CN211227039U

CN211227039U - Cracking gasification furnace

Info

Publication number: CN211227039U
Application number: CN201922191157.8U
Authority: CN
Inventors: 李玮; 严鑫; 孙岐君; 徐涛; 滕安超
Original assignee: China City Green Construction Technology Co ltd
Current assignee: China City Green Construction Technology Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-11
Anticipated expiration: 2029-12-09

Abstract

The application discloses pyrolysis gasifier includes: a base; the furnace body is fixed on the base; the ash tray is arranged at the bottom of the furnace body and can rotate relative to the furnace body; the furnace bar is located the furnace body lower part, and is fixed with the ash pan, and the furnace bar lower part has the round slag carriage apron all around or bottom all around, has broken sediment tooth on the slag carriage apron, and the pivot is installed at the furnace bar top, and the lateral wall of pivot is provided with a plurality of homocline teeth around self axis, and the ash pan is used for loading the coolant liquid, and the liquid level of coolant liquid is higher than the lower terminal surface of furnace body. The ash tray of this application schizolysis gasifier drives the grate and rotates together when rotating, drives the slag carriage apron promptly and rotates together, because be provided with broken sediment tooth on the slag carriage apron, like this at rotatory in-process, can be effectual with the slag-bonding behind the gasification of mixed rubbish pyrolysis break open the slag that forms the slag in small pieces and get into in the coolant liquid of ash tray. The cracking gasification furnace is particularly suitable for mixed garbage with high viscosity, such as solid slag separated from catering, kitchen waste and illegal cooking oil.

Description

Cracking gasification furnace

Technical Field

The utility model relates to a refuse treatment field, concretely relates to pyrolysis gasification stove.

Background

In the prior art, the garbage is treated by the cracking gasification furnace, the traditional cracking gasification furnace cannot well treat the garbage with large viscosity, such as solid slag separated from catering, kitchen waste and illegal cooking oil, the viscosity is large, the solid slag is easy to adhere together, the stability of cracking gasification or incineration can be influenced, and the slag are easy to slag.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to above-mentioned problem, a pyrolysis gasification stove is proposed.

The utility model adopts the following technical scheme:

a pyrolysis gasifier comprising:

a base;

the furnace body is fixed on the base through a bracket;

the ash tray is arranged at the bottom of the furnace body and can rotate relative to the furnace body, and the lower end of the furnace body is positioned in the ash tray;

the grate is located the furnace body lower part, and with the ash tray is fixed, and the grate lower part has the round slag carriage apron all around or bottom all around, broken sediment tooth has on the slag carriage apron, the pivot is installed at the grate top, the lateral wall of pivot is provided with a plurality of homogenization teeth around self axis, the ash tray is used for loading the coolant liquid, the lower terminal surface of furnace body is exceeded to the liquid level of coolant liquid.

The ash tray of the pyrolysis gasifier drives the grate to rotate together when rotating, namely, the slag slide carriage is driven to rotate together, and because the slag breaking teeth are arranged on the slag slide carriage, the slag which is formed by slagging after the high-temperature pyrolysis gasification of the mixed garbage can be effectively broken to form fine slag to enter the cooling liquid of the ash tray in the rotating process. The cracking gasification furnace is particularly suitable for mixed garbage with high viscosity, such as solid slag separated from catering, kitchen waste and illegal cooking oil.

In practice, the cooling liquid may be water.

In one embodiment of the present invention, the ash removing device further comprises an ash removing knife fixed on the outer side wall of the furnace body, wherein the lower end of the ash removing knife extends to the bottom wall of the ash tray, and the side end of the ash removing knife is adjacent to the inner side wall of the ash tray; the furnace body includes inside wall, lateral wall and sets up the water jacket between inner wall and outer wall, the lower part of the inside wall of furnace body is provided with the flame retardant coating.

The ash sweeping plate is fixed with the furnace body, so that when the whole ash tray rotates, the ash sweeping plate is static and further moves relatively, the ash sweeping function can be realized, and cooled ash is swept out. The furnace body is provided with the water jacket and the fire-resistant layer, so that the furnace body can be effectively protected.

In one embodiment of the present invention, the upper portion of the sidewall of the furnace body has a feeding hole; the upper port of the furnace body is rotatably provided with a rotating frame, the feed inlet is aligned to the rotating frame, and the rotating frame is provided with a material shifting tooth around the axis of the rotating frame.

Thereby it is rotatory to set up can the pivoted swivel mount and can drive and dial the material tooth, and the material gets into the back from the feed inlet like this, can be dialled the material tooth and carry out the homocline earlier, then burn again, so can more abundant burning. In practical application, the feeding mode of the feeding hole is preferably spiral feeding.

In one embodiment of the present invention, the rotating frame includes a body of an inverted cone contacting with the material, the material-shifting teeth are disposed on the body, and the material-shifting teeth are inclined and downwardly disposed.

The material shifting teeth have downward inclination angles, so that the material shifting teeth are favorable for the material blanking and homogenizing process, can effectively break up mixed garbage with high viscosity, and can help reliably blank garbage in the cracking gasification process without collapsing, and the structure can effectively homogenize and blank the garbage.

In one embodiment of the utility model, the material-homogenizing teeth have multiple layers, the material-homogenizing teeth on each layer are uniformly distributed around the axis of the rotating shaft, and the material-homogenizing teeth on two adjacent layers are arranged in a staggered way;

the material shifting teeth are provided with a plurality of groups which are distributed up and down, the material shifting teeth of each group are uniformly distributed around the axis of the furnace body, and the distance between the material shifting teeth of the upper group and the inner side wall of the furnace body is smaller than the distance between the material shifting teeth of the lower group and the inner side wall of the furnace body.

In practical use, the material homogenizing teeth are preferably two layers, 3 teeth are preferably uniformly distributed on each layer, and the tooth spacing is 120 degrees, so that material homogenizing can be carried out more reliably, and more sufficient combustion can be realized.

In practical use, the rotating frame is cast from high-temperature-resistant materials.

In one embodiment of the present invention, the outer sidewall of the upper end of the furnace body has a supporting plate connected to the bracket, the pyrolysis gasification furnace further includes an upper and a lower sets of driving structures, the driving structure located above is used for driving the rotation of the rotating frame, and the driving structure located below is used for driving the rotation of the ash tray;

the drive structures each include:

the first annular blocking block of the driving structure positioned above is fixed with the supporting plate, and the first annular blocking block of the driving structure positioned below is fixed with the base;

the second annular blocking block is positioned on the inner side corresponding to the first annular blocking block, the first annular blocking block and the second annular blocking block have the same axis, and form an annular space, wherein the second annular blocking block of the driving structure positioned above is fixed with the rotating frame, and the second annular blocking block of the driving structure positioned below is fixed with the ash tray;

a plurality of rolling members installed in the annular space, wherein the rolling member of the driving structure positioned above is used for supporting the rotating frame, and the rolling member of the driving structure positioned below is used for supporting the ash tray;

the ratchet wheel of the driving structure positioned above is arranged on the periphery of the rotating frame, and the ratchet wheel of the driving structure positioned below is arranged on the periphery of the ash tray;

and the driving mechanism is used for driving the corresponding ratchet wheel to rotate.

The traditional ash tray and grate of the cracking gasification furnace are arranged in the furnace through a rotating shaft and a bearing, the temperature in the furnace is high, the rotating shaft is easy to deform or the bearing is easy to damage, and the whole ash discharging system is easy to damage. In addition, the diameter of the whole cracking furnace is large, the requirements on the shaft and the bearing are high by adopting a whole shaft rotating mode, the damage is easy to cause in the using process, and the manufacturing and maintenance cost is high. And swivel mount and ash tray all are located on the rolling member that corresponds in this application, and the second annular card keeps off in the inboard that first annular card kept off, has restricted swivel mount and ash tray through first annular card fender to swivel mount and ash tray can be reliable do rotary motion. The whole ash tray and the rotating frame rotate without shafts and bearings, the maintenance difficulty and the manufacturing cost are greatly reduced, the structure is simple and reliable, and the practicability is good.

In practice, the rolling member is in the shape of a sphere or a sphere-like shape.

In practice, the driving mechanism may preferably be hydraulically driven, and other electric liquid, electric drive, gear drive, sprocket drive, etc. may be used.

The driving mechanism drives the ratchet wheel to drive the whole rotating frame to rotate, and the rotating frame and the material shifting teeth rotate, so that the processes of scattering, homogenizing and blanking materials entering the furnace body are realized.

In one embodiment of the present invention, a water seal groove is disposed on the supporting plate, and the lower end of the first annular blocking block of the driving structure above extends into the water seal groove.

Sealing liquid (such as water) is added into the water seal tank, and the upper end of the furnace body can realize liquid seal through the structure of the rotating frame and the water seal tank, namely the top of the furnace body can be sealed.

In one embodiment of the present invention, the driving mechanism includes:

the telescopic element is rotatably arranged on the outer side of the ratchet wheel and comprises a telescopic push rod, one end of the push rod is used for being matched with teeth of the ratchet wheel when the push rod extends out to push the ratchet wheel to rotate, and a matching shaft is rotatably arranged at one end, matched with the ratchet wheel, of the push rod;

the directional guide rail of the driving structure positioned above is relatively fixed with the supporting plate, and the directional guide rail of the driving structure positioned below is relatively fixed with the base;

the guide rod is arranged on the directional guide rail in a sliding mode, one end, close to the ratchet wheel, of the guide rod is hinged to the push rod, and the guide rod is used for changing the angle of the push rod when the push rod stretches.

The telescopic element pushes the push rod to move, the push rod is in contact with the ratchet wheel and pushes the whole ratchet wheel to rotate under the guiding action of the guide rod, after the position of the telescopic element reaches a designated position, the ratchet wheel just pushes one tooth, at the moment, the telescopic element is controlled to gradually retract the push rod, at the moment, under the action of the guide rod, the push rod is enabled to do not only straight line retraction action, but also rotate for a certain angle under the action of the guide rod and the directional guide rail, and therefore the push rod can be rapidly withdrawn from the ratchet wheel clamping groove. Similarly, the telescopic element can rotate under the action of the guide rod while the push rod moves linearly, so that the linear movement length of the push rod can be controlled, the rotation angle of the push rod can be controlled indirectly, the push rod can be further contacted with the next tooth, and the tooth is further pushed to complete the rotation action.

In practical application, the driving mechanisms are preferably 2 groups, and the two sides of the ratchet wheel are symmetrically distributed. Two actuating mechanism symmetry sets up, and when using simultaneously, the atress can play the balancing act, and then realizes promoting whole grate rotary motion.

When the telescopic element is actually used, the upper driving mechanism also comprises a mounting seat fixed with the supporting plate, and the telescopic element is rotatably mounted on the mounting seat through a rotating shaft; the driving mechanism below the base seat also comprises a mounting seat fixed with the base seat, and the telescopic element is rotatably mounted on the mounting seat through a rotating shaft. In practical application, the telescopic element can be an electric push rod, an air cylinder or a hydraulic cylinder.

In one embodiment of the utility model, the inside wall of furnace body is provided with the material and keeps off, the material keeps off including that one end is fixed with the inside wall of furnace body, and the swift current material portion that the slope of the other end set up downwards still includes the vertical portion that upper end and swift current material portion lower extreme are connected, and the inside wall that the material kept off and the furnace body forms the air flue, the lateral wall of furnace body still is provided with combustible gas export and concentrate injection mouth, combustible gas export is located the material and keeps off the place region, and communicates with the air flue, the concentrate injection mouth is located the top that the material kept off.

During the in-service use, the angle of swift current material portion downward sloping is greater than 45, sets up like this and can prevent that the material from piling up at the upper surface of swift current material portion, and swift current material portion, vertical portion and furnace body inside wall have formed the air flue, and the main effect of air flue is to avoid combustible gas outlet can be blockked up or take out a large amount of combustible material rubbish or the granule that the schizolysis finishes not.

The concentrated solution injection port is used for quantitatively injecting concentrated solution formed by the domestic garbage sewage treatment system into the furnace body.

In practical use, the number of the combustible gas outlets, the concentrated solution injection ports and the feed inlets is preferably 2, and the combustible gas outlets, the concentrated solution injection ports and the feed inlets are symmetrically arranged at the same height of the furnace body.

In actual use, the furnace body is also provided with a fuel inlet.

In one embodiment of the present invention, the grate includes a sealing plate, a fixing bracket, a housing and a sealing cover which are sequentially arranged from bottom to top, the rotating shaft is fixed on the sealing cover, the lower portion of the fixing bracket is fixed on the ash tray through an annular connecting cylinder, the slag slide carriage is arranged on the outer side wall of the annular connecting cylinder, the sealing plate, the fixing bracket, the housing and the sealing cover enclose an air inlet cavity, the lower portion of the air inlet cavity is used for air to enter, the housing is of a tower-shaped structure, the housing includes a plurality of tower edges with cone shapes, the side wall of the housing has an air outlet, and the air outlet is between two adjacent tower edges.

The air inlet cavity is isolated from the cooling liquid of the ash tray, and external air passes through the air inlet cavity and finally enters the furnace body from the air outlet hole. The casing is the turriform structure, and the main effect is the support and the sediment that falls of material, and the venthole setting can effectually prevent that the slag from dropping through the venthole between two adjacent tower limits.

The utility model has the advantages that: the ash tray of the pyrolysis gasifier drives the grate to rotate together when rotating, namely, the slag slide carriage is driven to rotate together, and because the slag breaking teeth are arranged on the slag slide carriage, the slag which is formed by slagging after the high-temperature pyrolysis gasification of the mixed garbage can be effectively broken to form fine slag to enter the cooling liquid of the ash tray in the rotating process. The cracking gasification furnace is particularly suitable for mixed garbage with high viscosity, such as solid slag separated from catering, kitchen waste and illegal cooking oil.

Description of the drawings:

FIG. 1 is a schematic diagram of a method for disposing urban and rural solid waste by a pyrolysis gasification system;

FIG. 2 is a schematic view of the pyrolysis gasifier;

FIG. 3 is a side view of the ratchet and drive mechanism;

FIG. 4 is a top view of the ratchet and drive mechanism.

The figures are numbered:

1. domestic garbage; 2. kitchen waste; 3. food waste; 4. waste oil; 5. a crusher; 6. a sorting machine; 7. a three-phase oil extraction system; 8. a grease storage tank; 9. a regulating tank; 10. an anaerobic fermentation unit; 11. a material distribution system; 12. a domestic waste sewage treatment system; 13. a bin type biological drying unit; 14. a sorting unit; 15. heavy inorganic matter; 16. a metallic species; 17. screening soil; 18. a light combustible; 19. a pyrolysis gasification system; 20. a purification system; 21. an internal combustion engine generator set; 22. a waste heat boiler; 23. a heat exchanger; 24. a floor heating system; 25. an aeration system; 26. a base; 27. a furnace body; 28. a support; 29. an ash tray; 30. a grate; 31. a slag slide carriage; 32. breaking slag teeth; 33. a rotating shaft; 34. material homogenizing teeth; 35. cooling liquid; 36. a dust removing knife; 37. a refractory layer; 38. a feed inlet; 39. a rotating frame; 40. material shifting teeth; 41. a body; 42. a support plate; 43. a drive structure; 44. a first annular catch; 45. a second annular catch; 46. an annular space; 47. a ratchet wheel; 48. a rolling member; 49. a drive mechanism; 50. water sealing the tank; 51. a telescopic element; 52. a push rod; 53. a mating shaft; 54. a directional guide rail; 55. a guide bar; 56. a mounting seat; 57. a rotating shaft; 58. material blocking; 59. a material sliding part; 60. a vertical portion; 61. an airway; 62. a combustible gas outlet; 63. a concentrate injection port; 64. closing the plate; 65. a fixed mount; 66. a housing; 67. sealing the cover; 68. an annular connecting cylinder; 69. tower edge; 70. and an air outlet.

The specific implementation mode is as follows:

the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, a method for disposing urban and rural solid waste by using a pyrolysis gasification system 19 comprises the following steps:

1) receiving the household garbage 1, stirring and homogenizing the household garbage 1, filtering out percolate, crushing to obtain a first material to be dried, and conveying the percolate obtained from the household garbage 1 to a household garbage sewage treatment system 12 for treatment;

receiving the kitchen waste 2, draining the kitchen waste 2 to obtain leachate, and crushing the kitchen waste 2 to obtain a second material to be dried;

receiving food waste 3, draining the food waste 3 to obtain leachate, sorting the food waste 3, sorting out materials larger than a set value to obtain a third material to be dried, and feeding the rest materials into a three-phase oil extraction system 7;

receiving the illegal cooking oil 4, filtering solid substances to obtain a fourth material to be dried, and feeding liquid substances into a three-phase oil extraction system 7;

2) the three-phase oil extraction system 7 works to obtain solid slag, grease and a water phase, wherein the solid slag is a fifth material to be dried; the method comprises the following steps of (1) carrying out draining operation on a water phase obtained by a three-phase oil extraction system 7 to obtain a percolate, carrying out draining operation on food waste 3 to obtain a percolate, carrying out draining operation on kitchen waste 2 to obtain a percolate, conveying the percolate to an adjusting tank 9, then feeding the percolate into an anaerobic fermentation unit 10, carrying out anaerobic fermentation on the anaerobic fermentation unit 10 to obtain a fermented liquid and impurity-containing biogas, and conveying the fermented liquid to a domestic waste sewage treatment system 12;

3) the first material to be dried, the second material to be dried, the third material to be dried, the fourth material to be dried and the fifth material to be dried enter a bin type biological drying unit 13 for drying operation through a material distribution system 11 according to a set proportion;

4) the dried mixture in the step 3) enters a sorting unit 14, and the sorting unit 14 divides the mixture into heavy inorganic matters 15, metal matters 16, screening soil 17 and light combustible matters 18;

5) conveying the impurity-containing biogas obtained in the step 2) to a pyrolysis gasification system 19, mixing the screened soil 17 and the light combustible 18 according to a set proportion, and conveying the mixture to the pyrolysis gasification system 19 for pyrolysis gasification operation to obtain slag and gaseous high-temperature combustible gas;

6) the gaseous high-temperature combustible gas is purified by the purification system 20 to obtain clean combustible gas.

The scheme mainly treats urban and rural household garbage 1, and cooperatively treats the illegal cooking oil 4, the food waste 3 and the kitchen waste 2. Wherein, the solid residues separated from the catering, kitchen waste and the waste oil 4 and the domestic garbage 1 are firstly biologically dried, and then enter a cracking gasification system 19 for resource treatment after the water content is greatly reduced, and particularly, in the resource treatment process of the waste oil 4, the catering garbage 3 and the waste oil 2, all the materials are effectively treated in a resource way.

The sorting unit 14 is arranged behind the bin type biological drying unit 13 because the moisture content of the dried material is greatly reduced, the viscosity is also greatly reduced, and the sorting of the material is more facilitated. The bin type biological drying unit 13 is adopted to carry out aerobic drying treatment on the mixed material and then the mixed material enters the cracking gasification system 19, so that the whole cracking working condition is better, and the control of the whole cracking gasification process is more facilitated.

During practical use, the three-phase oil extraction system 7 can be an existing oil-water-slag three-phase separator, and divides the entering materials into solid slag (solid phase), oil phase and water phase under the heating state through the centrifugal principle, wherein the solid slag is the fifth material to be dried, the oil phase is grease, the obtained grease is stored in the grease storage tank 8 and then can be sold and utilized.

The heavy inorganic substance 15 in the step 4) and the slag obtained in the step 5) can be used as building material raw materials. The metal substance 16 obtained in the step 4) can be sold and utilized.

The anaerobic fermentation unit 10 can greatly reduce COD in the percolate, and the components of the fermented liquid after anaerobic treatment are similar to those of the percolate of the domestic garbage 1, so the fermented liquid can also enter the domestic garbage sewage treatment system 12 for cooperative treatment.

As shown in fig. 1, in the present embodiment, the bin type biological drying unit 13 is provided with an aeration system 25 and a floor heating system 24; the method for disposing urban and rural solid waste by the cracking gasification system 19 further comprises a step 7), and the step 7) is as follows: and (2) sending the clean combustible gas obtained in the step 6) into an internal combustion engine generator set 21 for power generation, generating high-temperature flue gas by the internal combustion engine while generating power, sending part of the high-temperature flue gas to a waste heat boiler 22 to generate steam, sending the steam to a three-phase oil extraction system 7 for use, sending the other part of the high-temperature flue gas to a heat exchanger 23 to obtain hot water, wherein one part of the hot water enters a floor heating system 24 to heat the bottom plate of the bin type biological drying unit 13, and the other part of the hot water is matched with an aeration system 25 through a heat exchange pipe and is used for heating air entering the bin type biological drying unit 13.

The aeration system 25 controls the whole biological drying process by controlling the oxygen content, temperature and humidity in the chamber type biological drying unit 13, so as to rapidly complete the whole biological drying process. The floor heating system 24 is arranged at the bottom of the aeration system 25, and the temperature in the bin can be rapidly increased through heat exchange of circulating water at the bottom of the bin, so that the whole biological drying process is accelerated, the degradation of organic matters in the whole mixed garbage is facilitated, the water content in the garbage is greatly reduced, and most of water at the place where the mixed garbage is removed is taken away by the air of the aeration system 25. In practical application, the temperature of the high-temperature flue gas can be 500-550 ℃. Through the utilization to the high temperature flue gas heat, can enough provide steam for three-phase oil extraction system 7, can provide heat energy for storehouse formula biological drying unit 13 again, and the hot water that the high temperature flue gas obtained through the heat transfer has partly to get into floor heating system 24 and heats the bottom plate of storehouse formula biological drying unit 13, can improve the temperature in whole biological drying storehouse fast. The other part of the hot water is matched with the aeration system 25 through the heat exchange pipe, and can heat the air entering the bin type biological drying unit 13, so that the whole biological drying process is further and rapidly realized.

The method for utilizing the high-temperature flue gas has high thermoelectric utilization rate.

As shown in fig. 1, in this embodiment, the domestic waste sewage treatment system 12 works to obtain a concentrated solution, and the concentrated solution is delivered to the pyrolysis gasification system 19 for pyrolysis gasification operation. The concentrated solution obtained by the working of the domestic waste sewage treatment system 12 has a certain heat value, and the concentrated solution is conveyed to the pyrolysis gasification system 19 for resource utilization, and the difficulty of removing the concentrated solution is solved. The method can realize the closed cyclic utilization of various wastes, and is particularly suitable for the recycling process of urban and rural solid wastes.

As shown in fig. 1, in the present embodiment, the household garbage 1 and the kitchen garbage 2 are crushed by the crusher 5, and the household garbage 1 and the kitchen garbage 2 share the same crusher 5. In this embodiment, the crusher 5 is used to crush the garbage to a particle size of 200mm or less.

In actual use, when the crusher 5 is provided separately for each of the household garbage 1 and the kitchen garbage 2, the kitchen garbage 2 is preferably crushed to a particle size of 50mm or less.

During practical application, the drying unit can be arranged after crushing according to requirements, further surface water of the kitchen garbage 2 is squeezed, and then a second material to be dried is formed.

As shown in fig. 1, in this embodiment, the food waste 3 is sorted by the sorting machine 6, and the set value of sorting is 60 mm.

In this embodiment, in step 3), the total weight of the third material to be dried, the fourth material to be dried and the fifth material to be dried entering the bin-type biological drying unit 13 is not more than 10% of the total weight of the first material to be dried and the second material to be dried entering the bin-type biological drying unit 13.

In this embodiment, the water content of the material passing through the bin type biological drying unit 13 is reduced to below 30%.

As shown in fig. 1, in the present embodiment, when the drainage oil 4 is filtered, the fluidity of the material is increased by the washing water.

As shown in fig. 2, the pyrolysis gasification system 19 includes a pyrolysis gasification furnace. In this embodiment, the pyrolysis gasifier includes:

a base 26;

the furnace body 27 is fixed on the basic base 26 through a bracket 28;

the ash tray 29 is arranged at the bottom of the furnace body 27 and can rotate relative to the furnace body 27, and the lower end of the furnace body 27 is positioned in the ash tray 29;

the furnace grate 30 is positioned at the lower part of the furnace body 27 and is fixed with the ash tray 29, a circle of slag slide carriage 31 is arranged around the lower part or the bottom of the furnace grate 30, slag breaking teeth 32 are arranged on the slag slide carriage 31, a rotating shaft 33 is arranged at the top of the furnace grate 30, a plurality of material homogenizing teeth 34 are arranged on the side wall of the rotating shaft 33 around the axis of the rotating shaft, the ash tray 29 is used for loading cooling liquid 35, and the liquid level of the cooling liquid 35 is higher than the lower end face of the furnace body 27.

The ash tray 29 of the pyrolysis gasifier drives the grate 30 to rotate together when rotating, namely, the slag slide carriage 31 is driven to rotate together, and because the slag breaking teeth 32 are arranged on the slag slide carriage 31, in the rotating process, the slag formed by slagging after the mixed garbage is pyrolyzed and gasified at high temperature can be effectively broken into fine slag to enter the cooling liquid 35 of the ash tray 29. The cracking gasification furnace is particularly suitable for mixed garbage with high viscosity, such as solid slag separated from catering, kitchen waste and illegal cooking oil 4.

In practice, the cooling liquid 35 may be water.

As shown in fig. 2, in the present embodiment, the ash removing device further includes an ash removing knife 36 fixed on the outer side wall of the furnace body 27, the lower end of the ash removing knife 36 extends to the bottom wall of the ash tray 29, and the side end is adjacent to the inner side wall of the ash tray 29; the furnace body 27 comprises an inner side wall, an outer side wall and a water jacket arranged between the inner wall and the outer wall, and a fire-resistant layer 37 is arranged at the lower part of the inner side wall of the furnace body 27.

The ash-sweeping plate is fixed with the furnace body 27, so that when the whole ash tray 29 rotates, the ash-sweeping plate is static and moves relatively, and the ash-sweeping function can be realized to sweep out cooled ash. The furnace body 27 is provided with the water jacket and the fire-resistant layer 37, so that the furnace body 27 can be effectively protected.

As shown in FIG. 2, in the present embodiment, the upper portion of the sidewall of the furnace body 27 has a feed inlet 38; the upper port of the furnace body 27 is rotatably provided with a rotating frame 39, the feeding port 38 is aligned with the rotating frame 39, and the rotating frame 39 is provided with a material poking tooth 40 around the axis of the rotating frame 39.

Thereby it is rotatory to set up can pivoted swivel mount 39 and can drive and dial material tooth 40, and the material is followed feed inlet 38 and is gone into the back like this, can be dialled material tooth 40 and carry out the homogenization earlier, then burns, the burning that can be more abundant like this. In practice, the feed inlet 38 is preferably fed by a screw.

As shown in fig. 2, in the present embodiment, the rotating frame 39 includes a body 41 with an inverted cone shape contacting with the material, the material-ejecting tooth 40 is disposed on the body 41, and the material-ejecting tooth 40 is disposed obliquely downward.

The material shifting teeth 40 are downward in inclined angle, so that the material feeding and homogenizing process is facilitated, the mixed garbage with high viscosity can be effectively scattered, the reliable blanking of the garbage can be facilitated in the cracking and gasification process, the garbage cannot collapse, and the garbage homogenizing and blanking can be effectively performed by the aid of the structure.

As shown in fig. 2, in the present embodiment, the material-homogenizing teeth 34 have multiple layers, the material-homogenizing teeth 34 in each layer are uniformly distributed around the axis of the rotating shaft 33, and two adjacent layers of material-homogenizing teeth 34 are arranged in a staggered manner;

the material shifting teeth 40 are provided with a plurality of groups which are distributed up and down, the material shifting teeth 40 of each group are uniformly distributed around the axis of the body 41, and the distance from the material shifting teeth 40 of the upper group to the inner side wall of the furnace body 27 is smaller than the distance from the material shifting teeth 40 of the lower group to the inner side wall of the furnace body 27.

In practical use, the material homogenizing teeth 34 are preferably two layers, each layer is preferably provided with 3 teeth, and the space between the teeth is 120 degrees, so that material homogenizing can be carried out more reliably, and more sufficient combustion can be realized.

In practice, the rotating frame 39 is cast from a high temperature resistant material.

As shown in fig. 2, in this embodiment, the outer side wall of the upper end of the furnace body 27 is provided with a support plate 42 connected with the bracket 28, the pyrolysis gasification furnace further comprises an upper driving structure 43 and a lower driving structure 43, the upper driving structure 43 is used for driving the rotating frame 39 to rotate, and the lower driving structure 43 is used for driving the ash tray 29 to rotate;

as shown in fig. 2, the driving structures 43 each include:

the first annular catch 44, wherein the first annular catch 44 of the upper driving structure 43 is fixed to the support plate 42, and the first annular catch 44 of the lower driving structure 43 is fixed to the base 26;

a second annular retainer 45 located inside the corresponding first annular retainer 44, wherein the first annular retainer 44 and the second annular retainer 45 have the same axis, and the first annular retainer 44 and the second annular retainer 45 form an annular space 46, wherein the second annular retainer 45 of the upper driving structure 43 is fixed to the rotating frame 39, and the second annular retainer 45 of the lower driving structure 43 is fixed to the ash pan 29;

a plurality of rollers 48 mounted in the annular space 46, wherein the rollers 48 of the upper drive structure 43 are adapted to support the rotating frame 39, and the rollers 48 of the lower drive structure 43 are adapted to support the ash tray 29;

a ratchet wheel 47, wherein the ratchet wheel 47 of the upper driving structure 43 is arranged on the periphery of the rotating frame 39, and the ratchet wheel 47 of the lower driving structure 43 is arranged on the periphery of the ash tray 29;

and the driving mechanism 49 is used for driving the corresponding ratchet wheel 47 to rotate.

The conventional ash tray 29 and grate 30 of the pyrolysis gasification furnace are arranged in the furnace through the rotating shaft 57 and the bearing, the temperature in the furnace is high, the rotating shaft 57 is easy to deform or the bearing is easy to damage, and the whole ash discharging system is easy to damage. In addition, the diameter of the whole cracking furnace is large, the requirements on the shaft and the bearing are high by adopting a whole shaft rotating mode, the damage is easy to cause in the using process, and the manufacturing and maintenance cost is high. In the present application, the rotating frame 39 and the ash tray 29 are both located on the corresponding rolling members 48, the second annular stopper 45 is located at the inner side of the first annular stopper 44, and the rotating frame 39 and the ash tray 29 are limited by the first annular stopper 44, so that the rotating frame 39 and the ash tray 29 can reliably do rotating motion. The whole ash tray 29 and the rotating frame 39 rotate without shafts and bearings, so that the maintenance difficulty and the manufacturing cost are greatly reduced, the structure is simple and reliable, and the practicability is good.

In practice, the rolling member 48 is in the shape of a sphere, or a sphere-like shape.

In practice, the driving mechanism 49 may preferably be hydraulically driven, or other electro-hydraulic, electric, gear driven, sprocket driven, etc. driving mechanisms may be used.

The driving mechanism 49 drives the ratchet wheel 47 to drive the whole rotating frame 39 to rotate, and the rotating frame 39 and the material shifting teeth 40 rotate, so that the processes of scattering, homogenizing and blanking materials entering the furnace body 27 are realized.

As shown in fig. 2, in the present embodiment, a water-sealed groove 50 is formed on the supporting plate 42, and the lower end of the first annular catch 44 of the upper driving structure 43 extends into the water-sealed groove 50. Sealing liquid (such as water) is added into the water seal tank 50, and the upper end of the furnace body 27 can realize liquid seal through the structure of the rotating frame 39 and the water seal tank 50, namely the top of the furnace body 27 can be sealed.

As shown in fig. 2, 3 and 4, in the present embodiment, the driving mechanism 49 includes:

the telescopic element 51 is rotatably arranged on the outer side of the ratchet wheel 47, the telescopic element 51 comprises a telescopic push rod 52, one end of the push rod 52 is used for being matched with teeth of the ratchet wheel 47 when extending out to push the ratchet wheel 47 to rotate, and a matching shaft 53 is rotatably arranged at one end, matched with the ratchet wheel 47, of the push rod 52;

an orientation guide 54, the orientation guide 54 of the upper drive structure 43 being fixed relative to the support plate 42, the orientation guide 54 of the lower drive structure 43 being fixed relative to the base 26;

and the guide rod 55 is slidably arranged on the directional guide rail 54, one end of the guide rod 55 close to the ratchet wheel 47 is hinged with the push rod 52, and the guide rod 55 is used for changing the angle of the push rod 52 when the push rod 52 extends and retracts.

The telescopic element 51 pushes the push rod 52 to move, the push rod 52 is in contact with the ratchet wheel 47 and pushes the whole ratchet wheel 47 to rotate under the guiding action of the guide rod 55, after the position of the telescopic element 51 reaches a designated position, the ratchet wheel 47 just pushes one tooth, at the moment, the telescopic element 51 is controlled to gradually retract the push rod 52, at the moment, under the action of the guide rod 55, the push rod 52 does not only do linear retraction motion, but also can rotate for a certain angle under the action of the guide rod 55 and the directional guide rail 54, and therefore the push rod 52 can be rapidly withdrawn from a clamping groove of the ratchet wheel 47. Similarly, the telescopic element 51 can rotate under the action of the guide rod 55 while the push rod 52 moves linearly, so that the linear movement length of the push rod 52 can be controlled, the rotation angle of the push rod can be indirectly controlled, the push rod 52 can be further contacted with the next tooth, and the tooth is further pushed to complete the rotation action.

In practice, the driving mechanism 49 preferably comprises 2 groups, and the two sides of the ratchet wheel 47 are symmetrically distributed. The two driving mechanisms 49 are symmetrically arranged, and when the furnace bar is used, stress can play a balance role, so that the whole furnace bar 30 is pushed to rotate.

In practical use, the upper driving mechanism 49 further comprises a mounting seat 56 fixed to the support plate 42, and the telescopic element 51 is rotatably mounted on the mounting seat 56 through a rotating shaft 57; the lower drive mechanism 49 further comprises a mounting 56 fixed to the base 26, the telescopic element 51 being rotatably mounted on the mounting 56 by means of a rotating shaft 57. In practice, the telescopic element 51 may be an electric push rod 52, an air cylinder or a hydraulic cylinder.

As shown in fig. 2, in this embodiment, a material stopper 58 is disposed on an inner side wall of the furnace body 27, the material stopper 58 includes a material sliding portion 59 having one end fixed to the inner side wall of the furnace body 27 and the other end inclined downward, and a vertical portion 60 having an upper end connected to a lower end of the material sliding portion 59, the material stopper 58 and the inner side wall of the furnace body 27 form an air passage 61, the side wall of the furnace body 27 is further provided with a combustible gas outlet 62 and a concentrated solution injection port 63, the combustible gas outlet 62 is located in an area where the material stopper 58 is located and is communicated with the air passage 61, and the concentrated solution injection port 63 is located above the material stopper 58.

In practical use, the downward inclination angle of the material sliding portion 59 is greater than 45 degrees, so that the material can be prevented from being accumulated on the upper surface of the material sliding portion 59, the vertical portion 60 and the inner side wall of the furnace body 27 form an air channel 61, and the air channel 61 mainly has the function of preventing the combustible gas outlet 62 from being blocked or carrying a large amount of combustible garbage or particles which are not cracked.

The concentrated solution injection port 63 is used for quantitatively injecting the concentrated solution formed by the domestic waste sewage treatment system 12 into the furnace body 27.

In practical use, the number of the combustible gas outlets 62, the concentrated solution injection ports 63 and the feed ports 38 is preferably 2, and the combustible gas outlets, the concentrated solution injection ports 63 and the feed ports are symmetrically arranged at the same height of the furnace body 27.

In actual use, the furnace body 27 also has a fuel inlet.

As shown in fig. 2, in the present embodiment, the grate 30 includes a sealing plate 64, a fixing frame 65, a housing 66 and a sealing cover 67, which are sequentially arranged from bottom to top, the rotating shaft 33 is fixed on the sealing cover 67, the lower portion of the fixing frame 65 is fixed on the ash tray 29 through an annular connecting cylinder 68, the slag chute 31 is arranged on the outer side wall of the annular connecting cylinder 68, the sealing plate 64, the fixing frame 65, the housing 66 and the sealing cover 67 define an air inlet cavity, the lower portion of the air inlet cavity is used for air to enter, the housing 66 is in a tower-shaped structure, the housing 66 includes a plurality of tower edges 69 in a cone shape, the side wall of the housing 66 has air outlet holes 70, and the air outlet holes 70 are located.

The air inlet cavity is isolated from the cooling liquid 35 of the ash tray 29, and external air passes through the air inlet cavity and finally enters the furnace body 27 from the air outlet 70. The shell 66 is of a tower-shaped structure and mainly used for supporting materials and discharging slag, and the air outlet holes 70 are formed between the two adjacent tower edges 69, so that the slag can be effectively prevented from falling through the air outlet holes 70.

The above only is the preferred embodiment of the present invention, not therefore the limit the patent protection scope of the present invention, all applications the equivalent structure transformation made by the contents of the specification and the drawings of the present invention is directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. A pyrolysis gasifier, comprising:

a base;

the furnace body is fixed on the base through a bracket;

2. The pyrolysis gasifier of claim 1, further comprising an ash removal knife fixed on the outer side wall of the furnace body, wherein the lower end of the ash removal knife extends to the bottom wall of the ash tray, and the side end of the ash removal knife is adjacent to the inner side wall of the ash tray; the furnace body includes inside wall, lateral wall and sets up the water jacket between inner wall and outer wall, the lower part of the inside wall of furnace body is provided with the flame retardant coating.

3. The pyrolysis gasifier of claim 1, wherein the upper portion of the furnace body side wall has a feed inlet; the upper port of the furnace body is rotatably provided with a rotating frame, the feed inlet is aligned to the rotating frame, and the rotating frame is provided with a material shifting tooth around the axis of the rotating frame.

4. The pyrolysis gasifier of claim 3, wherein the rotating frame comprises an inverted cone-shaped body in contact with the material, and the material-ejecting teeth are disposed on the body and are disposed obliquely downward.

5. The pyrolysis gasifier of claim 4, wherein the leveling teeth have multiple layers, the leveling teeth of each layer are uniformly distributed around the axis of the rotating shaft, and two adjacent layers of the leveling teeth are arranged in a staggered manner;

6. The pyrolysis gasifier of claim 3, wherein the outer side wall of the upper end of the furnace body is provided with a support plate connected with a bracket, the pyrolysis gasifier further comprises an upper driving structure and a lower driving structure, the upper driving structure is used for driving the rotating frame to rotate, and the lower driving structure is used for driving the ash tray to rotate;

the drive structures each include:

7. The pyrolysis gasifier of claim 6, wherein the support plate is provided with a water-sealed groove, and a lower end of the first annular catch of the upper driving structure extends into the water-sealed groove.

8. The pyrolysis gasifier of claim 6, wherein the drive mechanism comprises:

9. The pyrolysis gasifier as claimed in claim 1, wherein the inside wall of the furnace body is provided with a material stopper, the material stopper comprises a material sliding portion with one end fixed to the inside wall of the furnace body and the other end inclined downward, and a vertical portion with the upper end connected with the lower end of the material sliding portion, the material stopper and the inside wall of the furnace body form an air passage, the side wall of the furnace body is further provided with a combustible gas outlet and a concentrated solution injection port, the combustible gas outlet is located in the area where the material stopper is located and is communicated with the air passage, and the concentrated solution injection port is located above the material stopper.

10. The pyrolysis gasifier of claim 1, wherein the grate comprises a sealing plate, a fixing support, a shell and a sealing cover which are sequentially arranged from bottom to top, the rotating shaft is fixed on the sealing cover, the lower part of the fixing support is fixed on the ash tray through an annular connecting cylinder, the slag slide carriage is arranged on the outer side wall of the annular connecting cylinder, the sealing plate, the fixing support, the shell and the sealing cover define an air inlet cavity, the lower part of the air inlet cavity is used for air to enter, the shell is of a tower-shaped structure and comprises a plurality of conical tower edges, the side wall of the shell is provided with air outlet holes, and the air outlet holes are formed between two adjacent tower edges.