Biomass gasification furnace energy-saving preheating mechanism based on furnace slag reutilization

Abstract

The biomass gasification furnace energy-saving preheating mechanism comprises a gasification furnace shell of a barrel-shaped structure, a supporting base is fixedly installed outside the lower end of the gasification furnace shell, and a conveying pipe is fixedly installed on the upper surface of the gasification furnace shell in a penetrating mode. A sealing door is rotationally mounted on the front side of the vaporization furnace shell through a hinge, a preheating bin and a vaporization bin are arranged in the vaporization furnace shell, the preheating bin and the vaporization bin are separated and sealed through a partition plate, and a heater is fixedly mounted on the upper surface of the partition plate. According to the biomass gasification furnace energy-saving preheating mechanism based on slag reutilization, after materials enter the preheating bin, oxygen is introduced through the oxygen pipe, then the igniter is turned on to enable the materials to be fully combusted under the aerobic condition, the combusted hot air flows in the heating pipeline, the biomass materials added into the gasification bin again are preheated through the heating pipeline, and the biomass materials are fully heated. And subsequent energy loss is reduced, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass gasification furnaces, in particular to an energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling. Background Art

[0002] Biomass gasifier is a device used to convert biomass raw materials (such as wood chips, straw, waste crops, etc.) into combustible gas. During the biomass gasification process, biomass raw materials undergo pyrolysis under high temperature and oxygen-deficient conditions to produce combustible gases (mainly carbon monoxide, hydrogen and methane) and some solid residues (such as coke).

[0003] In the prior art, a Chinese patent with announcement number CN107796010A discloses a straw biomass gasification furnace, comprising an incineration chamber, a collecting box, a condensing chamber and a bottom plate, wherein the incineration chamber is installed at one end of the top of the bottom plate through a support rod, a collecting box is installed on the bottom plate below the incineration chamber, the bottom end of the incineration chamber is connected with the top of the collecting box through a discharge pipe, a vacuum pump is installed at the top of the incineration chamber, and the input end of the vacuum pump is connected with the interior of the incineration chamber through an air intake pipe, a temperature sensor is arranged at the top of the interior of the incineration chamber, heating blocks are arranged on both sides of the interior of the incineration chamber, a feeding port is arranged on one side of the incineration chamber, a control panel is installed on the incineration chamber below the feeding port, a condensing chamber is installed at one end of the incineration chamber through a support rod, and by installing the heating block, the temperature sensor and the control panel, it is convenient to control the temperature inside the device to reach the ignition point and completely burn the straw.

[0004] The above-mentioned device heats the biomass material through the heating block to achieve the purpose of anaerobic combustion. However, in actual use, when the biomass material is replaced after combustion, a large amount of heat will be dissipated inside the device, and then it needs to be heated again. This process consumes a lot of energy, which is not conducive to energy saving and environmental protection. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving preheating mechanism for a biomass gasification furnace based on slag recycling, so as to solve the problem of being disadvantageous to energy saving and environmental protection in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: an energy-saving preheating mechanism of a biomass gasifier based on slag recycling, comprising a barrel-shaped gasifier shell, a support base is fixedly installed on the lower end of the gasifier shell, and a conveying pipe is fixedly installed on the upper surface of the gasifier shell, and also includes:

[0007] A sealed door is rotatably installed on the front side of the vaporizer shell by means of a hinge, and a preheating chamber and a vaporization chamber are arranged inside the vaporizer shell, and the preheating chamber and the vaporization chamber are separated and sealed by a partition plate, and a heater is fixedly installed on the upper surface of the partition plate;

[0008] A heating pipe is installed inside the preheating bin, and the upper end of the heating pipe is located inside the vaporization bin to preheat the biomass material;

[0009] A stirring mechanism for stirring the biomass material is arranged inside the vaporization bin.

[0010] Preferably, an igniter fixed to the inner wall of the gasification furnace shell is installed inside the preheating chamber, and an oxygen pipe for introducing oxygen is fixedly installed through the side of the preheating chamber.

[0011] Preferably, the upper end of the heating pipe is configured as a bent structure to increase the contact area, and the heating pipe is a hollow copper tube structure.

[0012] Preferably, a driven bevel gear located outside the gasifier shell is fixedly mounted on the side of the partition plate, and a driving bevel gear is meshingly connected below the driven bevel gear, and the driving bevel gear is driven to rotate by a driving motor fixedly mounted outside the gasifier shell.

[0013] Preferably, the stirring mechanism comprises a pressurizing nozzle fixedly mounted on the top of the heating pipe, and the pressurizing nozzle corresponds to the position of the rotating blades at the rear of the vaporization furnace shell.

[0014] Preferably, the rotating blade is rotationally connected to the outer shell of the gasification furnace, and a driving gear is coaxially fixedly mounted on the front end of the rotating blade.

[0015] Preferably, a driven gear is meshingly connected below the driving gear, and the diameter of the driven gear is larger than the diameter of the driving gear, and a stirring rod located inside the vaporization chamber is coaxially fixedly mounted on the side surface of the driven gear.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the energy-saving preheating mechanism of the biomass gasification furnace based on slag recycling adopts a new structural design, and its specific contents are as follows:

[0017] 1. Use a heater to heat the biomass material in the vaporization bin, so that the biomass material burns in an oxygen-deficient environment to produce combustible gas. After the combustion is completed, open the partition plate to guide the biomass material into the preheating bin below to achieve the purpose of recycling;

[0018] Furthermore, after entering the preheating chamber, oxygen is introduced through an oxygen pipe, and then the igniter is turned on to fully burn the material in an aerobic environment. The hot air from the combustion flows in the heating pipe, and the heating pipe is used to preheat the biomass material added back to the vaporization chamber, thereby reducing subsequent energy loss and achieving the purpose of energy saving.

[0019] 2. The hot air in the heating pipe is ejected through the pressurized nozzle. Under the action of the airflow, the rotating blades are blown to rotate, so that the rotating blades drive the driving gear to rotate. At this time, the stirring rod is driven to rotate under the transmission action of the driven gear. The stirring rod is used to stir the material in the vaporization bin to make the preheating more uniform;

[0020] Furthermore, due to the difference in the number of teeth between the driving gear and the driven gear, the torque is increased to avoid insufficient power to drive the stirring rod to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell of the vaporizer of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the partition plate of the utility model;

[0024] Figure 4 This is a schematic diagram of the back structure of the gasification furnace shell of the utility model;

[0025] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0026] Figure 6 This is a schematic diagram of the connection relationship between the driving gear and the driven gear of the utility model.

[0027] In the figure: 1. Vaporization furnace shell; 2. Support base; 3. Delivery pipe; 4. Sealing door; 5. Preheating chamber; 6. Vaporization chamber; 7. Partition plate; 701. Heater; 8. Ignitor; 9. Oxygen tube; 10. Heating pipe; 11. Driven bevel gear; 12. Driving bevel gear; 13. Driving motor; 14. Pressurized nozzle; 15. Rotating blades; 16. Driving gear; 17. Driven gear; 18. Stirring rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 3 In order to solve the problem that traditional devices cannot recycle slag, this embodiment provides the following technical solutions, which specifically disclose: a vaporizer shell 1 with a barrel-shaped structure, a support base 2 is fixedly installed on the outside of the lower end of the vaporizer shell 1, and a conveying pipe 3 is fixedly installed on the upper surface of the vaporizer shell 1, a sealing door 4 is rotatably installed on the front side of the vaporizer shell 1 by using a hinge, and a preheating bin 5 and a vaporizer bin 6 are arranged inside the vaporizer shell 1, and the preheating bin 5 and the vaporizer bin 6 are separated and sealed by a partition plate 7, a heater 701 is fixedly installed on the upper surface of the partition plate 7, a driven bevel gear 11 located outside the vaporizer shell 1 is fixedly installed on the side of the partition plate 7, and a driving bevel gear 12 is meshed and connected below the driven bevel gear 11, and the driving bevel gear 12 is driven to rotate by a driving motor 13 fixedly installed on the outside of the vaporizer shell 1.

[0030] When using the device, first open the sealing door 4 to put the biomass material (such as straw and other materials) into the vaporization bin 6 inside the vaporization furnace shell 1, then close the sealing door 4 and turn on the heater 701 to heat the biomass material put in, so that the biomass material burns in the absence of oxygen, and the combustible gas is discharged from the conveying pipe 3. After the combustion is completed, turn on the drive motor 13, so that the drive motor 13 drives the active bevel gear 12 to rotate, and at this time, the driven bevel gear 11 meshing with the active bevel gear 12 drives the partition plate 7 to rotate, and the burned biomass material is poured into the preheating bin 5 below for recovery.

[0031] See also Figure 2 In order to achieve the purpose of preheating, the present embodiment provides the following technical solutions, which specifically disclose: a heating pipe 10 is installed through the preheating chamber 5, and the upper end of the heating pipe 10 is located inside the vaporization chamber 6 to preheat the biomass material, an igniter 8 fixed to the inner wall of the vaporization furnace shell 1 is installed inside the preheating chamber 5, and an oxygen pipe 9 for introducing oxygen is fixedly installed through the side of the preheating chamber 5, the upper end of the heating pipe 10 is set to a bent structure to increase the contact area, and the heating pipe 10 is a hollow copper tube structure.

[0032] After the new biomass material is put in, the igniter 8 and the oxygen pipe 9 are turned on, and oxygen is introduced into the preheating chamber 5 through the oxygen pipe 9. Then the igniter 8 ignites the recovered biomass material, and the hot air after combustion flows into the heating pipe 10. The heating pipe 10 is used to preheat the newly put in biomass material to reduce subsequent energy loss.

[0033] See also Figure 4-Figure 6 In order to achieve a better preheating effect, the present embodiment provides the following technical solutions, which specifically disclose: a stirring mechanism for stirring the biomass material is arranged inside the vaporization bin 6, and the stirring mechanism includes a pressurizing nozzle 14 fixedly mounted on the top of the heating pipe 10, and the pressurizing nozzle 14 corresponds to the position of a rotating blade 15 at the rear of the vaporization furnace shell 1, the rotating blade 15 is rotationally connected to the vaporization furnace shell 1, and a driving gear 16 is coaxially fixedly mounted on the front end of the rotating blade 15, a driven gear 17 is meshedly connected below the driving gear 16, and the diameter of the driven gear 17 is larger than that of the driving gear 16, and a stirring rod 18 located inside the vaporization bin 6 is coaxially fixedly mounted on the side of the driven gear 17.

[0034] The hot air in the heating pipe 10 is finally ejected from the pressurized nozzle 14, and the rotating blades 15 are driven to rotate under the action of the airflow. During the rotation of the rotating blades 15, the driving gear 16 is driven to rotate, and the driving gear 16 is used to drive the driven gear 17 meshing with it to rotate (the difference in the number of teeth between the driving gear 16 and the driven gear 17 is used to increase the rotation torque), and finally the driven gear 17 drives the stirring rod 18 to rotate, and the stirring rod 18 is used to stir the vaporization chamber 6, so that the preheating of the biomass material is more uniform.

[0035] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving preheating mechanism for a biomass gasifier based on slag recycling, comprising a gasifier shell (1) in a barrel-shaped structure, a support base (2) fixedly installed on the lower end of the gasifier shell (1), and a conveying pipe (3) fixedly installed through the upper surface of the gasifier shell (1), characterized in that: Also includes: A sealed door (4) is rotatably mounted on the front side of the vaporizer shell (1) by means of a hinge, and a preheating chamber (5) and a vaporization chamber (6) are arranged inside the vaporizer shell (1), and the preheating chamber (5) and the vaporization chamber (6) are separated and sealed by a partition plate (7), and a heater (701) is fixedly mounted on the upper surface of the partition plate (7); A heating pipe (10) is installed through the interior of the preheating chamber (5), and the upper end of the heating pipe (10) is located inside the vaporization chamber (6) to preheat the biomass material; A stirring mechanism for stirring the biomass material is arranged inside the vaporization bin (6).

2. The energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling according to claim 1 is characterized in that: An igniter (8) fixed to the inner wall of the vaporizer shell (1) is installed inside the preheating chamber (5), and an oxygen pipe (9) for introducing oxygen is fixedly installed and penetrated through the side of the preheating chamber (5).

3. The energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling according to claim 1 is characterized in that: The upper end of the heating pipe (10) is arranged as a bent structure for increasing the contact area, and the heating pipe (10) is a hollow copper pipe structure.

4. The energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling according to claim 1 is characterized in that: A driven bevel gear (11) located outside the vaporizer housing (1) is fixedly mounted on the side of the partition plate (7), and a driving bevel gear (12) is meshingly connected below the driven bevel gear (11), and the driving bevel gear (12) is driven to rotate by a driving motor (13) fixedly mounted outside the vaporizer housing (1).

5. The energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling according to claim 3 is characterized in that: The stirring mechanism comprises a pressurizing nozzle (14) fixedly mounted on the top of the heating pipe (10), and the pressurizing nozzle (14) corresponds to the position of the rotating blade (15) at the rear of the vaporizing furnace shell (1).

6. The energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling according to claim 5 is characterized in that: The rotating blade (15) is rotationally connected to the gasification furnace shell (1), and a driving gear (16) is coaxially fixedly mounted on the front end of the rotating blade (15).

7. The energy-saving preheating mechanism of a biomass gasification furnace based on slag recycling according to claim 6 is characterized in that: A driven gear (17) is meshingly connected below the driving gear (16), and the diameter of the driven gear (17) is larger than the diameter of the driving gear (16). A stirring rod (18) located inside the vaporization chamber (6) is coaxially fixedly mounted on the side of the driven gear (17).

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