Biomass pyrolysis pretreatment device

Abstract

The utility model discloses a biomass pyrolysis pretreatment device, which relates to the field of biomass pyrolysis pretreatment devices, and comprises a working table, a sleeve is arranged above the working table, an inner pipe is arranged in the sleeve, a space is arranged between the sleeve and the inner pipe, an air inlet pipe and an air outlet pipe are arranged on the surface of the sleeve, and the air inlet pipe and the air outlet pipe are communicated with each other. An inner pipe is arranged on the surface of the workbench, a screw rod is installed in the inner pipe, biomass is placed in the inner pipe, an oxygen-free pipe is arranged at the end of the inner pipe, and a driving assembly is installed on the surface of the workbench and used for enabling the screw rod to rotate. According to the biomass pyrolysis pretreatment device disclosed by the utility model, the screw rod, the inner pipe and the gas inlet pipe are arranged, high-temperature gas is taken into the space between the inner pipe and the sleeve from the gas inlet pipe, the screw rod rotates, blades of the screw rod drive biomass to move, and the biomass rotates by friction force with the inner wall of the inner pipe; therefore, close-distance contact with high-temperature gas can be realized, quicker heat transfer is realized, and a better carbonization effect is ensured.

Description

Technical Field

[0001] The utility model relates to the field of biomass pyrolysis pretreatment devices, and particularly relates to a biomass pyrolysis pretreatment device. Background Technique

[0002] Biomass is the only renewable carbon resource, with significant advantages such as wide sources and rich reserves. By using advanced biomass thermochemical conversion technologies, various high-value fuels, chemicals, and carbon-based materials can be obtained, thereby realizing partial substitution of fossil resources. Under the condition of isolating air or introducing a small amount of air, the chemical bonds in biomass macromolecules are broken by heat energy to transform them into low-molecular substances, so as to achieve better utilization.

[0003] During the process of high-temperature heating of biomass, the biomass is placed in a high-temperature environment and heated by heat transfer. However, due to the large quantity of biomass and the different distances between the biomass at different positions and the heat source, the biomass will be unevenly heated, affecting the carbonization effect. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a biomass pyrolysis pretreatment device, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a biomass pyrolysis pretreatment device, including a workbench, a sleeve is arranged above the workbench, an inner tube is arranged inside the sleeve, a space is arranged between the sleeve and the inner tube, an air inlet pipe and an air outlet pipe are installed on the surface of the sleeve, a spiral rod is installed inside the inner tube, the biomass is placed inside the inner tube, an anaerobic pipe is arranged at the end of the inner tube, and a driving component is installed on the surface of the workbench for rotating the spiral rod.

[0006] A ventilation groove is opened in the middle of the spiral rod, and high-temperature gas is introduced into the ventilation groove.

[0007] The air outlet pipe is set in a U shape, a bearing is fixedly installed at one end inside the ventilation groove, one end of the air outlet pipe is fixed inside the bearing, and the other end of the air outlet pipe is fixed at the position between the inner tube and the sleeve.

[0008] The driving component includes a driving motor, the driving motor is fixed inside the workbench, a semi-sealed pipe is installed at the end of the ventilation groove away from the anaerobic pipe, the output shaft of the driving motor is fixed at the sealed end of the semi-sealed pipe, and an exhaust pipe is installed on the surface of the semi-sealed pipe, and the exhaust pipe is located outside the semi-sealed pipe.

[0009] One end of the inner tube extends to the outside of the sleeve, and a pyrolysis gas pipe and a discharge pipe are installed on the surface of the protruding position of the inner tube.

[0010] The discharge pipe is located at the directly lower position, and the pyrolysis gas pipe is located at the directly upper position.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, by arranging the screw rod, the inner pipe and the air inlet pipe, high-temperature gas is introduced from the air inlet pipe between the inner pipe and the sleeve. The screw rod rotates, and the blades of the screw rod drive the biomass to move. The biomass rotates due to the frictional force with the inner wall of the inner pipe, so as to realize uniform heating of the biomass, achieve faster heat transfer, and ensure better carbonization effect.

[0013] 2. In the utility model, by arranging the air outlet pipe and the ventilation groove, high-temperature gas enters the position between the sleeve and the inner pipe, and then enters the inside of the ventilation groove from the air outlet pipe. The biomass is heated by the gas on both the inside and outside, improving the heating efficiency, realizing the reuse of high-temperature gas, and reducing energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of a biomass pyrolysis pretreatment device of the utility model;

[0015] Figure 2 is the partial structural schematic diagram of the bearing position of a biomass pyrolysis pretreatment device of the utility model;

[0016] Figure 3 is the partial structural schematic diagram of the ventilation groove position of a biomass pyrolysis pretreatment device of the utility model;

[0017] Figure 4 is the partial structural schematic diagram of the inner pipe position of a biomass pyrolysis pretreatment device of the utility model.

[0018] In the figure: 1, workbench; 2, sleeve; 3, inner pipe; 4, air inlet pipe; 5, air outlet pipe; 6, screw rod; 7, anaerobic pipe; 8, ventilation groove; 9, bearing; 10, drive motor; 11, semi-sealed pipe; 12, exhaust pipe; 13, pyrolysis gas pipe; 14, discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the technical means, creative features, achieving purposes and functions of the utility model easy to understand, the utility model is further described below in conjunction with the specific embodiments.

[0020] Such as Figures 1-4As shown in the figure, a biomass pyrolysis pretreatment device includes a workbench 1. Above the workbench 1, there is a sleeve 2. Inside the sleeve 2, there is an inner tube 3. A feed pipe is arranged on the surface of the inner tube 3. The feed pipe penetrates through the sleeve 2. Both ends of the connection position between the sleeve 2 and the inner tube 3 are sealed. There is a space between the sleeve 2 and the inner tube 3. An inlet pipe 4 and an outlet pipe 5 are installed on the surface of the sleeve 2. High-temperature hot gas enters from the inlet pipe 4 and is discharged from the inside of the outlet pipe 5. A screw rod 6 is installed inside the inner tube 3. Biomass is placed inside the inner tube 3. An anaerobic pipe 7 is arranged at the end of the inner tube 3. A driving assembly is installed on the surface of the workbench 1 to make the screw rod 6 rotate.

[0021] The raw material is placed into the inner tube 3 from the feed pipe. High-temperature gas is introduced between the inner tube 3 and the sleeve 2 from the inlet pipe 4. The screw rod 6 rotates under the action of the driving assembly. The blades of the screw rod 6 drive the biomass to move. The biomass rotates due to the frictional force with the inner wall of the inner tube 3, so that it can be in close contact with the high-temperature gas, realizing faster heat transfer, ensuring better carbonization effect. And as the screw rod 6 rotates, the biomass gradually moves out of the inner tube 3.

[0022] A ventilation groove 8 is opened in the middle of the screw rod 6. High-temperature gas is introduced into the ventilation groove 8. The biomass is heated simultaneously by the gas on both the inside and outside, improving the heating efficiency.

[0023] The outlet pipe 5 is set in a U shape. One end inside the ventilation groove 8 is fixedly installed with a bearing 9. The bearing 9 is preferably a sealed bearing to prevent anaerobic gas from entering the ventilation groove 8. One end of the outlet pipe 5 is fixed inside the bearing 9. The bearing 9 can prevent the screw rod 6 from driving the outlet pipe 5 to rotate. The other end of the outlet pipe 5 is fixed at the position between the inner tube 3 and the sleeve 2. High-temperature gas enters the position between the sleeve 2 and the inner tube 3, and then enters the ventilation groove 8 from the outlet pipe 5, realizing the reuse of high-temperature gas and reducing energy waste.

[0024] The driving assembly includes a driving motor 10. The driving motor 10 is fixed inside the workbench 1. A semi-sealed pipe 11 is installed at one end of the ventilation groove 8 away from the anaerobic pipe 7. The output shaft of the driving motor 10 is fixed at the sealed end of the semi-sealed pipe 11. An exhaust pipe 12 is installed on the surface of the semi-sealed pipe 11. The exhaust pipe 12 is located outside the semi-sealed pipe 11. When the driving motor 10 starts, it drives the semi-sealed pipe 11 to rotate. The semi-sealed pipe 11 makes the screw rod 6 rotate, thus realizing the transmission of the biomass. And both the bearing 9 and the inner tube 3 provide a large supporting force for the screw rod 6 to ensure the stable rotation of the screw rod 6.

[0025] One end of the inner tube 3 extends to the outside of the sleeve 2, and a pyrolysis gas pipe 13 and a discharge pipe 14 are installed on the surface of the protruding position of the inner tube 3.

[0026] The discharge pipe 14 is located at the lower position, and the pyrolysis gas pipe 13 is located at the upper position, facilitating the discharge of biomass and the pyrolysis gas pipe 13.

[0027] It should be noted that the present utility model is a biomass pyrolysis pretreatment device. When in use, the raw materials first need to be dried. The processed raw materials are placed into the inner tube 3 from the feed pipe. The combustion chamber is set to introduce natural gas into it. The natural gas is burned to generate high-temperature gas. The high-temperature gas enters between the inner tube 3 and the sleeve 2 from the intake pipe 4. The drive motor 10 is started to drive the semi-sealed tube 11 to rotate. The semi-sealed tube 11 causes the screw rod 6 to rotate, thereby realizing the transmission of biomass. The blades of the screw rod 6 drive the biomass to move. The biomass rotates due to the frictional force with the inner wall of the inner tube 3, so that it can be in close contact with the high-temperature gas, realizing faster heat transfer. The high-temperature gas enters the position between the sleeve 2 and the inner tube 3, and then enters the inside of the ventilation groove 8 from the outlet pipe 5, and then passes through the semi-sealed tube 11 and is discharged from the inside of the exhaust pipe 12, realizing the reuse of the high-temperature gas and reducing energy waste. An anaerobic gas is introduced into the anaerobic tube 7. The anaerobic gas passes through the inside of the inner tube 3, and the pyrolysis gas is discharged from the inside of the pyrolysis gas pipe 13. The pyrolysis gas can be introduced into the combustion chamber to generate high-temperature gas. The gas discharged from the exhaust pipe 12 position can be reused to dry the raw materials, thereby further improving the utilization rate of heat.

[0028] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A biomass pyrolysis pretreatment device, comprising a workbench (1), characterized in that: A sleeve (2) is arranged above the workbench (1), an inner tube (3) is arranged inside the sleeve (2), a space is arranged between the sleeve (2) and the inner tube (3), an air inlet pipe (4) and an air outlet pipe (5) are installed on the surface of the sleeve (2), a spiral rod (6) is installed inside the inner tube (3), biomass is placed inside the inner tube (3), an anaerobic tube (7) is arranged at the end of the inner tube (3), and a driving component is installed on the surface of the workbench (1) for rotating the spiral rod (6).

2. A biomass pyrolysis pretreatment device according to claim 1, characterized in that: A ventilation groove (8) is provided in the middle of the spiral rod (6), and high-temperature gas is passed into the ventilation groove (8).

3. A biomass pyrolysis pretreatment device according to claim 2, characterized in that: The air outlet pipe (5) is configured to be U-shaped, a bearing (9) is fixedly mounted on one end of the interior of the ventilation groove (8), one end of the air outlet pipe (5) is fixed inside the bearing (9), and the other end of the air outlet pipe (5) is fixed at a position between the inner tube (3) and the sleeve (2).

4. A biomass pyrolysis pretreatment device according to claim 3, characterized in that: The driving assembly comprises a driving motor (10), wherein the driving motor (10) is fixed inside the workbench (1), a semi-sealed tube (11) is installed at one end of the ventilation groove (8) away from the oxygen-free tube (7), an output shaft of the driving motor (10) is fixed at the sealed end of the semi-sealed tube (11), an exhaust pipe (12) is installed on the surface of the semi-sealed tube (11), and the exhaust pipe (12) is located outside the semi-sealed tube (11).

5. A biomass pyrolysis pretreatment device according to claim 4, characterized in that: One end of the inner tube (3) extends to the outside of the sleeve (2), and a pyrolysis gas pipe (13) and a discharge pipe (14) are installed on the surface of the protruding position of the inner tube (3).

6. A biomass pyrolysis pretreatment device according to claim 5, characterized in that: The discharge pipe (14) is located at a directly lower position, and the pyrolysis gas pipe (13) is located at a directly upper position.

Images