waste gas opening of a carbonization tank, meanwhile, impurities in waste gas are fully treated in cooperation with an arranged purification assembly, and purified water is prevented from reacting with the combustible gas through a cooling assembly; the filtering and deslagging mechanism is arranged, so that impurities are collected and treated, dry and impurity-free gas is ensured to enter the gas washer for reaction, and the purity of the combustible gas is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to straw biochar processing technical field, specifically is a kind of combustible gas recycling mechanism in processing straw biochar. BACKGROUND

[0002] Straw biochar carbonization tank is a kind of equipment for converting agricultural straw and other organic matter into biochar, and biochar is a kind of carbon-rich solid material with good soil improvement effect and environmental protection effect.

[0003] Combustible gas is generated during the carbonization process of straw biochar carbonization tank. These combustible gases are mainly produced by pyrolysis of straw under high-temperature and oxygen-deficient environment. Specifically, the following gases are released during the carbonization process: carbon monoxide: a colorless and odorless combustible gas with certain toxicity.

[0004] Methane: a greenhouse gas, also a combustible gas, which can be used for energy recovery.

[0005] Volatile organic compounds: including various organic gases, some of which are also flammable.

[0006] Hydrogen: under high-temperature conditions, some organic matter may be converted into hydrogen.

[0007] The combustible gas generated during the carbonization process of straw biochar can be recycled in various ways. The following are some common recycling methods:

[0008] Install gas collection device: in the design of carbonization tank, gas collection pipeline can be installed to guide the generated combustible gas into storage tank or treatment system.

[0009] Gas purification: the collected combustible gas may contain impurities, which need to be purified to remove harmful components and impurities to ensure the quality of the gas.

[0010] Based on the recycling and collection of combustible gas in the prior art, a filter screen activated carbon structure is generally used to filter impurities in the gas, but a large amount of dust is generated during the conversation process, which leads to the phenomenon that small particle dust cannot be filtered during filtration, and the filtered dust cannot be treated in time, which easily causes blockage and affects the effect of gas collection and recycling. Therefore, the utility model designs a kind of combustible gas recycling mechanism in processing straw biochar to improve the filtration effect of impurities and facilitate the treatment of filtered impurities, to solve this prior art defect. UTILITY MODEL CONTENTS

[0011] In view of the shortcomings of the prior art, the utility model provides a kind of combustible gas recycling mechanism in processing straw biochar, which has the advantages of improving the filtration effect of impurities and facilitating the treatment of filtered impurities.

[0012] In order to achieve the above object, the utility model provides the following technical scheme: a kind of combustible gas recycling mechanism in processing straw biochar, including gas scrubber, air inlet connecting pipe and exhaust connecting head;

[0013] The top of the gas scrubber is communicated with the exhaust connecting head, the left bottom of the gas scrubber is communicated with the air inlet connecting pipe, the exhaust connecting head is communicated with the gas pipe, and the other end of the gas pipe is communicated with the gas jet head for heating the carbonization tank to provide combustible gas.

[0014] The air inlet connecting pipe is communicated with the purification assembly for entering the carbonization tank to produce gas purification;

[0015] Water for entering gas impurity filtration is injected into the purification assembly;

[0016] The purification assembly is provided with a cooling assembly for cooling the purified water;

[0017] The purification assembly is also provided with a filtering and residue discharging mechanism.

[0018] As a preferred technical scheme of the utility model, the purification assembly includes a gas cooler communicated with the other end of the air inlet connecting pipe, a purification cylinder communicated with the gas inlet of the gas cooler, and a waterproof and breathable membrane provided at the connection between the gas cooler and the purification cylinder.

[0019] The purification cylinder is used to store water for purifying impurities, the bottom of the purification cylinder is communicated with an impurity sedimentation cylinder, an air inlet connecting pipeline is communicated between the left top of the impurity sedimentation cylinder and the exhaust port of the carbonization tank, an on-off valve is communicated with the outside of the air inlet connecting pipeline, and a cover is inserted into the opening at the bottom of the impurity sedimentation cylinder.

[0020] As a preferred technical scheme of the utility model, the cooling assembly includes a cooling fan fixedly installed on the left side of the purification cylinder, an annular cavity formed in the interior of the purification cylinder, and a heat conduction cylinder fixedly installed on the inner wall of the purification cylinder, a plurality of heat conduction rods penetrating through the purification cylinder are fixedly installed on the outer wall of the heat conduction cylinder, a plurality of heat dissipation fin seats located in the annular cavity are fixedly installed between the other ends of the heat conduction rods, and a plurality of heat dissipation fins are annularly and equidistantly distributed on the outer side of the heat dissipation fin seat.

[0021] The exhaust port of the cooling fan is communicated with the gas pipe, the other end of the gas pipe is communicated with the annular pipe located in the annular cavity, the top of the annular pipe is communicated with a plurality of air blowing heads equal in number to the heat dissipation fins and located between adjacent two heat dissipation fins, respectively, and an exhaust hole communicated with the annular cavity is formed in the top of the outer side of the purification cylinder.

[0022] As a preferred technical scheme of the utility model, the filter residue discharging mechanism comprises a moving disc movably embedded in the bottom of the purification cylinder and having a diameter equal to the inner diameter of the impurity precipitation cylinder, a support frame fixedly installed on the bottom wall of the purification cylinder, and two left-right symmetrical perforations provided on the moving disc, wherein a filter screen is installed in the perforations, an electric push rod is fixedly installed on the top of the support frame, a mounting frame in sliding connection with the support frame is fixedly installed on the push rod of the electric push rod, and a micro motor is fixedly installed on the bottom of the mounting frame.

[0023] The output shaft of the micro motor is provided with a plugging member for plugging and sealing the perforations.

[0024] As a preferred technical scheme of the utility model, the plugging member comprises cover plates fixedly installed on both sides of the output shaft of the micro motor.

[0025] The cover plates are located above the perforations, a plurality of elastic telescopic rods are fixedly installed on the bottom of the cover plates, and a rubber plugging block for plugging and sealing the perforations is fixedly installed between the bottoms of the elastic telescopic rods.

[0026] As a preferred technical scheme of the utility model, the elastic telescopic rod is composed of a spring and a telescopic rod, the rubber plugging block is concentric with the perforations, and the diameter of the rubber plugging block is greater than that of the perforations.

[0027] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0028] The processing straw biochar combustible gas recycling mechanism is provided with an air inlet connecting pipeline connected to the waste gas outlet of the carbonization tank, a purification assembly for fully treating impurities in the waste gas, and a cooling assembly for avoiding the reaction between the purified water and the combustible gas, so that the impurities can be collected and treated by the filter residue discharging mechanism, dry and impurity-free gas can be ensured to enter the gas scrubber for reaction, and the purity of the combustible gas is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 It is a perspective view of the utility model;

[0030] Fig. 2 It is a sectional view of the utility model;

[0031] Fig. 3 It is an enlarged view of A in the utility model;

[0032] Fig. 4 It is a partial perspective view of the utility model;

[0033] Fig. 5 It is a perspective view of the micro motor and the cover plate connection of the utility model.

[0034] In the figure: 1, gas scrubber; 2, exhaust connection; 3, gas inlet connection pipe; 4, gas cooler; 5, purification cylinder; 6, waterproof air-permeable membrane; 7, gas inlet connection pipeline; 8, annular cavity; 9, heat conduction cylinder; 10, heat conduction rod; 11, heat dissipation fin seat; 12, heat dissipation fin; 13, annular pipe; 14, air blowing head; 15, heat dissipation fan; 16, air pipe; 17, impurity precipitation cylinder; 18, on-off valve; 19, moving disc; 20, perforation; 21, filter screen; 22, cover; 23, support frame; 24, electric push rod; 25, mounting frame; 26, micro motor; 27, cover plate; 28, elastic telescopic rod; 29, rubber plugging block. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figs. 1 to 5 The gas recycling mechanism for processing combustible gas in straw biochar in the embodiment includes a gas scrubber 1, a gas inlet connection pipe 3 and an exhaust connection 2.

[0037] The straw carbonization tank produces combustible gas (such as wood tar gas, methane, etc.) during the carbonization process. These gases can be treated by the gas scrubber 1 to remove impurities and pollutants, thereby improving the combustion efficiency and safety. The working principle of the straw carbonization tank for recycling combustible gas and using the gas scrubber 1 is as follows:

[0038] Gas generation: In the straw carbonization tank, the straw is pyrolyzed under high-temperature and oxygen-deficient conditions to produce solid carbon, combustible gas and liquid byproducts. The combustible gas is guided out through the exhaust pipe.

[0039] Gas introduction: The generated combustible gas enters the gas scrubber through the pipeline.

[0040] Spraying of scrubbing liquid: The gas scrubber 1 is internally provided with a spraying device, and the scrubbing liquid (usually water or a specific chemical solution) is sprayed into the path of the gas flow. The selection of the scrubbing liquid depends on the type of pollutants to be removed.

[0041] Gas-liquid contact: The combustible gas is in full contact with the scrubbing liquid, and the pollutants (such as particulate matter, acidic gas, tar, etc.) are removed by the scrubbing liquid through physical adsorption, chemical reaction or dissolution, etc.

[0042] Separation: The scrubbed gas and the scrubbing liquid are separated. The gas is passed through a separation device (such as a settling chamber or filter) to remove liquid droplets and solid particles, ensuring the cleanliness of the gas.

[0043] Particle capture: Solid particles in the gas are captured by the scrubbing liquid.

[0044] Separation: The scrubbed gas and the scrubbing liquid are separated. Typically, the gas is passed through a separation device (such as a settling chamber or filter) to remove liquid droplets and solid particles.

[0045] The top of the gas scrubber 1 is connected to an exhaust connection head 2, and the left side of the bottom of the gas scrubber 1 is connected to an air inlet connection pipe 3. The exhaust connection head 2 is connected to an air pipe, and the other end of the air pipe is connected to a gas jet head for providing combustible gas for heating the carbonization tank.

[0046] In this embodiment, the air inlet connection pipe 3 is connected to a purification assembly for entering the carbonization tank to purify the gas generated by carbonization. The purification assembly is filled with water for filtering impurities in the gas.

[0047] It should be noted that the purification assembly includes a gas cooler 4 connected to the other end of the air inlet connection pipe 3. The gas cooler 4 is connected to a purification cylinder 5 at the air inlet. A waterproof and breathable membrane 6 is provided at the connection between the gas cooler 4 and the purification cylinder 5.

[0048] The gas cooler 4 is a device for reducing the temperature of the gas and is a direct application of existing technology in the present utility model.

[0049] The purification cylinder 5 is used to store water for purifying impurities. The bottom of the purification cylinder 5 is connected to an impurity sedimentation cylinder 17. The left side of the top of the impurity sedimentation cylinder 17 is connected to an air inlet connection pipeline 7 between the exhaust port of the carbonization tank. The outside of the air inlet connection pipeline 7 is connected to a switch valve 18. The bottom opening of the impurity sedimentation cylinder 17 is inserted with a cover 22.

[0050] The purification assembly in this embodiment is provided with a cooling assembly for cooling the purified water.

[0051] It should be noted that the cooling assembly includes a cooling fan 15 mounted and fixed to the left side of the purification cylinder 5, an annular cavity 8 opened in the interior of the purification cylinder 5, and a heat conduction cylinder 9 fixedly installed on the inner wall of the purification cylinder 5 in a hollow cylindrical shape. A plurality of heat conduction rods 10 are fixedly installed on the outer wall of the heat conduction cylinder 9 and penetrate the purification cylinder 5. The other end of the heat conduction rod 10 is fixedly installed with a heat dissipation fin seat 11 in a hollow cylindrical shape inside the annular cavity 8. A plurality of heat dissipation fins 12 are fixedly installed on the outer part of the heat dissipation fin seat 11 in an annular and equidistant distribution.

[0052] The heat-conducting cylinder 9, the heat-conducting rod 10, the heat-dissipating fin seat 11 and the heat-dissipating fin seat 11 are all made of copper.

[0053] The exhaust port of the heat-dissipating fan 15 is communicated with the air pipe 16, the other end of the air pipe 16 is communicated with the annular pipe 13 located in the annular cavity 8, the top of the annular pipe 13 is communicated with the air blowing heads 14 equal in number to the number of the heat-dissipating fins 12 and respectively located between two adjacent heat-dissipating fins 12, and the outer top of the purification cylinder 5 is provided with the exhaust holes communicated with the annular cavity 8.

[0054] The purification assembly in the embodiment is further provided with the filtering and residue discharging mechanism.

[0055] It should be noted that the filtering and residue discharging mechanism comprises the moving disc 19 movably embedded in the bottom of the purification cylinder 5 and equal in diameter to the inner diameter of the impurity precipitation cylinder 17, the support frame 23 fixedly installed on the bottom wall of the purification cylinder 5, the two left-right symmetrical perforations 20 provided on the moving disc 19, the filter screen 21 installed in the perforations 20, the electric push rod 24 fixedly installed on the top of the support frame 23, the mounting frame 25 slidably connected with the support frame 23 and fixedly installed on the push rod of the electric push rod 24, and the micro motor 26 fixedly installed on the bottom of the mounting frame 25.

[0056] The output shaft of the micro motor 26 is installed with the plugging member for plugging and sealing the perforations 20.

[0057] The plugging member comprises the cover plates 27 fixedly installed on both sides of the output shaft of the micro motor 26.

[0058] The cover plates 27 are located above the perforations 20, the bottom of the cover plates 27 is fixedly installed with the plurality of elastic telescopic rods 28, and the bottom of the elastic telescopic rods 28 is fixedly installed with the rubber plugging blocks 29 for plugging and sealing the perforations 20.

[0059] The elastic telescopic rods 28 are composed of the spring and the telescopic rods, the rubber plugging blocks 29 are concentric with the perforations 20, and the diameter of the rubber plugging blocks 29 is greater than that of the perforations 20.

[0060] The working principle of the above embodiment is as follows:

[0061] The gas is connected to the exhaust outlet of the carbonization tank for processing straw biochar through the air inlet connecting pipe 7, so that the water stored in the purification cylinder 5 enters the impurity precipitation cylinder 17 through the perforations 20 and mixes with the entering gas, and then the impurities in the gas are precipitated into the impurity precipitation cylinder 17 for storage. The filter screen 21 is arranged to prevent the precipitated impurities from being discharged through the perforations 20, so that when it is necessary to clean the filtered impurities stored in the impurity precipitation cylinder 17, the switch valve 18 is closed, the micro motor 26 is started to drive the cover plate 27 to rotate, and the elastic extension rod 28 is elastically extended to make the rubber blocking block 29 tightly fit with the moving disc 19 and seal the perforations 20.

[0062] After the sealing is completed, the cover 22 is opened, the electric push rod 24 is started to push the moving disc 19 downward, and the impurities stored in the impurity precipitation cylinder 17 are discharged, thereby improving the purification effect of the impurities in the gas and the treatment efficiency of the purified impurities, avoiding the phenomenon of combustible gas recovery blockage caused by untimely treatment.

[0063] In addition, in order to avoid the reaction of the high-temperature water in the purification cylinder 5 with the combustible gas, the heat in the water is introduced into the heat dissipation fins 12 on the heat dissipation fin seat 11 through the heat dissipation rod 10, and the heat dissipation fan 15 is started to work, so that the gas is blown out from the plurality of air blowing heads 14 to correspondingly heat the heat dissipation fins 12, and the hot air is discharged from the exhaust hole, thereby improving the heat dissipation efficiency.

[0064] After the impurities in the gas are treated, the water in the gas is filtered out through the waterproof and breathable membrane 6, and then the gas is discharged into the gas cooler 4 for cooling, and then the cooled gas is discharged into the gas scrubber 1 for washing, thereby ensuring the purity of the combustible gas and realizing the treatment of the gas.

[0065] The electrical elements in the text are electrically connected with the main control unit and the power supply. The main control unit can be a conventional known device such as a computer, and the existing disclosed power connection technology is not described in detail.

Claims

1. A combustible gas recycling mechanism for processing straw biochar, comprising a gas scrubber (1), an air inlet connecting pipe (3) and an air outlet connecting head (2). The top of the gas scrubber (1) is connected with the air outlet connecting head (2), the left bottom of the gas scrubber (1) is connected with the air inlet connecting pipe (3), the air outlet connecting head (2) is connected with an air pipe, the other end of the air pipe is connected with a gas jet head for providing combustible gas for the carbonization tank, characterized in that The air inlet connecting pipe (3) is connected with a purification assembly for purifying the gas generated by the carbonization of the carbonization tank; Water for filtering impurities in the gas is injected into the purification assembly; A cooling assembly is arranged on the purification assembly to cool the purified water; A filtering and residue discharging mechanism is also arranged on the purification assembly.

2. The mechanism for recycling combustible gas in processing straw biochar according to claim 1, characterized in that: The purification assembly comprises a gas cooler (4) connected to the other end of the air inlet connecting pipe (3), a purification cylinder (5) connected to the gas inlet of the gas cooler (4), and a waterproof and air-permeable film (6) arranged at the connection between the gas cooler (4) and the purification cylinder (5). The purification cylinder (5) is used for storing water for purifying impurities, the bottom of the purification cylinder (5) is connected with an impurity precipitation cylinder (17), an air inlet connecting pipeline (7) is connected between the left top of the impurity precipitation cylinder (17) and the air outlet of the carbonization tank, an on-off valve (18) is connected to the outside of the air inlet connecting pipeline (7), and a cover (22) is inserted into the opening at the bottom of the impurity precipitation cylinder (17).

3. The mechanism for recycling combustible gas produced in processing straw biochar according to claim 2, characterized in that: The cooling assembly comprises a heat dissipation fan (15) fixedly installed on the left side of the purification cylinder (5), an annular cavity (8) formed in the interior of the purification cylinder (5), and a heat conduction cylinder (9) fixedly installed on the inner wall of the purification cylinder (5), a plurality of heat conduction rods (10) penetrating through the purification cylinder (5) are fixedly installed on the outer wall of the heat conduction cylinder (9), a heat dissipation fin seat (11) located in the annular cavity (8) is fixedly installed between the other ends of the heat conduction rods (10), and a plurality of annular heat dissipation fins (12) are fixedly installed on the outer side of the heat dissipation fin seat (11) in an equidistant distribution. The air outlet of the heat dissipation fan (15) is connected with an air pipe (16), the other end of the air pipe (16) is connected with an annular pipe (13) located in the annular cavity (8), the top of the annular pipe (13) is connected with a plurality of air blowing heads (14) equal in number to the heat dissipation fins (12) and located between adjacent two heat dissipation fins (12), and an air outlet hole is formed in the top of the outer side of the purification cylinder (5) and connected with the annular cavity (8).

4. The mechanism for recycling combustible gas produced in processing straw biochar according to claim 3, characterized in that: The filter residue discharging mechanism comprises a moving disc (19) movably embedded in the bottom of the purification cylinder (5) and having a diameter equal to the inner diameter of the impurity precipitation cylinder (17), a support frame (23) fixedly installed on the bottom wall of the purification cylinder (5), and two left-right symmetrical perforations (20) provided on the moving disc (19), wherein a filter screen (21) is installed in each perforation (20), the top of the support frame (23) is fixedly installed with an electric push rod (24), the push rod of the electric push rod (24) is fixedly installed with a mounting frame (25) in sliding connection with the support frame (23), and the bottom of the mounting frame (25) is fixedly installed with a micro motor (26); The output shaft of the micro motor (26) is installed with a plugging member for plugging and sealing the perforations (20).

5. The mechanism for recycling combustible gas produced in processing straw biochar according to claim 4, characterized in that: The plugging member comprises cover plates (27) fixedly installed on both sides of the output shaft of the micro motor (26); The cover plates (27) are located above the perforations (20), the bottom of each cover plate (27) is fixedly installed with a plurality of elastic telescopic rods (28), and the bottoms of the elastic telescopic rods (28) are fixedly installed with rubber plugging blocks (29) for plugging and sealing the perforations (20).

6. The mechanism for recycling combustible gas produced in processing straw biochar according to claim 5, characterized in that: The elastic telescopic rod (28) is composed of a spring and telescopic rods fixedly sleeved at both ends of the spring, the rubber plugging block (29) is concentric with the perforations (20), and the diameter of the rubber plugging block (29) is greater than that of the perforations (20).

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