Biomass coupling catalytic pyrolysis integrated reaction device
By designing a biomass coupled catalytic pyrolysis integrated reaction device in biomass pretreatment technology, using a rotating motor to drive the crushing nails and grinding rollers to crush and grind the biomass raw materials, and keeping the second screen plate unobstructed by brushing the plate, the problems of low deoxygenation efficiency of biomass raw materials and blocking the screen plate are solved, and efficient biomass treatment and product discharge are achieved.
Patent Information
- Application Number
- CN202421119225.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-05-22
AI Technical Summary
In the existing biomass pretreatment technology, the large block volume of the biomass raw material leads to low deoxygenation efficiency, and the substances generated after catalytic pyrolysis are prone to clog the sieve plate, resulting in difficulty in discharge.
A biomass coupled catalytic pyrolysis integrated reaction device is designed, and a rotating electric machine is used to drive the crushing nails and grind the biomass raw materials to reduce the volume, and keep the second screen plate unobstructed through the brush plate to ensure the smooth discharge of the product.
The baking and deoxygenation efficiency of biomass raw materials is improved, and the problem of large blocked biomass volume affecting the deoxygenation efficiency is avoided. At the same time, the product is not easy to clog the screen plate after catalytic pyrolysis, achieving efficient material discharge.
Smart Images
Figure CN222715296U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of biomass pretreatment, and in particular relates to a biomass coupled catalytic pyrolysis integrated reaction device. Background Art
[0002] Light aromatics (benzene, toluene and xylene, etc.) are extremely important basic chemical organic raw materials for industries such as plastics, dyes, synthetic resins and pharmaceuticals. Today, light aromatics are mainly derived from fossil fuel synthesis processes. With the rapid depletion of fossil fuels, it is crucial to develop green renewable biomass to produce light aromatics through catalytic fast pyrolysis technology. However, since biomass raw materials contain a large number of oxygen-containing groups, the oxygen content is high (25-45%), which will result in the main component of biomass catalytic pyrolysis products being oxygen-containing compounds.
[0003] At present, the deoxygenation of biomass raw materials generally adopts the baking pretreatment method. The baking deoxygenation pretreatment refers to the mild pre-pyrolysis process of removing some oxygen-containing functional groups from biomass raw materials under normal pressure, inert atmosphere and relatively low temperature conditions, which can effectively reduce the content of oxygen-containing compounds in the catalytic pyrolysis products. In the prior art, the material processing process of most reactors is to simply pass the biomass raw materials through crushing equipment and drying equipment in sequence, and then send the biomass raw materials to the catalytic zone of the catalytic pyrolysis furnace. However, most crushing equipment has poor crushing effect on biomass raw materials, and the volume of the crushed biomass raw materials is still large, resulting in low deoxygenation efficiency. In addition, the substances produced after catalytic pyrolysis are easy to cause blockage to the sieve plate at the discharge end of the equipment, resulting in the substances produced after catalytic pyrolysis being difficult to discharge.
[0004] Therefore, a biomass coupled catalytic pyrolysis integrated reaction device is needed to solve the problems in the prior art that the bulk biomass raw materials are large in size and affect the deoxygenation efficiency, and the substances produced after catalytic pyrolysis clog the sieve plate and are difficult to discharge. Utility Model Content
[0005] The purpose of the utility model is to provide a biomass coupled catalytic pyrolysis integrated reaction device to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biomass coupled catalytic pyrolysis integrated reaction device, comprising a reactor, a rotating motor is fixedly connected at the center of the top of the reactor, three supporting feet distributed in a circumference are fixedly connected at the bottom of the reactor, the output end of the rotating motor rotates and extends to the inside of the reactor and is coaxially fixedly connected with a rotating shaft, a first sieve plate is tightly sleeved in the middle of the outer surface of the rotating shaft, the outer surface of the first sieve plate is fixedly connected to the inner surface of the reactor, a second sieve plate is rotatably connected to the bottom end of the rotating shaft, the outer surface of the second sieve plate is fixedly connected to the inner surface of the reactor, a plurality of crushing nails evenly distributed are fixedly connected to the top of the outer surface of the rotating shaft, and a grinding mechanism is provided on the outer surface of the rotating shaft;
[0007] The grinding mechanism includes two symmetrically distributed L-shaped rods, which are fixedly connected to both sides of the outer surface of the rotating shaft. A rotating rod is fixedly connected to the outer wall of the vertical section of the L-shaped rod close to the rotating shaft. A grinding roller is rotatably connected to the outer surface of the rotating rod. The bottom of the outer surface of the grinding roller is in contact with the top of the first screen plate. The outer wall of the rotating rod away from the L-shaped rod is coaxially fixedly connected to a limiting plate.
[0008] It should be noted in the scheme that a feed pipe is fixedly connected to the top of the reaction furnace, a discharge pipe is fixedly connected to the center of the bottom end of the reaction furnace, and a carrier gas inlet is arranged at the top of the reaction furnace.
[0009] It is further worth explaining that two parallel heating walls are fixedly connected to the inner wall of the reactor, a temperature controller is arranged at the top of the reactor, the temperature controller electrically controls the heating wall, the temperature controller is electrically connected to a temperature detector, and the bottom end of the temperature detector is electrically connected to two parallel probes, the bottom ends of the two probes extend into the interior of the reactor, the bottom end of one of the probes is located above the first sieve plate, and the bottom end of the other probe passes through the first sieve plate and is located above the second sieve plate.
[0010] It should be further explained that a spiral blade is fixedly connected to the outer surface of the bottom of the rotating shaft, and brush plates are fixedly connected to both sides of the outer surface of the bottom of the rotating shaft, and the bristles on the bottom of the brush plate are in conflict with the top of the second screen plate.
[0011] As a preferred implementation, one of the heating walls is located above the first sieve plate, and the other heating wall is located between the first sieve plate and the second sieve plate.
[0012] As a preferred implementation, the crushing nails are located above the first screen plate, and the spiral blades are located between the first screen plate and the second screen plate and above the brush plate.
[0013] Compared with the prior art, the biomass coupled catalytic pyrolysis integrated reaction device provided by the utility model has at least the following beneficial effects:
[0014] (1) Through the action of the grinding mechanism, the rotating motor drives the crushing pins to crush the block-shaped biomass raw materials, and at the same time drives the grinding roller to rotate to grind the crushed biomass raw materials, further reducing the volume of the biomass raw materials, improving the baking and deoxidation efficiency of the biomass raw materials, and effectively avoiding the problem that the large volume of the block-shaped biomass raw materials affects the deoxidation efficiency.
[0015] (2) A brush plate is provided, and a rotating motor drives the brush plate to brush the top of the second sieve plate to keep the second sieve plate unobstructed. The inert gas blows the material that has completed the catalytic pyrolysis reaction through the second sieve plate and is discharged through the discharge pipe to obtain high-value light aromatic chemicals, effectively avoiding the problem of the material produced after catalytic pyrolysis clogging the sieve plate and being difficult to discharge. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the reactor of the utility model;
[0018] Figure 3 This is a schematic diagram of the grinding mechanism structure of the utility model;
[0019] Figure 4 It is a schematic diagram of the front view of the rotating shaft of the utility model.
[0020] In the figure: 1. Reactor; 2. Rotating motor; 3. Rotating shaft; 4. First sieve plate; 5. Second sieve plate; 6. Crushing nails; 7. Grinding mechanism; 71. L-shaped rod; 72. Rotating rod; 73. Grinding roller; 74. Limiting plate; 8. Feed pipe; 9. Discharge pipe; 10. Carrier gas inlet; 11. Heating wall; 12. Temperature controller; 13. Temperature detector; 14. Probe; 15. Spiral blade; 16. Brush plate; 17. Support foot. DETAILED DESCRIPTION
[0021] The present invention will be further described below in conjunction with the embodiments.
[0022] See also Figure 1-Figure 4The utility model provides a biomass coupled catalytic pyrolysis integrated reaction device, including a reactor 1, a rotating motor 2 is fixedly connected at the center of the top of the reactor 1, three supporting feet 17 distributed in a circumference are fixedly connected at the bottom of the reactor 1, the output end of the rotating motor 2 rotates and extends to the inside of the reactor 1 and is coaxially fixedly connected with a rotating shaft 3, a first sieve plate 4 is tightly sleeved in the middle of the outer surface of the rotating shaft 3, the outer surface of the first sieve plate 4 is fixedly connected to the inner surface of the reactor 1, a second sieve plate 5 is rotatably connected to the bottom end of the rotating shaft 3, the outer surface of the second sieve plate 5 is fixedly connected to the inner surface of the reactor 1, a plurality of crushing nails 6 evenly distributed are fixedly connected to the top of the outer surface of the rotating shaft 3, and a grinding mechanism 7 is arranged on the outer surface of the rotating shaft 3;
[0023] The grinding mechanism 7 includes two symmetrically distributed L-shaped rods 71, which are distributed and fixedly connected on both sides of the outer surface of the rotating shaft 3. A rotating rod 72 is fixedly connected to the outer wall of one side of the vertical section of the L-shaped rod 71 close to the rotating shaft 3. A grinding roller 73 is rotatably connected to the outer surface of the rotating rod 72. The bottom of the outer surface of the grinding roller 73 is in contact with the top of the first sieve plate 4. The outer wall of the rotating rod 72 away from the L-shaped rod 71 is coaxially fixedly connected to a limiting plate 74.
[0024] Further as Figure 1 and Figure 2 As shown, it is worth explaining in detail that a feed pipe 8 is fixedly connected to the top of the reaction furnace 1 , a discharge pipe 9 is fixedly connected to the center of the bottom end of the reaction furnace 1 , and a carrier gas inlet 10 is arranged at the top of the reaction furnace 1 .
[0025] Further as Figure 2 As shown, it is worth specifically explaining that two parallel heating walls 11 are fixedly connected to the inner wall of the reactor 1, and a temperature controller 12 is arranged at the top of the reactor 1. The temperature controller 12 electrically controls the heating wall 11, and the temperature controller 12 is electrically connected to a temperature detector 13. The bottom end of the temperature detector 13 is electrically connected to two parallel probes 14, and the bottom ends of the two probes 14 extend into the interior of the reactor 1, the bottom end of one of the probes 14 is located above the first sieve plate 4, and the bottom end of the other probe 14 passes through the first sieve plate 4 and is located above the second sieve plate 5.
[0026] Further as Figure 2 and Figure 4 As shown, it is worth specifically explaining that a spiral blade 15 is fixedly connected to the outer surface of the bottom of the rotating shaft 3, and brush plates 16 are fixedly connected to both sides of the outer surface of the bottom of the rotating shaft 3. The bristles on the bottom of the brush plate 16 are in conflict with the top of the second screen plate 5, and the bristles are made of high temperature resistant material.
[0027] Further as Figure 2 As shown, it is worth explaining in detail that one of the heating walls 11 is located above the first sieve plate 4 to form a baking and deoxidation area, and the other heating wall 11 is located between the first sieve plate 4 and the second sieve plate 5 to form a catalytic pyrolysis area.
[0028] Further as Figure 2 As shown, it is worth explaining in detail that the crushing nails 6 are located above the first sieve plate 4, which is convenient for crushing the biomass raw materials and improving the efficiency of baking and deoxygenation. The spiral blades 15 are located between the first sieve plate 4 and the second sieve plate 5 and above the brush plate 16, which is convenient for mixing and contacting the catalyst with the baked and deoxygenated biomass raw materials and improving the efficiency of catalytic pyrolysis.
[0029] In summary: when the device is in use, first turn on the temperature controller 12 to raise the temperature of the two heating walls 11 to the target temperature, and after the biomass raw material is put into the reactor 1 through the feed pipe 8, start the rotating motor 2 to drive the rotating shaft 3 to rotate, and the rotating shaft 3 drives the crushing nails 6 to crush the block biomass raw material. When the rotating shaft 3 rotates, the grinding roller 73 is rotated through the L-shaped rod 71, and the grinding roller 73 grinds the crushed biomass raw material to further reduce its volume, so that the biomass raw material undergoes sufficient baking and deoxygenation reaction in the reactor 1, thereby improving the baking and deoxygenation efficiency of the biomass raw material, and then the inert gas is introduced into the reactor 1 through the carrier gas inlet 10, and the inert gas blows the biomass powder that has completed the crushing and baking process, so that it passes through the first sieve plate 4 and falls to the bottom of the reactor 1, effectively avoiding the problem that the large volume of the block biomass raw material affects the deoxygenation efficiency.
[0030] In the process of the baked and deoxygenated biomass powder falling to the bottom of the reactor 1, it is cracked into small molecular compounds by the high temperature of the heating wall 11 located below, and the rotating motor 2 drives the spiral blade 15 to lift the catalyst placed in advance on the top of the second sieve plate 5, and at the same time drives the brush plate 16 to brush the top of the second sieve plate 5 to keep the second sieve plate 5 unobstructed. The catalyst is mixed and contacted with the small molecular compounds after the high-temperature cracking of the biomass raw material to produce a catalytic pyrolysis reaction. At this time, the inert gas introduced by the carrier gas inlet 10 blows the material that has completed the catalytic pyrolysis reaction through the second sieve plate 5, and after opening the solenoid valve on the discharge pipe 9, it is discharged through the discharge pipe 9 to obtain high-value light aromatic chemicals, which effectively avoids the problem of the material produced after catalytic pyrolysis clogging the sub-sieve plate and being difficult to discharge.
[0031] The rotating motor 2 and the heating wall 11 can be purchased on the market. The rotating motor 2 and the heating wall 11 are equipped with a power supply, which is a mature technology in this field and has been fully disclosed, so they are not repeated in the specification.
[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A biomass coupled catalytic pyrolysis integrated reaction device, comprising a reaction furnace (1), characterized in that: A rotating motor (2) is fixedly connected at the center of the top of the reaction furnace (1); three supporting legs (17) distributed in a circumference are fixedly connected to the bottom of the reaction furnace (1); the output end of the rotating motor (2) is rotatably extended to the inside of the reaction furnace (1) and is coaxially fixedly connected to a rotating shaft (3); a first sieve plate (4) is tightly sleeved on the middle of the outer surface of the rotating shaft (3); the outer surface of the first sieve plate (4) is fixedly connected to the inner surface of the reaction furnace (1); a second sieve plate (5) is rotatably connected to the bottom of the rotating shaft (3); the outer surface of the second sieve plate (5) is fixedly connected to the inner surface of the reaction furnace (1); a plurality of evenly distributed crushing nails (6) are fixedly connected to the top of the outer surface of the rotating shaft (3); and a grinding mechanism (7) is provided on the outer surface of the rotating shaft (3); The grinding mechanism (7) comprises two symmetrically distributed L-shaped rods (71), the two L-shaped rods (71) being distributed and fixedly connected to the outer surface of the rotating shaft (3) on both sides, a rotating rod (72) being fixedly connected to the outer wall of the vertical section of the L-shaped rod (71) on one side close to the rotating shaft (3), a grinding roller (73) being rotatably connected to the outer surface of the rotating rod (72), the bottom of the outer surface of the grinding roller (73) being in contact with the top of the first sieve plate (4), and a limiting plate (74) being coaxially fixedly connected to the outer wall of the rotating rod (72) on the side away from the L-shaped rod (71).
2. The biomass coupled catalytic pyrolysis integrated reaction device according to claim 1, characterized in that: The top of the reaction furnace (1) is fixedly connected to a feed pipe (8), the center of the bottom end of the reaction furnace (1) is fixedly connected to a discharge pipe (9), and the top of the reaction furnace (1) is provided with a carrier gas inlet (10).
3. The biomass coupled catalytic pyrolysis integrated reaction device according to claim 2, characterized in that: The inner wall of the reaction furnace (1) is fixedly connected to two parallel heating walls (11); a temperature controller (12) is arranged at the top of the reaction furnace (1); the temperature controller (12) electrically controls the heating wall (11); the temperature controller (12) is electrically connected to a temperature detector (13); the bottom end of the temperature detector (13) is electrically connected to two parallel probes (14); the bottom ends of the two probes (14) extend into the interior of the reaction furnace (1); the bottom end of one of the probes (14) is located above the first sieve plate (4); the bottom end of the other probe (14) passes through the first sieve plate (4) and is located above the second sieve plate (5).
4. The biomass coupled catalytic pyrolysis integrated reaction device according to claim 3, characterized in that: The outer surface of the bottom of the rotating shaft (3) is fixedly connected with a spiral blade (15), and both sides of the outer surface of the bottom of the rotating shaft (3) are fixedly connected with a brush plate (16), and the bristles on the bottom surface of the brush plate (16) are in contact with the top of the second screen plate (5).
5. The biomass coupled catalytic pyrolysis integrated reaction device according to claim 4, characterized in that: One of the heating walls (11) is located above the first sieve plate (4), and the other heating wall (11) is located between the first sieve plate (4) and the second sieve plate (5).
6. The biomass coupled catalytic pyrolysis integrated reaction device according to claim 4, characterized in that: The crushing nails (6) are located above the first screen plate (4), and the spiral blades (15) are located between the first screen plate (4) and the second screen plate (5) and above the brush plate (16).