Biomass dry distillation pyrolysis device

Abstract

The application discloses a biomass dry distillation pyrolysis device and belongs to the field of biomass pyrolysis, comprising a combustion box, a cylinder for dry distillation pyrolysis is arranged at the top end of the combustion box, a gas tank and an oil tank are respectively communicated and installed at the top end and the bottom end of the cylinder, a cooling mechanism is arranged between the gas tank and the oil tank and the cylinder, the cooling mechanism comprises a water tank plate installed outside the cylinder, the water tank plate is communicated and installed with input pipelines of the gas tank and the oil tank, and the water tank plate is communicated and installed with a water inlet pipe and a water outlet pipe through an external water pump, two rotating wheels are rotatably installed in the water tank plate, the cooling area is increased, the contact between the cooling water and the rotating wheels and the water tank plate is more sufficient and dynamic, the heat generated in the cylinder during dry distillation pyrolysis can be quickly taken away, meanwhile, a plurality of stirring pieces are rotatably installed in the rotating wheels, the gas passing through the rotating wheels can be mixed and stirred under the drive of a third motor, the heat exchange effect of the gas and the cooling medium is further enhanced, and the cooling is more uniform and complete.

Description

Technical Field

[0001] This invention relates to the field of biomass pyrolysis, and particularly to a biomass dry distillation pyrolysis apparatus. Background Technology

[0002] Biomass, as a renewable and clean energy source, plays a vital role in alleviating the energy crisis and reducing environmental pollution through its efficient utilization. Biomass dry distillation pyrolysis technology is one of the key technologies for biomass energy conversion and utilization. This technology involves heating biomass at high temperatures in an oxygen-free or low-oxygen environment, causing it to undergo a thermal decomposition reaction to produce various products such as biochar, bio-oil, and combustible gases. These products have broad application prospects in the energy, chemical, and other fields.

[0003] During the pyrolysis of biomass, a large amount of high-temperature gaseous and liquid products are generated, which need to be cooled in a timely manner. However, the existing cooling mechanism design of pyrolysis equipment is often not reasonable enough, with limited cooling area, resulting in low cooling efficiency. It is impossible to quickly and effectively reduce the product temperature to a suitable range, which affects the product quality and subsequent processing. At the same time, the heat exchange between the cooling medium and the hot products is insufficient, which further reduces the cooling effect. Summary of the Invention

[0004] The purpose of this invention is to provide a biomass dry distillation pyrolysis apparatus to solve the problems mentioned in the background art, such as limited cooling area leading to low cooling efficiency, inability to quickly and effectively reduce the product temperature to a suitable range, and impact on product quality and subsequent processing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a biomass dry distillation pyrolysis device, comprising a combustion chamber, a cylinder for dry distillation pyrolysis is provided at the top of the combustion chamber, a gas box and an oil tank are respectively connected and installed at the top and bottom of the cylinder, a cooling mechanism is provided at the input end of the gas box and the oil tank, the cooling mechanism includes a water tank plate installed on the outside of the cylinder, the water tank plate is connected and installed in connection with the input pipes of the gas box and the oil tank, the water tank plate is connected and installed with an inlet pipe and an outlet pipe through an external water pump, two rotating wheels for increasing the cooling area are rotatably installed inside the water tank plate, the interior of the two rotating wheels is respectively connected to the gas box and the oil tank, the two rotating wheels are connected by belt drive, and multiple arc-shaped pressure plates for driving the rotating wheels to rotate are fixedly installed on the outer surface of the rotating wheels near the water inlet nozzle of the water inlet pipe.

[0006] As a preferred embodiment of the present invention, the inside of the rotating wheel is equipped with a plurality of stirring blades for mixing gases, and a third motor is fixedly installed on the outside of the gas box, the output shaft of the third motor being fixedly connected to the stirring blades.

[0007] As a preferred embodiment of the present invention, the air inlet end of the air box is provided with a membrane plate for air permeability and water stoppage, and the interior of the membrane plate is made of thermoplastic polyester elastomer breathable membrane.

[0008] As a preferred embodiment of the present invention, a feeding mechanism is provided at the top of the cylinder. The feeding mechanism includes a feeding pipe connected to and installed at the top of the cylinder. A feeding funnel is connected to the surface of the feeding pipe. A piston is provided inside the feeding pipe. A screw is rotatably mounted on the surface of the piston. A groove is formed on the surface of the screw. A slider is fixedly mounted at one end of the feeding pipe and is slidably mounted inside the groove. A second gear is fixedly mounted at the free end of the screw. A second motor is fixedly mounted on the surface of the feeding pipe. A first gear is fixedly mounted on the output shaft of the second motor, and the first gear meshes with the second gear.

[0009] As a preferred embodiment of the present invention, a top plate for blocking the feed hopper is fixedly installed on the surface of the piston, a through hole is opened on the surface of the feed pipe away from the cylinder, a protective plate is fixedly installed at one end of the feed pipe, and the first gear and the second gear are both located inside the protective plate.

[0010] As a preferred embodiment of the present invention, an agitation mechanism is provided inside the cylinder. The agitation mechanism includes a fixed rod rotatably installed inside the cylinder. A first motor is fixedly installed at the top of the cylinder, and the output shaft of the first motor is fixedly connected to the fixed rod. A filter screen is fixedly installed inside the cylinder. Multiple agitating plates are fixedly installed on the surface of the fixed rod near the filter screen, and the agitating plates slide on the surface of the filter screen. A waste bin is connected to the surface of the cylinder near the filter screen.

[0011] As a preferred embodiment of the present invention, a spiral impeller for stirring the airflow is fixedly installed on the surface of the fixed rod, and the surface of the spiral impeller is provided with a plurality of airflow holes for mixing the airflow.

[0012] As a preferred embodiment of the present invention, an oil removal assembly is provided at one end of the fixing rod. The oil removal assembly includes a main scraper installed at one end of the fixing rod. The main scraper slides on the inner bottom wall of the cylinder. An auxiliary scraper is fixedly installed on one side of the main scraper and slides on the inner wall of the cylinder.

[0013] As a preferred embodiment of the present invention, an air jet plate is connected to the outer surface of the main scraper, and a cavity is opened inside the main scraper. An air pump is fixedly installed on one side of the cylinder. The input end of the air pump is connected to the inside of the cylinder through an air suction pipe, and the output end of the air pump is connected to the inside of the fixed rod through an air outlet pipe. The internal space of the fixed rod is connected to the internal cavity of the main scraper.

[0014] As a preferred embodiment of the present invention, an oil cotton is fixedly installed at the bottom of the main scraper, and a conical hole is provided between the oil cotton and the cavity. A carbon ball for filtering odors and impurities is fixedly installed inside the cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention features a cooling mechanism on the outside of the cylinder. Cooling water circulates through an inlet and outlet pipe connected to an external water pump. Two rotating wheels inside the water tank plate not only increase the cooling area but also utilize the impact force of the incoming water flow to drive the wheels, thanks to the arc-shaped pressure plate near the inlet nozzle. This design ensures more thorough and dynamic contact between the cooling water, the wheels, and the water tank plate, rapidly removing heat generated by the dry distillation pyrolysis within the cylinder, significantly improving cooling efficiency and effectively reducing the temperature of the products in the gas and oil tanks. This guarantees stable operation of the device and product quality. Simultaneously, multiple rotating agitators inside the wheels, driven by a third motor, mix and agitate the gas passing through them, further enhancing the heat exchange between the gas and the cooling medium, resulting in more uniform and thorough cooling.

[0017] 2. This invention features a feeding mechanism. The movement of the screw driven by the second motor causes the piston to move linearly within the feeding pipe, enabling precise control of the feed rate. This allows for accurate adjustment of the input amount of biomass raw materials according to actual needs, ensuring the uniformity and stability of the dry distillation and pyrolysis reaction. Furthermore, the top plate fixedly installed on the piston surface can block the feeding funnel during piston movement, effectively preventing gas leakage and the entry of outside air during device operation, thus improving the device's sealing performance.

[0018] 3. This invention utilizes a stirring mechanism installed inside the cylinder. A first motor drives multiple stirring plates to slide on the filter screen surface, which fully agitates the biomass raw materials inside the cylinder, making the raw materials heat more evenly and improving the efficiency and product quality of the dry distillation pyrolysis reaction. At the same time, the spiral impeller installed on the surface of the fixed rod can agitate the airflow inside the cylinder. Multiple airflow holes on the surface of the spiral impeller further enhance the mixing effect of the airflow, promoting full contact and reaction between the gas and the solid raw materials, which is beneficial to improving the yield and quality of combustible gas. In addition, the filter screen can filter and separate the solid waste generated by dry distillation pyrolysis. The waste is discharged through the waste bin, ensuring the continuous and stable operation of the device.

[0019] 4. The present invention features an excellent oil removal and cleaning function through its oil removal components. The main scraper slides on the bottom wall of the cylinder, while the auxiliary scraper slides on the inner wall of the cylinder. This allows for the real-time removal of oil stains and impurities adhering to the inner wall and bottom of the cylinder, preventing oil accumulation from affecting the performance of the device. Simultaneously, the outer surface of the main scraper is connected to an air jet plate. The air pump draws in and compresses the gas inside the cylinder, which is then transported through the air outlet pipe and the internal space of the fixed rod to the cavity inside the main scraper. The gas is then ejected from the air jet plate, forming a powerful airflow impact force, which further assists in cleaning oil stains and impurities, thus improving the cleaning effect.

[0020] 5. This invention utilizes a thermoplastic polyester elastomer breathable membrane on the membrane plate installed at the gas inlet end of the gas tank. This membrane has excellent breathability and waterproof properties, allowing the generated combustible gas to pass smoothly through the membrane plate into the gas tank during the biomass dry distillation pyrolysis process, while effectively preventing the entry of liquids (such as condensate, oil, etc.), ensuring the purity and dryness of the gas inside the gas tank. This is beneficial for subsequent gas treatment and utilization. This breathable and waterproof performance can stably perform in complex working environments, adapting to the harsh conditions such as high temperature, corrosive gases and liquids generated during the dry distillation pyrolysis process, ensuring the normal operation of the device and the effective collection of gas, and improving the conversion efficiency and utilization value of biomass energy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a side view of the structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the cylinder of the present invention;

[0024] Figure 4 This is a schematic diagram of the spiral impeller structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the main scraper structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the main scraper of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal structure of the feed pipe of the present invention;

[0028] Figure 8 This is a schematic diagram of the water tank plate structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the internal structure of the water tank plate of the present invention;

[0030] Figure 10 This is a schematic diagram of the internal structure of the rotor of the present invention.

[0031] In the diagram: 1. Combustion chamber; 2. Waste bin; 3. Cylinder; 4. Gas chamber; 5. Oil tank; 6. Agitator; 61. First motor; 62. Fixed rod; 63. Agitator plate; 64. Filter screen; 65. Spiral impeller; 66. Oil removal assembly; 661. Main scraper; 662. Jet jet plate; 663. Auxiliary scraper; 664. Cavity; 665. Carbon ball; 666. Oil cotton; 667. Suction pipe; 668. Air pump; 669. 7. Air outlet pipe; 71. Feeding mechanism; 72. Feeding pipe; 73. Piston; 74. Top plate; 75. Feeding funnel; 76. Protective plate; 77. Second motor; 78. First gear; 79. Second gear; 80. Screw; 81. Cooling mechanism; 82. Water inlet pipe; 83. Water tank plate; 84. Water outlet pipe; 85. Rotary wheel; 86. Arc-shaped pressure plate; 87. Belt; 88. Stirring plate; 9. Membrane plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-10 This invention provides a biomass dry distillation pyrolysis device, including a combustion chamber 1. A cylinder 3 for dry distillation pyrolysis is provided at the top of the combustion chamber 1. A gas box 4 and an oil tank 5 are respectively connected and installed at the top and bottom of the cylinder 3. A cooling mechanism 8 is provided at the input end of the gas box 4 and the oil tank 5. The cooling mechanism 8 includes a water tank plate 82 installed on the outside of the cylinder 3. The water tank plate 82 is connected and installed in connection with the input pipes of the gas box 4 and the oil tank 5. The water tank plate 82 is connected and installed with an inlet pipe 81 and an outlet pipe 83 through an external water pump. Two rotating wheels 84 for increasing the cooling area are rotatably installed inside the water tank plate 82. The interior of the two rotating wheels 84 is respectively connected to the gas box 4 and the oil tank 5. The two rotating wheels 84 are connected by a belt 86. Multiple arc-shaped pressure plates 85 for driving the rotating wheels 84 to rotate are fixedly installed on the outer surface of the rotating wheels 84 near the water inlet nozzle of the water inlet pipe 81.

[0034] In the biomass dry distillation pyrolysis device, the combustion chamber 1 provides heat, and the cylinder 3 used for dry distillation pyrolysis receives heat to react and then pyrolyzes the material inside the cylinder 3. The top and bottom of the cylinder 3 are connected to the gas box 4, the oil box 5 and the waste box 2, respectively, and are used to collect the combustible gas, bio-oil and biochar produced by pyrolysis after pyrolysis.

[0035] During gas collection, an external water pump supplies water to the water tank plate 82 through the inlet pipe 81. The cooling water flows within the water tank plate 82 and is discharged through the outlet pipe 83, thus cooling the gas. Two rotating wheels 84 mounted inside the water tank plate 82 increase the cooling area. Furthermore, when water is sprayed from the inlet nozzle on the inlet pipe 81, the water flow impacts multiple arc-shaped pressure plates 85 fixedly mounted near the outer surface of the inlet nozzle on the rotating wheels 84, driving the rotating wheels 84 to rotate. This ensures full contact between the cooling water and the rotating wheels 84, enhancing the cooling effect and allowing the gas to cool down. The thermal motion of molecules slows down, reducing the rate of chemical reactions and thus enhancing the stability of the gas. At the same time, through cooling, some impurities will undergo physical or chemical changes due to the decrease in temperature. For example, tar will gradually condense into a liquid state, thus being separated from the gas and improving the purity of the combustible gas. The circulation of cooling water in the water tank plate 82 and the rotation of the impeller 84 greatly increase the cooling area and improve the cooling efficiency, effectively reducing the temperature of the products in the gas tank 4 and oil tank 5, ensuring stable operation of the device and product quality.

[0036] In some embodiments, a plurality of agitators 87 for mixing gases are rotatably mounted inside the rotor 84, and a third motor 88 is fixedly mounted on the outside of the gas box 4, with the output shaft of the third motor 88 fixedly connected to the agitators 87.

[0037] The rotor 84 has multiple agitators 87 installed inside. After the third motor 88 starts, its output shaft drives the agitators 87 to rotate. Since the rotor 84 is connected to the gas tank 4 and the oil tank 5 respectively, the rotating agitators 87 can stir and mix the gas passing through the rotor 84, thereby enhancing the mixing effect of the gas, making the gas composition more uniform, which is beneficial to the subsequent processing and utilization of the gas and improving the quality of the gas.

[0038] In some embodiments, the air inlet end of the air box 4 is provided with a membrane plate 9 for breathability and water stoppage, and the interior of the membrane plate 9 is made of thermoplastic polyester elastomer breathable membrane.

[0039] The membrane plate 9 installed at the air inlet of the gas box 4 is made of thermoplastic polyester elastomer breathable membrane. During the biomass dry distillation and pyrolysis process, the generated gas can enter the gas box 4 through the breathable membrane, while liquids such as condensate and oil are blocked by the membrane and cannot enter. The membrane plate 9 achieves the functions of breathability and water prevention, ensuring the purity and dryness of the gas in the gas box 4, which is beneficial to the subsequent gas treatment and utilization, while preventing liquid from entering and damaging the gas box 4 and related equipment.

[0040] In some embodiments, a feeding mechanism 7 is provided at the top end of the cylinder 3. The feeding mechanism 7 includes a feeding pipe 71 connected to the top end of the cylinder 3. A feeding funnel 74 is connected to the surface of the feeding pipe 71. A piston 72 is provided inside the feeding pipe 71. A screw 79 is rotatably mounted on the surface of the piston 72. A groove is formed on the surface of the screw 79. A slider is fixedly mounted at one end of the feeding pipe 71 and is slidably mounted inside the groove. A second gear 78 is fixedly mounted at the free end of the screw 79. A second motor 76 is fixedly mounted on the surface of the feeding pipe 71. A first gear 77 is fixedly mounted on the output shaft of the second motor 76 and meshes with the second gear 78.

[0041] When the second motor 76 is started, its output shaft drives the first gear 77 to rotate. The first gear 77 meshes with the second gear 78, thereby driving the second gear 78 and the screw 79 to rotate. A sliding groove is opened on the surface of the screw 79, and a slider fixed at one end of the feed pipe 71 is slidably installed in the sliding groove, so that the screw 79 can only move in a straight line. When the screw 79 moves, it drives the piston 72 to move in a straight line in the feed pipe 71, thereby accurately adjusting the feed amount of biomass raw materials and ensuring the uniformity and stability of the dry distillation pyrolysis reaction.

[0042] In some embodiments, a top plate 73 for blocking the feed hopper 74 is fixedly installed on the surface of the piston 72, a through hole is opened on the surface of the feed pipe 71 away from the cylinder 3, a protective plate 75 is fixedly installed on one end of the feed pipe 71, and the first gear 77 and the second gear 78 are both located inside the protective plate 75.

[0043] When the top plate 73 moves below the feed hopper 74, it can block the feed hopper 74 to prevent gas leakage and outside air from entering and affecting the pyrolysis reaction environment during the operation of the device; the feed pipe 71 has through holes on the surface away from the cylinder 3 to ensure the gas pressure balance in the feed pipe 71; the protective plate 75 covers the first gear 77 and the second gear 78 to provide protection.

[0044] In some embodiments, an agitation mechanism 6 is provided inside the cylinder 3. The agitation mechanism 6 includes a fixed rod 62 rotatably installed inside the cylinder 3. A first motor 61 is fixedly installed at the top of the cylinder 3. The output shaft of the first motor 61 is fixedly connected to the fixed rod 62. A filter screen 64 is fixedly installed inside the cylinder 3. A plurality of agitating plates 63 are fixedly installed on the surface of the fixed rod 62 near the filter screen 64, and the agitating plates 63 slide on the surface of the filter screen 64. A waste bin 2 is connected to the surface of the cylinder 3 near the filter screen 64.

[0045] When the first motor 61 starts, its output shaft drives the fixed rod 62 to rotate. Multiple agitator plates 63 are fixedly installed on the surface of the fixed rod 62 near the filter screen 64. When the fixed rod 62 rotates, the agitator plates 63 slide on the surface of the filter screen 64, agitating the biomass raw materials in the cylinder 3, making the biomass raw materials more evenly heated, improving the efficiency of the dry distillation pyrolysis reaction and the quality of the products. The filter screen 64 can filter the solid waste generated by dry distillation pyrolysis, realizing the separation of solid waste from gaseous and liquid products, ensuring the continuous and stable operation of the device, and the waste is discharged through the waste box 2.

[0046] In some embodiments, a spiral impeller 65 for agitating airflow is fixedly mounted on the surface of the fixed rod 62, and the surface of the spiral impeller 65 is provided with a plurality of airflow holes for mixing airflow.

[0047] When the fixed rod 62 rotates, the spiral impeller 65 rotates accordingly, stirring the airflow inside the cylinder 3. The airflow is more fully mixed through the airflow holes, which enhances the mixing effect of the airflow and promotes full contact and reaction between the gas and the solid raw materials, which is beneficial to improving the output and quality of combustible gas.

[0048] In some embodiments, an oil removal assembly 66 is provided at one end of the fixing rod 62. The oil removal assembly 66 includes a main scraper 661 installed at one end of the fixing rod 62. The main scraper 661 slides on the inner bottom wall of the cylinder 3. An auxiliary scraper 663 is fixedly installed on one side of the main scraper 661 and slides on the inner wall of the cylinder 3.

[0049] When the fixed rod 62 rotates, the main scraper 661 and the auxiliary scraper 663 rotate accordingly, scraping off the oil and impurities adhering to the inner wall and bottom of the cylinder 3, preventing the accumulation of oil from affecting the performance of the device, and ensuring the normal operation of the device and the efficiency of the pyrolysis reaction.

[0050] In some embodiments, an air jet plate 662 is connected to the outer surface of the main scraper 661, and a cavity 664 is opened inside the main scraper 661. An air pump 668 is fixedly installed on one side of the cylinder 3. The input end of the air pump 668 is connected to the inside of the cylinder 3 through an air suction pipe 667, and the output end of the air pump 668 is connected to the inside of the fixed rod 62 through an air outlet pipe 669. The internal space of the fixed rod 62 is connected to the internal cavity 664 of the main scraper 661.

[0051] When the air pump 668 is started, it draws air from the cylinder 3 through the suction pipe 667 and then delivers the gas to the inside of the fixed rod 62 through the air outlet pipe 669. Since the internal space of the fixed rod 62 is connected to the internal cavity 664 of the main scraper 661, the gas enters the cavity 664 and is ejected from the jet plate 662, forming an airflow impact that assists in cleaning oil stains and impurities, further enhancing the cleaning effect. It can more effectively remove oil stains and impurities from the cylinder 3, improve cleaning efficiency, and reduce labor intensity.

[0052] In some embodiments, an oil cotton 666 is fixedly installed at the bottom of the main scraper 661, and a tapered hole is provided between the oil cotton 666 and the cavity 664. A carbon ball 665 for filtering odors and impurities is fixedly installed inside the cavity 664.

[0053] When the gas ejected from the jet plate 662 passes through the cavity 664, the carbon ball 665 can filter out odors and impurities. Oil stains and other substances in the gas are adsorbed by the oil cotton 666 through the conical holes. The oil cotton 666 and the carbon ball 665 can filter and adsorb the gas generated during the cleaning process, remove odors and impurities, make the discharged gas cleaner and more environmentally friendly, and reduce pollution to the environment.

[0054] Working Principle: During the dry distillation and pyrolysis of biomass, heat is first provided through the combustion chamber 1. The cylindrical chamber 3, used for dry distillation and pyrolysis, receives the heat and reacts. The material inside the chamber 3 is then pyrolyzed, and the combustible gases, bio-oil, and biochar produced are collected through the gas chamber 4, oil chamber 5, and waste chamber 2, respectively. During gas collection, an external water pump supplies water to the water tank plate 82 through the inlet pipe 81. The cooling water flows within the water tank plate 82 and is discharged through the outlet pipe 83, thus cooling the gas. Two rotating impellers 84 installed inside the water tank plate 82 increase the cooling area. Furthermore, when water is sprayed from the inlet nozzles on the inlet pipe 81, the water flow impacts the impellers 84 near the surface of the inlet nozzles. Multiple arc-shaped pressure plates 85, fixedly installed on the surface, drive the rotating wheel 84 to rotate, ensuring full contact between the cooling water and the rotating wheel 84, thus enhancing the cooling effect. Cooling slows down the thermal motion of gas molecules, reducing the rate of chemical reactions and thereby enhancing the stability of the gas. At the same time, through cooling, some impurities will undergo physical or chemical changes due to the temperature reduction; for example, tar will gradually condense into a liquid state, thus being separated from the gas and improving the purity of the combustible gas. The circulation of cooling water in the water tank plate 82 and the rotation of the rotating wheel 84 greatly increase the cooling area and improve the cooling efficiency, effectively reducing the temperature of the products in the gas tank 4 and oil tank 5, ensuring stable operation of the device and product quality.

[0055] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A biomass dry distillation pyrolysis apparatus, comprising a combustion chamber (1), characterized in that: The combustion chamber (1) is topped with a cylinder (3) for dry distillation pyrolysis. A gas tank (4) and an oil tank (5) are respectively connected to the top and bottom of the cylinder (3). A cooling mechanism (8) is provided at the input ends of the gas tank (4) and the oil tank (5). The cooling mechanism (8) includes a water tank plate (82) installed on the outside of the cylinder (3). The water tank plate (82) is connected to the input pipes of the gas tank (4) and the oil tank (5). The water tank plate (82) is connected to an external water supply. The pump is connected to an inlet pipe (81) and an outlet pipe (83). Inside the water tank plate (82), two rotating wheels (84) are rotatably installed to increase the cooling area. The interior of the two rotating wheels (84) is connected to the air box (4) and the oil tank (5) respectively. The two rotating wheels (84) are connected by a belt (86). Multiple arc-shaped pressure plates (85) that drive the rotating wheels (84) to rotate are fixedly installed on the outer surface of the water inlet nozzle near the inlet pipe (81). The cylinder (3) is provided with an agitation mechanism (6), which includes a fixed rod (62) rotatably installed inside the cylinder (3). A first motor (61) is fixedly installed at the top of the cylinder (3). The output shaft of the first motor (61) is fixedly connected to the fixed rod (62). A filter screen (64) is fixedly installed inside the cylinder (3). Multiple agitating plates (63) are fixedly installed on the surface of the fixed rod (62) near the filter screen (64), and the agitating plates (63) slide on the surface of the filter screen (64). A waste bin (2) is connected to the surface of the cylinder (3) near the filter screen (64). The surface of the fixed rod (62) is fixedly mounted with a spiral impeller (65) for stirring the airflow, and the surface of the spiral impeller (65) is provided with a plurality of airflow holes for mixing the airflow. An oil removal assembly (66) is provided at one end of the fixed rod (62). The oil removal assembly (66) includes a main scraper (661) installed at one end of the fixed rod (62). The main scraper (661) slides on the inner bottom wall of the cylinder (3). An auxiliary scraper (663) is fixedly installed on one side of the main scraper (661) and slides on the inner wall of the cylinder (3). The outer surface of the main scraper (661) is connected to the jet plate (662), and the main scraper (661) has a cavity (664) inside. An air pump (668) is fixedly installed on one side of the cylinder (3). The input end of the air pump (668) is connected to the inside of the cylinder (3) through the suction pipe (667), and the output end of the air pump (668) is connected to the inside of the fixed rod (62) through the air outlet pipe (669). The internal space of the fixed rod (62) is connected to the internal cavity (664) of the main scraper (661).

2. The biomass dry distillation pyrolysis apparatus according to claim 1, characterized in that: The inside of the rotating wheel (84) is equipped with a plurality of stirring blades (87) for mixing gas. A third motor (88) is fixedly installed on the outside of the gas box (4). The output shaft of the third motor (88) is fixedly connected to the stirring blades (87).

3. The biomass dry distillation pyrolysis apparatus according to claim 1, characterized in that: The air inlet of the air box (4) is provided with a membrane plate (9) for breathability and water stoppage, and the interior of the membrane plate (9) is made of thermoplastic polyester elastomer breathable membrane.

4. The biomass dry distillation pyrolysis apparatus according to claim 1, characterized in that: The top of the cylinder (3) is provided with a feeding mechanism (7). The feeding mechanism (7) includes a feeding pipe (71) connected to the top of the cylinder (3). A feeding funnel (74) is connected to the surface of the feeding pipe (71). A piston (72) is provided inside the feeding pipe (71). A screw (79) is rotatably mounted on the surface of the piston (72). A groove is opened on the surface of the screw (79). A slider is fixedly mounted at one end of the feeding pipe (71). The slider is slidably mounted inside the groove. A second gear (78) is fixedly mounted at the free end of the screw (79). A second motor (76) is fixedly mounted on the surface of the feeding pipe (71). A first gear (77) is fixedly mounted on the output shaft of the second motor (76). The first gear (77) meshes with the second gear (78).

5. A biomass dry distillation pyrolysis apparatus according to claim 4, characterized in that: The piston (72) is fixedly mounted with a top plate (73) for blocking the feed funnel (74). The feed pipe (71) has a through hole on its surface away from the cylinder (3). A protective plate (75) is fixedly mounted on one end of the feed pipe (71). The first gear (77) and the second gear (78) are both located inside the protective plate (75).

6. The biomass dry distillation pyrolysis apparatus according to claim 1, characterized in that: The bottom end of the main scraper (661) is fixedly installed with an oil cotton (666), and a conical hole is opened between the oil cotton (666) and the cavity (664). The interior of the cavity (664) is fixedly installed with a carbon ball (665) for filtering odors and impurities.

Images