Biomass tar removal device

Abstract

The invention discloses a biomass tar removal device which comprises a cooling box, a gas inlet pipe is fixedly installed on one side of the cooling box, a cooling pipeline assembly is arranged in the cooling box, a first connecting hole is formed in one side of the upper end face of the cooling box, and a removal box is fixedly installed above the cooling box. A second connecting hole is formed in the lower end face of the removal box, the second connecting hole corresponds to the first connecting hole in position, a demister is fixedly installed on the lower portion of one side in the removal box, an adsorption box is fixedly installed on the upper portion of one side in the removal box, and activated carbon particles are arranged in the adsorption box. And an exhaust pipe is fixedly mounted above the removal box. According to the pyrolysis gas tar removal device, the multi-mode removal capacity is achieved, practicability is improved, and therefore the problem that in the tar removal process, tar in pyrolysis gas cannot be stably removed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of removal devices, and particularly to a biomass tar removal device. Background Art

[0002] The biomass gasifier is one of the key devices for realizing the harmless treatment of garbage, and tar separation and removal is an essential process in the purification of biomass gas. Tar is an inevitable by-product in the thermochemical conversion process of biomass, containing various organic compounds such as benzene, toluene, naphthalene, etc. These substances will not only reduce the quality of the gasified gas, but may also cause corrosion and blockage to subsequent equipment. Therefore, tar removal treatment is required.

[0003] For example, the authorized patent with the publication number CN106753591B (a tar separation device): includes a bracket, a pyrolysis gas inlet pipe, a tar collection unit, a pyrolysis gas outlet pipe, and a circulating water supply system. The tar collection unit is fixed on the bracket, and the number of the tar collection units is at least two arranged in sequence from left to right; the pyrolysis gas inlet pipe is connected to the leftmost tar collection unit, and the pyrolysis gas outlet pipe is connected to the rightmost tar collection unit; adjacent tar collection units are connected by a separation pipe; a spraying system is provided on the upper part of the separation pipe, and the spraying system is connected to the circulating water supply system.

[0004] Although the above-mentioned prior art has fast heat dissipation, good cooling effect, and simple structure, it only realizes tar separation by cooling the pyrolysis gas, and thus cannot stably remove the tar in the pyrolysis gas during the tar removal process, with poor practicability. Therefore, there is an urgent need in the market to develop a biomass tar removal device to help people solve existing problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a biomass tar removal device to solve the problem of poor practicability that the tar in the pyrolysis gas cannot be stably removed during the tar removal process as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A biomass tar removal device includes a cooling box, an air inlet pipe is fixedly installed on one side of the cooling box, a cooling pipeline assembly is arranged inside the cooling box, a connection hole one is arranged on one side of the upper end surface of the cooling box, a removal box is fixedly installed above the cooling box, a connection hole two is arranged on the lower end surface of the removal box, and the connection hole two corresponds to the position of the connection hole one. A demister is fixedly installed below one side inside the removal box, an adsorption box is fixedly installed above one side inside the removal box, activated carbon particles are arranged inside the adsorption box, and an exhaust pipe is fixedly installed above the removal box.

[0007] Preferably, pads are symmetrically arranged on both sides below the adsorption box, the pads are fixedly connected to the removal box, a box cover is fixedly installed at the front end of the removal box through screws, the box cover corresponds to the adsorption box in position, a gas distributor is arranged below the adsorption box, and the gas distributor is fixedly connected to the removal box.

[0008] Preferably, a collection tank is arranged below the interior of the removal box, the collection tank is below the demister, an electric valve II is fixedly installed below one side of the removal box, the electric valve II is communicated with the collection tank, and an output pipe II is fixedly installed on one side of the electric valve II.

[0009] Preferably, the cooling pipeline assembly includes a horizontal pipe and a U-shaped pipe, and a plurality of both the horizontal pipe and the U-shaped pipe are provided. The U-shaped pipe is fixedly installed below the horizontal pipe. A cooling water pipe is arranged inside the cooling box, the cooling water pipe penetrates through the horizontal pipe, and both ends of the cooling water pipe extend to the outside of the cooling box.

[0010] Preferably, a temperature guiding ring plate is arranged along the outer side of the cooling water pipe inside the horizontal pipe, the temperature guiding ring plate is fixedly connected to the cooling water pipe, a plurality of through holes are arranged inside the temperature guiding ring plate, and a mounting plate is fixedly installed above the horizontal pipe, and the upper end of the mounting plate is fixedly connected to the cooling box.

[0011] Preferably, a falling pipe is fixedly installed below the U-shaped pipe, a collection box is fixedly installed below the interior of the cooling box, and the lower end of the falling pipe is fixedly connected to the collection box.

[0012] Preferably, an electric valve I is fixedly installed below one side of the cooling box, the electric valve I is communicated with the collection box, and an output pipe is fixedly installed on one side of the electric valve I.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] (1) Through the arranged cooling box and removal box, the pyrolysis gas is cooled and separated by the cooling pipeline assembly in the cooling box. Subsequently, in the removal box, the pyrolysis gas first passes through the demister to further remove tar particles, and then passes through the adsorption box filled with activated carbon particles for adsorption and removal. This multi-stage treatment design not only improves the stability of tar removal, can more stably remove tar in the pyrolysis gas, but also enhances the practicability of the device, ensures the reliability of the entire biomass tar removal process, and increases the practicability.

[0015] (2) Since the cooling pipeline assembly includes a horizontal pipe and a U-shaped pipe, the contact area between the pyrolysis gas and the cooling water pipe is increased, the heat exchange efficiency is improved, the pyrolysis gas can be cooled more quickly, and thus the tar can be more effectively condensed and separated, increasing the practicability.

[0016] (3) By providing a heat-conducting ring plate made of die-cast aluminum alloy, the present invention can quickly transfer the cold quantity of the cooling water pipe to the pyrolysis gas in the horizontal pipe, improving the heat exchange efficiency. Moreover, the arrangement of the through holes inside the heat-conducting ring plate enables the pyrolysis gas to pass through more smoothly, reducing the flow resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a biomass tar removal device of the present invention;

[0018] Figure 2 is a cross-sectional view of the cooling box of the present invention;

[0019] Figure 3 is a cross-sectional view of the horizontal pipe of the present invention;

[0020] Figure 4 is a cross-sectional view of the adsorption box of the present invention.

[0021] In the figure: 1, cooling box; 101, connection hole 1; 2, removal box; 201, connection hole 2; 202, collection tank; 3, intake pipe; 4, exhaust pipe; 5, cooling water pipe; 6, box cover; 7, cooling pipe assembly; 701, horizontal pipe; 702, U-shaped pipe; 8, mounting plate; 9, downcomer; 10, collection box; 11, electric valve 1; 12, output pipe; 13, heat-conducting ring plate; 14, demister; 15, gas distributor; 16, adsorption box; 17, backing plate; 18, electric valve 2; 19, output pipe 2. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Please refer to Figures 1-4 , an embodiment provided by the present invention: a biomass tar removal device, including a cooling box 1, an intake pipe 3 is fixedly installed on one side of the cooling box 1, a cooling pipe assembly 7 is arranged inside the cooling box 1, a connection hole 101 is arranged on one side of the upper end surface of the cooling box 1, a removal box 2 is fixedly installed above the cooling box 1, a connection hole 201 is arranged on the lower end surface of the removal box 2, the connection hole 201 and the connection hole 101 are in corresponding positions, a demister 14 is fixedly installed below one side inside the removal box 2, an adsorption box 16 is fixedly installed above one side inside the removal box 2, activated carbon particles are arranged inside the adsorption box 16, and an exhaust pipe 4 is fixedly installed above the removal box 2.

[0024] After the pyrolysis gas is input through the intake pipe 3, it is preliminarily cooled by the cooling pipe assembly 7 to condense and separate part of the tar. Subsequently, the pyrolysis gas enters the removal tank 2. Inside the removal tank 2, it first passes through the demister 14 to further remove tar particles, and then passes through the adsorption tank 16 filled with activated carbon particles. The strong adsorption capacity of the activated carbon is used to remove the remaining tar. This not only improves the stability of tar removal, can more stably remove tar in the pyrolysis gas, but also increases the practicability.

[0025] Please refer to Figure 1 and Figure 4 , on both sides below the adsorption tank 16, there are symmetrically arranged backing plates 17 respectively. The backing plates 17 are fixedly connected to the removal tank 2. The front end of the removal tank 2 is fixedly installed with a tank cover 6 through screws. The tank cover 6 corresponds to the position of the adsorption tank 16. Below the adsorption tank 16, there is a gas distributor 15. The gas distributor 15 is fixedly connected to the removal tank 2.

[0026] The setting of the tank cover 6 facilitates the maintenance of the adsorption tank 16 and the replacement of activated carbon particles, improving the maintenance efficiency of the device. The setting of the gas distributor 15 can make the gas entering the adsorption tank 16 more evenly distributed, increasing the contact area between the activated carbon particles and the pyrolysis gas, thereby enhancing the adsorption effect and further improving the efficiency and quality of tar removal.

[0027] Please refer to Figure 4 , below the interior of the removal tank 2, there is a collection tank 202. The collection tank 202 is located below the demister 14. On the lower side of one side of the removal tank 2, there is a second electric valve 18 fixedly installed. The second electric valve 18 is communicated with the collection tank 202. On one side of the second electric valve 18, there is an output pipe 19 fixedly installed.

[0028] The setting of the collection tank 202 can collect the tar particles and condensate removed by the demister 14, preventing these substances from accumulating inside the removal tank 2, keeping the interior of the removal tank 2 clean, and being conducive to the long-term stable operation of the device. The setting of the second electric valve 18 and the output pipe 19 facilitates the discharge and treatment of the substances in the collection tank 202, improving the automation degree and operation convenience of the device.

[0029] Please refer to Figure 2 , the cooling pipe assembly 7 includes a horizontal pipe 701 and a U-shaped pipe 702, and both the horizontal pipe 701 and the U-shaped pipe 702 are provided with multiple. The U-shaped pipe 702 is fixedly installed below the horizontal pipe 701. Inside the cooling box 1, there is a cooling water pipe 5. The cooling water pipe 5 passes through the horizontal pipe 701, and both ends of the cooling water pipe 5 extend to the outside of the cooling box 1. The cooling water pipe 5 is externally connected to a circulating water device.

[0030] The arrangement of multiple horizontal tubes 701 and U-shaped tubes 702 increases the contact area between the pyrolysis gas and the cooling water pipes, improves the heat exchange efficiency, enables the pyrolysis gas to cool down more rapidly, and thus enables the tar to condense and separate more effectively. The external circulating water equipment can continuously supply cooling water to the cooling water pipes 5, ensuring the stability of the cooling effect.

[0031] Please refer to Figure 2 and Figure 3 , along the outer side of the cooling water pipe 5, a temperature conduction ring plate 13 is arranged inside the horizontal tube 701. The temperature conduction ring plate 13 is fixedly connected to the cooling water pipe 5. A number of through holes are arranged inside the temperature conduction ring plate 13. The temperature conduction ring plate 13 is made of die-cast aluminum alloy, and there is a gap between the temperature conduction ring plate 13 and the horizontal tube 701. An installation plate 8 is fixedly installed above the horizontal tube 701, and the upper end of the installation plate 8 is fixedly connected to the cooling box 1.

[0032] The temperature conduction ring plate 13 is made of die-cast aluminum alloy and has good heat conduction performance, which can quickly transfer the cold quantity of the cooling water pipe 5 to the pyrolysis gas inside the horizontal tube 701, improving the heat exchange efficiency. The design of the through holes enables the pyrolysis gas to pass through more smoothly, reducing the flow resistance. The setting of the installation plate 8 facilitates the installation and fixation of the horizontal tube 701, improving the stability.

[0033] Please refer to Figure 2 , a falling tube 9 is fixedly installed below the U-shaped tube 702. A collection box 10 is fixedly installed below the cooling box 1, and the lower end of the falling tube 9 is fixedly connected to the collection box 10.

[0034] The falling tube 9 can smoothly guide the tar and condensate condensed in the U-shaped tube 702 to the collection box 10. The setting of the collection box 10 facilitates the collection and treatment of the condensed tar and condensate.

[0035] Please refer to Figure 2 , an electric valve 11 is fixedly installed below one side of the cooling box 1. The electric valve 11 is communicated with the collection box 10, and an output pipe 12 is fixedly installed on one side of the electric valve 11.

[0036] The electric valve 11 can conveniently control the discharge of the substances in the collection box 10, improving the automation degree of the device. The setting of the output pipe 12 enables the tar and condensate in the collection box 10 to be smoothly discharged from the device, facilitating subsequent treatment and utilization.

[0037] Working principle: During use, the pyrolysis gas is input into the cooling pipe assembly 7 through the intake pipe 3. The multiple horizontal pipes 701 and U-shaped pipes 702 increase the contact area between the pyrolysis gas and the cooling water pipes, enabling the pyrolysis gas to rapidly cool down. Part of the tar condenses and separates. The condensed tar and condensate enter the collection box 10 below the cooling box 1 through the downpipe 9 below the U-shaped pipe 702. The pyrolysis gas after preliminary cooling enters the removal box 2 through the connection hole 101 and the connection hole 201. First, the tar particles are removed by the action of the demister 14. Subsequently, the pyrolysis gas enters the adsorption box 16 fixedly installed above and filled with activated carbon particles, and the remaining tar is removed by utilizing the strong adsorption capacity of the activated carbon. Then, the purified pyrolysis gas is output through the exhaust pipe 4, achieving the stable removal of biomass tar.

[0038] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any perspective, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A biomass tar removal device, comprising a cooling box (1), characterized in that: One side of the cooling box (1) is fixedly installed with an intake pipe (3). A cooling pipe assembly (7) is arranged inside the cooling box (1). One side on the upper end surface of the cooling box (1) is provided with a first connection hole (101). A removal box (2) is fixedly installed above the cooling box (1). A second connection hole (201) is arranged on the lower end surface of the removal box (2). The second connection hole (201) corresponds to the position of the first connection hole (101). A demister (14) is fixedly installed below one side inside the removal box (2). An adsorption box (16) is fixedly installed above one side inside the removal box (2). Activated carbon particles are arranged inside the adsorption box (16). An exhaust pipe (4) is fixedly installed above the removal box (2).

2. The biomass tar removal device according to claim 1, characterized in that: On both sides below the adsorption box (16), pads (17) are symmetrically arranged respectively. The pads (17) are fixedly connected with the removal box (2). The front end of the removal box (2) is fixedly installed with a box cover (6) by screws. The box cover (6) corresponds to the position of the adsorption box (16). A gas distributor (15) is arranged below the adsorption box (16). The gas distributor (15) is fixedly connected with the removal box (2).

3. The biomass tar removal device according to claim 1, characterized in that: A collection tank (202) is arranged below the inside of the removal box (2). The collection tank (202) is located below the demister (14). An electric valve two (18) is fixedly installed below one side of the removal box (2). The electric valve two (18) is communicated with the collection tank (202). An output pipe two (19) is fixedly installed on one side of the electric valve two (18).

4. A biomass tar removal device according to claim 1, characterized in that: The cooling pipe assembly (7) includes a horizontal pipe (701) and a U-shaped pipe (702), and both the horizontal pipe (701) and the U-shaped pipe (702) are provided with a plurality of them. The U-shaped pipe (702) is fixedly installed below the horizontal pipe (701). A cooling water pipe (5) is arranged inside the cooling box (1). The cooling water pipe (5) penetrates through the horizontal pipe (701), and both ends of the cooling water pipe (5) extend to the outside of the cooling box (1).

5. The biomass tar removal device according to claim 4, wherein: A temperature guiding ring plate (13) is arranged along the outer side of the cooling water pipe (5) inside the horizontal pipe (701). The temperature guiding ring plate (13) is fixedly connected with the cooling water pipe (5). A number of through holes are arranged inside the temperature guiding ring plate (13). An installation plate (8) is fixedly installed above the horizontal pipe (701). The upper end of the installation plate (8) is fixedly connected with the cooling box (1).

6. The biomass tar removal device according to claim 5, wherein: A falling pipe (9) is fixedly installed below the U-shaped pipe (702). A collection box (10) is fixedly installed below the inside of the cooling box (1). The lower end of the falling pipe (9) is fixedly connected with the collection box (10).

7. The biomass tar removal device according to claim 6, characterized in that: An electric valve one (11) is fixedly installed below one side of the cooling box (1). The electric valve one (11) is communicated with the collection box (10). An output pipe (12) is fixedly installed on one side of the electric valve one (11).

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