CN114958436B

CN114958436B - Water cooling device of gasification furnace with header combined with membrane type wall

Info

Publication number: CN114958436B
Application number: CN202210379767.4A
Authority: CN
Inventors: 刘同保; 杨志伟; 李奕福; 王治纲; 刘竹晴
Original assignee: Ganzhou Yichen Hongyan Energy Technology Co ltd
Current assignee: Ganzhou Yichen Hongyan Energy Technology Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2023-03-14
Anticipated expiration: 2042-04-12
Also published as: CN114958436A

Abstract

The invention relates to the technical field of energy production, and discloses a water cooling device of a gasification furnace with a header combined with a membrane wall, which comprises a furnace body, a grate, a feeding pipe and an air outlet pipe, wherein an upper header is fixedly arranged at the upper position of the furnace body, a rotating wheel is movably arranged in the inner cavity of the upper header, an elastic membrane is fixedly arranged at the bottom of the cavity of the upper header, a spring I is fixedly arranged on the inner side surface of the elastic membrane, and the other end of the spring I is connected with the lower surface of the inner cavity of the upper header. According to the invention, through the arrangement of the stirring part and the rotating body, gas enters the rotating groove in a reciprocating manner, so that the rotating body drives the stirring part to stir materials on the fire grate in a reciprocating manner, the materials accumulated on the fire grate are continuously spread in the combustion process, the probability that the ash layer at the outer side blocks the materials at the inner side to effectively contact air is further reduced, meanwhile, through the action, the gap between the materials is increased, the probability that the materials effectively contact air is further increased, the materials are fully combusted, and the gasification rate is further improved.

Description

Water cooling device of gasification furnace with header combined with membrane type wall

Technical Field

The invention relates to the technical field of energy production, in particular to a water cooling device of a gasification furnace with a header combined with a membrane wall.

Background

The gasification furnace is an energy production device for converting biomass fuel into gas fuel, and the working principle of the gasification furnace is that the biomass fuel and a gasification agent generate a series of chemical reactions through high temperature, so that required fuel gas is obtained.

The existing gasification furnace is operated, biomass fuel is placed on the surface of a fire grate at the bottom position in the furnace, meanwhile, outside air enters from filter holes of the fire grate and contacts with the biomass fuel, then, the biomass fuel is ignited through an igniter, so that the fuel generates a series of chemical reactions in the furnace and generates fuel gas, wherein a gasification layer (reduction layer) is arranged in an area above the fuel in the furnace, substances generated by fuel combustion can perform reduction reactions in the area, but in the process, the biomass fuel is accumulated on the surface of the fire grate, and then the material pile can only gradually combust from the outer side position to the inner side position when combusting, so that an ash layer generated by the outer side fuel after combusting can block the inner side fuel to effectively contact air, further the full combustion of the inner side fuel is influenced, and finally the amount of the biomass fuel converted into the fuel gas is reduced, and the gasification rate is reduced.

Disclosure of Invention

Aiming at the defects of the existing gasification furnace in the use process in the background technology, the invention provides a water cooling device of the gasification furnace with a header combined with a membrane wall, which has the advantages of increasing the probability of effective contact of fuel at the inner side position with air and improving the gasification rate, and solves the technical problems in the background technology.

The invention provides the following technical scheme: the utility model provides a gasifier water cooling plant of collection case combination diaphragm type wall, includes furnace body, grate, inlet pipe and outlet duct, the top position fixed mounting of furnace body has last collection case, movable mounting has the runner in going up the collection case inner chamber, the bottom fixed mounting of going up the collection case cavity has the elastic membrane, the medial surface fixed mounting of elastic membrane has spring I, the other end and the lower surface of last collection case inner chamber of spring I are connected, the medial surface fixed mounting of elastic membrane has the lifter, the lower extreme of lifter runs through the furnace body, the last fixed surface of grate installs the base, the lift chamber has been seted up to the inside of base, the lower extreme and the lift chamber of lifter form the swing joint, it has gas to fill in the cavity in lift chamber, the turn has been seted up to the inside of base, the turn is two liang of overlapping settings, the turn divide into inside groove and outer groove, movable mounting has the body in the inside, the inside of base has seted up the gas port, the lift chamber passes through gas port and communicates with the inside groove, fixed mounting has the connecting rod on the lateral surface of turn, connecting rod and outer groove form movable connection with the outer groove, the other end of connecting rod stretches out the outer groove, the other end of connecting rod is installed and is dialled the shifting piece.

Preferably, the membrane wall is fixedly mounted on the outer side of the furnace body, the lower header is fixedly mounted in the furnace body, the lower header is communicated with the upper header through the membrane wall cooling pipe, and cooling water is filled in the membrane wall, the upper header and the lower header.

Preferably, the two sides of the poking piece are both provided with sliding grooves, sliding blocks are movably mounted in the sliding grooves, and poking pieces are movably mounted between the sliding blocks in the adjacent poking pieces.

Preferably, the both sides of connecting rod all fixed mounting have the closing plate, the closing plate forms swing joint with the outer tank, smooth chamber has been seted up to the inside of base, the closing plate forms swing joint with smooth chamber.

Preferably, an air cavity is formed in the sealing plate, an air plate is movably mounted in the air cavity, a spring II is mounted in the air cavity, an impact block is movably mounted in the base, a spring III is mounted at the outer side of the impact block, and the impact block can push the air plate to extrude the spring II.

Preferably, the cavity of the air cavity is filled with air, the connecting rod is internally provided with a main air hole, the connecting rod and the sealing plate are internally provided with a branch air hole together, and the air cavity is communicated with the main air hole through the branch air hole.

Preferably, a lifting cavity is formed in the toggle piece, the lifting cavity is divided into an upper cavity and a lower cavity by a connecting rod, the connecting rod is movably connected with the lower cavity, and the main air hole is communicated with the lower cavity.

The invention has the following beneficial effects:

1. according to the invention, through the arrangement of the stirring piece and the rotating body, the gas enters the rotating groove in a reciprocating manner, so that the rotating body drives the stirring piece to stir the materials on the grate in a reciprocating manner, the materials accumulated on the grate are continuously spread in the combustion process, the probability that the ash layer at the outer side blocks the materials at the inner side to effectively contact air is reduced, meanwhile, through the action, the gap between the materials is increased, the probability that the materials effectively contact air is further increased, the materials are fully combusted, and the gasification rate is increased.

2. According to the invention, through the arrangement of the stirring piece and the stirring piece, in the reciprocating swing process of the stirring piece, the stirring piece can move back and forth at the central position and the outer side position, so that the materials are further uniformly spread, the materials are fully combusted, meanwhile, the stirring piece can drive part of the inner side and the outer side to exchange positions, so that the combustion can be carried out inside and outside the stockpile, the quantity of the combusted materials is increased in unit time, and further, the substances in the gasification layer can absorb more heat in unit time, so that the reduction reaction of the gasification layer is accelerated, and the gas generation speed is increased.

3. According to the invention, through the arrangement of the closing plate, the impact block and the air plate, in the swinging process of the stirring piece, the closing plate can be driven to swing, so that the impact block can impact the air plate in a reciprocating manner, the stirring piece is vibrated, and materials in contact with the stirring piece and the stirring piece are dispersed through vibration, so that the gap among the materials is further increased, and the gasification rate is improved.

4. According to the invention, through the arrangement of the stirring piece and the connecting rod, when the impact block impacts the air plate, the air plate can extrude part of air in the air cavity into the lifting cavity, so that the stirring piece moves downwards and impacts the fire grate, the fire grate vibrates, and further, the slag blocked at the filter hole of the fire grate is separated from the filter hole, so that air can effectively enter the furnace, the material is fully combusted, the gasification rate of the material is improved, and meanwhile, through the arrangement of the header and the membrane wall, the slag generated in the furnace can be cooled when contacting the furnace wall, so that the slag is not easy to adhere to the furnace wall, and the probability of blocking the furnace cavity by the slag is reduced.

Drawings

FIG. 1 is a schematic view of the entire structure of the present invention;

FIG. 2 is a schematic top sectional view of a furnace body according to the present invention;

FIG. 3 is a schematic view of a structural lift cavity of the present invention;

FIG. 4 is a schematic top cross-sectional view of a structural pedestal according to the present invention;

FIG. 5 is a schematic top cross-sectional view of a structural closure plate of the present invention.

In the figure: 1. a furnace body; 2. a membrane wall; 3. an upper header; 4. a lower header; 5. a grate; 6. a rotating wheel; 7. an elastic film; 8. a lifting rod; 9. a base; 10. a lifting cavity; 11. rotating the groove; 12. a swivel; 13. a gas port; 14. a connecting rod; 15. a toggle piece; 16. a chute; 17. a slider; 18. a toggle sheet; 19. a closing plate; 20. a slide chamber; 21. an air cavity; 22. an air plate; 23. a main air hole; 24. branch air holes; 25. a lift cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1, a water cooling device of a gasification furnace with a header combined with a membrane wall comprises a furnace body 1, a membrane wall 2 is fixedly arranged on the outer side of the furnace body 1, a feeding pipe is arranged on the left side of the furnace body 1, an air outlet pipe is arranged on the right side of the furnace body 1, an upper header 3 is fixedly arranged on the upper side of the furnace body 1, the upper header 3 is communicated with the upper end of a membrane wall 2 cooling pipe, a lower header 4 is fixedly arranged on the lower side of the inner part of the furnace body 1, the lower header 4 is communicated with the lower end of the membrane wall 2 cooling pipe, cooling water is filled in the membrane wall 2, the upper header 3 and the lower header 4, a fire grate 5 is fixedly arranged on the lower side of the inner cavity of the furnace body 1, a rotating wheel 6 is rotatably arranged in the inner cavity of the upper header 3, an elastic membrane 7 is fixedly arranged at the bottom of the cavity of the upper header 3, a spring I is fixedly arranged on the inner side surface of the elastic membrane 7, the other end of the spring I is connected with the lower surface of the inner cavity of the upper header 3, a lifting rod 8 is fixedly arranged in the middle of the inner side surface of the elastic membrane 7, the lower end of the lifting rod 8 penetrates through the furnace body 1, a base 9 is fixedly arranged in the center of the upper surface of the fire grate 5, a lifting cavity 10 is arranged in the center of the base 9, the lower end of the lifting rod 8 is in sealing sliding connection with the lifting cavity 10, gas is filled in a cavity below the end head of the lower end of the lifting rod 8 in the lifting cavity 10, a rotary groove 11 is arranged in the base 9 and outside the lifting cavity 10, the rotary grooves 11 are arranged in a pairwise overlapping manner, the rotary grooves 11 are divided into an inner groove and an outer groove, a rotating body 12 is arranged in the inner groove in a sealing sliding manner, a gas port 13 is arranged in the base 9 and between the lifting cavity 10 and the rotary groove 11, one side of the gas port 13 is communicated with the lifting cavity 10, the other side of the gas port 13 is communicated with the inner groove, a connecting rod 14 is fixedly arranged on the outer side surface of the rotating body 12, the connecting rod 14 forms a sliding connection with the outer groove, the other end of the connecting rod 14 extends out of the outer groove, the other end of the connecting rod 14 is provided with a stirring piece 15, when the rotating wheel 6 rotates at a slow speed, the blades of the rotating wheel intermittently extrude the elastic membrane 7 and the spring I, so that the elastic membrane 7 drives the lifting rod 8 to move downwards, the lifting rod 8 extrudes the gas in the lifting cavity 10, the gas enters the inner groove through the gas port 13 and pushes the rotating body 12 to deflect, the connecting rod 14 and the stirring piece 15 swing along with the rotating body, then, when the blades of the rotating wheel 6 leave the elastic membrane 7, the spring I releases the elastic force, the lifting rod 8 moves upwards, the gas in the inner groove returns to the lifting cavity 10, the stirring piece 15 resets, and the reciprocating is carried out, and then the material on the surface of the grate 5 is shifted to and fro by the shifting piece 15, so that the piled material is not continuously spread in the combustion process, further the blocking of the ash layer formed after the combustion of the material on the outer side to the material on the inner side is reduced, the probability of the material on the inner side to be in effective contact with air is increased, and simultaneously, through the action, the gap between the materials is increased, and further the probability of the material on being in effective contact with air is increased, so that the material is fully combusted, thereby the gasification rate is improved, in addition, through the arrangement of the upper header box 3, the lower header box 4 and the membrane type wall 2, when the furnace wall is contacted by the furnace slag generated in the furnace, the furnace slag can be cooled, and further the furnace slag is not easy to adhere to the furnace wall, and the probability of the furnace slag blocking the furnace chamber is reduced.

Referring to fig. 2, sliding grooves 16 are formed in both sides of a stirring member 15, sliding blocks 17 are movably clamped in the sliding grooves 16, stirring pieces 18 are rotatably mounted on the sliding blocks 17, the other sides of the stirring pieces 18 are rotatably connected with the sliding blocks 17 oppositely arranged inside the adjacent stirring members 15, in the reciprocating swinging process of the stirring members 15, the distance between the adjacent stirring members 15 can be changed, when the distance is increased, the stirring pieces 18 can be pulled by the adjacent stirring members 15 and move inwards, when the distance is reduced, the stirring pieces 18 can be extruded by the adjacent stirring members 15, the stirring pieces 18 are deformed and move outwards, through the process, the materials are enabled to be spread evenly, the materials are enabled to be sufficiently combusted, meanwhile, the stirring pieces 18 can drive material exchange positions at partial inner side positions and outer side positions, combustion can be enabled to be conducted inside and outside of the material pile, the quantity of the combusted materials is increased in unit time, and the materials located in a gasification layer can absorb more heat in unit time, so that the reduction reaction of the gasification layer is accelerated, and the generation speed of fuel gas is increased.

Referring to fig. 4, the two sides of the connecting rod 14 are both fixedly provided with the closing plate 19, the closing plate 19 and the outer groove form a closed sliding connection, the two sides of the outer groove inside the base 9 are respectively provided with the sliding cavities 20, the closing plate 19 and the sliding cavities 20 form a sliding connection, and the outer groove is further closed by the closing plate 19, so that the material is prevented from entering the outer groove and affecting the rotating distance of the rotating body 12.

Referring to fig. 5, an air cavity 21 is equidistantly formed in the closing plate 19, an air plate 22 is hermetically and slidably mounted in the air cavity 21, a spring ii is mounted at the inner side of the air plate 22 in the air cavity 21, an impact block 26 is slidably mounted at the outer side of the sliding cavity 20 in the base 9, a spring iii is mounted at the outer side of the impact block 26, the impact block 26 can push the air plate 22 to extrude the spring ii, the closing plate 19 can be synchronously driven to move in the swinging process of the connecting rod 14, so that the impact block 26 intermittently impacts the air plate 22, the air plate 22 passes through the connecting rod 14 and the closing plate 19, the stirring member 15 is driven to vibrate, and through vibration, the materials contacting with the stirring member 15 and the stirring member 18 are dispersed, so that the gap between the materials is further increased, and the gasification rate is increased.

The cavity in the air cavity 21, which is located at the inner side of the air plate 22, is filled with air, the connecting rod 14 is internally provided with a main air hole 23, the connecting rod 14 and the closing plate 19 are internally provided with a branch air hole 24 together, one side of the branch air hole 24 is communicated with the air cavity 21, the other side of the branch air hole 24 is communicated with the main air hole 23, and in the process that the air plate 22 is impacted, the air plate 22 can extrude the air in the air cavity 21 and the spring II, so that part of the air in the air cavity 21 is discharged through the branch air hole 24 and the main air hole 23, and further the subsequent functions are conveniently realized.

Referring to fig. 3, a lifting cavity 25 is formed inside the toggle member 15, the lifting cavity 25 is movably connected with the connecting rod 14, the lifting cavity 25 is divided into an upper cavity and a lower cavity by the connecting rod 14, the connecting rod 14 and the lower cavity form a sealing sliding connection, the other side of the main air hole 23 is communicated with the lower cavity, gas discharged from the main air hole 23 enters the lower cavity, the toggle member 15 moves downwards relative to the connecting rod 14 and impacts the grate 5, the grate 5 vibrates, and slag blocked at the filter hole of the grate 5 is separated from the filter hole, so that air effectively enters the furnace, the material is fully combusted, and the gasification rate of the material is improved.

The use method (working principle) of the invention is as follows:

when the furnace works, firstly, cooling water is introduced into the upper collecting box 3, the membrane type wall 2 and the lower collecting box 4, meanwhile, materials are conveyed to the surface of the fire grate 5 from the feeding pipe, then, the materials piled on the surface of the fire grate 5 are ignited through the igniter, and outside air is enabled to contact the materials through the filtering holes in the fire grate 5, so that the materials are combusted and carry out a series of chemical reactions, finally, fuel gas is generated, and the fuel gas is discharged to the subsequent correlation mechanism from the gas outlet pipe, in the process, the slag generated after the materials are combusted can contact the inner wall of the furnace body 1, further, the heat in the slag can be transferred to the membrane type wall 2, the slag is cooled and leaves the furnace body 1 through the filtering holes in the fire grate 5, in the process, the power source drives the rotating wheel 6 to rotate at a slow speed, so that the rotating wheel 6 intermittently extrudes the elastic membrane 7 and the spring I, and the lifting rod 8 moves downwards, the air in the lifting cavity 10 enters the inner groove through the air port 13 by the lifting rod 8 moving downwards, then, after the rotating wheel 6 leaves the elastic membrane 7, the spring I drives the elastic membrane 7 and the lifting rod 8 to reset, and further the air in the inner groove returns to the lifting cavity 10, through the process, the rotating body 12 drives the connecting rod 14, the closing plate 19 and the stirring piece 15 to swing back and forth, so that the material on the surface of the fire grate 5 is spread out, when the stirring piece 15 swings, the adjacent stirring piece 18 is extruded or pulled, so that the stirring piece 18 moves from outside to inside or from inside to outside, and the material is further spread out, in the swinging process of the closing plate 19, the air cavity 21 inside can alternately contact the impact block 26, so that the impact block 26 intermittently impacts the air plate 22 in the air cavity 21, the air plate 22 enables part of the air in the air cavity 21 to pass through the branch air hole 24 and the main air hole 23, and further to be repeatedly extruded into or drawn out of the lower cavity of the lifting cavity 25, the toggle piece 15 is caused to move downwards in a reciprocating way and impact the fire grate 5, so that the probability of blocking the filter holes of the fire grate 5 by the slag is reduced, and the work cycle is realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a collection case combines gasifier water cooling plant of diaphragm type wall, includes furnace body (1), grate (5), inlet pipe and outlet duct, its characterized in that: the furnace comprises a furnace body (1), an upper header (3) is fixedly arranged at the upper position of the furnace body (1), a rotating wheel (6) is movably arranged in the inner cavity of the upper header (3), an elastic membrane (7) is fixedly arranged at the bottom of the cavity of the upper header (3), a spring I is fixedly arranged on the inner side surface of the elastic membrane (7), the other end of the spring I is connected with the lower surface of the inner cavity of the upper header (3), a lifting rod (8) is fixedly arranged on the inner side surface of the elastic membrane (7), the lower end of the lifting rod (8) penetrates through the furnace body (1), a base (9) is fixedly arranged on the upper surface of a grate (5), a lifting cavity (10) is arranged in the base (9), the lower end of the lifting rod (8) is movably connected with the lifting cavity (10), gas is filled in the cavity of the lifting cavity (10), a rotating groove (11) is arranged in the base (9), the rotating groove (11) is arranged in a pairwise overlapping manner, the rotating groove (11) is divided into an inner groove and an outer groove, a rotating gas port (12) is movably arranged in the inner groove (12), the base (9) is communicated with the outer groove (14) through a connecting rod (13), and a rotating gas port (14) is connected with the outer groove (14), the other end of the connecting rod (14) extends out of the outer groove, and a toggle piece (15) is installed at the other end of the connecting rod (14);

sliding grooves (16) are formed in two sides of the poking piece (15), sliding blocks (17) are movably mounted in the sliding grooves (16), and poking pieces (18) are movably mounted between the sliding blocks (17) in the adjacent two poking pieces (15) in a combined mode.

2. The water-cooling device of a gasification furnace with a header combined with a membrane wall as claimed in claim 1, wherein: the furnace body is characterized in that a membrane type wall (2) is fixedly mounted on the outer side of the furnace body (1), a lower header (4) is fixedly mounted inside the furnace body (1), the lower header (4) is communicated with an upper header (3) through a membrane type wall (2) cooling pipe, and cooling water is filled into the membrane type wall (2), the upper header (3) and the lower header (4).

3. The water-cooling device of a gasification furnace with a header combined with a membrane wall as claimed in claim 1, wherein: the equal fixed mounting in both sides of connecting rod (14) has closing plate (19), closing plate (19) and outer groove form swing joint, smooth chamber (20) have been seted up to the inside of base (9), closing plate (19) and smooth chamber (20) form swing joint.

4. A header-membrane wall-integrated gasifier water-cooling apparatus as claimed in claim 3, wherein: an air cavity (21) is formed in the closing plate (19), an air plate (22) is movably mounted in the air cavity (21), a spring II is mounted in the air cavity (21), an impact block (26) is movably mounted in the base (9), a spring III is mounted at the outer side position of the impact block (26), and the impact block (26) can push the air plate (22) to extrude the spring II.

5. The water-cooling device of a gasification furnace with a header combined with a membrane wall as claimed in claim 4, wherein: the air cavity (21) is filled with air, a main air hole (23) is formed in the connecting rod (14), branch air holes (24) are formed in the connecting rod (14) and the sealing plate (19) together, and the air cavity (21) is communicated with the main air hole (23) through the branch air holes (24).

6. The water cooling apparatus for a gasification furnace having a header combined with a membrane wall as claimed in claim 5, wherein: a lifting cavity (25) is formed in the toggle piece (15), the lifting cavity (25) is divided into an upper cavity and a lower cavity by a connecting rod (14), the connecting rod (14) is movably connected with the lower cavity, and the main air hole (23) is communicated with the lower cavity.