CN112197261A - Biomass fuel gasification furnace structure - Google Patents

Abstract

The invention belongs to the technical field of biomass fuels, and particularly relates to a biomass fuel gasification furnace structure which comprises a gasification furnace body, a support frame, a fuel input mechanism, a fuel gas conveying mechanism, a burner and a combustion ash discharge mechanism; the outer side of the gasification furnace body is oppositely provided with a supporting part supported on the supporting frame; the burning ash discharging mechanism comprises: the device comprises a base, a rotating mechanism, an ash basin and a heat-resistant grate; the rotary mechanism is arranged on the base, the ash basin is arranged on the rotating part of the rotary mechanism, the ash basin is provided with a cavity with an upward opening, the heat-resistant fire grate is fixedly arranged in the cavity, and an ash groove is formed between the heat-resistant fire grate and the inner wall of the ash basin; the heat-resistant fire grate is internally provided with a sealed cavity which is communicated with a pipeline of the blower; the upper end of the heat-resistant grate is provided with a conical surface, and the conical surface is provided with a plurality of vent holes communicated with the cavity; the lower end of the gasification furnace body extends into the ash groove, the bottom end of the gasification furnace body is higher than the bottom of the ash groove, the heat-resistant grate extends into the gasification furnace, and the lower end of the gasification furnace body is provided with an ash discharging mechanism for discharging ash in the ash groove.

Description

Biomass fuel gasification furnace structure

Technical Field

The invention belongs to the technical field of bio-to-fuel, and particularly relates to a biomass fuel gasification furnace structure.

Background

The biomass fuel is prepared by stacking the biomass fuel in a gasification furnace, burning and cracking the fuel into combustible gas, discharging the combustible gas into a combustion furnace for combustion, and discharging ash slag after the combustion and cracking out of a furnace body. Chinese patent publication No. CN206219512U discloses a side-draft biomass gasifier with bottom automatic slag removal, wherein the disclosed technical scheme is that ash is discharged out of the gasifier body through a spiral discharging mechanism; when the ash is discharged through the spiral discharging mechanism, the spiral rod is always located at a fixed position, so that only the ash at the fixed position can be discharged, the peripheral ash is difficult to discharge, and when the ash is discharged through the spiral rod to the ash tray at the fixed position all the time, incompletely cracked fuel is easily discharged, and the incomplete cracking of the fuel is caused.

Disclosure of Invention

The invention aims to provide a biomass fuel gasification furnace structure, which aims to solve the problems that ash is difficult to discharge from the existing gasification furnace and fuels which are not cracked sufficiently are discharged.

In order to achieve the above purpose, the biomass fuel gasification furnace structure provided by the embodiment of the invention comprises a gasification furnace body, a support frame, a fuel input mechanism, a fuel gas conveying mechanism, a combustor and a combustion ash discharge mechanism; the outer side of the gasification furnace body is oppositely provided with a supporting part supported on the supporting frame, and the bottom of the gasification furnace body is of an open structure; the fuel input mechanism is connected on the top end of the gasification furnace body, and one end of the fuel gas conveying mechanism is connected with the other end of the burner and is connected to the top of the gasification furnace body and communicated with the inside of the gasification furnace body.

The burning ash discharging mechanism comprises: the device comprises a base, a rotating mechanism, an ash basin and a heat-resistant grate; the rotary mechanism is arranged on the base, the ash basin is arranged on a rotating part of the rotary mechanism, the ash basin is provided with a cavity with an upward opening, the heat-resistant fire grate is fixedly arranged in the cavity, and an ash groove is formed between the heat-resistant fire grate and the inner wall of the ash basin; the heat-resistant fire grate is internally provided with a sealed cavity, and the cavity is communicated with a blower pipeline; the upper end of the heat-resistant fire grate is provided with a conical surface, and the conical surface is provided with a plurality of vent holes communicated with the cavity; the lower end of the gasification furnace body extends into the ash groove, the bottom end of the gasification furnace body is higher than the bottom of the ash groove, the heat-resistant grate extends into the gasification furnace, and the lower end of the gasification furnace body is provided with an ash discharging mechanism for discharging ash in the ash groove.

Furthermore, one side of the ash basin is also provided with a slag chute for receiving ash slag discharged by the ash discharging mechanism.

Further, the ash discharging mechanism comprises an ash guide plate obliquely arranged on the outer side wall of the lower end of the gasification furnace body, the lower end of the ash guide plate is a small end, the upper end of the ash guide plate is a large end, and the small end uniformly extends along the large end; the outer side wall of the large end extends to the opening of the ash tray, and the slag chute is located on one side of the large end.

Further, the ash discharging mechanism also comprises a plurality of ash scrapers arranged at the bottom of the gasification furnace body; the ash scraping knife comprises a connecting part and an ash scraping part, the connecting part is connected with the gasification furnace body, and the ash scraping part obliquely and upwards extends into the bottom of the gasification furnace body.

The connecting device further comprises a support, a sealing groove and a connecting pipe, wherein the sealing groove is formed in the support; the bottom of the sealing groove is provided with a through hole, the connecting pipe penetrates through the through hole and is in sealing connection with the through hole, the upper end of the connecting pipe extends into the sealing groove, and the other end of the connecting pipe is connected with the blower pipeline; the bottom of the heat-resistant fire grate is provided with an air pipe extending downwards, the air pipe extends into the sealing groove, and the upper end of the connecting pipe extends into the air pipe; the sealing groove is used for storing sealing liquid, and the air pipe extends into the liquid surface.

Furthermore, the upper end and the lower end of the heat-resistant grate are both in a conical structure, the lower end of the heat-resistant grate is provided with a support cylinder extending downwards, and the bottom end of the support cylinder is connected to the bottom of the cavity in a sealing manner.

Furthermore, a protective cover plate corresponding to the opening part of the vent hole is also arranged on the conical surface of the heat-resistant grate; the protective cover plate is provided with two side plates which are triangular structures, one end of each side plate and one end of each protective cover plate are welded with the heat-resistant grate, and the protective cover plates and the two side plates and the heat-resistant grate form an inclined downward ventilation opening.

Furthermore, the outer edge of the heat-resistant fire grate is also provided with a plurality of ash pressing knives which are arranged in an up-and-down inclined manner and used for scraping ash at the upper part of the heat-resistant fire grate and extruding the ash downwards.

Further, the rotating mechanism comprises a mounting seat, a rotating track, a rotating seat, a motor, a driving gear and a driven gear; the installation seat and the motor are arranged on the base, the rotating track is arranged on the installation seat, the rotating seat is arranged on the rotating track, and the ash basin is arranged on the rotating seat; the driving gear is arranged on a rotating shaft of the motor, and the driven gear is sleeved on the outer circle of the rotating seat and meshed with the driving gear.

Further, the structure of ash basin is loudspeaker form, still set up a plurality of bellyings of inside arch along the inner wall in the ash tray, the bellyings follow the oral area of ash tray extends to the bottom.

Further, the fuel input mechanism comprises a screw conveyor, a first hopper, a conveying belt, a second hopper and a material guide hopper; the spiral conveyor is arranged at the top end of the gasification furnace body, the first hopper is arranged at a feed inlet of the spiral conveyor, the conveying belt is arranged in an upper and lower inclined manner, the upper end of the conveying belt extends to the upper end of the first hopper, the lower end of the conveying belt is supported on the ground, and the second hopper is arranged above the lower end of the conveying belt; the material guide hopper is arranged at a discharge port of the spiral conveyor, the large end of the material guide hopper extends into the gasification furnace body, and a fuel gas storage cavity is formed between the material guide hopper and the upper end of the gasification furnace body.

Furthermore, the lower end of the gasification furnace body is also provided with an air supply mechanism extending into the furnace body and used for conveying air into the furnace body.

Furthermore, the outer side of the gasification furnace body is also provided with a plurality of groups of explosion-proof devices communicated into the furnace body.

Further, the explosion-proof device comprises a water storage barrel and an explosion-proof pipe; the gasification furnace body is provided with a through hole and a supporting part, the water storage barrel is supported on the supporting part, the upper end of the explosion-proof pipe extends into the through hole, and the lower end of the explosion-proof pipe extends into the water storage barrel; and water is arranged in the water storage barrel and used for sealing the lower end of the explosion-proof pipe.

Furthermore, the number of the explosion-proof devices arranged on the outer side of the gasification furnace body is multiple, and a communication pipe is communicated with the bottom ends of the water storage barrels of the explosion-proof devices.

Furthermore, each water storage bucket is connected with a water replenishing pipe.

Furthermore, a drain pipe is arranged at the bottom of the water storage barrel, and a valve is arranged on the drain pipe; a steam pipe is also arranged in each water storage barrel, and the steam pipe extends into the bottom of the water storage barrel.

Further, the gasification furnace body comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved on the outer cylinder and forms a closed cavity with the inner cylinder, and a water inlet pipe and a water outlet pipe are arranged on the opposite side of the outer cylinder.

Furthermore, electromagnetic valves are arranged on the pipelines of the cavity and the blower.

Furthermore, a plurality of wear-resistant strips are arranged at the lower end of the gasification furnace body along the inner wall, and the upper ends of the wear-resistant strips are not lower than the lowest end of the upper conical surface of the heat-resistant grate.

One or more technical schemes in the biomass fuel gasification furnace structure provided by the embodiment of the invention at least have the following technical effects:

1. firstly, adding a certain amount of water into an ash groove, and filling burnt ash into the ash groove and a heat-resistant grate through a fuel input mechanism; then the fuel input mechanism inputs the fuel into the gasification furnace and accumulates on the ash residue of the heat-resistant grate and the ash chute, and the fuel input mechanism continuously fills the fuel into the furnace body; through fuel combustion, generated gas and heat are input into the combustor through the gas conveying mechanism for combustion. The rotating mechanism drives the ash tray and the heat-resisting grate to rotate while the fuel at the bottom is combusted and cracked, so that the ash discharging mechanism can discharge ash falling into the ash groove out of the ash tray. When ash in the ash groove is discharged, the ash at the bottom of the gasification furnace body falls into the ash groove along the heat-resistant grate, and the rotary conveying of the rotary mechanism can be adjusted with higher combustion efficiency, so that the ash which is burnt out at the bottommost part can be discharged all the time. The unburned fuel is effectively prevented from being discharged. And moreover, the contact area between the heat-resistant grate and the ash slag can realize the gradual discharge of the bottom burnt ash slag, and the burnt ash slag is prevented from being accumulated in the furnace body.

2. The burnt-out ash slag is discharged after passing through water in the ash groove, so that the ash slag is put out a fire and cooled, and safety accidents caused by discharging the slag with sparks or high temperature are avoided.

3. The bottom of the gasification furnace body is sealed by adding water into the ash tray, so that the water and ash in the ash tray can be overflowed to avoid harm to the furnace body under the condition of flash explosion in the furnace body.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a structural diagram of a biomass fuel gasifier according to an embodiment of the present invention.

Fig. 2 is a structural diagram of a gasification furnace body of a biomass fuel gasification furnace structure according to an embodiment of the present invention.

Fig. 3 is a structural diagram of a combustion ash discharge mechanism in a biomass fuel gasifier structure according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along line I-I of fig. 3.

Fig. 5 is a top view of a combustion ash discharging mechanism of a biomass fuel gasifier structure according to an embodiment of the present invention.

Fig. 6 is an enlarged view of a portion a of fig. 4.

Fig. 7 is a structural diagram of an ash pressing knife in the structure of the biomass fuel gasification furnace according to the embodiment of the invention.

Fig. 8 is a structural diagram of an explosion-proof mechanism of a biomass fuel gasification furnace according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, referring to fig. 1 to 5, a biomass fuel gasification furnace structure,

comprises a gasification furnace body 100, a support frame (not shown in the figure), a fuel input mechanism 200, a fuel gas conveying mechanism 300, a combustor 400 and a combustion ash discharging mechanism 500. The outer side of the gasification furnace body 100 is oppositely provided with a supporting part 101 supported on the supporting frame, and the bottom of the gasification furnace body is of an open structure; the fuel input mechanism 200 is connected to the top end of the gasification furnace body 100, and one end of the fuel gas conveying mechanism 300 is connected to the burner 400, and the other end of the fuel gas conveying mechanism is connected to the top of the gasification furnace body 100 and communicated with the inside of the gasification furnace body 100. The fuel input mechanism 200 conveys the fuel into the gasification furnace body 100 for combustion and cracking, the heat and gas generated by the combustion and cracking are conveyed to the combustor 400 through the fuel gas conveying mechanism 300 for combustion again, and the ash formed by the fuel cracking is discharged through the combustion ash discharging mechanism.

Referring to fig. 3 to 5, the combustion ash discharge mechanism 500 includes a base 510, a rotation mechanism 520, an ash pan 530, and a heat-resistant grate 540. The rotating mechanism 200 is arranged on the base 100, the ash basin 530 is arranged on the rotating part of the rotating mechanism 520, the ash basin 530 is provided with a cavity with an upward opening, the heat-resistant fire grate 540 is fixedly arranged in the cavity, and an ash groove 501 is formed between the heat-resistant fire grate 540 and the inner wall of the ash basin 530. The heat-resistant fire grate 540 is arranged in a sealed cavity which is communicated with a pipeline of the blower 600. The upper end of the heat-resistant fire grate 540 is provided with a conical surface, and the conical surface is provided with a plurality of vent holes 541 communicated with the cavity. The lower end of the furnace body of the gasification furnace body 100 extends into the ash chute 501, the bottom end of the gasification furnace body 100 is higher than the bottom of the ash chute 501, and the heat-resistant grate 540 extends into the gasification furnace; the lower end of the gasification furnace body 100 is provided with an ash discharge mechanism for discharging ash in the ash tank 501. Specifically, a certain amount of water is added into the ash tank 501, and the burnt ash is filled into the ash tank 501 and the heat-resistant grate 540 through the fuel input mechanism 200; then the fuel input mechanism 200 inputs the fuel into the gasification furnace 100 and is accumulated on the ash slag of the heat-resisting grate 540 and the ash groove 501, and the fuel input mechanism 200 continuously fills the fuel into the furnace body; by the combustion of the fuel, the generated gas and heat are input into the combustor 400 through the gas delivery mechanism 300 to be combusted. The rotation mechanism 520 drives the ash tray 530 and the heat-resistant grate 540 to rotate while the fuel at the bottom is burned and cracked, so that the ash discharging mechanism can discharge the ash dropped into the ash chute 501 out of the ash tray 530. When the ash in the ash chute 501 is discharged, the ash at the bottom of the gasification furnace body 100 drops into the ash chute along the heat-resistant grate 540, and therefore, the ash burnt at the bottom is discharged all the time. The unburned fuel is effectively prevented from being discharged. The burnt-out ash slag is discharged after passing through the water in the ash groove 501, so that the ash slag is extinguished and cooled, and safety accidents caused by discharging the slag with sparks or high temperature are avoided. And the bottom of the gasification furnace body 100 is sealed by adding water into the ash tray 501, so that water and ash in the ash tray can be overflowed when flash explosion occurs in the furnace body, and the furnace body is prevented from being damaged.

Further, referring to fig. 3 to 5, a slag chute 531 is further disposed on one side of the ash basin 530; used for receiving the ash slag discharged by the ash discharging mechanism.

Further, referring to fig. 1 to 5, the ash discharging mechanism includes an ash guide plate 710 obliquely disposed on the outer side wall of the lower end of the gasifier body 100, the lower end of the ash guide plate 710 is a small end, the upper end is a large end, and the small end extends uniformly along the large end. The outer side wall of the large end extends to the opening of the ash pan 530, and the slag chute 531 is positioned at one side of the large end. In this embodiment, when the rotating mechanism 520 drives the ash tray 530 to rotate, ash in the ash tray 501 is relatively discharged out of the ash tray 501 along the ash guide plate 710, and falls onto the slag chute 531, and the ash is discharged from the slag chute 531.

Further, referring to fig. 4 and 5, the ash discharging mechanism further includes a plurality of ash scrapers 720 disposed at the bottom of the gasification furnace body 100; the ash scraping knife 720 comprises a connecting part 721 and an ash scraping part 722, the connecting part 721 is connected with the gasification furnace body 100, and the ash scraping part 722 obliquely and upwardly extends into the bottom of the gasification furnace body 100. In this embodiment, the ash scraping part 722 extends into the gasification furnace body 100, so that the ash scraping part 722 is located between the outer wall of the heat-resistant grate 540 and the inner wall of the gasification furnace body 100, and therefore, when the ash tray 530 rotates, the ash scraping part 722 scrapes the ash at the bottom of the gasification furnace body 100 outwards, and the ash is discharged through the ash guiding plate 710.

Further, referring to fig. 4, the biomass fuel gasification furnace further includes a bracket 800, a sealing groove 810, and a connection pipe 820. The sealing groove 810 is formed on the bracket 800. A through hole (not shown in the drawing) is formed at the bottom of the sealing groove 810, the connecting pipe 820 penetrates through the through hole and is hermetically connected with the through hole, the upper end of the connecting pipe 820 extends into the sealing groove 810, and the other end of the connecting pipe 820 is connected with the blower 600 through a pipeline; the bottom of the heat-resistant grate 540 is provided with a gas pipe 542 extending downwards, the gas pipe extends into the sealing groove 810, and the upper end of the connecting pipe 820 extends into the gas pipe 542; the sealing groove 810 is used for storing sealing liquid, and the gas pipe 542 extends into the liquid surface. In this embodiment, a certain amount of water is added into the sealing groove 810, and the air pipe 542 can extend below the liquid level, so that the connection position of the air pipe 542 and the sealing groove 810 is sealed by the water, when air is blown into the cavity by the blower 600, the air pipe 542 can seal the air flow, and the air pipe 542 can rotate along with the heat-resistant grate 540.

Further, referring to fig. 4, the upper end and the lower end of the heat-resistant grate 540 are both in a conical structure, the lower end of the heat-resistant grate 540 is provided with a support tube 543 extending downwards, and the bottom end of the support tube 410 is hermetically connected to the bottom of the cavity. In this embodiment, the supporting tube 543 supports the heat-resistant grate 540 and forms the ash chute 501 with the inner wall of the ash tray 530.

Further, referring to fig. 3 to 6, a protective cover plate 544 corresponding to the opening of the vent 541 is further disposed on the conical surface of the heat-resistant grate 540; the protective cover plate 544 is provided with two side plates 545, and the side plates 545 are in a triangular structure. One end of the side plate 545 and the protective cover 544 is welded to the heat-resistant grate 540, and the protective cover 544 forms a ventilation opening 546 inclined downward with the side plates 545 and the heat-resistant grate 540. In this embodiment, the protective cover 544 is disposed at the opening of the vent 546, so that ash is placed and falls into the cavity through the vent 541. The vent 546 is formed to be inclined downward, so that the ash can be prevented from blocking the vent 541, and smooth air outlet can be ensured.

Further, referring to fig. 5, a plurality of ash pressing knives 547 are further provided at the outer edge of the heat-resistant grate 540, and the ash pressing knives 547 are obliquely arranged up and down to scrape off ash from the upper portion of the heat-resistant grate 540 and press the ash downward. In this embodiment, by providing the dust pressing knife 547, the ash at the bottom can be easily scraped off, and the ash is continuously pressed and extruded by the dust pressing knife 547, so that the ash is conveniently pressed downward and discharged from the mouth of the ash tray 530.

Further, referring to fig. 3 and 4, the rotating mechanism 520 includes a mounting seat 521, a rotating track 522, a rotating seat 523, a motor 524, a driving gear 525 and a driven gear 526. The mounting seat 521 and the motor 524 are disposed on the supporting seat 510, the rotating track 522 is disposed on the base 521, the rotating seat 523 is disposed on the rotating track 522, and the ash basin 530 is disposed on the rotating seat 523; the driving gear 525 is disposed on the rotating shaft of the motor 524, and the driven gear 526 is sleeved on the outer circle of the rotating seat 523 and engaged with the driving gear 525. In this embodiment, the motor 524 drives the driving gear 525 to rotate, and further drives the driven gear 526 to rotate, so as to drive the ash tray 530 and the refractory grate 540 to rotate.

Further, referring to fig. 4 and 5, the ash pan 530 is in a trumpet shape, a plurality of inwardly protruding protrusions 532 are further arranged along the inner wall of the ash pan 530, and the protrusions 532 extend from the mouth to the bottom of the ash pan. In this embodiment, the protrusion 532 is additionally arranged on the inner wall of the ash tray 530, so that water in ash can be conveniently discharged back to the bottom of the ash groove 531 from the gap formed between the protrusion 532 and the protrusion 532, and the moisture carried by the discharged ash is small.

Further, the protrusion 532 is a circular tube welded to the inner wall of the ash tray 530.

Further, referring to fig. 1, the fuel input mechanism 200 includes a screw conveyor 201, a first hopper 202, a conveyor belt 203, a second hopper 204, and a guide hopper 205. The spiral conveyor 201 is arranged at the top end of the gasification furnace body 100, the first hopper 202 is arranged at the feed inlet of the spiral conveyor 201, the conveyer belt 203 is arranged in an up-and-down inclined manner, the upper end of the conveyer belt 203 extends to the upper end of the first hopper 202, the lower end of the conveyer belt is supported on the ground, and the second hopper 204 is arranged above the lower end of the conveyer belt 203. The material guide hopper 205 is arranged at the discharge hole of the spiral conveyor 201, the large end of the material guide hopper 205 extends into the gasification furnace body 100, and the material guide hopper 205 and the upper end of the gasification furnace body 1 form a fuel gas storage cavity 102. In this embodiment, the fuel can be added into the second hopper 204, the fuel in the second hopper 204 drops onto the conveyer belt 203, the fuel is conveyed into the first hopper 202 through the conveyer belt 203, the fuel in the first hopper 202 is extruded into the gasification furnace body 100 by the screw conveyor 201, and the heat-resistant grate 540 is stacked, and the material guide hopper 205 extends into the gasification furnace body 100, so that the space for gas emission caused by the fact that the furnace body is completely filled with the fuel can be avoided.

Further, referring to fig. 1 and 2, the lower end of the gasification furnace body 100 is further provided with an air supply mechanism 103 extending into the furnace body for supplying air into the furnace body. This embodiment, through air supply mechanism 103 to the internal input air of furnace, and then increase the air capacity in the furnace, guarantee the fuel ability burning pyrolysis on upper strata for the efficiency of fuel pyrolysis.

Further, referring to fig. 2, an explosion-proof device 110 connected to the inside of the furnace body is further provided outside the gasification furnace body 100. In this embodiment, in the process of combustion and gasification of the fuel in the gasification furnace body 100, when the inner wall of the furnace body is subjected to flash explosion, the explosion-proof device 110 is arranged, so that the internal pressure can be buffered, and the problem of explosion due to overhigh pressure in the furnace body can be prevented.

Further, referring to fig. 2 and 8, the explosion-proof device 110 includes a water storage bucket 111 and an explosion-proof pipe 112; a through hole (not shown in the drawing) and a supporting part 104 are arranged on the gasification furnace body 100, the water storage barrel 111 is supported on the supporting part 104, the upper end of the explosion-proof pipe 112 extends into the through hole, and the lower end of the explosion-proof pipe extends into the water storage barrel 111; water is provided in the water storage tub 111 for sealing the lower end of the explosion-proof pipe 112. In this embodiment, when the furnace body is subjected to flash explosion, the impact of the explosion is discharged through the explosion-proof tube 112, so as to protect the furnace body.

Further, the explosion-proof devices 110 disposed outside the gasification furnace body 100 are in multiple groups, specifically 4 groups, and are uniformly distributed. A communication pipe 113 communicates with the bottom end of the water storage tub 111 of each explosion-proof device 110. In this embodiment, the 4 water storage tanks 111 are connected by the connection pipe 113 to form a connector, so that the water levels of the respective water storage tanks 111 can be kept consistent, and after water is added, the water can be added to the 4 water storage tanks 111 at the same time, and when water loss is caused by flash explosion, the water can be supplemented together.

Further, each of the water storage tanks 111 is connected to a water replenishing pipe 114. In this embodiment, the water storage barrel 111 is added with a water replenishing pipe 114 to ensure that the explosion-proof pipe 112 is always sealed by water.

Further, a drain pipe 115 is arranged at the bottom of the water storage barrel 111, and a valve is arranged on the drain pipe 115. A steam pipe 116 is further arranged in each water storage barrel 111, the steam pipe 116 extends into the bottom of the water storage barrel 111, the steam pipe 116 is communicated with a steam system, when water in the water storage barrel 111 needs to be discharged, a valve is opened to discharge the water, high-pressure steam is injected into the steam pipe 116 through the steam system, and tar deposited at the bottom of the water storage barrel 111 is melted and cleaned.

Further, the gasification furnace body 100 includes an inner cylinder and an outer cylinder, the outer cylinder is sleeved on the outer cylinder and forms a closed cavity with the inner cylinder, and a water inlet pipe and a water outlet pipe are arranged at opposite sides of the outer cylinder. The water entering the closed cavity is added through the gasification furnace body 100 and then discharged into a steam system, so that the full utilization of energy is realized.

Further, referring to fig. 1 to 4, a solenoid valve 601 is further provided on a duct between the cavity and the blower 600. In this embodiment, when the blower stops operating, the electromagnetic valve 601 is rapidly closed to prevent the gas and sparks in the gasifier body 100 from entering the duct of the blower 600 to cause combustion.

Further, a plurality of wear-resistant strips are arranged at the lower end of the gasification furnace body 100 along the inner wall, and the upper ends of the wear-resistant strips are not lower than the top end of the heat-resistant grate.

Further, in this embodiment, the lower end of the gasification furnace body 100 is provided with a plurality of wear-resistant strips 104 along the inner wall, and the upper ends of the wear-resistant strips 104 are not lower than the lowest end of the upper conical surface of the heat-resistant grate 540. The abrasion between the ash and the inner wall of the furnace body can be reduced through the wear-resistant strips 104, and the service life of the furnace body is prolonged. In addition, the heat-resistant grate 540 presses the ash together with the wear-resistant strips 140 while the heat-resistant grate 540 rotates, so that large blocks of ash are crushed for easy discharge.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (20)

1. A biomass fuel gasification furnace structure is characterized by comprising a gasification furnace body, a support frame, a fuel input mechanism, a fuel gas conveying mechanism, a combustor and a combustion ash discharge mechanism; the outer side of the gasification furnace body is oppositely provided with a supporting part supported on the supporting frame, and the bottom of the gasification furnace body is of an open structure; the fuel input mechanism is connected to the top end of the gasification furnace body, one end of the fuel gas conveying mechanism is connected with the burner, and the other end of the fuel gas conveying mechanism is connected to the top of the gasification furnace body and communicated with the inside of the gasification furnace body;

the burning ash discharging mechanism comprises: the device comprises a base, a rotating mechanism, an ash basin and a heat-resistant grate; the rotary mechanism is arranged on the base, the ash basin is arranged on a rotating part of the rotary mechanism, the ash basin is provided with a cavity with an upward opening, the heat-resistant fire grate is fixedly arranged in the cavity, and an ash groove is formed between the heat-resistant fire grate and the inner wall of the ash basin; the heat-resistant fire grate is internally provided with a sealed cavity, and the cavity is communicated with a blower pipeline; the upper end of the heat-resistant fire grate is provided with a conical surface, and the conical surface is provided with a plurality of vent holes communicated with the cavity; the lower end of the gasification furnace body extends into the ash groove, the bottom end of the gasification furnace body is higher than the bottom of the ash groove, the heat-resistant grate extends into the gasification furnace, and the lower end of the gasification furnace body is provided with an ash discharging mechanism for discharging ash in the ash groove.

2. The biomass fuel gasifier structure of claim 1, wherein: one side of the ash basin is also provided with a slag chute for receiving ash discharged by the ash discharging mechanism.

3. The biomass fuel gasifier structure of claim 2, wherein: the ash discharging mechanism comprises an ash guide plate obliquely arranged on the outer side wall of the lower end of the gasification furnace body, the lower end of the ash guide plate is a small end, the upper end of the ash guide plate is a large end, and the small end uniformly extends along the large end; the outer side wall of the large end extends to the opening of the ash tray, and the slag chute is located on one side of the large end.

4. The biomass fuel gasifier structure of claim 3, wherein: the ash discharging mechanism also comprises a plurality of ash scrapers arranged at the bottom of the gasification furnace body; the ash scraping knife comprises a connecting part and an ash scraping part, the connecting part is connected with the gasification furnace body, and the ash scraping part obliquely and upwards extends into the bottom of the gasification furnace body.

5. The biomass fuel gasifier structure according to any one of claims 1 to 4, wherein: the sealing device also comprises a bracket, a sealing groove and a connecting pipe, wherein the sealing groove is arranged on the bracket; the bottom of the sealing groove is provided with a through hole, the connecting pipe penetrates through the through hole and is in sealing connection with the through hole, the upper end of the connecting pipe extends into the sealing groove, and the other end of the connecting pipe is connected with the blower pipeline; the bottom of the heat-resistant fire grate is provided with an air pipe extending downwards, the air pipe extends into the sealing groove, and the upper end of the connecting pipe extends into the air pipe; the sealing groove is used for storing sealing liquid, and the air pipe extends into the liquid surface.

6. The biomass fuel gasification furnace structure according to any one of claims 1 to 4, wherein the upper end and the lower end of the heat-resistant grate are both conical structures, the lower end of the heat-resistant grate is provided with a downwardly extending support cylinder, and the bottom end of the support cylinder is hermetically connected to the bottom of the cavity.

7. The biomass fuel gasifier structure according to any one of claims 1 to 4, wherein: the conical surface of the heat-resistant fire grate is also provided with a protective cover plate positioned at the opening part corresponding to the vent hole; the protective cover plate is provided with two side plates which are triangular structures, one end of each side plate and one end of each protective cover plate are welded with the heat-resistant grate, and the protective cover plates and the two side plates and the heat-resistant grate form an inclined downward ventilation opening.

8. The biomass fuel gasifier structure according to any one of claims 1 to 4, wherein: the outer edge of the heat-resistant grate is also provided with a plurality of ash pressing knives which are obliquely arranged up and down and used for scraping ash at the upper part of the heat-resistant grate and extruding the ash downwards.

9. The biomass fuel gasifier structure of claim 1, wherein: the rotating mechanism comprises a mounting seat, a rotating track, a rotating seat, a motor, a driving gear and a driven gear; the installation seat and the motor are arranged on the base, the rotating track is arranged on the installation seat, the rotating seat is arranged on the rotating track, and the ash basin is arranged on the rotating seat; the driving gear is arranged on a rotating shaft of the motor, and the driven gear is sleeved on the outer circle of the rotating seat and meshed with the driving gear.

10. The biomass fuel gasifier structure of claim 1, wherein: the structure of ash basin is loudspeaker form, still set up a plurality of bellied bellyings inwards along the inner wall in the ash tray, the bellying is followed the oral area of ash tray extends to the bottom.

11. The biomass fuel gasifier structure of claim 1, wherein: the fuel input mechanism comprises a screw conveyor, a first hopper, a conveying belt, a second hopper and a material guide hopper; the spiral conveyor is arranged at the top end of the gasification furnace body, the first hopper is arranged at a feed inlet of the spiral conveyor, the conveying belt is arranged in an upper and lower inclined manner, the upper end of the conveying belt extends to the upper end of the first hopper, the lower end of the conveying belt is supported on the ground, and the second hopper is arranged above the lower end of the conveying belt; the material guide hopper is arranged at a discharge port of the spiral conveyor, the large end of the material guide hopper extends into the gasification furnace body, and a fuel gas storage cavity is formed between the material guide hopper and the upper end of the gasification furnace body.

12. The biomass fuel gasifier structure of claim 1, wherein: the lower end of the gasification furnace body is also provided with an air supply mechanism extending into the furnace body and used for conveying air into the furnace body.

13. The biomass fuel gasifier structure of claim 1, wherein: and a plurality of groups of explosion-proof devices communicated into the furnace body are also arranged on the outer side of the gasification furnace body.

14. The biomass fuel gasifier structure of claim 13, wherein: the explosion-proof device comprises a water storage barrel and an explosion-proof pipe; the gasification furnace body is provided with a through hole and a supporting part, the water storage barrel is supported on the supporting part, the upper end of the explosion-proof pipe extends into the through hole, and the lower end of the explosion-proof pipe extends into the water storage barrel; and water is arranged in the water storage barrel and used for sealing the lower end of the explosion-proof pipe.

15. The biomass fuel gasifier structure of claim 14, wherein: the number of the explosion-proof devices arranged on the outer side of the gasification furnace body is multiple, and a communication pipe is communicated with the bottom ends of the water storage barrels of the explosion-proof devices.

16. The biomass fuel gasifier structure of claim 15, wherein: each water storage barrel is connected with a water replenishing pipe.

17. The biomass fuel gasifier structure according to any one of claims 14 to 16, wherein: a drain pipe is arranged at the bottom of the water storage barrel, and a valve is arranged on the drain pipe; a steam pipe is also arranged in each water storage barrel, and the steam pipe extends into the bottom of the water storage barrel.

18. The biomass fuel gasifier structure of claim 1, wherein: the gasification furnace body comprises an inner cylinder and an outer cylinder, the outer cylinder is sleeved on the outer cylinder and forms a closed cavity with the inner cylinder, and a water inlet pipe and a water outlet pipe are arranged on the opposite side of the outer cylinder.

19. The biomass fuel gasifier structure of claim 1, wherein: and electromagnetic valves are arranged on the cavity and the pipeline of the blower.

20. The biomass fuel gasifier structure of claim 1, wherein: the lower end of the gasification furnace body is provided with a plurality of wear-resistant strips along the inner wall, and the upper ends of the wear-resistant strips are not lower than the lowest end of the upper conical surface of the heat-resistant grate.

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