CN113932236B - RCO waste gas treatment device and treatment method thereof - Google Patents
RCO waste gas treatment device and treatment method thereof Download PDFInfo
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- CN113932236B CN113932236B CN202111069998.7A CN202111069998A CN113932236B CN 113932236 B CN113932236 B CN 113932236B CN 202111069998 A CN202111069998 A CN 202111069998A CN 113932236 B CN113932236 B CN 113932236B
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- 239000002912 waste gas Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000009825 accumulation Methods 0.000 claims abstract description 135
- 230000003197 catalytic effect Effects 0.000 claims abstract description 114
- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 238000005192 partition Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 54
- 238000010926 purge Methods 0.000 claims description 52
- 239000012855 volatile organic compound Substances 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 11
- 238000006555 catalytic reaction Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 description 17
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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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
- F23G5/46—Recuperation of heat
-
- 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
- F23G2202/00—Combustion
- F23G2202/60—Combustion in a catalytic combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Incineration Of Waste (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The application discloses an RCO waste gas treatment device and a treatment method thereof, wherein the RCO waste gas treatment device comprises a box body, wherein a heat accumulation area, a catalytic area and a heating area are sequentially arranged in the box body from bottom to top; the inside of the box body is provided with a partition piece, the partition piece divides the heat accumulation area and the catalytic area into a first heat accumulation area, a second heat accumulation area, a first catalytic area and a second catalytic area which are bilaterally symmetrical, and the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area are sequentially communicated; the bottom of the first heat accumulation area is provided with a first communication part, and the bottom of the second heat accumulation area is provided with a second communication part. The application reduces the volume of the RCO waste gas treatment device and reduces the occupied area and the equipment cost.
Description
Technical Field
The application relates to the technical field of RCO waste gas treatment, in particular to an RCO waste gas treatment device and a treatment method thereof.
Background
RCO is also called a Regenerative Catalytic Oxidation (RCO) and is a relatively common exhaust gas treatment device for exhaust gas containing VOCs (volatile organic compounds). The conventional RCO exhaust gas treatment device comprises a heat accumulation area, a catalytic area and a heating area, wherein the exhaust gas is preheated to about 300 ℃ through the heat accumulation area, and then is combusted in the heating area under the catalysis of a catalyst in the catalytic area, so that the exhaust gas is decomposed into CO2 and H2O through catalytic combustion reaction. The existing RCO waste gas treatment device is huge in size, so that the occupied area is huge, and the equipment cost of enterprises is increased in an intangible way.
Disclosure of Invention
The application aims to design an RCO waste gas treatment device and a treatment method thereof, so that the volume of the RCO waste gas treatment device is reduced, and the occupied area and the equipment cost are reduced.
In order to achieve the above purpose, the application provides an RCO waste gas treatment device, which comprises a box body, wherein a heat accumulation area, a catalytic area and a heating area are sequentially arranged in the box body from bottom to top; the inside of the box body is provided with a partition piece, the partition piece divides the heat accumulation area and the catalytic area into a first heat accumulation area, a second heat accumulation area, a first catalytic area and a second catalytic area which are bilaterally symmetrical, and the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area are sequentially communicated; the bottom of the first heat accumulation area is provided with a first communication part, and the bottom of the second heat accumulation area is provided with a second communication part.
Further, the first communication part comprises a first air inlet hole and a first air outlet hole, and the second communication part comprises a second air inlet hole and a second air outlet hole.
Further, the device also comprises an air inlet pipeline and an air exhaust pipeline which are arranged at the bottom of the box body;
the air inlet pipeline comprises a main air inlet pipe, a first air inlet pipe and a second air inlet pipe, and an air supply device is arranged on the main air inlet pipe; the output end of the main air inlet pipe is communicated with the input ends of the first air inlet pipe and the second air inlet pipe, the output end of the first air inlet pipe is communicated with the first air inlet hole, and the output end of the second air inlet pipe is communicated with the second air inlet hole; the first air inlet pipe is provided with a first air inlet valve, and the second air inlet pipe is provided with a second air inlet valve;
the exhaust pipeline comprises a main exhaust pipe, a first exhaust pipe and a second exhaust pipe, wherein the input end of the main exhaust pipe is communicated with the output ends of the first exhaust pipe and the second exhaust pipe, the input end of the first exhaust pipe is communicated with the first exhaust hole, and the input end of the second exhaust pipe is communicated with the second exhaust hole; the main exhaust pipe is provided with a main exhaust valve, the first exhaust pipe is provided with a first exhaust valve, and the second exhaust pipe is provided with a second exhaust valve.
Further, the first air inlet valve, the second air inlet valve, the main exhaust valve, the first exhaust valve and the second exhaust valve are all arranged outside the bottom side of the box body.
Further, the air supply device also comprises a purging pipeline, wherein one end of the purging pipeline is connected with the air inlet end of the air supply device; the other end of the purging pipeline is connected to the connection part of the main exhaust pipe, the first exhaust pipe and the second exhaust pipe; and a purging valve is arranged on the purging pipeline.
Further, an air deflector is arranged at the top of the partition piece and used for prolonging the moving path of the waste gas in the heating area.
Further, the section of the air deflector is designed as an obtuse isosceles triangle, and the obtuse end of the air deflector is fixedly connected with the partition piece.
Further, heat accumulators are arranged in the first heat accumulation area and the second heat accumulation area, and the heat accumulators are used for storing heat released during the decomposition of the waste gas. Specifically, the heat accumulator is a ceramic heat accumulator.
In order to achieve the above object, the present application further provides a RCO exhaust gas treatment method, including the above RCO exhaust gas treatment device, and further including a first RCO treatment stage, a second RCO treatment stage, a third RCO treatment stage, and a fourth RCO treatment stage;
wherein,,
the first RCO treatment stage includes passing exhaust gas through the first heat accumulation zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat accumulation zone in that order;
the second RCO treatment stage includes circulating the exhaust gas through the first heat accumulation zone, the first catalytic zone, the heating zone, the second catalytic zone, the second heat accumulation zone, and the first heat accumulation zone, and after a first preset time, sequentially passing through the second heat accumulation zone, the second catalytic zone, the heating zone, the first catalytic zone, and the first heat accumulation zone;
the third RCO treatment stage includes circulating the exhaust gas through the second heat accumulation zone, the second catalytic zone, the heating zone, the first catalytic zone, the first heat accumulation zone, and the second heat accumulation zone, and after a second preset time, sequentially passing through the first heat accumulation zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat accumulation zone;
the fourth RCO treatment stage includes cyclically repeating the second RCO treatment stage and the third RCO treatment stage until exhaust gas treatment is completed.
Specifically, the first RCO processing stage includes the following steps:
closing the first air inlet valve, the second air inlet valve, the main exhaust valve, the first exhaust valve, the second exhaust valve and the purge valve, and starting the first heat accumulation area, the second heat accumulation area and the heating area for preheating;
opening the first air inlet valve, the second air outlet valve and the main air outlet valve, and under the driving action of an air supply device, enabling the waste gas containing VOCs to enter the RCO waste gas treatment device through the first air inlet pipe, then sequentially passing through the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area, and finally discharging from the second exhaust pipe; the waste gas is preheated and heated in the first heat accumulation area and the heating area respectively, and RCO treatment is carried out under the catalysis of the catalyst in the second catalytic area; the heat of the treated waste gas is stored in a heat accumulator of the second heat accumulation area;
specifically, the second RCO processing stage includes the following steps:
closing the main exhaust valve, opening the purge valve, and under the driving action of the air supply device, the exhaust gas discharged in the previous stage circulates through the purge pipeline, the main air inlet pipe, the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area, the second heat accumulation area, the second exhaust pipe and the purge pipeline; the exhaust gas is utilized to purge VOCs remained in the first heat accumulation area in the previous stage;
after the first preset time, closing the purge valve, the first air inlet valve and the second air outlet valve, opening the main air outlet valve, the second air inlet valve and the first air outlet valve, enabling the waste gas to enter the RCO waste gas treatment device through a second air inlet pipe under the driving action of the air supply device, then sequentially passing through the second heat accumulation area, the second catalytic area, the heating area, the first catalytic area and the first heat accumulation area, and finally discharging from a first exhaust pipe; the waste gas is preheated and heated in the second heat accumulation area and the heating area respectively, and RCO treatment is carried out under the catalysis of the catalyst of the first catalytic area; the heat of the treated waste gas is stored in a heat accumulator of the first heat accumulation area;
specifically, the third RCO processing stage includes the following steps:
closing the main exhaust valve, opening the purge valve, and under the driving action of the air supply device, the exhaust gas discharged in the previous stage circulates through the purge pipeline, the main air inlet pipe, the second heat accumulation area, the second catalytic area, the heating area, the first catalytic area, the first heat accumulation area, the first exhaust pipe and the purge pipeline; the exhaust gas is utilized to purge VOCs remained in the second heat accumulation area in the previous stage;
after the second preset time, closing the purge valve, the second air inlet valve and the first air outlet valve, opening the main air outlet valve, the first air inlet valve and the second air outlet valve, enabling the waste gas to enter the RCO waste gas treatment device through a first air inlet pipe under the driving action of the air supply device, then sequentially passing through the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area, and finally discharging from a second air outlet pipe; the waste gas is preheated and heated in the first heat accumulation area and the heating area respectively, and RCO treatment is carried out under the catalysis of the catalyst in the second catalytic area; the heat of the treated exhaust gas is stored in the heat accumulator of the second heat accumulation area.
Compared with the prior art, the application has the beneficial effects that:
dividing the heat accumulation area and the catalytic area into a first heat accumulation area, a second heat accumulation area, a first catalytic area and a second catalytic area which are bilaterally symmetrical by arranging a partition piece in the box body, so that two RCO treatment directions are formed, wherein one RCO treatment direction sequentially passes through the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area; and secondly, the waste gas passes through the second heat accumulation area, the second catalytic area, the heating area, the first catalytic area and the first heat accumulation area in sequence, so that the waste gas can bidirectionally circulate in the box body to carry out RCO treatment, the volume of the RCO waste gas treatment device can be reduced when the waste gas with the same flow is treated, and the occupied area and the equipment cost are reduced.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of the structure of the air inlet, exhaust and purge lines according to an embodiment of the present application;
the names of the components marked in the figures are as follows:
Detailed Description
The following description of the present application will be made more fully hereinafter with reference to the accompanying drawings, in which it is shown, however, some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The RCO waste gas treatment device aims at solving the technical problems that the RCO waste gas treatment device in the prior art is huge in volume, so that the occupied area is huge, and the equipment cost of enterprises is increased in an intangible way.
The embodiment discloses an RCO waste gas treatment device, referring to figures 1-2, comprising a box body 1, wherein a heat accumulation area, a catalytic area and a heating area 4 are sequentially arranged in the box body 1 from bottom to top; the inside of the box body 1 is provided with a partition piece 101, the partition piece 101 divides the heat storage area and the catalytic area into a first heat storage area 2, a second heat storage area 6, a first catalytic area 3 and a second catalytic area 5 which are symmetrical left and right, and the first heat storage area 2, the first catalytic area 3, the heating area 4, the second catalytic area 5 and the second heat storage area 6 are communicated in sequence; the bottom of the first heat accumulation area 2 is provided with a first communication part, and the bottom of the second heat accumulation area 6 is provided with a second communication part. The first communication part comprises a first air inlet hole and a first air outlet hole, and the second communication part comprises a second air inlet hole and a second air outlet hole.
The partition 101 is arranged in the box body 1 according to the embodiment, so that the heat accumulating area and the catalytic area are respectively divided into a first heat accumulating area 2, a second heat accumulating area 6, a first catalytic area 3 and a second catalytic area 5 which are bilaterally symmetrical, and the RCO treatment direction of two waste gases is formed, wherein the RCO treatment direction comprises the first heat accumulating area 2, the first catalytic area 3, the heating area 4, the second catalytic area 5 and the second heat accumulating area 6; the second part sequentially passes through the second heat accumulation area 6, the second catalytic area 5, the heating area 4, the first catalytic area 3 and the first heat accumulation area 2, so that the waste gas can bidirectionally circulate in the box body 1 to be subjected to RCO treatment, the volume of the RCO waste gas treatment device can be reduced when the waste gas with the same flow is treated, and the occupied area and the equipment cost are reduced.
As a preferable scheme of the above embodiment, the RCO exhaust gas treatment device of the present embodiment further includes an intake pipe and an exhaust pipe disposed at the bottom of the tank 1;
the air inlet pipeline comprises a main air inlet pipe 7, a first air inlet pipe 8 and a second air inlet pipe 9, and an air supply device 13 is arranged on the main air inlet pipe 7; the output end of the main air inlet pipe 7 is communicated with the input ends of the first air inlet pipe 8 and the second air inlet pipe 9, the output end of the first air inlet pipe 8 is communicated with the first air inlet hole, and the output end of the second air inlet pipe 9 is communicated with the second air inlet hole; the first air inlet pipe 8 is provided with a first air inlet valve 801, and the second air inlet pipe 9 is provided with a second air inlet valve 901;
the exhaust pipeline comprises a main exhaust pipe 10, a first exhaust pipe 11 and a second exhaust pipe 12, wherein the input end of the main exhaust pipe 10 is communicated with the output ends of the first exhaust pipe 11 and the second exhaust pipe 12, the input end of the first exhaust pipe 11 is communicated with a first exhaust hole, and the input end of the second exhaust pipe 12 is communicated with a second exhaust hole; the main exhaust pipe 10 is provided with a main exhaust valve 1001, the first exhaust pipe 11 is provided with a first exhaust valve 1101, and the second exhaust pipe 12 is provided with a second exhaust valve 1201.
So set up, through the bottom of first intake pipe 8 and first blast pipe 11 intercommunication first heat accumulation area, the bottom of second intake pipe 9 and second blast pipe 12 intercommunication second heat accumulation area to the collocation can independently control the various valves of switch, through flexible pipeline overall arrangement realization waste gas can two-way circulation box 1 inside with carrying out RCO processing, simple structure practicality is strong, need not to dispose excessive pipeline in addition, is favorable to reducing the enterprise burden.
Specifically, (1) when the first intake valve 801 and the second exhaust valve 1201 are opened and the second intake valve 901 and the first exhaust valve 1101 are closed, the exhaust gas flows through the first intake pipe 8, the first heat accumulation zone 2, the first catalytic zone 3, the heating zone 4, the second catalytic zone 5, the second heat accumulation zone 6, and the second exhaust pipe 12 in this order; (2) when the second intake valve 901 and the first exhaust valve 1101 are opened and the first intake valve 801 and the second exhaust valve 1201 are closed, the exhaust gas flows through the second intake pipe 9, the second heat accumulation zone 6, the second catalytic zone 5, the heating zone 4, the first catalytic zone 3, the first heat accumulation zone 2, and the first exhaust pipe 11 in this order.
Preferably, the first intake valve 801, the second intake valve 901, the main exhaust valve 1001, the first exhaust valve 1101, and the second exhaust valve 1201 are all disposed outside the bottom side of the casing 11. So set up, all set up in the outside of this device with the required valve of switching waste gas flow direction, need not to reserve the space that is used for valve control in the bottom of this device in addition to reduce the whole height of this device, also can conveniently overhaul, maintain.
As a preferable scheme of the above embodiment, the RCO exhaust gas treatment device of this embodiment further includes a purge pipe 14, and one end of the purge pipe 14 is connected to the air inlet end of the air supply device 13; the other end of the purge pipeline 14 is connected to the connection part of the main exhaust pipe 10, the first exhaust pipe 11 and the second exhaust pipe 12; a purge valve 1401 is provided in the purge line 14. So set up, utilize the high temperature waste gas after the processing to sweep the VOCs who remains in the heat accumulator in the last stage, can accomplish under the prerequisite of not losing heat, improve VOCs and get rid of efficiency. And meanwhile, no extra special purge air flow is needed to be introduced, so that the cost burden of enterprises can be reduced.
As a preferable scheme of the above embodiment, the top of the partition 101 is provided with an air deflector 102, and the air deflector 102 is used for prolonging the moving path of the exhaust gas in the heating zone 4. So arranged, it is considered that in order to allow the exhaust gas to have a sufficient heating reaction time with the catalyst to secure the decomposition effect, it is necessary to lengthen the residence time of the exhaust gas in the heating zone 4. Based on the above consideration, the application has simple structure and strong practicability by arranging the air deflector 102 on the top of the partition 101 and prolonging the stay time of the exhaust gas in the heating zone 4 by prolonging the moving path of the exhaust gas in the heating zone 4.
Specifically, the cross section of the air deflector 102 is designed as an obtuse isosceles triangle, and the obtuse end of the air deflector 102 is fixedly connected with the partition 101. So arranged, the obtuse angle end of the air deflector 102 is fixedly connected with the partition 101,
as a preferable scheme of the above embodiment, heat storage bodies (not shown in the drawing) are disposed in the first heat storage region and the second heat storage region, and the heat storage bodies are used for storing heat released when the exhaust gas is decomposed, and specifically, the heat storage bodies are ceramic heat storage bodies. So set up, waste gas can contain higher heat after RCO handles, stores its heat through the heat accumulator, when next RCO handles the stage and goes on, can utilize its heat of storing in the heat accumulator to preheat the waste gas of new round, is favorable to the environmental protection to improve energy utilization.
Based on the RCO exhaust gas treatment device in the above embodiment, this embodiment also discloses a RCO exhaust gas treatment method, including the RCO exhaust gas treatment device in the above embodiment, and further including a first RCO treatment stage, a second RCO treatment stage, a third RCO treatment stage, and a fourth RCO treatment stage;
wherein,,
the first RCO treatment stage comprises passing the exhaust gas through a first heat accumulation zone 2, a first catalytic zone 3, a heating zone 4, a second catalytic zone 5, and a second heat accumulation zone 6 in that order;
the second RCO treatment stage comprises circulating the exhaust gas through the first heat accumulation zone 2, the first catalytic zone 3, the heating zone 4, the second catalytic zone 5, the second heat accumulation zone 6 and the first heat accumulation zone 2, and after a first preset time, sequentially passing through the second heat accumulation zone 6, the second catalytic zone 5, the heating zone 4, the first catalytic zone 3 and the first heat accumulation zone 2;
the third RCO treatment stage comprises circulating the exhaust gas through the second heat accumulation zone 6, the second catalytic zone 5, the heating zone 4, the first catalytic zone 3, the first heat accumulation zone 2 and the second heat accumulation zone 6, and after a second preset time, sequentially passing through the first heat accumulation zone 2, the first catalytic zone 3, the heating zone 4, the second catalytic zone 5 and the second heat accumulation zone 6;
the fourth RCO treatment stage includes cyclically repeating the second RCO treatment stage and the third RCO treatment stage until the exhaust treatment is completed.
Through the treatment method, the two-way circulation of the waste gas in the box 11 is realized to carry out RCO treatment, meanwhile, the purging pipeline 14 is utilized to purge the VOCs remained in the heat accumulator in the previous stage by utilizing the treated high-temperature waste gas before the second RCO treatment stage and the third RCO treatment stage are started, and the VOCs removal efficiency can be improved on the premise of not losing heat.
Specifically, the first RCO processing stage includes the following steps:
step a: closing the first air inlet valve 801, the second air inlet valve 901, the main exhaust valve 1001, the first exhaust valve 1101, the second exhaust valve 1201 and the purge valve 1401, and starting the first heat accumulation area 2, the second heat accumulation area 6 and the heating area 4 for preheating;
step b: opening a first air inlet valve 801, a second air outlet valve 1201 and a main air outlet valve 1001, under the driving action of an air supply device 13, enabling the exhaust gas containing VOCs to enter an RCO exhaust gas treatment device through a first air inlet pipe 8, then sequentially passing through a first heat accumulation area 2, a first catalytic area 3, a heating area 4, a second catalytic area 5 and a second heat accumulation area 6, and finally discharging from a second exhaust pipe 12; wherein, the waste gas is preheated and heated in the first heat accumulating area 2 and the heating area 4 respectively in sequence, and then RCO treatment is carried out under the catalysis of the catalyst in the second catalytic area 5; the heat of the treated exhaust gas is stored in the heat accumulator of the second heat accumulation zone 6;
specifically, the second RCO treatment stage includes the following steps:
step c: closing the main exhaust valve 1001, opening the purge valve 1401, and under the driving action of the air supply device 13, circulating the exhaust gas discharged in the previous stage through the purge pipeline 14, the main air inlet pipe 7, the first air inlet pipe 8, the first heat accumulation area 2, the first catalytic area 3, the heating area 4, the second catalytic area 5, the second heat accumulation area 6, the second air outlet pipe 12 and the purge pipeline 14; wherein, the exhaust gas is utilized to purge the VOCs remained in the first heat accumulation area 2 in the previous stage;
step d: after a first preset time, specifically, the first preset time may be set to be 20 seconds, the purge valve 1401, the first air inlet valve 801 and the second air outlet valve 1201 are closed, the main air outlet valve 1001, the second air inlet valve 901 and the first air outlet valve 1101 are opened, under the driving action of the air supply device 13, the waste gas enters the RCO waste gas treatment device through the second air inlet pipe 9, then sequentially passes through the second heat storage area 6, the second catalytic area 5, the heating area 4, the first catalytic area 3 and the first heat storage area 2, and finally is discharged from the first air outlet pipe 11; wherein, the waste gas is preheated and heated in the second heat accumulating area 6 and the heating area 4 respectively in sequence, and then RCO treatment is carried out under the catalysis of the catalyst in the first catalytic area 3; the heat of the treated waste gas is stored in a heat accumulator of the first heat accumulation area 2;
specifically, the third RCO treatment stage includes the following steps:
step e: closing the main exhaust valve 1001, opening the purge valve 1401, and under the driving action of the air supply device 13, circulating the exhaust gas discharged in the previous stage through the purge pipeline 14, the main air inlet pipe 7, the second air inlet pipe 9, the second heat accumulation area 6, the second catalytic area 5, the heating area 4, the first catalytic area 3, the first heat accumulation area 2, the first exhaust pipe 11 and the purge pipeline 14; wherein, the exhaust gas is utilized to purge the VOCs remained in the second heat accumulation area 6 in the previous stage;
step f: after a second preset time, specifically, the second preset time may be set to be 20 seconds, the purge valve 1401, the second air inlet valve 901 and the first air outlet valve 1101 are closed, the main air outlet valve 1001, the first air inlet valve 801 and the second air outlet valve 1201 are opened, under the driving action of the air supply device 13, the waste gas enters the RCO waste gas treatment device through the first air inlet pipe 8, then sequentially passes through the first heat storage area 2, the first catalytic area 3, the heating area 4, the second catalytic area 5 and the second heat storage area 6, and finally is discharged from the second air outlet pipe 12; wherein, the waste gas is preheated and heated in the first heat accumulating area 2 and the heating area 4 respectively in sequence, and then RCO treatment is carried out under the catalysis of the catalyst in the second catalytic area 5; the heat of the treated exhaust gas is stored in the heat storage body of the second heat storage area 6.
It should be noted that other contents of the RCO exhaust gas treatment device and the RCO exhaust gas treatment method disclosed in the present application are related art, and are not described herein.
In addition, it should be noted that, if there is a directional indication (such as up, down, left, right, front, and rear … …) in the embodiment of the present application, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.
Furthermore, it should be noted that the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The foregoing is merely an alternative embodiment of the present application, and is not intended to limit the scope of the present application, and all applications of the present application directly/indirectly in other related technical fields are included in the scope of the present application.
Claims (6)
1. An RCO exhaust treatment device, characterized in that: the device comprises a box body, wherein a heat accumulating area, a catalytic area and a heating area are sequentially arranged in the box body from bottom to top; the inside of the box body is provided with a partition piece, the partition piece divides the heat accumulation area and the catalytic area into a first heat accumulation area, a second heat accumulation area, a first catalytic area and a second catalytic area which are bilaterally symmetrical, and the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area are sequentially communicated; an air deflector is arranged at the top of the partition piece and used for prolonging the moving path of the waste gas in the heating area; specifically, the section of the air deflector is designed as an obtuse isosceles triangle, and the obtuse angle end of the air deflector is fixedly connected with the partition piece;
the bottom of the first heat accumulation area is provided with a first communication part, and the bottom of the second heat accumulation area is provided with a second communication part; the first communication part comprises a first air inlet hole and a first air outlet hole, and the second communication part comprises a second air inlet hole and a second air outlet hole;
the device also comprises an air inlet pipeline and an exhaust pipeline which are arranged at the bottom of the box body;
the air inlet pipeline comprises a main air inlet pipe, a first air inlet pipe and a second air inlet pipe, and an air supply device is arranged on the main air inlet pipe; the output end of the main air inlet pipe is communicated with the input ends of the first air inlet pipe and the second air inlet pipe, the output end of the first air inlet pipe is communicated with the first air inlet hole, and the output end of the second air inlet pipe is communicated with the second air inlet hole; the first air inlet pipe is provided with a first air inlet valve, and the second air inlet pipe is provided with a second air inlet valve;
the exhaust pipeline comprises a main exhaust pipe, a first exhaust pipe and a second exhaust pipe, wherein the input end of the main exhaust pipe is communicated with the output ends of the first exhaust pipe and the second exhaust pipe, the input end of the first exhaust pipe is communicated with the first exhaust hole, and the input end of the second exhaust pipe is communicated with the second exhaust hole; the main exhaust pipe is provided with a main exhaust valve, the first exhaust pipe is provided with a first exhaust valve, and the second exhaust pipe is provided with a second exhaust valve.
2. The RCO exhaust treatment device of claim 1, wherein: the first air inlet valve, the second air inlet valve, the main exhaust valve, the first exhaust valve and the second exhaust valve are all arranged outside the bottom side of the box body.
3. The RCO exhaust treatment device of claim 1, wherein: the air supply device further comprises a purging pipeline, wherein one end of the purging pipeline is connected with the air inlet end of the air supply device; the other end of the purging pipeline is connected to the connection part of the main exhaust pipe, the first exhaust pipe and the second exhaust pipe; and a purging valve is arranged on the purging pipeline.
4. The RCO exhaust treatment device of claim 1, wherein: and heat accumulators are arranged in the first heat accumulation area and the second heat accumulation area and are used for storing heat released by the decomposition of the waste gas.
5. An RCO exhaust gas treatment method, which is characterized in that:
comprising the RCO exhaust gas treatment device according to any one of claims 1 to 4,
the device also comprises a first RCO processing stage, a second RCO processing stage, a third RCO processing stage and a fourth RCO processing stage;
wherein,,
the first RCO treatment stage includes passing exhaust gas through the first heat accumulation zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat accumulation zone in that order;
the second RCO treatment stage includes circulating the exhaust gas through the first heat accumulation zone, the first catalytic zone, the heating zone, the second catalytic zone, the second heat accumulation zone, and the first heat accumulation zone, and after a first preset time, sequentially passing through the second heat accumulation zone, the second catalytic zone, the heating zone, the first catalytic zone, and the first heat accumulation zone;
the third RCO treatment stage includes circulating the exhaust gas through the second heat accumulation zone, the second catalytic zone, the heating zone, the first catalytic zone, the first heat accumulation zone, and the second heat accumulation zone, and after a second preset time, sequentially passing through the first heat accumulation zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat accumulation zone;
the fourth RCO treatment stage includes cyclically repeating the second RCO treatment stage and the third RCO treatment stage until exhaust gas treatment is completed.
6. The RCO exhaust gas treatment method according to claim 5, wherein:
the first RCO processing stage comprises the following steps:
closing the first air inlet valve, the second air inlet valve, the main exhaust valve, the first exhaust valve, the second exhaust valve and the purge valve, and starting the first heat accumulation area, the second heat accumulation area and the heating area for preheating;
opening the first air inlet valve, the second air outlet valve and the main air outlet valve, and under the driving action of an air supply device, enabling the waste gas containing VOCs to enter the RCO waste gas treatment device through the first air inlet pipe, then sequentially passing through the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area, and finally discharging from the second exhaust pipe; the waste gas is preheated and heated in the first heat accumulation area and the heating area respectively, and RCO treatment is carried out under the catalysis of the catalyst in the second catalytic area; the heat of the treated waste gas is stored in a heat accumulator of the second heat accumulation area;
the second RCO processing stage comprises the following steps:
closing the main exhaust valve, opening the purge valve, and under the driving action of the air supply device, the exhaust gas discharged in the previous stage circulates through a purge pipeline, the main air inlet pipe, the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area, the second heat accumulation area, the second exhaust pipe and the purge pipeline; the exhaust gas is utilized to purge VOCs remained in the first heat accumulation area in the previous stage;
after the first preset time, closing the purge valve, the first air inlet valve and the second air outlet valve, opening the main air outlet valve, the second air inlet valve and the first air outlet valve, enabling the waste gas to enter the RCO waste gas treatment device through a second air inlet pipe under the driving action of the air supply device, then sequentially passing through the second heat accumulation area, the second catalytic area, the heating area, the first catalytic area and the first heat accumulation area, and finally discharging from a first exhaust pipe; the waste gas is preheated and heated in the second heat accumulation area and the heating area respectively, and RCO treatment is carried out under the catalysis of the catalyst of the first catalytic area; the heat of the treated waste gas is stored in a heat accumulator of the first heat accumulation area;
the third RCO processing stage comprises the following steps:
closing the main exhaust valve, opening the purge valve, and under the driving action of the air supply device, the exhaust gas discharged in the previous stage circulates through the purge pipeline, the main air inlet pipe, the second heat accumulation area, the second catalytic area, the heating area, the first catalytic area, the first heat accumulation area, the first exhaust pipe and the purge pipeline; the exhaust gas is utilized to purge VOCs remained in the second heat accumulation area in the previous stage;
after the second preset time, closing the purge valve, the second air inlet valve and the first air outlet valve, opening the main air outlet valve, the first air inlet valve and the second air outlet valve, enabling the waste gas to enter the RCO waste gas treatment device through a first air inlet pipe under the driving action of the air supply device, then sequentially passing through the first heat accumulation area, the first catalytic area, the heating area, the second catalytic area and the second heat accumulation area, and finally discharging from a second air outlet pipe; the waste gas is preheated and heated in the first heat accumulation area and the heating area respectively, and RCO treatment is carried out under the catalysis of the catalyst in the second catalytic area; the heat of the treated exhaust gas is stored in the heat accumulator of the second heat accumulation area.
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