A capping device for a biomass pyrolysis reactor

Abstract

The utility model discloses a kind of capping equipment of biomass pyrolysis reactor, including two supporting bodies, work platform and multiple casters are provided, two supporting bodies are symmetrically hinged in the rear beam two ends of furnace body side, the caster is fixedly connected in supporting body bottom surface, each supporting body is connected with rear beam by rocker arm and pivot, two supporting bodies swing on work platform and do the surrounding action to reactor furnace flange, the sealing device that can fasten reactor cover flange and reactor flange is equipped on semicircular arc supporting plate.The equipment has the characteristics of less power consumption, high output pressure, good flange sealing for various heating furnace bodies, reducing labor intensity, improving product quality and quantity, purifying workshop air environment and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass pyrolysis equipment, and in particular to a sealing device for a biomass pyrolysis reactor. Background Technology

[0002] Biomass pyrolysis is a thermal conversion technology that involves placing briquettes of biomass feedstocks such as plant straw, wood scraps, corn cobs, and peanut shells into a reactor and heating them in a sealed, oxygen-deficient or inert gas environment to convert them into 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. In practical applications, a highly sealed, oxygen-free dry distillation reactor is used. The biomass feedstock briquettes are heated to 350-400°C in a feed basket. When the feedstock briquettes reach a temperature of 270°C, pyrolysis gas begins to be generated and discharged through an exhaust pipe. The gas then enters a condensation and filtration process, and finally, the combustible gas enters a storage container. The reactor inside the biomass pyrolysis furnace must be kept sealed to prevent air from entering. The operating temperature is generally between 300 and 600°C, and the gas pressure inside the reactor is between 2 and 30 kPa. It contains a large amount of combustible gas, vegetable tar, and various biomass acids.

[0003] The inventor of this technology, Wen Hengyong, has spent ten years researching the field of biomass pyrolysis, developing multiple biomass pyrolysis devices and applying for patents. Existing technologies have the following problems with the use of reactors: 1. Tightening the reactor lid with bolts and nuts is labor-intensive for operators, takes up a long time, and affects work efficiency; 2. Due to temperature changes, the sealing degree of the reactor lid changes, and as the temperature gradually increases, local seal failures frequently occur, requiring manual tightening of bolts and nuts multiple times with a wrench during equipment operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sealing device for a biomass pyrolysis reactor, which has the characteristics of reasonable structure, convenient operation, and good sealing of the reactor when the temperature changes.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sealing device for a biomass pyrolysis reactor, including a working platform fixed around the furnace body and lower than the reactor flange, and a rear beam fixed on the working platform; it also includes two support bodies, rocker arms, a rotating shaft, and multiple casters. Each support body is made by connecting multiple reinforcing bolts between double-layer semi-circular arc-shaped support plates. Each support body is connected to the rear beam through a rocker arm and a rotating shaft. The casters are fixedly connected to the bottom surface of the support body. The two support bodies are symmetrically hinged at both ends of the rear beam. The two support bodies swing on the working platform and enclose the reactor flange and the reactor cover flange. Each support body is equipped with a fastening device that can seal the reactor flange and the reactor cover flange.

[0006] The sealing device for a biomass pyrolysis reactor described above includes a fastening device consisting of multiple hydraulically driven fastening units evenly distributed on a support body. Each hydraulically driven fastening unit includes a clamp, a support rod, a hydraulic cylinder, a piston rod, a thrust fork, a torsion bar, an upper wedge pad, a lower wedge pad, and a thrust rod. One end of the clamp is hinged to a reinforcing bolt, and the other end has jaws. The support rod connects the clamp to a semi-circular arc-shaped support plate. One end of the hydraulic cylinder is connected to the semi-circular arc-shaped support plate, and the other end has a thrust fork at the head of the piston rod. The lower end of the torsion bar is provided with an upper wedge-shaped pad located inside the jaws. The upper end of the torsion bar is milled square and extends out from the through hole of the upper plate of the jaws. The lower wedge-shaped pad is fixedly connected to the top surface of the reactor cover flange. The thrust rod is connected between the thrust fork and the upper end of the torsion bar. A pin is provided between the upper end of the thrust rod and the upper end of the torsion bar. The jaws of the clamp hold the reactor cover flange and the reactor flange. The piston rod is driven by a hydraulic cylinder. The thrust fork drives the thrust rod to swing, causing the torsion bar to rotate. The torsion bar drives the upper wedge-shaped pad to engage and press the lower wedge-shaped pad tightly.

[0007] The sealing device for the above-mentioned biomass pyrolysis reactor includes a positioning post at the center of the upper wedge-shaped pad and a central hole adapted to the positioning post in the lower wedge-shaped pad. A first slope and a second slope are provided on both sides of the center line of the downward-facing surface of the upper wedge-shaped pad, with the first slope being higher at the front and lower at the back, and the second slope being higher at the back and lower at the front. A third slope and a fourth slope are provided on both sides of the center line of the upward-facing surface of the lower wedge-shaped pad, with the third slope being higher at the back and lower at the front, and the fourth slope being higher at the front and lower at the back.

[0008] The sealing device for the biomass pyrolysis reactor mentioned above also includes a hydraulic oil pump, which is installed in the middle of the rear beam and connected to the hydraulic cylinders on the two supports respectively through hydraulic oil pipes.

[0009] The aforementioned sealing device for a biomass pyrolysis reactor also includes bracket clips. The bracket clips have two parts respectively hinged to the ends of a semi-circular arc-shaped support plate. After the two supports surround the reactor flange and the reactor cover flange on the working platform, they are secured with the two bracket clips.

[0010] This utility model provides a sealing device for a biomass pyrolysis reactor, which includes a working platform fixed around the furnace body and lower than the reactor flange, and a rear beam fixed on the working platform; it also includes two support bodies, rocker arms, a rotating shaft, and multiple casters. Each support body is made by connecting multiple reinforcing bolts between double-layer semi-circular arc-shaped support plates. Each support body is connected to the rear beam through a rocker arm and a rotating shaft. The casters are fixedly connected to the bottom surface of the support body. The two support bodies are symmetrically hinged at both ends of the rear beam. The two support bodies swing on the working platform and surround the reactor flange and the reactor cover flange. Each support body is equipped with a fastening device for sealing the reactor flange and the reactor cover flange.

[0011] The beneficial technical effects of this utility model are: First, this utility model uses a hydraulically driven thrust rod to engage and press the upper wedge-shaped pad with the lower wedge-shaped pad, sealing the reactor cover flange and the reactor flange, increasing the sealing degree of the reactor, and improving the quality and production efficiency of biomass pyrolysis products.

[0012] Second, two support bodies surround the reactor flange on the working platform, and multiple hydraulically driven fastening units tighten the reactor flange, replacing manual tightening of bolts with wrenches. This prevents flammable gas from spilling from the reactor during operation, purifies the workshop air environment, reduces the labor intensity of workers, and achieves semi-automatic operation.

[0013] Third, the hydraulically driven fastening unit can continuously apply pressure to the reactor cover flange, ensuring that the reactor flange remains sealed throughout the production cycle.

[0014] Fourth, by appropriately perforating the heat dissipation arm in the caliper, the heat conduction cross-sectional area is reduced, thereby reducing the heat conduction from the reactor flange to various components, effectively protecting operators, and extending the service life of the biomass pyrolysis furnace.

[0015] This equipment consumes little power, has a high output pressure, and provides good flange sealing for various heating furnaces. It features reduced labor intensity, improved product quality and quantity, and increased production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 2 Enlarged view of part A in the image; Figure 4 yes Figure 3 BB view in the middle; Figure 5 This is a schematic diagram of the structure of the upper and lower wedge-shaped pads used together in a torsion bar; Figure 6 It is a structural schematic diagram of two supports swinging on the working platform to surround the reactor furnace flange and the reactor cover furnace flange.

[0017] The components in the diagram are labeled as follows: 1. Reactor insulation layer; 2. Semi-circular support plate; 3. Clamp; 4. Reactor flange; 5. Casters; 6. Reactor exhaust pipe; 7. Bracket buckle; 8. Reinforcing bolt; 9. Hydraulic cylinder; 10. Circulating fan; 11. Reactor cover; 12. Pyrolysis gas output pipe; 13. Rocker arm; 14. Hydraulic pump; 15. Rotary shaft; 16. Rear beam; 17. Working platform; 18. Furnace body; 19. Hydraulic oil pipe; 20. Thrust rod; 21. Support rod; 22. Connecting interface; 23. Piston rod; 24. Thrust fork; 25. Torsion bar; 26. Pin; 27. Upper wedge pad; 28. Lower wedge pad; 29. ​​Heat dissipation arm; 30. Reactor cover flange; 31. Positioning column; 32. First ramp; 33. Second ramp; 34. Center hole; 35. Third ramp; 36. Fourth ramp. Detailed Implementation

[0018] 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.

[0019] like Figures 1-6 As shown, the present invention provides a sealing device for a biomass pyrolysis reactor. On a workbench 17 surrounding the reactor, two rocker arms 13 are installed at both ends of a rear beam 16, driving two left and right supports to rotate. A hydraulic pump 14 is located in the middle of the rear beam 16. The rocker arms 13 and supports open and close on the workbench 17 via casters 5. The hydraulic pump 14 drives hydraulic cylinders 9, aligning the two supports with the reactor cover flange 4 and reactor flange 30. The hydraulic pump 14 pressurizes the cylinders, transmitting the pressure to each hydraulic cylinder 9 through hydraulic pipes 19. The thrust rod 20 causes the torsion rod 25 to rotate, driving the upper wedge pad 27 and lower wedge pad 28 to mesh and rotate, generating pressure on the reactor cover flange 4 and reactor flange 30 to seal them. Calculations show that when the output pressure of the hydraulic pump 14 is 5 tons, the meshing force of the upper wedge pad 27 and lower wedge pad 28 reaches approximately 30 tons.

[0020] The operating procedure is as follows: Accurately place the reactor lid 11 into position, push the rocker arm 13 to move the two supports into position, ensuring the interface 22 of the semi-circular support plate 2 is in place, fasten the bracket buckle 7, check that each clamp 3 is in place, and then start the hydraulic oil pump 14. Once the output pressure reaches the set value, the pressure is locked. If it falls below the lower limit of the set value, the hydraulic oil pump 14 automatically starts pressurizing. The upper wedge gasket 27 and lower wedge gasket 28 engage, and the hydraulic cylinder 9 drives the piston rod 23 and the thrust fork 24. The thrust rod 20 swings, causing the torsion rod 25 to drive the upper wedge gasket 27 in a circular motion. Because the lower wedge gasket 28 is fixed to the reactor lid flange 30, the slope generates a downward thrust, causing the reactor lid flange 30 to move downwards. Due to the concave-convex sealing method between the upper and lower flanges of the reactor and the support of the sealing material, a seal is achieved.

[0021] After the reactor completes one batch of carbonization and is ready for cooling, the hydraulic oil pump 14 is depressurized, the hydraulic cylinder 14 and the thrust rod 20 are reset, the two bracket buckles 7 are opened, the rocker arm 13 is opened, the two support bodies are opened, and the clamps 3 are removed to open the reactor cover 11, remove the biomass pyrolysis carbon block, and prepare to enter the next production process.

[0022] 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 sealing device for a biomass pyrolysis reactor, comprising a working platform (17) fixed around the periphery of the furnace body (18) and lower than the reactor flange (4), and a rear beam (16) fixed on the working platform (17); characterized in that, It also includes two support bodies, rocker arms (13), rotating shafts (15) and multiple casters (5). Each support body is made by connecting multiple reinforcing bolts (8) between double-layer semi-circular arc-shaped support plates (2). Each support body is connected to the rear beam (16) through rocker arms (13) and rotating shafts (15). The casters (5) are fixedly connected to the bottom surface of the support body. The two support bodies are symmetrically hinged at both ends of the rear beam (16). The two support bodies swing on the working platform (17) and surround the reactor flange (4) and reactor cover flange (30). Each support body is equipped with a fastening device that can seal the reactor flange (4) and reactor cover flange (30).

2. The sealing device for a biomass pyrolysis reactor according to claim 1, characterized in that, The fastening device consists of multiple hydraulically driven fastening units evenly distributed on the support body. Each hydraulically driven fastening unit includes a caliper (3), a support rod (21), a hydraulic cylinder (9), a piston rod (23), a thrust fork (24), a torsion bar (25), an upper wedge pad (27), a lower wedge pad (28), and a thrust rod (20). One end of the caliper (3) is hinged to the reinforcing bolt (8), and the other end is provided with jaws. The support rod (21) is connected between the caliper (3) and the semi-circular support plate (2). One end of the hydraulic cylinder (9) is connected to the semi-circular support plate (2), and the other end is provided with a thrust fork (24) at the head of the piston rod (23). The lower end of the torsion bar (25) is provided with an upper wedge pad (27). The upper end of the torsion bar (25) is milled square and extends out from the through hole of the upper plate of the jaw. The lower wedge pad (28) is fixedly connected to the top surface of the reactor cover flange (30). The thrust rod (20) is connected between the upper end of the thrust fork (24) and the torsion bar (25). A pin (26) is provided between the upper end of the thrust rod (20) and the upper end of the torsion bar (25). The jaws of the caliper (3) clamp the reactor cover flange (30) and the reactor flange (4). The piston rod (23) is driven by the hydraulic cylinder (9). The thrust fork (24) drives the thrust rod (20) to swing so that the torsion bar (25) rotates. The torsion bar (25) drives the upper wedge pad (27) to engage and press with the lower wedge pad (28).

3. The sealing device for a biomass pyrolysis reactor according to claim 2, characterized in that, The upper wedge-shaped pad (27) has a positioning post (31) at its center, and the lower wedge-shaped pad (28) has a center hole (34) that matches the positioning post (31). A first slope (32) and a second slope (33) are provided on both sides of the center line of the downward-facing surface of the upper wedge-shaped pad (27). The first slope (32) is higher in the front and lower in the back, and the second slope (33) is higher in the back and lower in the front. A third slope (35) and a fourth slope (36) are provided on both sides of the center line of the upward-facing surface of the lower wedge-shaped pad (28). The third slope (35) is higher in the back and lower in the front, and the fourth slope (36) is higher in the front and lower in the back.

4. The sealing device for a biomass pyrolysis reactor according to claim 3, characterized in that, It also includes a hydraulic oil pump (14), which is installed in the middle of the rear beam (16) and connected to the hydraulic cylinders (9) on the two supports respectively through hydraulic oil pipes (19).

5. The sealing device for a biomass pyrolysis reactor according to claim 4, characterized in that, It also includes bracket buckles (7), which have two hinges respectively at the ends of the semi-circular bracket (2). The two supports surround the reactor flange (4) and the reactor cover flange (30) on the working platform (17) and are then secured with the two bracket buckles (7).

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