CN112856439A - Combustion processor and method for treating refuse incineration ash - Google Patents
Combustion processor and method for treating refuse incineration ash Download PDFInfo
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- CN112856439A CN112856439A CN202110064060.XA CN202110064060A CN112856439A CN 112856439 A CN112856439 A CN 112856439A CN 202110064060 A CN202110064060 A CN 202110064060A CN 112856439 A CN112856439 A CN 112856439A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003245 coal Substances 0.000 claims abstract description 87
- 230000002093 peripheral effect Effects 0.000 claims abstract description 67
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 40
- 238000004056 waste incineration Methods 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 19
- 239000002817 coal dust Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 229910001385 heavy metal Inorganic materials 0.000 claims description 8
- 230000001464 adherent effect Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims 1
- 238000004939 coking Methods 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract description 6
- 238000000151 deposition Methods 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 239000002956 ash Substances 0.000 description 46
- 239000007789 gas Substances 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/10—Supplementary heating arrangements using auxiliary fuel
- F23G2204/101—Supplementary heating arrangements using auxiliary fuel solid fuel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a combustion processor and a garbage incineration ash treatment method, wherein the combustion processor comprises a shell and an adherence wind air duct, the shell is provided with a first cavity and a peripheral wall enclosing the first cavity, an adherence air duct is arranged in the first cavity, an adherence air channel is formed between the outer peripheral surface of the adherence air duct and the peripheral wall, the adherence air duct is arranged in the first cavity, a combustion air channel is formed between the outer peripheral surface of the combustion air duct and the inner peripheral surface of the adherence air duct, a pulverized coal supply component is arranged in the first cavity, a temperature adjusting air duct is arranged in the first cavity, the temperature adjusting air duct is sleeved on the pulverized coal supply component, a transition channel is formed between the inner peripheral surface of the temperature adjusting air duct and the outer peripheral surface of the pulverized coal supply component, and a temperature adjusting channel is formed between the outer peripheral surface of the temperature adjusting air duct and the inner peripheral surface of the combustion air duct. The combustion processor avoids the occurrence of phenomena of dust deposition, coking and corrosion on the surface of the peripheral wall.
Description
Technical Field
The invention relates to the technical field of waste incineration, in particular to a combustion processor and a waste incineration ash treatment method implemented by using the combustion processor.
Background
The fly ash from incineration of domestic and industrial waste is a dangerous waste, and the treatment method of fly ash from incineration of waste mainly includes solidification and stabilization treatment technology, chemical treatment and heat treatment technology.
However, the solidification and stabilization treatment technology and the chemical treatment technology have the problems of higher treatment cost, complex operation, small stabilization effect, easy leaching of harmful substances and the like.
The heat treatment technology also has the problems of insufficient waste incineration combustion, dust deposition, coking, corrosion and the like on the inner wall of the heat treatment equipment.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, an embodiment of an aspect of the present invention provides a combustion processor, which can form a cooling layer flowing along an inner wall surface of the combustion processor in the combustion processor through a wall-attached air channel to cool the combustion processor, thereby preventing the occurrence of ash deposition, coking and corrosion on the inner wall surface of the combustion processor.
An embodiment of an aspect of the present invention provides a method for treating incinerated garbage using a combustion processor.
A combustion processor according to an embodiment of a first aspect of the invention comprises: a housing having a first cavity and a perimeter wall enclosing the first cavity; the wall-attached wind guide cylinder is arranged in the first cavity, and a wall-attached wind channel is formed between the peripheral surface of the wall-attached wind guide cylinder and the peripheral wall; the combustion-supporting air duct is arranged in the first cavity, and a combustion-supporting air channel is formed between the outer peripheral surface of the combustion-supporting air duct and the inner peripheral surface of the wall-adhering air duct; a pulverized coal supply assembly disposed within the first chamber; the temperature-adjusting air duct is arranged in the first cavity and sleeved on the pulverized coal supply component, a transition channel is formed between the inner peripheral surface of the temperature-adjusting air duct and the outer peripheral surface of the pulverized coal supply component, and a temperature-adjusting channel is formed between the outer peripheral surface of the temperature-adjusting air duct and the inner peripheral surface of the combustion-supporting air duct.
According to the combustion processor provided by the embodiment of the invention, the adherence air duct, the combustion-supporting air duct, the temperature-adjusting air duct and the coal powder supply assembly are arranged in the combustion processor in a mutually sleeved mode, wherein the coal powder supply assembly is arranged along the axial direction of the combustion processor, the axis of the coal powder supply assembly is approximately coincident with the axis of the combustion processor, the temperature-adjusting air duct is sleeved on the coal powder supply assembly in the radial direction of the combustion processor, the combustion-supporting air duct is sleeved on the temperature-adjusting air duct, the adherence air duct is sleeved on the combustion-supporting air duct, an adherence air channel can be formed between the adherence air duct and the peripheral wall of the first cavity, the combustion processor provided by the embodiment of the invention can introduce air into the combustion processor through the adherence air channel according to the temperature of the peripheral wall of the combustion processor, the air can flow along the peripheral wall to form an air cooling layer, and the air cooling layer can well reduce the temperature of the peripheral wall, the temperature of the peripheral wall is kept stable, the phenomena of dust deposition, coking and corrosion on the surface of the peripheral wall are avoided, and the service life of the combustion processor is prolonged.
In some embodiments, the pulverized coal supply assembly includes a pulverized coal pipe disposed in the first cavity along an axis of the first cavity, the pulverized coal pipe having an inlet end and an outlet end, the temperature-adjusting air duct is sleeved at the inlet end of the pulverized coal pipe, and the return cap is disposed at the outlet end of the pulverized coal pipe, the return cap is substantially cylindrical, and an outlet of the return cap faces the inlet end of the pulverized coal pipe.
In some embodiments, the combustion processor further comprises an impeller assembly, the impeller assembly is arranged in each of the combustion air channel and the temperature adjusting channel, the impeller assembly comprises a blade and a telescopic rod which are connected with each other, and the telescopic rod is arranged along the axial direction of the first cavity.
In some embodiments, the adherence wind guide duct comprises a barrel and a flexible portion sleeved on the outer peripheral surface of the barrel, the exhaust gas processor further comprises an adjusting assembly, the adjusting assembly comprises an adjusting piece and a sealing washer, the barrel is provided with a mounting hole, a first portion of the adjusting piece penetrates through the flexible portion and is arranged in the mounting hole, a second portion of the adjusting piece is pressed on the outer peripheral surface of the flexible portion, and the sealing washer is arranged between the second portion of the adjusting piece and the outer peripheral surface of the flexible portion.
In some embodiments, the temperature-adjusting air duct has a first end and a second end opposite to each other along the axial direction of the pulverized coal pipe, the first end of the temperature-adjusting air duct is open, the second end of the temperature-adjusting air duct is provided with a plurality of through holes, the exhaust gas processor further includes a flame detector and an igniter, the flame detector and the igniter are arranged in the temperature-adjusting air duct, and the flame of the igniter penetrates through the through holes and then enters the first cavity.
According to an embodiment of a second aspect of the present invention, a method for treating incinerated garbage using the combustion processor according to any one of the above embodiments, comprises the steps of:
determining the combustion temperature of the combustion processor according to the components of the waste incineration ash; the waste incineration ash and the coal dust enter the combustion processor through the coal dust supply assembly; the air is divided into two paths to enter the combustion processor, wherein one path of air enters the combustion processor through a combustion-supporting air channel, the other path of air enters the combustion processor through an adherence air channel and forms adherence air, and at least one part of the adherence air flows along the peripheral wall of the combustion processor to form a cooling layer; igniting the pulverized coal and the waste incineration ash in the combustion processor.
According to the method for treating the waste incineration ash implemented by using the combustion processor, provided by the embodiment of the invention, the wall-attached air guide cylinder, the combustion-supporting air guide cylinder, the temperature-adjusting air guide cylinder and the coal powder supply assembly are arranged in the combustion processor in a sleeved mode, wherein the coal powder supply assembly is arranged along the axial direction of the combustion processor, the axis of the coal powder supply assembly is approximately coincident with the axis of the combustion processor, the temperature-adjusting air guide cylinder is sleeved on the coal powder supply assembly in the radial direction of the combustion processor, the combustion-supporting air guide cylinder is sleeved on the temperature-adjusting air guide cylinder, the wall-attached air guide cylinder is sleeved on the combustion-supporting air guide cylinder, and a wall-attached air channel can be formed between the wall-attached air guide cylinder and the peripheral wall of the first cavity, the air can flow along the peripheral wall to form an air cooling layer, and the air cooling layer can well reduce the temperature of the peripheral wall, so that the temperature of the peripheral wall is kept stable, the phenomena of dust deposition, coking and corrosion on the surface of the peripheral wall are avoided, and the service life of the combustion processor is prolonged.
In some embodiments, the method for treating incinerated garbage using a combustion processor further comprises: before the refuse-incinerated ash and the pulverized coal enter the combustion processor, mixing a non-combustible powder blend, the pulverized coal and the refuse-incinerated ash so as to adsorb heavy metal elements formed by melting the refuse-incinerated ash by using the non-combustible powder blend, wherein optionally, the mass of the refuse-incinerated ash accounts for 20-80% of the total mass of the refuse-incinerated ash, the pulverized coal and the non-combustible powder blend, the particle size of the refuse-incinerated ash is 50-250 micrometers, the particle size of the pulverized coal is 50-250 micrometers, and the particle size of the non-combustible powder blend is 50-250 micrometers.
In some embodiments, the mass of the waste incineration ash is 20% to 80% of the total mass of the waste incineration ash and the pulverized coal.
In some embodiments, the flexible portion of the adherent wind air duct is compressed to expand the flow area of the adherent wind channel when the temperature of the peripheral wall of the combustion processor is above a preset temperature, optionally the preset temperature is 40 ℃.
In some embodiments, the combustion temperature of the combustion processor is 900-1600 ℃.
Drawings
FIG. 1 is a perspective view of a combustion processor according to an embodiment of the invention.
Fig. 2 is a cross-sectional view of the combustion processor of fig. 1.
FIG. 3 is a schematic illustration of an impeller assembly in a combustion processor according to an embodiment of the present invention.
FIG. 4 is a schematic view of a tuning assembly in a combustion processor according to an embodiment of the present invention.
FIG. 5 is a schematic view of a throat-shaped separator in a combustion processor according to an embodiment of the invention.
FIG. 6 is a schematic view of a gear-type separator in a combustion processor according to an embodiment of the invention.
FIG. 7 is a schematic diagram of a petal separator in a combustion processor in accordance with an embodiment of the present invention.
Reference numerals:
the device comprises a combustion processor 100, a shell 101, a first cavity 102, a peripheral wall 103, an adherence air duct 1, an adherence air channel 11, a cylinder 12, a flexible part 13, a mounting hole 14, a combustion-supporting air duct 2, a combustion-supporting air channel 21, a temperature-adjusting air duct 3, a transition channel 31, a temperature-adjusting channel 32, a pulverized coal supply component 5, a pulverized coal pipe 51, a backflow cap 52, an impeller component 6, blades 61, an expansion link 62, an adjusting component 7, an adjusting component 71, a sealing gasket 72, a pulverized coal separator 8, a throat-shaped separator 81, a gear-shaped separator 82 and a petal-shaped separator 83.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 7, a combustion processor 100 according to an embodiment of the present invention includes a housing 101, an adherent air duct 1, a combustion air duct 2, a pulverized coal supply assembly 5, and a temperature-adjusting air duct 3.
The housing 101 has a first chamber 102 and a peripheral wall 103 enclosing the first chamber 102. The adherence wind guide duct 1 is arranged in the first cavity 102, and an adherence wind channel 11 is formed between the peripheral surface of the adherence wind guide duct 1 and the peripheral wall 103. The combustion-supporting air duct 2 is arranged in the first cavity 102, and a combustion-supporting air channel 21 is formed between the outer peripheral surface of the combustion-supporting air duct 2 and the inner peripheral surface of the wall-adhering air duct 1. The pulverized coal supply component 5 is arranged in the first cavity 102, the temperature-adjusting air duct 3 is sleeved on the pulverized coal supply component 5, a transition channel 31 is formed between the inner peripheral surface of the temperature-adjusting air duct 3 and the outer peripheral surface of the pulverized coal supply component 5, and a temperature-adjusting channel 32 is formed between the outer peripheral surface of the temperature-adjusting air duct 3 and the inner peripheral surface of the combustion-supporting air duct 2.
The method for treating incinerated garbage using the combustion processor 100 according to the embodiment of the present invention comprises the steps of:
the combustion temperature of the combustion processor 100 is determined according to the components of the waste incineration ash, the waste incineration ash and the coal dust enter the combustion processor 100 through the coal dust supply group 5, the air enters the combustion processor 100 by being divided into two paths, wherein one path of air enters the combustion processor 100 through the combustion-supporting air channel 21, the other path of air enters the combustion processor 100 through the wall-attached air channel 11 and forms wall-attached air, at least one part of the wall-attached air flows along the peripheral wall 103 of the combustion processor 100 to form a cooling layer, and the coal dust and the waste incineration ash in the combustion processor 100 are ignited.
Specifically, as shown in fig. 1-2, the pulverized coal supply assembly 5 is horizontally disposed along the left-right direction, and the axis of the pulverized coal supply assembly 5 is substantially coincident with the axis of the first cavity 102, that is, the pulverized coal supply assembly 5 is located in the middle of the first cavity 102. Buggy and msw incineration ash all get into in buggy supply subassembly 5 through the left end of buggy supply subassembly 5 to right-hand member through buggy supply subassembly 5 gets into in the first chamber 102, therefore, can make buggy and msw incineration ash also locate the intermediate position in first chamber 102 after getting into first chamber 102 through buggy supply subassembly 5, make buggy and msw incineration ash burning more abundant, be favorable to improving the utilization ratio of buggy, improve the decomposition rate that the ash was burnt to rubbish.
The wall-attached air guide duct 1, the combustion-supporting air guide duct 2 and the temperature-adjusting air guide duct 3 are all arranged on the inner side of the left end of the shell 101, wherein the temperature-adjusting air guide duct 3 is sleeved on the left end of the pulverized coal supply component 5, the combustion-supporting air guide duct 2 is sleeved on the temperature-adjusting air guide duct 3, the wall-attached air guide duct 1 is sleeved on the combustion-supporting air guide duct 2, and in the axial direction of the first cavity 102, the right end of the wall-attached air guide duct 1, the right end of the combustion-supporting air guide duct 2 and the right end of the temperature-adjusting air guide duct 3 are approximately aligned. Therefore, the air introduced into the first cavity 102 from the adherence air channel 11 and the waste gas introduced into the first cavity 102 from the temperature adjusting channel 32 cannot interfere with each other when entering the first cavity 102, so that the temperature adjusting gas can better flow into the first cavity 102, and the utilization rate of the temperature adjusting gas is improved.
Meanwhile, the air flows into the first cavity 102 better, which is beneficial to improving the cooling effect of the air on the peripheral wall 103, and the air flows along the peripheral wall 103 to form an air cooling layer, which can well reduce the temperature of the peripheral wall 103, so that the temperature of the peripheral wall 103 is kept stable, thereby avoiding the occurrence of phenomena of dust deposition, coking and corrosion on the surface of the peripheral wall 103, and being beneficial to prolonging the service life of the combustion processor 100.
Thus, the method for treating incinerated refuse ash by using the combustion processor 100 according to the embodiment of the present invention has advantages of high decomposition rate of incinerated refuse ash, good cooling effect of the peripheral wall 103, and the like.
In some embodiments, the non-combustible powder blend, the pulverized coal, and the refuse-incinerated ash are mixed to adsorb heavy metal elements from the fused refuse-incinerated ash with the non-combustible powder blend before the refuse-incinerated ash and the pulverized coal are introduced into the combustion processor 100.
It can be understood that the main component of the incombustible powder blend is silicide, the incombustible powder blend is gradually melted in the combustion processor 100, the melted silicon oxide meets the heavy metal elements decomposed from the waste incineration ash, the silicon oxide can effectively wrap the heavy metal elements, the discharge of the heavy metal elements is reduced, and the degree of harmless treatment of the waste incineration ash is improved.
In some embodiments, the method of treating incinerated waste implemented with the combustion processor 100 further comprises a mixing device (not shown). The mixing device is used for mixing the refuse incineration ash and the coal powder and/or the refuse incineration ash and the mixture of the coal powder and the non-combustible powder. Therefore, the waste incineration ash and the coal powder and/or the waste incineration ash and the coal powder and the incombustible powder mixture can be uniformly mixed before being introduced into the combustion processor 100, and the combustion efficiency of the coal powder and the efficiency of the incombustible powder mixture for wrapping the heavy metal elements are favorably improved.
In some embodiments. The mass of the waste incineration ash accounts for 20-80% of the total mass of the waste incineration ash and the coal powder, and the mass of the waste incineration ash accounts for 20-80% of the total mass of the waste incineration ash, the coal powder and the incombustible powder mixture. Thus, the waste incineration ash can be sufficiently burned.
When the mass ratio of the waste incineration ash is 20%, the decomposition effect of the waste incineration ash is the best, but the cost is high.
When the mass ratio of the waste incineration ash is 80%, the decomposition effect of the waste incineration ash is relatively poor, but the cost is greatly reduced.
In some embodiments, the particle size of the waste incineration ash is between 50-250 microns, the particle size of the coal fines is between 50-250 microns, and the particle size of the non-combustible powder blend is between 50-250 microns. Therefore, the waste incineration ash and the coal powder are combusted more fully in the combustion processor 100, and the contact effect of the incombustible powder mixture and the heavy metal elements is better.
In some embodiments, as shown in fig. 3, the pulverized coal supply assembly 5 includes a pulverized coal pipe 51 and a return cap 52. The pulverized coal pipe 51 is disposed in the first chamber 102 along the axis of the first chamber 102, and the pulverized coal pipe 51 has an inlet end (e.g., the left end of the pulverized coal pipe 51 in fig. 3) and an outlet end (e.g., the right end of the pulverized coal pipe 51 in fig. 3). The temperature-adjusting air duct 3 is sleeved at the inlet end of the pulverized coal pipe 51, the backflow cap 52 is arranged at the outlet end of the pulverized coal pipe 51, the backflow cap 52 is substantially cylindrical, and the outlet of the backflow cap 52 faces the inlet end of the pulverized coal pipe 51.
Specifically, as shown in fig. 3, the pulverized coal pipe 51 has a straight pipe structure, and the mixture of the waste incineration ash, the pulverized coal and the non-combustible powder enters the pulverized coal pipe 51 from the left end of the pulverized coal pipe 51 under the driving of the airflow. The backflow cap 52 is disposed at the right end of the pulverized coal pipe 51, the left end of the backflow cap 52 is left open, the right end of the backflow cap 52 is closed, the powder rushes out from the right end of the pulverized coal pipe 51 and then impacts the right end of the backflow cap 52, and the reflected powder rushes out from the left end of the backflow cap 52 and flows into the first cavity 102.
The powder firstly impacts the right end of the backflow cap 52 and then is reflected into the first cavity 102, so that the particle size of the powder is smaller, the powder is finer, and the combustion efficiency is improved.
In some embodiments, as shown in fig. 4, the adherent wind duct 1 includes a cylinder 12 and a flexible portion 13 fitted over an outer circumferential surface of the cylinder 12.
The combustion processor 100 further comprises an adjusting assembly 7, the adjusting assembly 7 comprises an adjusting piece 71 and a sealing washer 72, the cylinder 12 is provided with a mounting hole 14, a first part of the adjusting piece 71 penetrates through the flexible portion 13 and is arranged in the mounting hole 14, a second part of the adjusting piece 71 is pressed on the outer circumferential surface of the flexible portion 13, and the sealing washer 72 is arranged between the second part of the adjusting piece 71 and the outer circumferential surface of the flexible portion 13.
Specifically, as shown in fig. 4, the adjusting member 71 may be a bolt, a first portion of the adjusting member 71 is a threaded portion of the bolt, and a second portion of the adjusting member 71 is a nut portion. The inner circumferential surface of the flexible portion 13 is connected to the outer circumferential surface of the cylinder 12, the mounting hole 14 is a threaded hole, the threaded portion of the adjuster 71 is disposed in the mounting hole 14, and the nut portion of the adjuster 71 is pressed against the flexible portion 13 by tightening the adjuster 71, so that the outer diameter of the flexible portion 13 is reduced (volume is reduced), thereby enlarging the gap between the outer circumferential surface of the flexible portion 13 and the circumferential wall 103, that is, enlarging the flow area of the adherent wind channel 11.
Wherein, the sealing washer 72 is arranged between the nut part of the adjusting part 71 and the flexible part 13, and the sealing washer 72 can be used for sealing the mounting hole 14, so that gas exchange does not occur between the adherence air channel 11 and the combustion-supporting air channel 21, which is beneficial to improving the sealing performance of the combustion processor 100. Meanwhile, the adjusting piece 71 is made of rigid material, and the sealing washer 72 prevents the adjusting piece 71 from being directly pressed on the flexible part 13, prevents the adjusting piece 71 from scratching the flexible part 13, and is beneficial to prolonging the service life of the flexible part 13.
The temperature adjusting gas in the embodiment of the present invention is used to adjust the combustion temperature in the first chamber 102, that is, when the combustion temperature in the first chamber 102 is higher than a preset value, an inert gas may be injected into the first chamber 102, and the inert gas is used to suppress the combustion degree in the first chamber 102, so as to reduce the combustion temperature in the first chamber 102. Wherein the inert gas comprises CO2、N2And one or more of other inert gases.
When the combustion temperature in the first chamber 102 is lower than the preset value, the oxidizing gas and/or the combustible gas may be injected into the first chamber 102, which is beneficial to increase the combustion temperature in the first chamber 102. Wherein the oxidizing gas comprises air and oxygen, and the combustible gas comprises H2、CH4And natural gas.
In some embodiments, as shown in fig. 3, the combustion processor 100 further comprises an impeller assembly 6, the combustion air passage 21, the temperature adjusting passage 32 and the temperature adjusting passage 32 are all provided with the impeller assembly 6, the impeller assembly 6 comprises a blade 61 and a telescopic rod 62 which are connected with each other, and the telescopic rod 62 is arranged along the axial direction of the first cavity 102.
Specifically, as shown in fig. 3, the telescopic rod 62 may be disposed in the gas passage along the axis of the first chamber 102, the left end of the telescopic rod 62 may be connected to the air duct forming the passage, the right end of the telescopic rod 62 is disposed with a blade 61, the blade 61 may rotate freely, the gas in the passage may flow through the blade 61 when entering the first chamber 102, and the blade 61 may rotate the gas flowing through the blade 61 and flow to the center of the first chamber 102. Therefore, the combustion-supporting gas, the temperature-adjusting gas and the waste gas are mixed more sufficiently, and the waste gas treatment effect is improved.
In some embodiments, as shown in fig. 5-7, the combustion processor 100 further comprises a coal dust separator 8, the coal dust separator 8 is disposed at the inlet end of the coal dust pipe 51, and the coal dust separator 8 is a throat-shaped separator 81, a gear-shaped separator 82, or a petal-shaped separator 83.
It is understood that the combustion processor 100 of the present embodiment may select different coal dust separators 8 according to different kinds of coal dust. Preferably, if it is a coal type having a high volatile content and a high calorific value, one of the throat-shaped separator 81 and the gear-shaped separator 82 is selected. If it is a coal type having low volatile components and a low calorific value, the petal-shaped separator 83 is selected.
In some embodiments, as shown in fig. 2, the temperature-adjusting air duct 3 has a first end (e.g., a left end of the temperature-adjusting air duct 3 in fig. 2) and a second end (e.g., a right end of the temperature-adjusting air duct 3 in fig. 2) that are opposite to each other in the axial direction of the pulverized coal duct 51. The first end of the temperature-adjusting air duct 3 is open, and the second end of the temperature-adjusting air duct 3 is provided with a plurality of through holes (not shown). The combustion processor 100 further includes a flame detector (not shown) and an igniter (not shown) which are provided in the temperature-adjusting air guide duct 3 and whose flame is injected into the first chamber 102 through the through-hole.
Specifically, as shown in fig. 2, the temperature-adjusting air duct 3 is substantially barrel-shaped, the right end of the temperature-adjusting air duct 3 is a circular plate-shaped structure, the right end of the temperature-adjusting air duct 3 faces the inside of the first cavity 102, and a flame detector and an igniter are disposed between the outer circumferential surface of the pulverized coal pipe 51 and the inner circumferential surface of the temperature-adjusting air duct 3, wherein the igniter is configured to ignite pulverized coal and exhaust gas in the first cavity 102, and the flame detector is configured to detect whether flame exists between the outer circumferential surface of the pulverized coal pipe 51 and the inner circumferential surface of the temperature-adjusting air duct 3, which is beneficial to improving the safety of the combustion processor 100.
In some embodiments, when the temperature of the peripheral wall 103 of the combustion processor 100 is higher than the preset temperature, the flexible portion of the adherence air duct 1 is compressed to expand the flow area of the adherence air channel 11, optionally, the preset temperature is 40 ℃, and when the temperature of the peripheral wall 103 is higher than 40 ℃, the flow area of the adherence air channel 11 can be expanded to increase the flow rate of air, which is beneficial to reduce the temperature of the peripheral wall 103 more quickly.
In some embodiments, the combustion temperature of the combustion processor is 900-1600 ℃, and the garbage incineration ash can be fully decomposed in the temperature range.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A combustion processor, comprising:
a housing having a first cavity and a perimeter wall enclosing the first cavity;
the wall-attached wind guide cylinder is arranged in the first cavity, and a wall-attached wind channel is formed between the peripheral surface of the wall-attached wind guide cylinder and the peripheral wall;
the combustion-supporting air duct is arranged in the first cavity, and a combustion-supporting air channel is formed between the outer peripheral surface of the combustion-supporting air duct and the inner peripheral surface of the wall-adhering air duct;
a pulverized coal supply assembly disposed within the first chamber;
the temperature-adjusting air duct is arranged in the first cavity and sleeved on the pulverized coal supply component, a transition channel is formed between the inner peripheral surface of the temperature-adjusting air duct and the outer peripheral surface of the pulverized coal supply component, and a temperature-adjusting channel is formed between the outer peripheral surface of the temperature-adjusting air duct and the inner peripheral surface of the combustion-supporting air duct.
2. The combustion processor of claim 1, wherein the pulverized coal supply assembly comprises a pulverized coal pipe and a backflow cap, the pulverized coal pipe is disposed in the first cavity along an axis of the first cavity, the pulverized coal pipe has an inlet end and an outlet end, the temperature-adjusting air duct is sleeved at the inlet end of the pulverized coal pipe, the backflow cap is disposed at the outlet end of the pulverized coal pipe, the backflow cap is substantially cylindrical, and an outlet of the backflow cap faces the inlet end of the pulverized coal pipe.
3. The combustion processor of claim 2 further comprising an impeller assembly, said impeller assembly being disposed in each of said combustion air passage and said tempering passage, said impeller assembly comprising a blade and a telescoping rod connected to each other, said telescoping rod being disposed axially of said first chamber.
4. The combustion processor of claim 1, wherein the wall-mounted air duct comprises a barrel and a flexible portion sleeved on an outer peripheral surface of the barrel, the exhaust gas processor further comprises an adjusting assembly, the adjusting assembly comprises an adjusting piece and a sealing washer, a mounting hole is formed in the barrel, a first portion of the adjusting piece penetrates through the flexible portion and is arranged in the mounting hole, a second portion of the adjusting piece is pressed on an outer peripheral surface of the flexible portion, and the sealing washer is arranged between the second portion of the adjusting piece and the outer peripheral surface of the flexible portion.
5. The combustion processor as claimed in claim 1, wherein the temperature-adjusting air duct has a first end and a second end opposite to each other in an axial direction of the pulverized coal duct, the first end of the temperature-adjusting air duct is open, a plurality of through holes are provided on the second end of the temperature-adjusting air duct, the exhaust gas processor further includes a flame detector and an igniter, the flame detector and the igniter are provided in the temperature-adjusting air duct, and a flame of the igniter penetrates through the through holes and then enters the first chamber.
6. A method of treating incinerated refuse using the combustion processor according to any one of claims 1 to 5, comprising the steps of:
determining the combustion temperature of the combustion processor according to the components of the waste incineration ash;
the waste incineration ash and the coal dust enter the combustion processor through the coal dust supply assembly;
the air is divided into two paths to enter the combustion processor, wherein one path of air enters the combustion processor through a combustion-supporting air channel, the other path of air enters the combustion processor through an adherence air channel and forms adherence air, and at least one part of the adherence air flows along the peripheral wall of the combustion processor to form a cooling layer; and
igniting the pulverized coal and the waste incineration ash in the combustion processor.
7. The method of treating incinerated garbage according to claim 6, further comprising: before the refuse-incinerated ash and the pulverized coal enter the combustion processor, mixing a non-combustible powder blend, the pulverized coal and the refuse-incinerated ash so as to adsorb heavy metal elements formed by melting the refuse-incinerated ash by using the non-combustible powder blend, wherein optionally, the mass of the refuse-incinerated ash accounts for 20-80% of the total mass of the refuse-incinerated ash, the pulverized coal and the non-combustible powder blend, the particle size of the refuse-incinerated ash is 50-250 micrometers, the particle size of the pulverized coal is 50-250 micrometers, and the particle size of the non-combustible powder blend is 50-250 micrometers.
8. The method of claim 6, wherein the mass of the waste incineration ash is 20% to 80% of the total mass of the waste incineration ash and the pulverized coal.
9. The method of claim 7, wherein the flexible portion of the adherent wind duct is compressed to expand a flow area of the adherent wind channel when a temperature of a peripheral wall of the combustion processor is higher than a preset temperature, optionally the preset temperature is 40 ℃.
10. The method for treating incinerated garbage according to any one of claims 1 to 9, wherein the combustion temperature of the combustion processor is 900-1600 ℃.
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| CN202110064060.XA CN112856439A (en) | 2021-01-18 | 2021-01-18 | Combustion processor and method for treating refuse incineration ash |
| PCT/CN2022/072508 WO2022152311A1 (en) | 2021-01-18 | 2022-01-18 | Waste gas/waste liquid/solid waste combustion treatment device and use method therefor |
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| CN202110064060.XA CN112856439A (en) | 2021-01-18 | 2021-01-18 | Combustion processor and method for treating refuse incineration ash |
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