CN112856454A - Exhaust gas treatment device and exhaust gas treatment method - Google Patents
Exhaust gas treatment device and exhaust gas treatment method Download PDFInfo
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- CN112856454A CN112856454A CN202110062299.3A CN202110062299A CN112856454A CN 112856454 A CN112856454 A CN 112856454A CN 202110062299 A CN202110062299 A CN 202110062299A CN 112856454 A CN112856454 A CN 112856454A
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- air duct
- air
- exhaust gas
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- waste gas
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- 238000000034 method Methods 0.000 title claims description 11
- 239000003245 coal Substances 0.000 claims abstract description 107
- 230000002093 peripheral effect Effects 0.000 claims abstract description 71
- 239000002912 waste gas Substances 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 230000001464 adherent effect Effects 0.000 claims abstract description 6
- 230000007704 transition Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 94
- 238000002485 combustion reaction Methods 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 7
- 238000004939 coking Methods 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000000151 deposition Methods 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 4
- 238000003672 processing method Methods 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process 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
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005496 tempering 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
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
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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
- F23G5/44—Details; Accessories
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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
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
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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
- F23G5/50—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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a waste gas processor and a waste gas processing method, wherein the waste gas processor comprises a shell, a first air duct, a second air duct, a pulverized coal supply component and a third air duct, the shell is provided with a first cavity and a peripheral wall enclosing the first cavity, the first air duct is arranged in the first cavity, an adherence air channel is formed between the outer peripheral surface of the first air duct and the peripheral wall, the second air duct is arranged in the first cavity, a temperature adjusting channel is formed between the outer peripheral surface of the second air duct and the inner peripheral surface of the first air duct, the pulverized coal supply component is arranged in the first cavity, the third air duct is sleeved on the pulverized coal supply component, a transition channel is formed between the inner peripheral surface of the third air duct and the outer peripheral surface of the pulverized coal supply component, and a waste gas channel is formed between the outer peripheral surface of the third air duct and the inner peripheral surface of. The adherent wind in the adherent wind channel in the waste gas processor flows along the peripheral wall of the first cavity to form a cooling layer, thereby avoiding 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 industrial waste gas treatment, in particular to a waste gas processor and a waste gas treatment method implemented by using the waste gas processor.
Background
Industrial waste gas is a generic term for various pollutant-containing gases discharged into the air during the combustion and production processes of fuels in the factory area of an enterprise. The treatment method of the waste gas containing the fluoride mainly adopts combustion treatment, and the waste gas containing the fluoride can be decomposed into gas which can be directly recycled and treated or gas which can be directly discharged after combustion.
However, the existing industrial waste gas combustion treatment equipment has the problems of large volume, small treatment force, incomplete reaction and the like.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of one aspect of the invention provides an exhaust gas processor, which introduces air into the exhaust gas processor through a wall-attached air channel, wherein the air flows along the inner wall surface of the exhaust gas processor and forms a cooling layer, so that the temperature of the peripheral wall of the exhaust gas processor can be well reduced, and the phenomena of dust deposition, coking and corrosion on the surface of the peripheral wall are avoided.
An embodiment of another aspect of the invention provides an exhaust gas treatment method implemented by the exhaust gas treatment device.
An exhaust gas processor according to an embodiment of the first aspect of the invention includes: a housing having a first cavity and a perimeter wall enclosing the first cavity; the first air duct is arranged in the first cavity, and an adherence air channel is formed between the peripheral surface of the first air duct and the peripheral wall; the second air duct is arranged in the first cavity, and a temperature adjusting channel is formed between the outer peripheral surface of the second air duct and the inner peripheral surface of the first air duct; a pulverized coal supply assembly disposed within the first chamber; and the third air duct is arranged in the first cavity, the third air duct is sleeved on the pulverized coal supply assembly, a transition channel is formed between the inner peripheral surface of the third air duct and the outer peripheral surface of the pulverized coal supply assembly, and a waste gas channel is formed between the outer peripheral surface of the third air duct and the inner peripheral surface of the second air duct.
According to the waste gas processor provided by the embodiment of the invention, the first air duct, the second air duct, the third air duct and the coal powder supply assembly are arranged in the first cavity in a sleeved mode, the coal powder supply assembly is arranged along the axial direction of the first cavity, the axis of the coal powder supply assembly is approximately coincident with the axis of the first cavity, the third air duct is sleeved on the coal powder supply assembly in the radial direction of the first cavity, the second air duct is sleeved on the third air duct, the first air duct is sleeved on the second air duct, an adherence air channel can be formed between the first air duct and the peripheral wall of the first cavity, when the waste gas processor is used, air can be introduced into the first cavity through the adherence air channel according to the temperature of the peripheral wall of the waste gas processor, the air can flow along the peripheral wall to form an air cooling layer, and the temperature of the peripheral wall can be well reduced by the air cooling layer, 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 waste gas processor is prolonged.
In some embodiments, the exhaust gas processor further includes a fourth air duct disposed in the first cavity, the fourth air duct is located between the first air duct and the second air duct in an inside-outside direction, a combustion air channel is formed between an outer circumferential surface of the fourth air duct and an inner circumferential surface of the first air duct, and a temperature adjusting channel is formed between the inner circumferential surface of the fourth air duct and the outer circumferential surface of the second air duct.
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 third air duct being sleeved at the inlet end of the pulverized coal pipe, and a backflow cap disposed at the outlet end of the pulverized coal pipe, the backflow cap being substantially cylindrical, an outlet of the backflow cap facing the inlet end of the pulverized coal pipe.
In some embodiments, the exhaust gas processor further includes an impeller assembly, the impeller assembly is disposed in each of the combustion air passage, the temperature adjusting passage and the exhaust gas passage, the impeller assembly includes a blade and a telescopic rod connected to each other, and the telescopic rod is disposed along an axial direction of the first chamber.
In some embodiments, the first air duct includes a barrel and a flexible portion sleeved on an outer circumferential surface of the barrel, the exhaust gas processor further includes an adjusting assembly, the adjusting assembly includes 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 circumferential surface of the flexible portion, and the sealing washer is arranged between the second portion of the adjusting piece and the outer circumferential surface of the flexible portion.
In some embodiments, the exhaust gas processor further comprises a pulverized coal separator, the pulverized coal separator is arranged at the inlet end of the pulverized coal pipe, and the pulverized coal separator is a throat-shaped separator, a gear-shaped separator or a petal-shaped separator.
In some embodiments, the third air duct has a first end and a second end opposite to each other in the axial direction of the pulverized coal pipe, the first end of the third air duct is open, the second end of the third 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 disposed in the third air duct, and a flame of the igniter penetrates through the through holes and then enters the first cavity.
According to an embodiment of the second aspect of the present invention, the exhaust gas treatment method implemented by using the exhaust gas treatment device of any one of the above embodiments includes the steps of:
determining the combustion temperature in the waste gas processor according to the heat value and the gas quantity of the waste gas and the selected coal type; the waste gas enters the waste gas processor through a waste gas channel; coal powder enters the waste gas processor through the coal powder supply assembly; the air is divided into two paths to enter the waste gas processor, wherein one path of air enters the waste gas processor through a combustion-supporting air channel, the other path of air enters the waste gas processor through a wall-adhering air channel and forms wall-adhering air, and at least one part of the wall-adhering air flows along the peripheral wall of the waste gas processor to form a cooling layer; and igniting the pulverized coal and the exhaust gas in the exhaust gas processor.
According to the waste gas treatment method provided by the embodiment of the invention, air is introduced into the waste gas treatment device through the wall-attached air channel, and the air can flow along the peripheral wall of the waste gas treatment device to form the air cooling layer, so that the temperature of the peripheral wall can be well reduced, the temperature of the peripheral wall is kept stable, the phenomena of ash deposition, coking and corrosion on the surface of the peripheral wall are avoided, and the service life of the waste gas treatment device is prolonged.
In some embodiments, when the temperature of the peripheral wall of the exhaust gas processor is higher than a preset temperature, the flexible portion of the first air duct is compressed to expand the flow area of the adherent wind channel, optionally, the preset temperature is 40 ℃.
In some embodiments, the corresponding coal dust separator is selected according to the coal type of the coal dust, the coal dust separator is a throat-shaped separator, a gear-shaped separator or a petal-shaped separator, and optionally, the waste gas is fluoride-containing waste gas.
Drawings
FIG. 1 is a perspective view of an exhaust processor according to one embodiment of the present disclosure.
FIG. 2 is a perspective view of an exhaust processor according to another embodiment of the present disclosure.
FIG. 3 is a cross-sectional view of the exhaust processor of FIG. 2.
FIG. 4 is a schematic illustration of an impeller assembly in an exhaust processor according to an embodiment of the present disclosure.
FIG. 5 is a schematic diagram of a conditioning assembly in an exhaust processor according to an embodiment of the present disclosure.
FIG. 6 is a schematic illustration of a throat-shaped separator in an exhaust gas processor according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of a gear-type separator in an exhaust processor according to an embodiment of the invention.
FIG. 8 is a schematic diagram of a petal separator in an exhaust processor in accordance with an embodiment of the present invention.
Reference numerals:
the device comprises an exhaust gas processor 100, a shell 101, a first cavity 102, a peripheral wall 103, a first air duct 1, an adherence air channel 11, a cylinder 12, a flexible part 13, a mounting hole 14, a second air duct 2, a temperature adjusting channel 21, a third air duct 3, a transition channel 31, an exhaust gas channel 32, a fourth air duct 4, a combustion-supporting air channel 41, a pulverized coal supply assembly 5, a pulverized coal pipe 51, a backflow cap 52, an impeller assembly 6, blades 61, an expansion link 62, a regulating assembly 7, a regulating part 71, a sealing washer 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 8, an exhaust gas processor 100 according to an embodiment of the present invention includes a housing 101, a first air duct 1, a second air duct 2, a third air duct 3, and a pulverized coal supply assembly 5. The housing 101 has a first chamber 102 and a peripheral wall 103 enclosing the first chamber 102.
The first air duct 1 is arranged in the first cavity 102, an adherence air channel 11 is formed between the outer peripheral surface of the first air duct 1 and the peripheral wall 103, the second air duct 2 is arranged in the first cavity 102, a temperature adjusting channel 21 is formed between the outer peripheral surface of the second air duct 2 and the inner peripheral surface of the first air duct 1, the pulverized coal supply component 5 is arranged in the first cavity 102, the third 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 third air duct 3 and the outer peripheral surface of the pulverized coal supply component 5, and an exhaust gas channel 32 is formed between the outer peripheral surface of the third air duct 3 and the inner peripheral surface of the second air duct 2.
Specifically, as shown in fig. 1 to 3, the left end and the right end of the casing 101 are substantially cylindrical, the middle section of the casing 101 is substantially conical, and the first air duct 1, the second air duct 2, the third air duct 3 and the pulverized coal supply assembly 5 are all disposed in the first cavity 102.
The pulverized coal supply assembly 5 is horizontally arranged in the left-right direction, the axis of the pulverized coal supply assembly 5 is approximately overlapped with the axis of the first cavity 102, namely the pulverized coal supply assembly 5 is located in the middle of the first cavity 102, therefore, pulverized coal can be enabled to enter the first cavity 102 through the pulverized coal supply assembly 5 and then is located in the middle of the first cavity 102, pulverized coal combustion is enabled to be more sufficient, and utilization rate of the pulverized coal is improved.
The first air duct 1, the second air duct 2 and the third air duct 3 are all arranged on the inner side of the left end of the shell 101, wherein the third air duct 3 is sleeved on the left end of the pulverized coal supply component 5, the second air duct 2 is sleeved on the third air duct 3, the first air duct 1 is sleeved on the second air duct 2, and in the axial direction of the first cavity 102, the right end of the first air duct 1, the right end of the second air duct 2 and the right end of the third air duct 3 are substantially aligned. Therefore, air introduced into the first cavity 102 from the adherence air channel 11, temperature-adjusting gas introduced into the first cavity 102 from the temperature-adjusting channel 21 and waste gas introduced into the first cavity 102 from the waste gas channel 32 cannot interfere with each other when entering the first cavity 102, so that the temperature-adjusting gas and the waste gas can better flow into the first cavity 102, the temperature-adjusting gas and the waste gas can be fully combusted, and the waste gas treatment efficiency 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 to form an air cooling layer, which 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 exhaust gas processor is prolonged.
Therefore, the exhaust gas treatment device 100 according to the embodiment of the present invention has advantages of sufficient exhaust gas combustion, good cooling effect of the peripheral wall 103, and the like.
In some embodiments, as shown in fig. 2 to 3, the exhaust gas processor 100 further includes a fourth air guiding duct 4, the fourth air guiding duct 4 is disposed in the first cavity 102, and the fourth air guiding duct 4 is located between the first air guiding duct 1 and the second air guiding duct 2 in the inward and outward direction. A combustion air passage 41 is formed between the outer peripheral surface of the fourth air guide duct 4 and the inner peripheral surface of the first air guide duct 1, and a temperature control passage 21 is formed between the inner peripheral surface of the fourth air guide duct 4 and the outer peripheral surface of the second air guide duct 2.
Specifically, as shown in fig. 2 and 3, the fourth air guide duct 4 is added between the first air guide duct 1 and the second air guide duct 2, so that the existing temperature adjusting passage 21 between the first air guide duct 1 and the second air guide duct 2 can be further divided into the combustion air passage 41 and the temperature adjusting passage 21. The air can be introduced into the first cavity 102 from the combustion-supporting air channel 41, and the air is mixed with the temperature-adjusting gas, so that the combustion efficiency of the pulverized coal in the first cavity 102 is improved, the combustion in the first cavity 102 is more stable, and the combustion effect of the waste gas is better.
It is understood that the above-mentioned tempering gas includes one or more of an oxidizing gas, a combustible gas and an inert gas.
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.
Preferably, the temperature of the combustion zone within the exhaust gas treatment device 100 of the embodiment of the present invention is controlled to be between 700 ℃ and 1600 ℃, and the fluoride-containing exhaust gas can be sufficiently combusted in the temperature range.
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 third 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 is a straight pipe structure, pulverized coal enters the pulverized coal pipe 51 from the left end of the pulverized coal pipe 51 under the driving of the airflow, and the pulverized coal moves rightward in the pulverized coal pipe 51. The backflow cap 52 is arranged 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, pulverized coal rushes out from the right end of the pulverized coal pipe 51 and then collides against the right end of the backflow cap 52, and the reflected pulverized coal rushes out from the left end of the backflow cap 52 and flows to the inside of the first cavity 102.
The pulverized coal 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 pulverized coal is smaller, the pulverized coal is finer, and the pulverized coal combustion efficiency is improved. Meanwhile, the reflected coal powder can be dispersed in the first cavity 102, so that the coal powder is more fully contacted with the waste gas, and the waste gas can be fully combusted.
In some embodiments, as shown in fig. 4, the exhaust gas processor 100 further includes an impeller assembly 6, the impeller assembly 6 is disposed in each of the combustion air passage 41, the temperature adjusting passage 21 and the exhaust gas passage 32, the impeller assembly 6 includes a blade 61 and a telescopic rod 62 connected to each other, and the telescopic rod 62 is disposed along an axial direction of the first chamber 102.
Specifically, as shown in fig. 4, 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, the first air guiding duct 1 includes a cylindrical body 12 and a flexible portion 13 fitted over an outer circumferential surface of the cylindrical body 12.
Specifically, as shown in fig. 5, 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 41, which is beneficial to improving the sealing performance of the exhaust gas 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.
In some embodiments, as shown in fig. 6-8, the exhaust gas processor 100 further comprises a pulverized coal separator 8, the pulverized coal separator 8 is disposed at the inlet end of the pulverized coal pipe 51, and the pulverized coal separator 8 is a throat-shaped separator 81, a gear-shaped separator 82, or a petal-shaped separator 83.
It is understood that the exhaust gas treatment device 100 according to the embodiment of the present invention may select different pulverized coal separators 8 according to different kinds of pulverized coal. 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. 3, the third air duct 3 has a first end (e.g., a left end of the third air duct 3 in fig. 3) and a second end (e.g., a right end of the third air duct 3 in fig. 3) which are opposite to each other along the axial direction of the pulverized coal pipe 51. The first end of the third air guiding duct 3 is open, and a plurality of through holes (not shown) are formed on the second end of the third air guiding duct 3. The exhaust gas treating apparatus 100 further includes a flame detector (not shown) and an igniter (not shown) which are provided in the third air guide duct 3 and whose flame is injected into the first chamber 102 through the through hole.
Specifically, as shown in fig. 3, the third air duct 3 is substantially barrel-shaped, the right end of the third air duct 3 is a circular plate-shaped structure, the right end of the third 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 third 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 third air duct 3, which is beneficial to improving the safety of the exhaust gas processor 100.
The exhaust gas treatment method implemented by the exhaust gas treatment device 100 of the embodiment of the present invention includes the steps of:
the combustion temperature in the exhaust gas processor 100 is determined according to the heat value, the gas amount and the selected coal type of the exhaust gas, and preferably, the combustion temperature in the first chamber 102 is controlled between 700 ℃ and 1600 ℃ when the fluoride-containing exhaust gas is processed.
The exhaust gas enters the exhaust gas processor 100 through the exhaust gas passage 32, and the pulverized coal enters the exhaust gas processor 100 through the pulverized coal supply assembly 5.
The air is divided into two paths to enter the waste gas processor 100, wherein one path of air enters the waste gas processor 100 through the combustion-supporting air channel 41, the other path of furnace air enters the waste gas processor 100 through the wall-adhering air channel 11 and forms wall-adhering air, at least one part of the wall-adhering air flows along the peripheral wall 103 of the waste gas processor 100 to form a cooling layer, and the pulverized coal and the waste gas in the waste gas processor 100 are ignited.
In some embodiments, when the temperature of the peripheral wall 103 of the exhaust gas treatment device 100 is higher than a preset temperature, the flexible portion of the first air duct 1 is compressed to enlarge the flow area of the wall-attached air channel 11, optionally, the preset temperature is 40 ℃. When the temperature of the peripheral wall 103 is higher than 40 ℃, the flow area of the adherent air channel 11 can be enlarged, the flow rate of air is increased, and the temperature of the peripheral wall 103 can be reduced more quickly.
In some embodiments, the corresponding coal dust separator 8 is selected according to the coal type of the coal dust, and the coal dust separator 8 is a throat-shaped separator 81, a gear-shaped separator 82 or a petal-shaped separator 83, and optionally, the waste gas is fluoride-containing waste gas.
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. An exhaust gas processor, comprising:
a housing having a first cavity and a perimeter wall enclosing the first cavity;
the first air duct is arranged in the first cavity, and an adherence air channel is formed between the peripheral surface of the first air duct and the peripheral wall;
the second air duct is arranged in the first cavity, and a temperature adjusting channel is formed between the outer peripheral surface of the second air duct and the inner peripheral surface of the first air duct;
a pulverized coal supply assembly disposed within the first chamber; and
the third air duct is arranged in the first cavity and sleeved on the pulverized coal supply assembly, a transition channel is formed between the inner peripheral surface of the third air duct and the outer peripheral surface of the pulverized coal supply assembly, and a waste gas channel is formed between the outer peripheral surface of the third air duct and the inner peripheral surface of the second air duct.
2. The exhaust gas processor according to claim 1, further comprising a fourth air duct disposed in the first chamber, the fourth air duct being located between the first air duct and the second air duct in an inside-outside direction, a combustion air passage being formed between an outer peripheral surface of the fourth air duct and an inner peripheral surface of the first air duct, and a temperature adjustment passage being formed between the inner peripheral surface of the fourth air duct and an outer peripheral surface of the second air duct.
3. The exhaust gas processor of any of claims 1 or 2, wherein the pulverized coal supply assembly includes a pulverized coal pipe disposed in the first chamber along an axis of the first chamber, the pulverized coal pipe having an inlet end and an outlet end, the third air duct being sleeved at the inlet end of the pulverized coal pipe, and a backflow cap disposed at the outlet end of the pulverized coal pipe, the backflow cap being substantially cylindrical, an outlet of the backflow cap facing the inlet end of the pulverized coal pipe.
4. The exhaust gas processor according to claim 3, further comprising an impeller assembly, wherein the impeller assembly is disposed in each of the combustion air passage, the temperature adjusting passage and the exhaust gas passage, and the impeller assembly comprises a blade and a telescopic rod connected to each other, and the telescopic rod is disposed along an axial direction of the first chamber.
5. The exhaust gas processor of claim 3, wherein the first air duct includes a cylindrical body and a flexible portion sleeved on an outer circumferential surface of the cylindrical body, the exhaust gas processor further includes an adjusting assembly, the adjusting assembly includes an adjusting piece and a sealing washer, the cylindrical body 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 an outer circumferential surface of the flexible portion, and the sealing washer is arranged between the second portion of the adjusting piece and the outer circumferential surface of the flexible portion.
6. The exhaust gas processor of claim 3, further comprising a pulverized coal separator disposed at an inlet end of the pulverized coal pipe, the pulverized coal separator being a throat-shaped separator, a gear-shaped separator, or a petal-shaped separator.
7. The exhaust gas processor of claim 3, wherein the third air guiding duct has a first end and a second end opposite to each other along an axial direction of the pulverized coal pipe, the first end of the third air guiding duct is open, a plurality of through holes are formed in the second end of the third air guiding duct, the exhaust gas processor further includes a flame detector and an igniter, the flame detector and the igniter are disposed in the third air guiding duct, and a flame of the igniter penetrates through the through holes and then enters the first cavity.
8. An exhaust gas treatment method implemented using the exhaust gas processor according to any one of claims 1 to 7, comprising the steps of:
determining the combustion temperature in the waste gas processor according to the heat value and the gas quantity of the waste gas and the selected coal type;
the waste gas enters the waste gas processor through a waste gas channel;
coal powder enters the waste gas processor through the coal powder supply assembly;
the air is divided into two paths to enter the waste gas processor, wherein one path of air enters the waste gas processor through a combustion-supporting air channel, the other path of air enters the waste gas processor through a wall-adhering air channel and forms wall-adhering air, and at least one part of the wall-adhering air flows along the peripheral wall of the waste gas processor to form a cooling layer; and
igniting the pulverized coal and the exhaust gas in the exhaust gas processor.
9. The exhaust gas treatment method of claim 8, wherein the flexible portion of the first air duct is compressed to expand a flow area of the adherent wind channel when a temperature of the peripheral wall of the exhaust gas treatment device is higher than a preset temperature, optionally the preset temperature is 40 ℃.
10. The exhaust gas treatment method according to claim 9, characterized by comprising: and selecting a corresponding coal powder separator according to the coal type of the coal powder, wherein the coal powder separator is a throat-shaped separator, a gear-shaped separator or a petal-shaped separator, and optionally, the waste gas is waste gas containing fluoride.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062299.3A CN112856454A (en) | 2021-01-18 | 2021-01-18 | Exhaust gas treatment device and exhaust gas treatment method |
| 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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| Application Number | Priority Date | Filing Date | Title |
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| CN202110062299.3A CN112856454A (en) | 2021-01-18 | 2021-01-18 | Exhaust gas treatment device and exhaust gas treatment method |
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| CN112856454A true CN112856454A (en) | 2021-05-28 |
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Cited By (1)
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| WO2022152311A1 (en) * | 2021-01-18 | 2022-07-21 | 煤科院节能技术有限公司 | Waste gas/waste liquid/solid waste combustion treatment device and use method therefor |
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