Side suction gasifier

Abstract

The invention relates to a side-suction gasifier, belonging to the technical field of biomass gasifiers, comprising a belt conveyor feeder, a furnace body, a mesh rotating grate and a spiral elevator, wherein the furnace body comprises an inner sleeve and an outer sleeve, the diameter of the outer sleeve is greater than the diameter of the inner sleeve, a flange is fixedly connected to the middle position of the side wall of the inner sleeve, the flange is fixedly connected to the upper end of the outer sleeve, the mesh rotating grate is fixedly connected to the bottom of the outer sleeve, a blower is connected to the bottom of the mesh rotating grate, a discharge port is arranged at the bottom of the mesh rotating grate, and the discharge port is connected to the spiral elevator; gasification medium enters the furnace body from the top opening of the inner sleeve along with fuel, the blower blows the gasification medium into the furnace body from the bottom of the furnace body, the gasification medium is introduced from the top and bottom of the furnace body, the speed of the thermochemical reaction of the fuel is increased, the ash is output from the furnace body through the discharge port by the spiral elevator, and the ash is easy to clean.

Description

Technical Field

[0001] The invention relates to the technical field of biomass gasifiers, and in particular to a side-suction gasifier. Background Art

[0002] Biomass gasification is a process in which the polymers of biomass undergo pyrolysis, oxidation, reduction and reforming reactions under certain thermodynamic conditions with the help of air (or oxygen) and water vapor, and are finally converted into combustible gases such as carbon monoxide, hydrogen and low molecular hydrocarbons. Fixed bed is an important bed type of biomass gasifier, which can be divided into updraft, downdraft and open-center types. However, the gasification medium of the above-mentioned gasifiers enters in one direction, which not only reduces the chemical reaction rate of biomass, but also fails to achieve the purpose of high carbon production. In addition, the produced biochar is difficult to clean. Summary of the invention

[0003] In view of the above problems in the prior art, the present invention provides a side suction gasifier, which is achieved through the following technical solutions:

[0004] A side-suction gasification furnace comprises a belt conveyor loader, a furnace body, a mesh rotating grate and a spiral elevator, the furnace body comprises an inner sleeve and an outer sleeve, the diameter of the outer sleeve is larger than the diameter of the inner sleeve, a flange is fixedly connected to the middle position of the side wall of the inner sleeve, the flange is fixedly connected to the upper end of the outer sleeve, the flange is connected to an induced draft fan through a pipeline, the mesh rotating grate is fixedly connected to the bottom of the outer sleeve, the bottom of the mesh rotating grate is connected to a blower, a discharge port is provided at the bottom of the mesh rotating grate, and the discharge port is connected to the spiral elevator.

[0005] The present invention is further configured as follows: the mesh rotating grate comprises a fixed bottom plate and a rotating top plate, the upper end surface of the fixed bottom plate is fixedly connected to a support seat, the cross-section of the support seat is annular, the rotating top plate comprises a first umbrella cover, a second umbrella cover and a rotating shaft, the first umbrella cover is fixedly connected to the second umbrella cover, the rotating shaft is fixedly connected to the second umbrella cover as the umbrella shaft of the second umbrella cover, the rotating shaft is connected to a reducer and is fixedly connected to the output shaft of the reducer through a coupling, the second umbrella cover is arranged on the support seat, a first air outlet is opened on the top of the second umbrella cover, air vents are evenly opened on the first umbrella cover, the discharge port is opened on the fixed bottom plate and is located on one side of the outer wall of the support seat, and the blower air outlet is located in the inner cavity of the support seat.

[0006] The present invention is further configured as follows: a steel ball is rotatably connected to the upper end surface of the support seat, the steel ball protrudes from the upper end surface of the support seat and the protruding distance is less than the radius of the steel ball, a support plate is fixedly connected to the inner wall of the second umbrella cover, the lower end surface of the support plate is in contact with the steel ball, and a second air outlet is evenly opened on the support plate.

[0007] The present invention is further configured as follows: an air baffle is fixedly connected to the bottom of the first umbrella cover, and the air baffle is fixedly connected to the outer side wall of the second umbrella cover.

[0008] The present invention is further configured as follows: a scraper plate is fixedly connected to the outer side wall of the bottom of the second umbrella cover, and the bottom of the scraper plate is in contact with the upper end surface of the fixed bottom plate.

[0009] The present invention is further configured as follows: a serrated carbon-moving plate is evenly and fixedly connected to the outer side wall of the first umbrella cover.

[0010] The present invention is further configured as follows: the side walls of the inner sleeve and the outer sleeve are both arranged as cavities, and liquid medium is arranged in the cavities.

[0011] In summary, the beneficial technical effects of the present invention are:

[0012] The gasification medium enters the furnace body along with the fuel from the opening at the top of the inner sleeve. The blower blows the gasification medium into the furnace body from the bottom of the furnace body. The gasification medium enters the furnace body from top to bottom to increase the speed of the fuel thermochemical reaction. The ash is discharged from the furnace body through the discharge port by a spiral elevator, making it easy to clean the ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram for showing the overall structure of this embodiment;

[0014] Figure 2 It is a diagram for showing a partial method of a mesh rotating grate.

[0015] Figure numerals: 1. belt conveyor loader; 2. furnace body; 21. inner sleeve; 211. flange; 22. outer sleeve; 3. mesh rotating grate; 4. spiral elevator; 31. fixed bottom plate; 311. discharge port; 312. support seat; 313 steel ball; 32. rotating top plate; 321. first umbrella cover; 322. second umbrella cover; 323. first air outlet; 324. rotating shaft; 325. vent; 326. second air outlet; 327. air baffle; 328. dust scraper; 329. charcoal plucking plate; 5. reducer; 6. blower; 7. induced draft fan; 8. support plate. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0017] Example

[0018] like Figure 1-2As shown, a side-suction gasifier disclosed in the present invention comprises a belt conveyor loader 1, a furnace body 2, a mesh rotary grate 3 and a spiral elevator 4, the furnace body 2 comprises an inner sleeve 21 and an outer sleeve 22, the diameter of the outer sleeve 22 is larger than the diameter of the inner sleeve 21, a flange 211 is fixedly connected to the middle position of the side wall of the inner sleeve 21, the flange 211 is fixedly connected to the upper end of the outer sleeve 22, the flange 211 is connected to the induced draft fan 7 through a pipeline, the mesh rotary grate 3 is fixedly connected to the bottom of the outer sleeve 22, the bottom of the mesh rotary grate 3 is connected to the blower 6, a discharge port 311 is provided at the bottom of the mesh rotary grate 3, and the discharge port 311 is connected to the spiral elevator 4. The gasification medium enters the furnace body 2 from the top opening of the inner sleeve 21 along with the fuel, and the blower 6 blows the gasification medium into the furnace body 2 from the bottom of the furnace body 2. The gasification medium enters the furnace body 2 from the upper and lower directions to increase the speed of the fuel thermochemical reaction. The ash is output from the furnace body 2 through the discharge port 311 by the spiral elevator 4, and the ash is easy to clean. The side walls of the inner sleeve 21 and the outer sleeve 22 are both arranged as cavities, and a liquid medium is arranged in the cavity. The liquid medium is water, and the side walls of the inner sleeve 21 and the outer sleeve 22 are filled with water, which is convenient for keeping the temperature of the inner cavity of the furnace body 2 warm.

[0019] The mesh rotary grate 3 includes a fixed bottom plate 31 and a rotating top plate 32. The upper end surface of the fixed bottom plate 31 is fixedly connected to a support seat 312. The cross section of the support seat 312 is annular. The rotating top plate 32 includes a first umbrella cover 321, a second umbrella cover 322 and a rotating shaft 324. The first umbrella cover 321 is fixedly connected to the second umbrella cover 322. The rotating shaft 324 is fixedly connected to the second umbrella cover 322 as the umbrella shaft of the second umbrella cover 322. The rotating shaft 324 is connected to the reducer 5 and is fixedly connected to the output shaft of the reducer 5 through a coupling. The second umbrella cover 322 is covered on the support seat 312. A first air outlet 323 is opened on the top of the second umbrella cover 322. Ventilation holes 325 are evenly opened on the first umbrella cover 321. The discharge port 311 is opened on the fixed bottom plate 31 and is located on one side of the outer wall of the support seat 312. The air outlet of the blower 6 is located in the inner cavity of the support seat 312. The gasified medium blown by the blower 6 enters the inner cavity of the furnace body 2 through the first gas outlet 323 and the air vent 325, thereby increasing the content of the gasified medium in the furnace body 2 and increasing the speed of the fuel thermochemical reaction.

[0020] The upper end surface of the support seat 312 is rotatably connected with a steel ball 313, which protrudes from the upper end surface of the support seat 312 and the protruding distance is less than the radius of the steel ball 313. The inner wall of the second umbrella cover 322 is fixedly connected with a support plate 8, the lower end surface of the support plate 8 contacts the steel ball 313, and the support plate 8 is evenly provided with second air outlets 326. Through the contact between the support plate 8 and the steel ball 313, the support seat 312 supports the second umbrella cover 322, so that the rotation of the entire mesh rotary grate 3 is more stable.

[0021] The first umbrella cover 321 is fixedly connected to the bottom with an air baffle 327, which is fixedly connected to the outer wall of the second umbrella cover 322. The air baffle 327 is arranged at the bottom of the first umbrella cover 321 to prevent the gasified medium blown in by the blower 6 from overflowing from the bottom of the first umbrella cover 321, thereby avoiding blowing up the ash on the fixed bottom plate 31.

[0022] The second umbrella cover 322 is fixedly connected to the outer wall at the bottom with a scraper plate 328, and the bottom of the scraper plate 328 contacts the upper end surface of the fixed bottom plate 31. When the second umbrella cover 322 rotates, the scraper plate 328 is driven to rotate, thereby moving the ash falling on the fixed bottom plate 31 and discharging it through the discharge port 311.

[0023] The outer wall of the first umbrella cover 321 is evenly fixed with a sawtooth charcoal-moving plate 329. The charcoal-moving plate 329 facilitates the ash falling on the first umbrella cover 321 to be moved into small particles, so that the ash can fall from between the first umbrella cover 321 and the outer sleeve 22 onto the fixed bottom plate 31.

Claims

1. A side suction gasifier, characterized in that: The invention comprises a belt conveyor feeder (1), a furnace body (2), a mesh rotary grate (3) and a screw elevator (4), wherein the furnace body (2) comprises an inner sleeve (21) and an outer sleeve (22), the diameter of the outer sleeve (22) being larger than the diameter of the inner sleeve (21), a flange (211) being fixedly connected to the middle position of the side wall of the inner sleeve (21), the flange (211) being fixedly connected to the upper end of the outer sleeve (22), the flange (211) being connected to an induced draft fan (7) via a pipeline, the mesh rotary grate (3) being fixedly connected to the bottom of the outer sleeve (22), the bottom of the mesh rotary grate (3) being connected to a blower (6), a discharge port (311) being provided at the bottom of the mesh rotary grate (3), the discharge port (311) being connected to the screw elevator (4); The mesh rotary grate (3) comprises a fixed bottom plate (31) and a rotating top plate (32); the upper end surface of the fixed bottom plate (31) is fixedly connected to a support seat (312); the cross section of the support seat (312) is annular; the rotating top plate (32) comprises a first umbrella cover (321), a second umbrella cover (322) and a rotating shaft (324); the first umbrella cover (321) is fixedly connected to the second umbrella cover (322); the rotating shaft (324) is fixedly connected to the second umbrella cover (322) as the umbrella shaft of the second umbrella cover (322); the rotating shaft (324) is connected to a reducer (5) and is connected to an output shaft of the reducer (5) through a coupling. The second umbrella cover (322) is fixedly connected, the second umbrella cover (322) is covered on the support seat (312), the top of the second umbrella cover (322) is provided with a first air outlet (323), the first umbrella cover (321) is evenly provided with air vents (325), the discharge port (311) is provided on the fixed bottom plate (31) and is located on one side of the outer wall of the support seat (312), and the air outlet of the blower (6) is located in the inner cavity of the support seat (312); the gasified medium blown in by the blower (6) enters the inner cavity of the furnace body (2) through the first air outlet (323) and the air vents (325), thereby increasing the content of the gasified medium in the furnace body (2) and increasing the speed of the fuel thermochemical reaction; The upper end surface of the support seat (312) is rotatably connected to a steel ball (313), the steel ball (313) protrudes from the upper end surface of the support seat (312) and the protruding distance is less than the radius of the steel ball (313), the inner wall of the second umbrella cover (322) is fixedly connected to a support plate (8), the lower end surface of the support plate (8) is in contact with the steel ball (313), and the support plate (8) is evenly provided with second air outlets (326); An air baffle (327) is fixedly connected to the bottom of the first umbrella cover (321), and the air baffle (327) is fixedly connected to the outer wall of the second umbrella cover (322); the air baffle (327) is provided to prevent the gasified medium blown in by the blower (6) from overflowing from the bottom of the first umbrella cover (321), thereby preventing the furnace ash on the fixed bottom plate (31) from being blown up; A sawtooth-shaped carbon-moving plate (329) is evenly and fixedly connected to the outer wall of the first umbrella cover (321).

2. The side suction gasifier according to claim 1, characterized in that: The side walls of the inner sleeve (21) and the outer sleeve (22) are both provided with cavities, and liquid medium is provided in the cavities.

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