Biomass tar cracking device under hydrogen-rich atmosphere

Abstract

The utility model discloses a biomass tar cracking device under hydrogen-rich atmosphere, which relates to the technical field of biomass tar cracking, and comprises a reaction tank body, a mounting pipe is rotatably arranged in the middle of the upper end of the reaction tank body, a plurality of air inlets are arranged on the mounting pipe, and filter screen plates are fixedly arranged in the air inlets. A cleaning mechanism is arranged at the upper end in the reaction tank body, a rotary connecting pipe is rotationally arranged on the mounting pipe, and a material turning mechanism is arranged at the bottom end of the mounting pipe. According to the reaction tank disclosed by the utility model, the filter screen plates are arranged at the gas inlets in the mounting pipe, so that impurities in cracked gas can be conveniently filtered, and cracked materials at the bottom end in the reaction tank body can be conveniently turned over circularly by arranging the transmission pipe and the spiral plate.

Description

Technical Field

[0001] This utility model relates to the field of biomass tar pyrolysis technology, specifically a biomass tar pyrolysis device under a hydrogen-rich atmosphere. Background Technology

[0002] Pyrolysis gasification technology is a highly efficient and clean biomass utilization technology that converts biomass into solid (biochar), liquid (bio-oil), or gaseous (pyrolysis gas) substances. Both pyrolysis gas and bio-oil are fuels. In theory, tar catalytic cracking technology can convert tar into combustible gas, which not only improves energy utilization but also completely reduces secondary pollution.

[0003] In most existing biomass tar pyrolysis processes, biomass tar and solid acid catalysts are added to a reactor, and the reactor temperature is raised to 700℃ for high-temperature pyrolysis of the biomass tar. However, existing reactors do not facilitate the filtration of the gas generated during pyrolysis, causing floating matter generated during pyrolysis to enter the external collection components along with the gas. This necessitates separate gas treatment, increasing the number of steps in the production process and making it difficult to treat the pyrolyzed gas in a timely manner.

[0004] Based on this, a biomass tar pyrolysis device under a hydrogen-rich atmosphere is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a biomass tar pyrolysis device under a hydrogen-rich atmosphere, so as to solve the problem of inconvenience in filtering the pyrolysis gas in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A biomass tar pyrolysis device under a hydrogen-rich atmosphere includes a reaction tank, an insulated tank fixedly mounted on the outside of the reaction tank, a heater inside the insulated tank, a discharge hole at the bottom of the reaction tank with a slidable baffle inside the discharge hole, a feed pipe fixedly mounted in an mounting hole at the top of the reaction tank, an installation pipe rotatably mounted at the middle of the top of the reaction tank with several air inlets, each with a fixed filter screen, a cleaning mechanism for cleaning the filter screen at the upper inside of the reaction tank, a rotating connecting pipe rotatably mounted on the installation pipe, several exhaust ports on the installation pipe corresponding to the position of the rotating connecting pipe, an exhaust pipe connected to the rotating connecting pipe, and a turning mechanism at the bottom of the installation pipe for turning over the pyrolysis material inside the reaction tank.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0009] In one alternative embodiment: the cleaning mechanism includes a first scraper, which is fixedly installed inside the upper part of the reaction vessel. One end of the first scraper is arc-shaped and is closely attached to the outer side of the filter screen. A fixing pipe is fixedly installed at one end of the mounting pipe. A second bevel tooth is fixedly installed on the fixing pipe. A third bevel gear meshes with the second bevel tooth. The third bevel gear is fixedly installed on the output end of the motor. The motor is fixedly installed at the upper part of the reaction vessel.

[0010] In one alternative embodiment: the material turning mechanism includes a transfer pipe and a spiral plate. One end of the transfer pipe is provided with a plurality of connecting rods arranged in a circular array. The other end of each connecting rod is fixedly connected to the bottom end of the mounting pipe. The spiral plate is rotatably provided inside the transfer pipe. The spiral plate is fixedly mounted on the mounting shaft. One end of the mounting shaft extends to the outside of the reaction vessel. A first bevel gear is fixedly provided at one end of the mounting shaft. The first bevel gear meshes with a third bevel gear.

[0011] In one alternative: a second scraper is symmetrically provided on the outside of the transfer pipe, and the second scraper is in close contact with the inside of the reaction vessel.

[0012] In one alternative: the stop block is fixedly mounted on the output end of the electric push rod, and the electric push rod is fixedly mounted on the bottom end of the insulation tank.

[0013] In one alternative: an installation ring is fixedly provided on the installation pipe, and a plurality of guide fan blades are provided on the installation ring at equal intervals.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention features filter screens installed at several air inlets on the mounting pipe, facilitating the filtration of impurities in the pyrolysis gas. The mounting pipe also drives the filter screens to rotate, allowing the first scraper to clean the outer side of the filter screens. Several guide vanes on the mounting ring guide the gas into the mounting pipe. A transmission pipe and spiral plate facilitate the circulation and turning of the pyrolysis material at the bottom of the reaction tank, ensuring uniform heating and pyrolysis of the material, thus increasing the practicality of the biomass tar pyrolysis device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the reaction vessel of this utility model.

[0018] Figure 3 This is a schematic diagram of the installation of the spiral plate of this utility model.

[0019] Figure 4 This is a schematic diagram showing the connection between the installation pipe and the transmission pipe of this utility model.

[0020] Figure 5 This is a schematic diagram of the installation of the filter screen plate of this utility model.

[0021] Figure 6 This is a schematic diagram of the first scraper structure of this utility model.

[0022] Figure reference numerals: 11 Reaction vessel, 12 Heater, 13 Insulation tank, 14 Feed pipe, 15 Mounting pipe, 16 Guide fan blade, 17 Filter screen, 18 First scraper, 19 Rotary connecting pipe, 20 Exhaust pipe, 21 Transmission pipe, 22 Mounting shaft, 23 Spiral plate, 24 Second scraper, 25 Motor, 26 First bevel gear, 27 Second bevel gear, 28 Stop block, 29 Electric push rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] In one embodiment, such as Figures 1-6 As shown, a biomass tar pyrolysis device under a hydrogen-rich atmosphere includes a reaction tank 11. An insulation tank 13 is fixedly mounted on the outside of the reaction tank 11, and a heater 12 is installed inside the insulation tank 13. A discharge hole is provided at the bottom of the reaction tank 11, and a baffle 28 is slidably mounted inside the discharge hole. A feeding pipe 14 is fixedly mounted in a mounting hole at the upper end of the reaction tank 11. An installation pipe 15 is rotatably mounted at the middle of the upper end of the reaction tank 11, and several air inlets are provided on the installation pipe 15. A filter screen 17 is fixedly mounted inside each air inlet. The upper part of the inside of the reaction tank 11... A cleaning mechanism for cleaning the filter screen 17 is provided. A rotating connecting pipe 19 is rotatably provided on the mounting pipe 15. Several exhaust ports are provided on the mounting pipe 15 at positions corresponding to the rotating connecting pipe 19. An exhaust pipe 20 is connected to the rotating connecting pipe 19. A turning mechanism for turning over the pyrolysis material inside the reaction tank 11 is provided at the bottom end of the mounting pipe 15. The cleaning mechanism facilitates the cleaning of impurities attached to the outside of the filter screen 17, and the turning mechanism facilitates the turning over of the material at the bottom of the reaction tank 11, so that the pyrolysis material can be heated evenly.

[0025] The cleaning mechanism includes a first scraper 18, which is fixedly installed inside the upper part of the reaction tank 11. One end of the first scraper 18 is arc-shaped and closely attached to the outer side of the filter screen 17. A fixing pipe is fixedly installed at one end of the mounting pipe 15. A second bevel tooth 27 is fixedly installed on the fixing pipe. A third bevel gear meshes with the second bevel tooth 27. The third bevel gear is fixedly installed on the output end of the motor 25. The motor 25 is fixedly installed at the upper part of the reaction tank 11. In use, biomass tar, solid acid catalyst, and other materials are put into the reaction tank 11 through the feeding pipe 14. Then, the feeding pipe 14 is cleaned. The end is sealed and the heater 12 is started, so that the material at the bottom of the reaction tank 11 is thermally decomposed. The gas generated after decomposition enters the installation pipe 15 through the air inlet and is then discharged through the exhaust pipe 20. One end of the exhaust pipe 20 is connected to the external collection component to collect the generated gas. At the same time, the filter screen 17 can filter impurities in the gas. Simultaneously, the motor 25 is started. The output end of the motor 25 is used in conjunction with the second bevel gear 27 through the third bevel gear to drive the installation pipe 15 to rotate. Since the first scraper 18 is fixedly installed at the upper end of the inside of the reaction tank 11, it can clean the impurities attached to the outside of several filter screens 17.

[0026] The material turning mechanism includes a transmission pipe 21 and a spiral plate 23. One end of the transmission pipe 21 is provided with a circular array of several connecting rods, and the other end of each connecting rod is fixedly connected to the bottom end of the mounting pipe 15. The spiral plate 23 is rotatably mounted inside the transmission pipe 21. The spiral plate 23 is fixedly mounted on the mounting shaft 22. One end of the mounting shaft 22 extends to the outside of the reaction tank 11. A first bevel gear 26 is fixedly mounted on one end of the mounting shaft 22. The first bevel gear 26 meshes with a third bevel gear. In use, when the output end of the motor 25 rotates, the third bevel gear meshes with the first bevel gear 26, causing the mounting shaft 22 to rotate. The mounting shaft 22 drives the spiral plate 23 to rotate, and at the same time, the mounting pipe 15 drives the transmission pipe 21 to rotate. The transmission pipe 21 and the spiral plate 23 rotate in opposite directions, thereby transmitting the pyrolysis material at the bottom of the reaction tank 11 and allowing the pyrolysis material inside the reaction tank 11 to circulate.

[0027] The outer side of the transfer pipe 21 is symmetrically provided with a second scraper 24. The second scraper 24 is in close contact with the inside of the reaction tank 11. When in use, when the installation pipe 15 drives the transfer pipe 21 to rotate, the transfer pipe 21 drives the second scraper 24 to rotate. Since the second scraper 24 is in close contact with the inside of the reaction tank 11, the material attached to the inside of the reaction tank 11 is cleaned.

[0028] The baffle 28 is fixedly mounted on the output end of the electric push rod 29, which is fixedly mounted on the bottom end of the heat preservation tank 13. When it is necessary to discharge the pyrolyzed material, the electric push rod 29 is activated, and the output end of the electric push rod 29 drives the baffle 28 to move, so that the baffle 28 disengages from the discharge hole at the bottom end of the reaction tank 11, thereby discharging the material.

[0029] An installation ring is fixedly provided on the installation pipe 15. Several guide fan blades 16 are provided at equal intervals on the installation ring. When in use, when the installation pipe 15 rotates, the installation pipe 15 drives the installation ring to rotate, and the installation ring drives the several guide fan blades 16 to rotate, thereby accelerating the gas flow inside the reaction tank 11 and guiding the gas into the interior of the installation pipe 15.

[0030] The above embodiment discloses a biomass tar pyrolysis device under a hydrogen-rich atmosphere. Biomass tar, solid acid catalyst, and other materials are fed into the reaction tank 11 through a feed pipe 14. One end of the feed pipe 14 is then sealed, and the heater 12 is activated to thermally pyrolyze the material at the bottom of the reaction tank 11. An installation pipe 15 drives an installation ring to rotate, which in turn drives several guide fan blades 16 to rotate, accelerating the gas flow inside the reaction tank 11 and guiding the gas into the installation pipe 15. The gas is then discharged through an exhaust pipe 20, one end of which is connected to an external collection component for gas collection. Simultaneously, a filter screen 17 filters impurities from the gas. The filter is filtered, and the motor 25 is started at the same time. The output end of the motor 25 works with the second bevel gear 27 through the third bevel gear, which drives the mounting tube 15 to rotate. Since the first scraper 18 is fixedly installed at the upper end of the inside of the reaction tank 11, it cleans the impurities attached to the outside of several filter screens 17. When the output end of the motor 25 rotates, the third bevel gear meshes with the first bevel gear 26, which drives the mounting shaft 22 to rotate. The mounting shaft 22 drives the spiral plate 23 to rotate. At the same time, the mounting tube 15 drives the transmission tube 21 to rotate. The transmission tube 21 rotates in the opposite direction to the spiral plate 23, thereby transmitting the pyrolysis material at the bottom of the inside of the reaction tank 11, so that the pyrolysis material inside the reaction tank 11 circulates.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A biomass tar cracking device under hydrogen-rich atmosphere, comprising a reaction tank body (11), an outer side of the reaction tank body (11) is fixedly provided with an insulation tank (13), an inner side of the insulation tank (13) is provided with a heater (12), a bottom end of the reaction tank body (11) is provided with a discharge hole, a stop block (28) is slidably arranged in the discharge hole, a feeding pipe (14) is fixedly arranged in a mounting hole of an upper end of the reaction tank body (11), and a mounting pipe (15) is rotatably arranged in a middle part of the upper end of the reaction tank body (11), characterized in that, The installation pipe (15) is provided with a plurality of air inlets, the air inlets are fixedly provided with filter screens (17), the upper end of the reaction tank body (11) is provided with a cleaning mechanism for cleaning the filter screens (17), the installation pipe (15) is rotatably provided with a rotating connecting pipe (19), the installation pipe (15) is provided with a plurality of exhaust ports corresponding to the position of the rotating connecting pipe (19), the rotating connecting pipe (19) is communicated with an exhaust pipe (20), and the bottom end of the installation pipe (15) is provided with a turnover mechanism for overturning the cracked materials in the reaction tank body (11).

2. The biomass tar cracking device under hydrogen-rich atmosphere according to claim 1, characterized in that, The cleaning mechanism comprises a first scraping frame (18), the first scraping frame (18) is fixedly arranged at the upper end of the reaction tank body (11), one end of the first scraping frame (18) is arranged in an arc shape, one end of the first scraping frame (18) is arranged in close contact with the outer side of the filter screen (17), one end of the installation pipe (15) is fixedly provided with a fixed pipe, the fixed pipe is fixedly provided with a second bevel gear (27), the second bevel gear (27) is engaged with a third bevel gear, the third bevel gear is fixedly arranged on the output end of the motor (25), and the motor (25) is fixedly arranged on the upper end of the reaction tank body (11).

3. The apparatus for cracking biomass tar in a hydrogen-rich atmosphere according to claim 2, wherein The turnover mechanism comprises a transmission pipe (21) and a spiral plate (23), a plurality of connecting rods are arranged in a circular array at one end of the transmission pipe (21), the other ends of the connecting rods are fixedly connected with the bottom end of the installation pipe (15), the spiral plate (23) is rotatably arranged in the transmission pipe (21), the spiral plate (23) is fixedly arranged on a mounting shaft (22), one end of the mounting shaft (22) extends to the outside of the reaction tank body (11), the first bevel gear (26) is fixedly arranged at one end of the mounting shaft (22), and the first bevel gear (26) is engaged with the third bevel gear.

4. The biomass tar cracking device under hydrogen-rich atmosphere according to claim 3, characterized in that, The second scraping frame (24) is arranged in close contact with the inside of the reaction tank body (11).

5. The biomass tar cracking device under hydrogen-rich atmosphere according to claim 1, characterized in that, The stop block (28) is fixedly arranged on the output end of the electric push rod (29), and the electric push rod (29) is fixedly arranged at the bottom end of the heat preservation tank (13).

6. The biomass tar cracking device under hydrogen-rich atmosphere according to claim 1, characterized in that, The installation pipe (15) is fixedly provided with an installation ring, and a plurality of guide vanes (16) are arranged at equal intervals on the installation ring.

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