CN113932236A - 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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- CN113932236A CN113932236A CN202111069998.7A CN202111069998A CN113932236A CN 113932236 A CN113932236 A CN 113932236A CN 202111069998 A CN202111069998 A CN 202111069998A CN 113932236 A CN113932236 A CN 113932236A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005338 heat storage Methods 0.000 claims abstract description 164
- 230000003197 catalytic effect Effects 0.000 claims abstract description 120
- 238000010438 heat treatment Methods 0.000 claims abstract description 75
- 238000005192 partition Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 63
- 238000010926 purge Methods 0.000 claims description 55
- 239000012855 volatile organic compound Substances 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 11
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000006555 catalytic reaction Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 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
- 238000007664 blowing Methods 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
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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)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention 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 storage area, a catalytic area and a heating area are sequentially arranged in the box body from bottom to top; a partition is arranged in the box body, the partition divides the heat storage area and the catalytic area into a first heat storage area, a second heat storage area, a first catalytic area and a second catalytic area which are bilaterally symmetrical, and the first heat storage area, the first catalytic area, the heating area, the second catalytic area and the second heat storage area are communicated in sequence; the bottom of the first heat storage area is provided with a first communicating part, and the bottom of the second heat storage area is provided with a second communicating part. The invention reduces the volume of the RCO waste gas treatment device and reduces the occupied area and the equipment cost.
Description
Technical Field
The invention 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 called regeneration Catalytic oxidation, also called thermal storage Catalytic oxidation process, is a commonly used waste gas treatment device for waste gas containing VOCs (volatile organic compounds). A conventional RCO exhaust gas treatment device comprises a heat storage region through which exhaust gas is preheated to about 300 ℃, a catalytic region, and a heating region in which the exhaust gas is subsequently combusted under the catalytic action of a catalyst in the catalytic region to undergo catalytic combustion to decompose CO2 and H2O. The existing RCO waste gas treatment device has huge volume, thereby causing huge occupied area and invisibly increasing the equipment cost of enterprises.
Disclosure of Invention
The invention aims to design an RCO waste gas treatment device and a treatment method thereof, so that the size of the RCO waste gas treatment device is reduced, and the occupied area and the equipment cost are reduced.
In order to achieve the aim, the invention provides an RCO waste gas treatment device which comprises a box body, wherein a heat storage area, a catalytic area and a heating area are sequentially arranged in the box body from bottom to top; a partition is arranged in the box body, the partition divides the heat storage area and the catalytic area into a first heat storage area, a second heat storage area, a first catalytic area and a second catalytic area which are bilaterally symmetrical, and the first heat storage area, the first catalytic area, the heating area, the second catalytic area and the second heat storage area are communicated in sequence; the bottom of the first heat storage area is provided with a first communicating part, and the bottom of the second heat storage area is provided with a second communicating part.
Further, first intercommunication portion includes first inlet port and first exhaust hole, second intercommunication portion includes second inlet port and second exhaust hole.
Further, the air inlet pipeline and the exhaust pipeline 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; a first air inlet valve is arranged on the first air inlet pipe, and a second air inlet valve is arranged on the second air inlet pipe;
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 exhaust system is characterized in that a main exhaust valve is arranged on the main exhaust pipe, a first exhaust valve is arranged on the first exhaust pipe, and a second exhaust valve is arranged on the second exhaust pipe.
Further, the first intake valve, the second intake valve, the main exhaust valve, the first exhaust valve, and the second exhaust valve are all disposed outside the bottom side of the tank.
The air supply device further comprises a purging pipeline, wherein one end of the purging pipeline is connected with an air inlet end of the air supply device; the other end of the purging pipeline is connected to the connecting part of the main exhaust pipe, the first exhaust pipe and the second exhaust pipe; and the purging pipeline is provided with a purging valve.
Furthermore, the top of the separator is provided with an air deflector, and the air deflector is used for prolonging the moving path of the waste gas in the heating area.
Furthermore, the cross section of the air deflector is designed into an obtuse isosceles triangle, and the obtuse end of the air deflector is fixedly connected with the separator.
Further, a heat storage body is arranged in the first heat storage chamber and the second heat storage chamber, and the heat storage body is used for storing heat released when the waste gas is decomposed. Specifically, the heat accumulator is a ceramic heat accumulator.
In order to achieve the above object, the present invention further provides an RCO exhaust gas treatment method, including the RCO exhaust gas treatment device, 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 the first heat storage zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat storage zone in that order;
the second RCO treatment stage comprises circulating the exhaust gas through the first heat storage zone, the first catalytic zone, the heating zone, the second catalytic zone, the second heat storage zone, and the first heat storage zone, and after a first predetermined time, sequentially passing through the second heat storage zone, the second catalytic zone, the heating zone, the first catalytic zone, and the first heat storage zone;
the third RCO treatment stage comprises circulating the exhaust gas through the second heat storage zone, the second catalytic zone, the heating zone, the first catalytic zone, the first heat storage zone, and the second heat storage zone, and after a second predetermined time, sequentially passing through the first heat storage zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat storage zone;
the fourth RCO treatment stage comprises cyclically repeating the second RCO treatment stage and the third RCO treatment stage until exhaust treatment is complete.
Specifically, the first RCO processing stage includes the following steps:
closing the first intake valve, the second intake valve, the primary exhaust valve, the first exhaust valve, the second exhaust valve, and the purge valve, and activating the first heat storage zone, the second heat storage zone, and the heating zone for preheating;
opening the first air inlet valve, the second exhaust valve and the main exhaust valve, and under the driving action of an air supply device, allowing the waste gas containing VOCs to enter the RCO waste gas treatment device through the first air inlet pipe, then sequentially pass through the first heat storage region, the first catalytic region, the heating region, the second catalytic region and the second heat storage region, and finally be discharged from the second exhaust pipe; preheating and heating the waste gas in the first heat storage area and the heating area in sequence, and performing RCO treatment under the catalytic action of a catalyst in the second catalytic area; storing the heat of the treated exhaust gas in a heat storage body of the second heat storage zone;
specifically, the second RCO treatment stage includes the following steps:
closing the main exhaust valve, opening the purge valve, and circulating the exhaust gas discharged at the previous stage through the purge line, the main intake pipe, the first heat storage region, the first catalytic region, the heating region, the second catalytic region, the second heat storage region, the second exhaust pipe, and the purge line under the driving action of the blower; wherein the waste gas is used to purge VOCs remaining in the first heat storage zone in the previous stage;
after the first preset time, closing the purge valve, the first air inlet valve and the second exhaust valve, opening the main exhaust valve, the second air inlet valve and the first exhaust valve, and under the driving action of the air supply device, allowing the exhaust gas to enter the RCO exhaust gas treatment device through a second air inlet pipe, sequentially pass through the second heat storage region, the second catalytic region, the heating region, the first catalytic region and the first heat storage region, and finally be discharged from a first exhaust pipe; preheating and heating the waste gas in the second heat storage area and the heating area in sequence, and performing RCO treatment under the catalytic action of the catalyst in the first catalytic area; storing heat of the treated exhaust gas into a heat storage body of the first heat storage zone;
specifically, the third RCO processing stage includes the following steps:
closing the main exhaust valve, opening the purge valve, and circulating the exhaust gas discharged at the previous stage through the purge line, the main intake pipe, the second heat storage region, the second catalytic region, the heating region, the first catalytic region, the first heat storage region, the first exhaust pipe, and the purge line under the driving action of the blower; wherein the waste gas is used for purging VOCs remained in the second heat storage area in the previous stage;
after the second preset time, closing the purge valve, the second air inlet valve and the first exhaust valve, opening the main exhaust valve, the first air inlet valve and the second exhaust valve, and under the driving action of the air supply device, allowing the exhaust gas to enter the RCO exhaust gas treatment device through a first air inlet pipe, then sequentially pass through the first heat storage region, the first catalytic region, the heating region, the second catalytic region and the second heat storage region, and finally be discharged from a second exhaust pipe; preheating and heating the waste gas in the first heat storage area and the heating area in sequence, and performing RCO treatment under the catalytic action of a catalyst in the second catalytic area; the heat of the treated exhaust gas is stored in the heat storage body of the second heat storage region.
Compared with the prior art, the invention has the beneficial effects that:
the heat storage area and the catalysis area are respectively divided into a first heat storage area, a second heat storage area, a first catalysis area and a second catalysis area which are bilaterally symmetrical by arranging a partition inside the box body, so that two RCO treatment directions are formed, wherein the RCO treatment directions comprise that one RCO treatment direction sequentially passes through the first heat storage area, the first catalysis area, the heating area, the second catalysis area and the second heat storage area; its two pass through second heat accumulation district, second catalysis district, the zone of heating, first catalysis district and first heat accumulation district in proper order, realize that waste gas can handle in the inside two-way circulation of box in order to carry out RCO, realize can reducing RCO exhaust treatment device volume when handling the waste gas of the same flow, reduce area and equipment cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an intake pipeline, an exhaust pipeline and a purge pipeline according to an embodiment of the present invention;
the names of the components identified in the figures are as follows:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
101 | |
| 102 | |
2 | First |
| 3 | First |
4 | |
| 5 | Second |
6 | Second |
| 7 | Main air inlet pipe | 8 | First |
| 801 | First air inlet valve | 9 | Second |
| 901 | Second |
10 | |
| 1001 | |
11 | |
| 1101 | |
12 | |
| 1201 | |
13 | |
| 14 | |
1401 | Purging valve |
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the description is only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The device aims at the technical problems that the RCO waste gas treatment device in the prior art is huge in size, so that the occupied area is huge, and the equipment cost of an enterprise is increased invisibly.
The embodiment discloses an RCO waste gas treatment device, which is shown in the attached figures 1-2 and comprises a box body 1, wherein a heat storage area, a catalytic area and a heating area 4 are sequentially arranged in the box body 1 from bottom to top; a partition 101 is arranged in the box body 1, the partition 101 divides the heat storage region and the catalytic region into a first heat storage region 2 and a second heat storage region 6 which are bilaterally symmetrical, and a first catalytic region 3 and a second catalytic region 5, and the first heat storage region 2, the first catalytic region 3, the heating region 4, the second catalytic region 5 and the second heat storage region 6 are communicated in sequence; the bottom of the first heat storage area 2 is provided with a first communicating part, and the bottom of the second heat storage area 6 is provided with a second communicating part. Wherein, first intercommunication portion includes first inlet port and first exhaust hole, and the second intercommunication portion includes second inlet port and second exhaust hole.
According to the embodiment, the partition part 101 is arranged in the box body 1 to divide the heat storage region and the catalytic region into the first heat storage region 2 and the second heat storage region 6 which are bilaterally symmetrical, and the first catalytic region 3 and the second catalytic region 5, so that two RCO treatment directions of waste gas are formed, wherein the waste gas sequentially passes through the first heat storage region 2, the first catalytic region 3, the heating region 4, the second catalytic region 5 and the second heat storage region 6; its two pass through second heat accumulation district 6, second catalytic zone 5, the zone of heating 4, first catalytic zone 3 and first heat accumulation district 2 in proper order, realize that waste gas can handle in the inside two-way circulation of box 1 in order to carry out RCO, realize can reducing RCO exhaust-gas treatment device volume when handling the waste gas of the same flow, reduce area and equipment cost.
As a preferable scheme of the above embodiment, the RCO exhaust gas treatment device of the present embodiment further includes an intake line and an exhaust line 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 a first air inlet pipe 8 and a second air inlet pipe 9, the output end of the first air inlet pipe 8 is communicated with a first air inlet hole, and the output end of the second air inlet pipe 9 is communicated with a second air inlet hole; a first air inlet valve 801 is arranged on the first air inlet pipe 8, and a second air inlet valve 901 is arranged on the second air inlet pipe 9;
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; a main exhaust valve 1001 is arranged on the main exhaust pipe 10, a first exhaust valve 1101 is arranged on the first exhaust pipe 11, and a second exhaust valve 1201 is arranged on the second exhaust pipe 12.
So set up, through the bottom of first intake pipe 8 and the first regenerator of 11 intercommunications of first blast pipes, second intake pipe 9 and the bottom of second blast pipe 12 intercommunication second regenerator to the collocation can be from various valves of master control switch, realize through nimble pipeline overall arrangement that waste gas can two-way circulation box 1 inside in order to carry out RCO and handle, simple structure practicality is strong, need not additionally to dispose too much pipeline, is favorable to reducing the enterprise burden.
Specifically, when a first intake valve 801 and a second exhaust valve 1201 are opened and a second intake valve 901 and a first exhaust valve 1101 are closed, the exhaust gas flows through a first intake pipe 8, a first heat storage region 2, a first catalytic region 3, a heating region 4, a second catalytic region 5, a second heat storage region 6 and a second exhaust pipe 12 in sequence; 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 storage region 6, the second catalytic region 5, the heating region 4, the first catalytic region 3, the first heat storage region 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 tank 11. So set up, all set up in the outside of this device with the required valve that switches the waste gas flow direction of flowing through, need not in addition to reserve the space that is used for valve control in the bottom of this device 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 purging pipeline 14, wherein one end of the purging pipeline 14 is connected to an air inlet end of the air supply device 13; the other end of the purge line 14 is connected to the connection between the main exhaust pipe 10 and the first and second exhaust pipes 11 and 12; the purge line 14 is provided with a purge valve 1401. So set up, the high temperature waste gas after the utilization is handled sweeps the VOCs that last stage remained in the heat accumulator, can accomplish under the thermal prerequisite of not losing, improves VOCs and gets rid of efficiency. And meanwhile, extra special purging airflow is not required to be introduced, and the cost burden of an enterprise is reduced.
As a preferable solution of the above embodiment, the top of the partition 101 is provided with a wind deflector 102, and the wind deflector 102 is used for extending the moving path of the exhaust gas in the heating zone 4. With this arrangement, it is considered that the residence time of the exhaust gas in the heating zone 4 needs to be extended in order to allow the exhaust gas to have a sufficient heating reaction time with the catalyst to ensure the decomposition effect. Based on the above consideration, the present application has the advantages that the air deflector 102 is arranged on the top of the partition 101, the moving path of the exhaust gas in the heating area 4 is prolonged, so as to prolong the residence time of the exhaust gas in the heating area 4, the structure is simple, and the practicability is strong.
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 to the partition 101. So set up, with obtuse angle end and the separator 101 fixed connection of aviation baffle 102 to ensure that the longest limit of aviation baffle 102 aligns heating zone 4, make waste gas need pass through heating zone 4 along the longest limit of aviation baffle 102, thereby the length of physics extension heating zone 4, and then realize prolonging the dwell time of waste gas in heating zone 4.
As a preferable aspect of the above embodiment, a heat storage body (not shown in the drawings) is provided in the first heat storage chamber and the second heat storage chamber, and the heat storage body is used to store heat released when the exhaust gas is decomposed, and specifically, the heat storage body is a ceramic heat storage body. So set up, waste gas can contain higher heat after RCO handles, stores its heat through the heat accumulator, when next RCO treatment phase goes on, and usable its heat of storing in the heat accumulator preheats new round of waste gas, is favorable to the environmental protection to improve energy utilization.
Based on the RCO exhaust gas treatment device in the above embodiment, the present embodiment further discloses an RCO exhaust gas treatment method, including the RCO exhaust gas treatment device in the above embodiment, 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 the steps of enabling the waste gas to sequentially pass through a first heat storage area 2, a first catalytic area 3, a heating area 4, a second catalytic area 5 and a second heat storage area 6;
the second RCO treatment stage comprises the steps that the waste gas firstly circulates through the first heat storage area 2, the first catalytic area 3, the heating area 4, the second catalytic area 5, the second heat storage area 6 and the first heat storage area 2, and after the waste gas is subjected to the first preset time, the waste gas 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;
the third RCO treatment stage comprises the steps that the waste gas firstly circulates through a second heat storage area 6, a second catalytic area 5, a heating area 4, a first catalytic area 3, a first heat storage area 2 and a second heat storage area 6, and after a second preset time, the waste gas 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;
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 waste gas can flow in two directions in the box body 11 to be treated by RCO, meanwhile, the purging pipeline 14 is firstly used for purging before the start of the second RCO treatment stage and the third RCO treatment stage, the treated high-temperature waste gas is used for purging VOCs remained in the heat accumulator in the last stage, and the removal efficiency of the VOCs 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 storage zone 2, the second heat storage zone 6 and the heating zone 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, allowing the waste gas containing VOCs to enter an RCO waste gas treatment device through a first air inlet pipe 8, then sequentially passing through a first heat storage region 2, a first catalytic region 3, a heating region 4, a second catalytic region 5 and a second heat storage region 6, and finally being discharged from a second air outlet pipe 12; wherein, the waste gas is preheated and heated in the first heat storage zone 2 and the heating zone 4 in sequence respectively, and then is subjected to RCO treatment under the catalytic action of the catalyst in the second catalytic zone 5; the heat of the treated exhaust gas is stored in the heat storage body of the second heat storage region 6;
specifically, the second RCO treatment stage includes the steps of:
step c: closing a main exhaust valve 1001, opening a purging valve 1401, and circulating the exhaust gas discharged in the previous stage under the driving action of a blowing device 13 through a purging pipeline 14, a main air inlet pipe 7, a first air inlet pipe 8, a first heat storage area 2, a first catalytic area 3, a heating area 4, a second catalytic area 5, a second heat storage area 6, a second exhaust pipe 12 and a purging pipeline 14; wherein, the waste gas is used for purging the VOCs remained in the first heat storage area 2 in the previous stage;
step d: after the first preset time, specifically, the first preset time can be set to be 20 seconds, the purging valve 1401, the first air inlet valve 801 and the second exhaust valve 1201 are closed, the main exhaust valve 1001, the second air inlet valve 901 and the first exhaust valve 1101 are opened, under the driving action of the air supply device 13, the exhaust gas enters the RCO exhaust gas treatment device through the second air inlet pipe 9, then sequentially passes through the second heat storage region 6, the second catalytic region 5, the heating region 4, the first catalytic region 3 and the first heat storage region 2, and finally is discharged from the first exhaust pipe 11; wherein, the waste gas is preheated and heated in the second heat storage zone 6 and the heating zone 4 in sequence respectively, and then is subjected to RCO treatment under the catalytic action of the catalyst in the first catalytic zone 3; the heat of the treated exhaust gas is stored in the heat storage body of the first heat storage zone 2;
specifically, the third RCO treatment stage includes the following steps:
step e: closing the main exhaust valve 1001, opening the purging valve 1401, and circulating the exhaust gas discharged in the previous stage through the purging pipeline 14, the main air inlet pipe 7, the second air inlet pipe 9, the second heat storage area 6, the second catalytic area 5, the heating area 4, the first catalytic area 3, the first heat storage area 2, the first exhaust pipe 11 and the purging pipeline 14 under the driving action of the air supply device 13; wherein, the waste gas is used for purging the VOCs remained in the second heat storage area 6 in the previous stage;
step f: after a second preset time, specifically, the second preset time can be set to be 20 seconds, the purging valve 1401, the second air inlet valve 901 and the first exhaust valve 1101 are closed, the main exhaust valve 1001, the first air inlet valve 801 and the second exhaust valve 1201 are opened, under the driving action of the air supply device 13, the exhaust gas enters the RCO exhaust gas treatment device through the first air inlet pipe 8, then sequentially passes through the first heat storage region 2, the first catalytic region 3, the heating region 4, the second catalytic region 5 and the second heat storage region 6, and finally is discharged from the second exhaust pipe 12; wherein, the waste gas is preheated and heated in the first heat storage zone 2 and the heating zone 4 in sequence respectively, and then is subjected to RCO treatment under the catalytic action of the catalyst in the second catalytic zone 5; the heat of the treated exhaust gas is stored in the heat storage body of the second heat storage section 6.
It should be noted that other contents of the RCO exhaust gas treatment device and the treatment method thereof disclosed by the present invention are prior art and are not described herein again.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
Furthermore, it should be noted that the descriptions relating to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The above are only alternative embodiments of the present invention, and not intended to limit the scope of the present invention, and all the applications of the present invention in other related fields are included in the scope of the present invention.
Claims (10)
1. An RCO exhaust gas treatment device, characterized in that: the device comprises a box body, wherein a heat storage area, a catalytic area and a heating area are sequentially arranged in the box body from bottom to top; a partition is arranged in the box body, the partition divides the heat storage area and the catalytic area into a first heat storage area, a second heat storage area, a first catalytic area and a second catalytic area which are bilaterally symmetrical, and the first heat storage area, the first catalytic area, the heating area, the second catalytic area and the second heat storage area are communicated in sequence;
the bottom of the first heat storage area is provided with a first communicating part, and the bottom of the second heat storage area is provided with a second communicating part.
2. The RCO exhaust gas treatment device according to claim 1, wherein: the first communicating part comprises a first air inlet hole and a first exhaust hole, and the second communicating part comprises a second air inlet hole and a second exhaust hole.
3. The RCO exhaust gas treatment device according to claim 2, wherein:
the gas-liquid separator 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; a first air inlet valve is arranged on the first air inlet pipe, and a second air inlet valve is arranged on the second air inlet pipe;
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 exhaust system is characterized in that a main exhaust valve is arranged on the main exhaust pipe, a first exhaust valve is arranged on the first exhaust pipe, and a second exhaust valve is arranged on the second exhaust pipe.
4. The RCO exhaust gas treatment device according to claim 3, wherein: the first intake valve, the second intake valve, the main exhaust valve, the first exhaust valve, and the second exhaust valve are all disposed outside a bottom side of the tank body.
5. The RCO exhaust gas treatment device according to claim 3, wherein: 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 connecting part of the main exhaust pipe, the first exhaust pipe and the second exhaust pipe; and the purging pipeline is provided with a purging valve.
6. The RCO exhaust gas treatment device according to claim 1, wherein: and the top of the separator is provided with an air deflector which is used for prolonging the moving path of the waste gas in the heating area.
7. The RCO exhaust gas treatment device according to claim 6, wherein: the cross section of the air deflector is designed into an obtuse isosceles triangle, and the obtuse end of the air deflector is fixedly connected with the separator.
8. The RCO exhaust gas treatment device according to claim 1, wherein: and heat accumulators are arranged in the first heat accumulator and the second heat accumulator and used for storing heat released when the waste gas is decomposed.
9. An RCO waste gas treatment method is characterized in that:
comprising the RCO exhaust gas treatment device according to any one of claims 1 to 8,
the method also comprises 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 the first heat storage zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat storage zone in that order;
the second RCO treatment stage comprises circulating the exhaust gas through the first heat storage zone, the first catalytic zone, the heating zone, the second catalytic zone, the second heat storage zone, and the first heat storage zone, and after a first predetermined time, sequentially passing through the second heat storage zone, the second catalytic zone, the heating zone, the first catalytic zone, and the first heat storage zone;
the third RCO treatment stage comprises circulating the exhaust gas through the second heat storage zone, the second catalytic zone, the heating zone, the first catalytic zone, the first heat storage zone, and the second heat storage zone, and after a second predetermined time, sequentially passing through the first heat storage zone, the first catalytic zone, the heating zone, the second catalytic zone, and the second heat storage zone;
the fourth RCO treatment stage comprises cyclically repeating the second RCO treatment stage and the third RCO treatment stage until exhaust treatment is complete.
10. The RCO exhaust gas treatment method of claim 9, wherein:
the first RCO treatment stage comprises the following steps:
closing the first intake valve, the second intake valve, the primary exhaust valve, the first exhaust valve, the second exhaust valve, and the purge valve, and activating the first heat storage zone, the second heat storage zone, and the heating zone for preheating;
opening the first air inlet valve, the second exhaust valve and the main exhaust valve, and under the driving action of an air supply device, allowing the waste gas containing VOCs to enter the RCO waste gas treatment device through the first air inlet pipe, then sequentially pass through the first heat storage region, the first catalytic region, the heating region, the second catalytic region and the second heat storage region, and finally be discharged from the second exhaust pipe; preheating and heating the waste gas in the first heat storage area and the heating area in sequence, and performing RCO treatment under the catalytic action of a catalyst in the second catalytic area; storing the heat of the treated exhaust gas in a heat storage body of the second heat storage zone;
the second RCO treatment stage comprises the following steps:
closing the main exhaust valve, opening the purge valve, and circulating the exhaust gas discharged at the previous stage through the purge line, the main intake pipe, the first heat storage region, the first catalytic region, the heating region, the second catalytic region, the second heat storage region, the second exhaust pipe, and the purge line under the driving action of the blower; wherein the waste gas is used to purge VOCs remaining in the first heat storage zone in the previous stage;
after the first preset time, closing the purge valve, the first air inlet valve and the second exhaust valve, opening the main exhaust valve, the second air inlet valve and the first exhaust valve, and under the driving action of the air supply device, allowing the exhaust gas to enter the RCO exhaust gas treatment device through a second air inlet pipe, sequentially pass through the second heat storage region, the second catalytic region, the heating region, the first catalytic region and the first heat storage region, and finally be discharged from a first exhaust pipe; preheating and heating the waste gas in the second heat storage area and the heating area in sequence, and performing RCO treatment under the catalytic action of the catalyst in the first catalytic area; storing heat of the treated exhaust gas into a heat storage body of the first heat storage zone;
the third RCO treatment stage comprises the following steps:
closing the main exhaust valve, opening the purge valve, and circulating the exhaust gas discharged at the previous stage through the purge line, the main intake pipe, the second heat storage region, the second catalytic region, the heating region, the first catalytic region, the first heat storage region, the first exhaust pipe, and the purge line under the driving action of the blower; wherein the waste gas is used for purging VOCs remained in the second heat storage area in the previous stage;
after the second preset time, closing the purge valve, the second air inlet valve and the first exhaust valve, opening the main exhaust valve, the first air inlet valve and the second exhaust valve, and under the driving action of the air supply device, allowing the exhaust gas to enter the RCO exhaust gas treatment device through a first air inlet pipe, then sequentially pass through the first heat storage region, the first catalytic region, the heating region, the second catalytic region and the second heat storage region, and finally be discharged from a second exhaust pipe; preheating and heating the waste gas in the first heat storage area and the heating area in sequence, and performing RCO treatment under the catalytic action of a catalyst in the second catalytic area; the heat of the treated exhaust gas is stored in the heat storage body of the second heat storage region.
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| CN113932236B (en) | 2023-10-13 |
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