CN112029535B

CN112029535B - Method for producing fuel gas by using biomass material

Info

Publication number: CN112029535B
Application number: CN202010803741.9A
Authority: CN
Inventors: 李军
Original assignee: Foshan Oken Technology Co ltd
Current assignee: Foshan Oken Technology Co.,Ltd.
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-07-30
Anticipated expiration: 2040-08-11
Also published as: CN112029535A

Abstract

The invention provides a method for producing fuel gas by using biomass materials, which is completed by a device for producing fuel gas by using biomass materials, and solves the problems that dust accumulated in a furnace is easy to bring dust in the process of producing fuel gas in the combustion process of biomass particles, so that the fuel gas contains excessive impurities, the combustion speed of the biomass particles is easy to influence, and when the fuel gas in the furnace cannot be discharged in time, the dust is easy to back mix, so that the quality of the fuel gas is influenced. According to the invention, the funnel-shaped reducing box is fixedly butted at the upper end of the combustion furnace, and the inner end of the feeding pipe is correspondingly arranged at the narrowest position in the middle of the reducing box, so that biomass materials can fall to the middle position to be fully combusted after entering the combustion furnace, the phenomenon that the biomass materials are accumulated to fall to be insufficiently combusted is avoided, smoke and gas can be separated by virtue of the inclined plane due to the reducing, the gas rises, and the smoke and dust falls back along the inclined plane.

Description

Method for producing fuel gas by using biomass material

Technical Field

The invention relates to the technical field of biomass combustion, in particular to a method for producing fuel gas by using biomass materials.

Background

Most of biomass granular fuels are blocky fuels produced by processing stem crops, peanut shells, barks, sawdust and solid wastes (furfural residues, edible fungus residues and the like), are renewable energy sources, have low cost and can replace coal as energy sources for life and production. Therefore, the biomass fuel is popular with the broad users.

The device for producing the fuel gas by using the biomass material is characterized by being formed by serially connecting a gasification furnace (1), a dust removal tank (2), a drying tank (3), a decoking tank (4), a fan (5) and a gas storage tank (6) through a pipeline, wherein a jacket is arranged on the gasification furnace (1), a feed hopper (11) is arranged at the top of the gasification furnace (1), a furnace bridge (17) is arranged below a combustion area, a dust removal cylinder (15) and a baffle (16) are arranged below the furnace bridge (17), the fan (5) is a roots fan, provides power for the combustible gas of the whole system, extracts the combustible gas from the gasification furnace (1), removes dust, removes water and tar through the dust removal tank (2), the drying tank (3) and the decoking tank (4), and pressurizes and sends the combustible gas into the gas storage tank (6) for storage. The utility model has high thermal efficiency, saves energy by more than 30 percent, and is an ideal stove using biomass fuel.

The dust accumulated in the combustion process of the biomass particles is easy to bring dust in the process of generating fuel gas in the furnace, so that the fuel gas contains excessive impurities, the generation speed of the fuel gas is easy to be influenced by the combustion speed of the biomass particles, and when the fuel gas in the furnace cannot be discharged in time, the dust is easy to back mix, so that the quality of the fuel gas is influenced.

In view of the above, the present invention provides a method for producing fuel gas from biomass material, which is improved based on the existing methods, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a method for producing fuel gas by using biomass materials, which aims to solve the problems that dust is accumulated in a furnace to easily bring dust in the process of generating the fuel gas in the combustion process of biomass particles, so that the fuel gas contains excessive impurities, the combustion speed of the biomass particles is easily influenced due to the generation speed of the fuel gas, and when the fuel gas in the furnace cannot be discharged in time, the dust is easily mixed back, so that the quality of the fuel gas is influenced.

The purpose and the effect of the method for producing the fuel gas by using the biomass material are achieved by the following specific technical means:

a method for producing a fuel gas from a biomass material, which is performed by an apparatus for producing a fuel gas from a biomass material, comprising the steps of:

s1 biomass particles enter from a feeding hole, a spiral material conveying paddle rotationally connected with a feeding motor is installed in a feeding pipe, a feeding hole with a wide top and a narrow bottom is fixedly installed at the top of the outer end of the feeding pipe, the materials can be continuously fed through the feeding motor and the material conveying paddle, a tongue plate is fixedly arranged on the lower half section of the port of the material conveying paddle in a combustion furnace in an extending mode, semicircular overflow grooves are formed in the front end edge and the rear end edge of the tongue plate respectively, and when the material conveying paddle in the feeding pipe conveys the materials to the tongue plate, the materials can be scattered from the overflow grooves to a bearing disc below the tongue plate so as to be sufficiently combusted;

s2 after the biomass particles are burnt, as the upper end of the burning furnace is fixedly butted with a funnel-shaped reducing box, the inner end of the feeding pipe is correspondingly arranged at the narrowest position in the middle of the reducing box, so that biomass materials can fall to the middle position to be fully combusted after entering the combustion furnace, the phenomenon that the biomass materials are accumulated to fall and are insufficiently combusted is avoided, the diameter change can separate smoke dust and fuel gas by means of the inclined surface, the fuel gas rises, the smoke dust falls back along the inclined surface, the upper end of the gas supply mechanism is fixedly sealed with a gas supply top plate, the middle part of the air supply top plate is vertically and rotatably provided with a rotating shaft, the lower end of the rotating shaft is fixedly provided with fan blades, the lower end of the inner cavity of the air supply mechanism is fixedly provided with a horizontal grid-shaped baffle, the left side wall of the air supply mechanism is vertically provided with an exhaust pipe, after the thermal mass fuel gas is produced, the fan blades can be driven to rotate, and the fuel gas can be quickly conveyed to the outside through the exhaust pipe;

s3, ash deposition generated by combustion enters an ash deposition box, the middle part of the ash discharging mechanism is fixedly provided with two transverse clamping blocks, a vertical stop block is connected between the clamping blocks in a sliding and clamping manner, the side wall of the right end of the stop block is vertically and fixedly provided with two guide posts which are parallel to each other, springs are sleeved on the guide posts, the outer ends of the springs are fixedly arranged on vertical plates at the right ends of the two clamping blocks, the lower end of the ash deposition box can be sealed through the stop block all the time under the action of the springs in a natural state, the stop block is completely matched with the lower end of the ash deposition box under the natural state of the springs because the upper end of the stop block is inserted and connected with the lower end of the ash deposition box in a left-right sliding manner, and when the stop block is pulled to move rightwards, the stop block can move out from the lower part of the ash deposition box, so that the combustion ash in the ash deposition box falls;

the device for producing fuel gas by biomass material comprises a chassis; a vertical combustion furnace is fixedly arranged at the upper end of the bottom frame; the combustion furnace comprises an ash deposition box, a bearing disc and a filter disc, wherein the lower end of the combustion furnace is fixedly butted with the ash deposition box which is in a truncated cone shape and is wide at the upper part and narrow at the lower part, the filter disc in an inverted V shape is fixedly arranged at the box port at the upper end of the ash deposition box, and the bearing disc in a horizontal shape is fixedly arranged at the position, below the igniter, in the inner cavity of the combustion furnace; the right end of the combustion furnace is fixedly butted with a feeding mechanism, and the upper end of the feeding mechanism is vertically communicated with the middle part of the upper end of the combustion furnace; the upper end of the combustion furnace is fixedly butted with an air supply mechanism; the middle part of the lower end of the bottom frame is fixedly provided with an ash discharging mechanism, and the upper end of the ash discharging mechanism is in sliding butt joint with the lower end of the combustion furnace;

the feeding mechanism comprises a feeding motor, a feeding pipe, a feeding hole and a feeding paddle, wherein the feeding motor is fixedly installed at the right end of the feeding mechanism, the feeding pipe is fixedly butted between the left end of the feeding motor and the middle part of the reducing box, the spiral feeding paddle rotationally connected with the feeding motor is installed in the feeding pipe, and the feeding hole which is wide at the top and narrow at the bottom is fixedly installed at the top of the outer end of the feeding pipe;

the air supply mechanism comprises an air supply top plate, an exhaust pipe, a rotating shaft, fan blades and a baffle plate, wherein the upper end of the air supply mechanism is fixedly sealed and covered with the air supply top plate, the rotating shaft is vertically and rotatably arranged in the middle of the air supply top plate, the fan blades are fixedly arranged at the lower end of the rotating shaft, the horizontal grid-shaped baffle plate is fixedly arranged at the lower end of an inner cavity of the air supply mechanism, and the exhaust pipe is vertically arranged in the left side wall of the air supply mechanism;

unload grey mechanism and include fixture block, dog, guide post and spring, the middle part fixed mounting who unloads grey mechanism has two horizontal fixture blocks, and the slip joint has the vertically dog between its fixture block, and perpendicular fixed mounting has two guide posts that are parallel to each other on the right-hand member lateral wall of dog, has cup jointed the spring on the guide post, and the outer end fixed mounting of spring is on the riser of two fixture block right-hand members.

Further, the chassis includes left socle and some firearm, the upper end of the left end side frame of chassis is perpendicular left fixed mounting has the left socle, and fixed mounting has the some firearm that the inner was arranged in the burning furnace on its left socle. The combustion furnace also comprises a reducing box, the upper end of the combustion furnace is fixedly butted with the funnel-shaped reducing box, and the inner end of the feeding pipe is correspondingly arranged at the narrowest position in the middle of the reducing box.

Furthermore, the feeding mechanism comprises a tongue plate and an overflow groove, the lower half section of the port of the conveying paddle in the combustion furnace is fixedly extended and provided with the tongue plate, and the front end edge and the rear end edge of the tongue plate are respectively provided with a semicircular overflow groove. The upper end of the stop block is inserted with the lower end of the dust box in a left-right sliding manner, and the stop block is completely matched with the lower end of the dust box in a natural state of the spring.

Compared with the prior art, the invention has the following beneficial effects:

because the fixed reducing case that has hourglass hopper-shaped that docks in the upper end of burning furnace, and the inner of conveying pipe then corresponds and install in the narrowest department in the middle part of the reducing case, ensures that biomass material can drop and fully burn in middle part position department after getting into the burning furnace, avoids piling up and burning inadequately dropping, and the reducing can be so that smoke and dust and gas with the help of the inclined plane phase separation, the gas rises, and the smoke and dust falls back along the inclined plane.

Because the lower half section of the port part of the material conveying paddle arranged in the combustion furnace is fixedly extended and provided with the tongue plate, the front end edge part and the rear end edge part of the tongue plate are respectively provided with the semicircular overflow grooves, when the material conveying paddle in the feeding pipe conveys materials to the tongue plate, the materials can be scattered from the overflow grooves to the bearing disc below, so that the materials can be fully combusted.

Because the middle part fixed mounting who unloads grey mechanism has two horizontal fixture blocks, the slip joint has perpendicular dog between its fixture block, and perpendicular fixed mounting has two guide posts that are parallel to each other on the right-hand member lateral wall of dog, the spring has been cup jointed on the guide post, the outer end fixed mounting of spring is on the riser of two fixture block right-hand members, under natural state, under the effect of spring, can be all the time sealed through the lower extreme of dog with the deposition case, and the upper end of dog is pegged graft mutually with the lower extreme horizontal slip of deposition case, under the spring natural state, the dog agrees with completely with the lower extreme of deposition case, and when pulling the dog and moving right, can make the dog shift out from the deposition case below, thereby make the burning ash in the deposition case drop.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a front right upper axial view of the present invention.

Fig. 2 is a schematic diagram of the left rear upper axial view structure of the invention.

Fig. 3 is an axial view of the present invention.

Fig. 4 is a partial axial view structural schematic diagram of the feeding mechanism of the invention.

Fig. 5 is a partial half-sectional view of the air supply mechanism of the present invention.

FIG. 6 is a partial axial view of the ash discharge mechanism of the present invention.

FIG. 7 is a schematic view of a portion of the burner of the present invention in perspective.

FIG. 8 is a schematic view of a lower axial view of a portion of the burner of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a chassis; 101. a left bracket; 102. an igniter; 2. a combustion furnace; 201. a reducing box; 202. an ash accumulation box; 203. a carrier tray; 204. a filter tray; 3. a feeding mechanism; 301. a feeding motor; 302. a feed pipe; 303. a feed inlet; 304. a tongue plate; 305. an overflow trough; 306. a material conveying paddle; 4. an air supply mechanism; 401. a gas delivery top plate; 402. an exhaust pipe; 403. a rotating shaft; 404. a fan blade; 405. a baffle plate; 5. an ash discharge mechanism; 501. a clamping block; 502. a stopper; 503. a guide post; 504. a spring.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 8:

the invention provides a method for producing fuel gas by using biomass materials, which is completed by a device for producing fuel gas by using biomass materials and comprises the following steps:

s1 biomass particles enter from a feeding hole 303, a spiral feeding paddle 306 connected with a feeding motor 301 in a rotating mode is installed in a feeding pipe 302, the top of the outer end of the feeding pipe 302 is fixedly provided with the feeding hole 303 with a wide upper part and a narrow lower part, feeding can be continuously carried out through the feeding motor 301 and the feeding paddle 306, the lower half section of the port of the feeding paddle 306 arranged in the combustion furnace 2 is fixedly extended and provided with a tongue plate 304, the edge of the front end and the edge of the rear end of the tongue plate 304 are respectively provided with a semicircular overflow groove 305, and when the feeding paddle 306 in the feeding pipe 302 feeds the materials to the tongue plate 304, the materials can be scattered from the overflow groove 305 to a bearing plate 203 below so as to be combusted fully;

s2 after the biomass particles are burnt, because the upper end of the combustion furnace 2 is fixedly butted with the funnel-shaped reducing box 201, and the inner end of the feeding pipe 302 is correspondingly installed at the narrowest part of the middle part of the reducing box 201, the biomass materials can fall at the middle part to be fully burnt after entering the combustion furnace 2, the falling and insufficient burning can be avoided, smoke dust and gas can be separated by the reducing, the gas rises, the smoke dust falls back along the inclined plane, the upper end of the gas supply mechanism 4 is fixedly sealed with a gas supply top plate 401, the middle part of the gas supply top plate 401 is vertically and rotatably provided with a rotating shaft 403, the lower end of the rotating shaft 403 is fixedly provided with a fan blade 404, the lower end of the inner cavity of the gas supply mechanism 4 is fixedly provided with a horizontal grid-shaped baffle plate 405, an exhaust pipe 402 is vertically installed in the left side wall of the gas supply mechanism 4, and the fan blade 404 can be driven to rotate after the hot gas is produced, meanwhile, the fuel gas can be rapidly sent to the outside through the exhaust pipe 402;

s3, ash deposition generated by combustion enters the ash deposition box 202, the middle part of the ash discharging mechanism 5 is fixedly provided with two transverse clamping blocks 501, a vertical stop block 502 is clamped between the clamping blocks 501 in a sliding manner, two parallel guide posts 503 are vertically and fixedly arranged on the side wall of the right end of the stop block 502, a spring 504 is sleeved on the guide posts 503, the outer end of the spring 504 is fixedly arranged on a vertical plate at the right end of the two clamping blocks 501, under the natural state, the lower end of the ash deposition box 202 can be sealed through the stop block 502 all the time under the action of the spring 504, because the upper end of the stop block 502 is in left-right sliding insertion connection with the lower end of the ash deposition box 202, the stop block 502 is completely fit with the lower end of the ash deposition box 202 under the natural state of the spring 504, and when the stop block 502 is pulled to move to the right, the stop block 502 can be moved out from the lower part of the ash deposition box 202, so that the combustion ash in the ash deposition box 202 falls;

the device for producing fuel gas by biomass material comprises a chassis 1; a vertical combustion furnace 2 is fixedly arranged at the upper end of the bottom frame 1; the combustion furnace 2 comprises an ash deposition box 202, a bearing disc 203 and a filter disc 204, the lower end of the combustion furnace 2 is fixedly butted with the ash deposition box 202 which is in a truncated cone shape and is wide at the upper part and narrow at the lower part, the filter disc 204 in an inverted 'V' shape is fixedly arranged at the box port at the upper end of the ash deposition box 202, and the bearing disc 203 in a horizontal shape is fixedly arranged at the position below the igniter 102 in the inner cavity of the combustion furnace 2; the combustion furnace 2 further comprises a reducing box 201, the funnel-shaped reducing box 201 is fixedly butted at the upper end of the combustion furnace 2, and the inner end of the feeding pipe 302 is correspondingly arranged at the narrowest position in the middle of the reducing box 201, so that biomass materials can fall to the middle position to be fully combusted after entering the combustion furnace 2, insufficient falling and combustion are avoided, smoke dust and gas can be separated by virtue of an inclined plane due to reducing, the gas rises, and the smoke dust falls back along the inclined plane; the right end of the combustion furnace 2 is fixedly butted with a feeding mechanism 3, and the upper end of the feeding mechanism 3 is vertically communicated with the middle part of the upper end of the combustion furnace 2; the feeding mechanism 3 comprises a feeding motor 301, a feeding pipe 302, a feeding hole 303 and a feeding paddle 306, the feeding motor 301 is fixedly installed at the right end of the feeding mechanism 3, the feeding pipe 302 is fixedly butted between the left end of the feeding motor 301 and the middle part of the reducing box 201, the spiral feeding paddle 306 rotationally connected with the feeding motor 301 is installed in the feeding pipe 302, the feeding hole 303 with a wide upper part and a narrow lower part is fixedly installed at the top of the outer end of the feeding pipe 302, and continuous feeding can be realized through the feeding motor 301 and the feeding paddle 306; the upper end of the combustion furnace 2 is fixedly butted with an air supply mechanism 4; the middle part of the lower end of the chassis 1 is fixedly provided with an ash discharging mechanism 5, and the upper end of the ash discharging mechanism 5 is in sliding butt joint with the lower end of the combustion furnace 2.

Wherein, chassis 1 includes left socle 101 and igniter 102, and the upper end of the left end side frame of chassis 1 is vertical left fixed mounting has left socle 101, and the igniter 102 that the inner was arranged in burning furnace 2 is fixed mounting on its left socle 101, convenient operation.

The feeding mechanism 3 includes a tongue plate 304 and an overflow chute 305, the lower half section of the port of the feeding paddle 306 in the combustion furnace 2 is fixedly extended with the tongue plate 304, the front end edge and the rear end edge of the tongue plate 304 are respectively provided with a semicircular overflow chute 305, when the feeding paddle 306 in the feeding pipe 302 sends the material to the tongue plate 304, the material can be scattered from the overflow chute 305 to the lower carrier tray 203, so as to be sufficiently combusted.

The air supply mechanism 4 comprises an air supply top plate 401, an exhaust pipe 402, a rotating shaft 403, fan blades 404 and a baffle 405, the air supply top plate 401 is fixedly sealed at the upper end of the air supply mechanism 4, the rotating shaft 403 is vertically and rotatably mounted in the middle of the air supply top plate 401, the fan blades 404 are fixedly mounted at the lower end of the rotating shaft 403, the horizontal grid-shaped baffle 405 is fixedly mounted at the lower end of the inner cavity of the air supply mechanism 4, the exhaust pipe 402 is vertically mounted in the left side wall of the air supply mechanism 4, after the thermal mass gas is produced, the fan blades 404 can be driven to rotate, and the gas can be rapidly sent to the outside through the exhaust pipe 402.

Wherein, the ash discharging mechanism 5 includes fixture block 501, dog 502, guide post 503 and spring 504, the middle part fixed mounting of ash discharging mechanism 5 has two horizontal fixture blocks 501, the slip joint has vertically dog 502 between its fixture block 501, and vertical fixed mounting has two guide post 503 that are parallel to each other on the right-hand member lateral wall of dog 502, the spring 504 has been cup jointed on the guide post 503, the outer end fixed mounting of spring 504 is on the riser of two fixture blocks 501 right-hand members, under natural state, under the effect of spring 504, can be all the time sealed with the lower extreme of deposition case 202 through dog 502.

The upper end of the stopper 502 is inserted into the lower end of the ash depositing box 202 in a sliding manner, the stopper 502 is completely engaged with the lower end of the ash depositing box 202 in a natural state by the spring 504, and when the stopper 502 is pulled to move to the right, the stopper 502 can be moved out from the lower side of the ash depositing box 202, so that the burning ash in the ash depositing box 202 falls.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A method for producing fuel gas by using biomass materials is characterized in that the method for producing the fuel gas by using the biomass materials is completed by a device for producing the fuel gas by using the biomass materials, and comprises the following steps:

s1: biomass particles enter from a feeding hole (303), a spiral feeding paddle (306) which is rotationally connected with a feeding motor (301) is installed in a feeding pipe (302), the top of the outer end of the feeding pipe (302) is fixedly provided with a feeding hole (303) which is wide at the top and narrow at the bottom, the feeding motor (301) and the feeding paddle (306) can be used for continuously feeding materials, the lower half section of the port part of the feeding paddle (306) arranged in a combustion furnace (2) is fixedly extended and provided with a tongue plate (304), the edge of the front end and the edge of the rear end of the tongue plate (304) are respectively provided with a semicircular overflow groove (305), and when the feeding paddle (306) in the feeding pipe (302) sends the materials to the tongue plate (304), the materials can be scattered from the overflow groove (305) to a lower bearing tray (203) so as to be fully combusted;

s2: after biomass particles are combusted, the upper end of the combustion furnace (2) is fixedly butted with a funnel-shaped reducing box (201), the inner end of the feeding pipe (302) is correspondingly arranged at the narrowest part of the middle part of the reducing box (201), biomass materials are ensured to fall to the middle part of the combustion furnace (2) for sufficient combustion, insufficient combustion is avoided, smoke dust and gas can be separated by virtue of an inclined plane due to the reducing, the gas rises and falls back along the inclined plane, the upper end of the gas supply mechanism (4) is fixedly covered with a gas supply top plate (401), the middle part of the gas supply top plate (401) is vertically and rotatably provided with a rotating shaft (403), the lower end of the rotating shaft (403) is fixedly provided with fan blades (404), the lower end of the inner cavity of the gas supply mechanism (4) is fixedly provided with a horizontal grid-shaped baffle plate (405), and an exhaust pipe (402) is vertically arranged in the left side wall of the gas supply mechanism (4), after the hot mass gas is produced, the fan blades (404) can be driven to rotate, and meanwhile, the gas can be quickly conveyed to the outside through the exhaust pipe (402);

s3: the ash deposition generated by combustion enters the ash deposition box (202), two transverse fixture blocks (501) are fixedly installed in the middle of the ash discharge mechanism (5), a vertical stop block (502) is connected between the fixture blocks (501) in a sliding and clamping mode, two guide columns (503) which are parallel to each other are vertically and fixedly installed on the side wall of the right end of the stop block (502), a spring (504) is sleeved on each guide column (503), the outer end of the spring (504) is fixedly installed on a vertical plate at the right end of the two fixture blocks (501), in a natural state, the lower end of the ash deposition box (202) can be sealed through the stop block (502) all the time under the action of the spring (504), as the upper end of the stop block (502) is inserted and connected with the lower end of the ash deposition box (202) in a left-right sliding mode, the stop block (502) is completely combined with the lower end of the ash deposition box (202) under the natural state, and when the stop block (502) is pulled to move to the right, the stop block (502) can be moved out from the lower part of the ash deposition box (202), thereby causing the combustion ash in the ash accumulation box (202) to drop;

the device for producing fuel gas by biomass material comprises a chassis (1); a vertical combustion furnace (2) is fixedly arranged at the upper end of the bottom frame (1); the combustion furnace (2) comprises an ash deposition box (202), a bearing disc (203) and a filter disc (204), the lower end of the combustion furnace (2) is fixedly butted with the ash deposition box (202) which is in a truncated cone shape and is wide at the top and narrow at the bottom, the filter disc (204) which is in a reversed 'V' shape is fixedly installed at the box port at the upper end of the ash deposition box (202), and the bearing disc (203) which is in a horizontal shape is fixedly installed at the position below the igniter (102) in the inner cavity of the combustion furnace (2); the right end of the reducing box (201) is fixedly butted with a feeding mechanism (3); the upper end of the combustion furnace (2) is fixedly butted with an air supply mechanism (4); the middle part of the lower end of the bottom frame (1) is fixedly provided with an ash discharging mechanism (5), and the upper end of the ash discharging mechanism (5) is in sliding butt joint with the lower end of the combustion furnace (2);

the ash discharging mechanism (5) comprises clamping blocks (501), a stop block (502), guide posts (503) and a spring (504), wherein the middle part of the ash discharging mechanism (5) is fixedly provided with two transverse clamping blocks (501), the vertical stop block (502) is connected between the clamping blocks (501) in a sliding and clamping manner, the side wall of the right end of the stop block (502) is vertically and fixedly provided with two guide posts (503) which are parallel to each other, the guide posts (503) are sleeved with the spring (504), and the outer end of the spring (504) is fixedly arranged on vertical plates at the right ends of the two clamping blocks (501);

the feeding mechanism (3) comprises a feeding motor (301), a feeding pipe (302), a feeding hole (303) and a feeding paddle (306), the feeding motor (301) is fixedly installed at the right end of the feeding mechanism (3), the feeding pipe (302) is fixedly butted between the left end of the feeding motor (301) and the middle part of the reducing box (201), the spiral feeding paddle (306) which is rotatably connected with the feeding motor (301) is installed in the feeding pipe (302), and the feeding hole (303) which is wide at the top and narrow at the bottom is fixedly installed at the top of the outer end of the feeding pipe (302);

air feed mechanism (4) including supplying air roof (401), blast pipe (402), rotation axis (403), flabellum (404) and baffle (405), the fixed closing cap in upper end of air feed mechanism (4) has air feed roof (401), and the middle part of air feed roof (401) is perpendicular to be rotated and is installed rotation axis (403), and rotation axis (403) lower extreme fixed mounting has flabellum (404), and the lower extreme fixed mounting of air feed mechanism (4) inner chamber has horizontal grid-like baffle (405), and vertical installation has blast pipe (402) in the left side wall of air feed mechanism (4).

2. The method for producing a fuel gas from biomass material according to claim 1, wherein: the bottom frame (1) comprises a left support (101) and an igniter (102), the left support (101) is vertically and fixedly installed on the upper end of the left end side frame of the bottom frame (1) leftwards, and the igniter (102) with the inner end arranged in the combustion furnace (2) is fixedly installed on the left support (101).