Cabinet type filtering device for biomass pyrolysis gas

Abstract

The utility model discloses a biomass thermal cracking gas cabinet type filtering device which is provided with a spherical cap, a filtering cabinet shell, a filtering tank body provided with a gas inlet pipe and a gas outlet pipe, a filtering cylinder and an angle iron frame ring, the filtering cylinder and the angle iron frame ring are located on the upper portion in the filtering tank body, and a filtering element supporting sleeve, a filtering element and a filtering net which are convenient to replace are arranged in the filtering cylinder. An angle iron frame ring is fixedly connected to the inner wall of the upper part of the filtering tank body, a barrel top flange is arranged at the top of the filtering barrel, an annular bottom ring is arranged at the lower part of the filtering barrel, the filtering net is positioned on the annular bottom ring, the filtering core is arranged in the filtering core supporting sleeve and is arranged on the filtering net, and the filtering barrel is hung on the angle iron frame ring through the barrel top flange. The device is reasonable in structure and convenient for continuous production, and has the characteristics of multiple filtration to thoroughly eliminate impurities, convenience in equipment cleaning and maintenance, and improvement of the purity and yield of thermal cracking gas.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass pyrolysis equipment, and in particular to a biomass pyrolysis gas cabinet-type filter device. Background Technology

[0002] Biomass pyrolysis is a thermal conversion technology that involves pressing plant stalks, wood chips, and other raw materials into briquettes and heating them in a closed, oxygen-deficient or inert gas environment to produce combustible gases, charcoal, and liquid bio-oil. Bio-oil can be used as fuel or as a chemical feedstock for refining chemicals, replacing fossil fuels. The combustible gas is used for reactor heating or power generation. Hydrogen-rich gas can be purified and utilized. Biochar can be used as a soil conditioner, adsorbent, or further processed into activated carbon for carbon sequestration or environmental protection materials. The high-temperature, medium-pressure process of biomass pyrolysis typically operates at temperatures between 300 and 600°C, with a reactor pressure between 2 and 30 kPa (depending on equipment control). The gas contains a large amount of combustible gases, plant tar, and various biomass acids (primarily acetic acid). The gas is then filtered and purified to remove tar and particulate matter. Existing technologies commonly use cyclone separators, electrostatic precipitators, or scrubbing towers for the filtration process. Filtration of biomass pyrolysis gas is a major challenge in the development and utilization of biomass energy. This is because biomass pyrolysis gas has high permeability and its pressure is similar to that of the pyrolysis reactor. Moisture, tar, and biomass vinegar easily flow with the gas, corroding the inner walls of the equipment and easily damaging ordinary valves, making filtration very difficult. This is the biggest problem for the industrial and civilian application of biomass pyrolysis combustible gas. Inventor Wen Hengyong obtained a utility model patent ten years ago, "A Biomass Pyrolysis Gas Filtration Device" (Patent No.: ZL201520183845.9), which filled a gap in this field. However, ten years of application have revealed several shortcomings of this technology: first, the single-stage filtration process results in insufficiently pure gas, with tar and wood vinegar easily entering the combustible gas storage equipment with the gas flow; second, the filter medium is easily damaged and saturated but difficult to replace; and third, the filtration flow rate is insufficient. Further improvements have been made to address these problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cabinet-type filter device for biomass pyrolysis gas, which has the characteristics of multiple filtration to thoroughly eliminate impurities, convenient equipment cleaning and maintenance, and improved purity and yield of pyrolysis gas.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a biomass pyrolysis gas cabinet-type filtration device, including a spherical cap, a filter cabinet shell, a filter tank with an inlet pipe and an outlet pipe, and a filter cylinder and an angle iron frame ring located in the upper part of the filter tank. The filter cylinder is provided with a filter element support sleeve, a filter element and a filter screen that are easy to replace. The angle iron frame ring is fixedly connected to the inner wall of the upper part of the filter tank. A cylinder top flange is provided at the top of the filter cylinder and an annular bottom ring is provided at the bottom. The filter screen is located on the annular bottom ring. The filter element is installed in the filter element support sleeve and placed on the filter screen. The filter cylinder is suspended on the angle iron frame ring through the cylinder top flange.

[0005] The above-mentioned biomass pyrolysis gas cabinet-type filtration device has an inlet pipe and an outlet pipe on the filter cabinet shell, and a cooling water tank is formed by a sealed connection between the filter cabinet shell and the filter tank body. The cooling water tank is equipped with a drain pipe.

[0006] In the aforementioned biomass pyrolysis gas cabinet-type filtration device, the water outlet pipe is located at the top left side of the filter cabinet shell, and the water inlet pipe is located at the upper right side of the filter cabinet shell; the air inlet pipe is located on the left side of the filter cabinet shell, with one end connected to the pyrolysis gas source pipeline and the other end passing through the cooling water tank and connecting to the inside of the filter tank; the air outlet pipe is located on the right side of the filter cabinet shell, with one end connected to the inside of the filter tank and the other end passing through the cooling water tank and connecting to the biomass pyrolysis gas storage tank; the installation height of the air outlet pipe is higher than the installation height of the air inlet pipe.

[0007] The above-mentioned biomass pyrolysis gas cabinet-type filtration device has multiple filter tanks inside the filter cabinet shell, which are connected in series from left to right. The gas outlet pipe on the left filter tank is connected to the gas inlet pipe on the right filter tank, and the gas outlet pipe on the right end filter tank is connected to the biomass pyrolysis gas storage tank.

[0008] The above-mentioned biomass pyrolysis gas cabinet-type filtration device has a cone-shaped chamber at the bottom of the filtration tank, and each cone-shaped chamber has a drain pipe with a valve installed at the bottom.

[0009] This utility model provides a biomass pyrolysis gas cabinet-type filtration device, which includes a spherical cap, a filter cabinet shell, a filter tank with an inlet pipe and an outlet pipe, a filter cylinder and an angle iron frame ring located in the upper part of the filter tank. The filter cylinder is equipped with a filter element support sleeve, a filter element and a filter screen for easy replacement. The angle iron frame ring is fixedly connected to the inner wall of the upper part of the filter tank. A top flange is provided at the top of the filter cylinder and an annular bottom ring is provided at the bottom. The filter screen is located on the annular bottom ring. The filter element is installed in the filter element support sleeve and placed on the filter screen. The filter cylinder is suspended on the angle iron frame ring through the top flange.

[0010] The beneficial technical effects of this utility model are as follows: First, the filter cylinder is suspended on the angle iron frame via the top flange, the filter screen is located on the annular bottom ring, and the filter element is installed in the filter element support sleeve and placed on the filter screen. This makes the operation, inspection, and maintenance of the device very convenient. The filter cylinder, filter element support sleeve, and filter screen can be removed by opening the spherical cap, making cleaning simple and quick. This not only improves the quality of biomass pyrolysis gas but also facilitates cleaning and maintenance. Second, multiple filter tanks are connected in series to implement multi-stage filtration, creating conditions for continuous production and increased output. Third, the sealed connection between the filter cabinet shell and the filter tank forms a cooling water tank, which cools the pyrolysis gas during the filtration process, allowing tar and wood vinegar to be smoothly discharged through the drain pipe and valve. This device has a reasonable structure, facilitates continuous production, and features multi-stage filtration to thoroughly eliminate impurities, convenient equipment cleaning and maintenance, and improved purity and output of pyrolysis gas. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 yes Figure 1 Top view;

[0013] Figure 3 yes Figure 1 AA view in the middle;

[0014] Figure 4 yes Figure 2 BB view in the middle;

[0015] Figure 5 yes Figure 2 The CC view in the middle.

[0016] The components in the diagram are labeled as follows: 1. Load-bearing foot; 2. Valve; 3. Filter cabinet shell; 4. Air outlet pipe; 5. Spherical cap; 6. Water outlet pipe; 7. Air inlet pipe; 8. Sewage pipe; 9. Water inlet pipe; 10. Cap flange; 11. Top flange; 12. Filter element support sleeve; 13. Filter element; 14. Conical chamber; 15. Filter tank; 16. Angle iron support inside the cooling water tank; 17. Angle iron frame ring; 18. Filter cylinder; 19. Annular bottom ring; 20. Gas filtration direction marking line; 21. Filter screen; 22. Cooling water; 23. Drain pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] like Figures 1-5 As shown, the biomass pyrolysis gas cabinet-type filtration device provided by this utility model has the following operating steps: First, check the overall sealing of the equipment. Second, fill the cooling water tank with cold water through the water inlet pipe 9. Third, seal the gas supply pipe of the pyrolysis reactor to the gas inlet pipe 7, open the gas supply pipe valve of the pyrolysis reactor, and the biomass pyrolysis gas pressure is between 2-30 kPa. It enters the filter tank 15 from the gas inlet pipe 7, moves downwards, and enters the filter cylinder 18 through the annular bottom ring 19. It moves upwards through the filter screen 21 and filter element 13, and then enters the next filter tank 15 through the gas outlet pipe 4. Through forced motion curve multiple filtration, it is finally discharged from the gas outlet pipe 4 of the end filter tank 15 into a dedicated biomass pyrolysis gas storage tank. Fourth, hot water is discharged from the water outlet pipe 6, cooled, and then injected back into the cooling water tank through the water inlet pipe 9 for recycling. The filter screen 21 can be made of stainless steel wire mesh, which can be repeatedly cleaned and reused. The filter element 13 can be made of automotive engine filter element. The impurities and dirt produced by filtration are discharged through the drain pipe 23 and valve 2.

[0019] Based on the disclosure and teachings of the above specification, those skilled in the art can make appropriate changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A biomass pyrolysis gas cabinet-type filtration device, comprising a spherical cap (5), a filter cabinet shell (3), and a filter tank (15) equipped with an inlet pipe (7) and an outlet pipe (4), characterized in that, It also includes a filter cylinder (18) and an angle iron frame (17) located in the upper part of the filter tank (15). The filter cylinder (18) is provided with a filter element support sleeve (12), a filter element (13) and a filter screen (21) that are easy to replace. The angle iron frame (17) is fixedly connected to the upper inner wall of the filter tank (15). A cylinder top flange (11) is provided at the top of the filter cylinder (18) and an annular bottom ring (19) is provided at the bottom. The filter screen (21) is located on the annular bottom ring (19). The filter element (13) is installed in the filter element support sleeve (12) and placed on the filter screen (21). The filter cylinder (18) is suspended on the angle iron frame (17) through the cylinder top flange (11).

2. The biomass pyrolysis gas cabinet-type filter device according to claim 1, characterized in that, The filter cabinet shell (3) is provided with an inlet pipe (9) and an outlet pipe (6). The filter cabinet shell (3) and the filter tank (15) are sealed together to form a cooling water tank. The cooling water tank is provided with a drain pipe (8).

3. The biomass pyrolysis gas cabinet-type filter device according to claim 2, characterized in that, The water outlet pipe (6) is located on the top left side of the filter cabinet shell (3), and the water inlet pipe (9) is located on the upper right side of the filter cabinet shell (3); the air inlet pipe (7) is located on the left side of the filter cabinet shell (3), one end of the air inlet pipe (7) is connected to the pyrolysis gas source pipeline, and the other end passes through the cooling water tank and is connected to the inside of the filter tank (15); the air outlet pipe (4) is located on the right side of the filter cabinet shell (3), one end of the air outlet pipe (4) is connected to the inside of the filter tank (15), and the other end passes through the cooling water tank and is connected to the biomass pyrolysis gas storage tank; the installation height of the air outlet pipe (4) is higher than the installation height of the air inlet pipe (7).

4. A biomass pyrolysis gas cabinet-type filter device according to claim 3, characterized in that, The filter cabinet shell (3) is equipped with multiple filter tanks (15) connected in series from left to right. The air outlet pipe (4) on the filter tank (15) on the left is connected to the air inlet pipe (7) on the filter tank (15) on the right. The air outlet pipe (4) on the filter tank (15) at the right end is connected to the biomass pyrolysis gas storage tank.

5. A biomass pyrolysis gas cabinet-type filter device according to claim 4, characterized in that, The filter tank (15) is provided with a conical chamber (14) at the bottom, and each conical chamber (14) is provided with a drain pipe (23) for installing a valve (2) at the bottom.

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