CN216384208U - RTO + SCR combined treatment process device - Google Patents
RTO + SCR combined treatment process device Download PDFInfo
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- CN216384208U CN216384208U CN202122720279.9U CN202122720279U CN216384208U CN 216384208 U CN216384208 U CN 216384208U CN 202122720279 U CN202122720279 U CN 202122720279U CN 216384208 U CN216384208 U CN 216384208U
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- rto
- brick
- heat storage
- scr
- treatment process
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 30
- 239000011449 brick Substances 0.000 claims abstract description 83
- 238000005338 heat storage Methods 0.000 claims abstract description 36
- 239000003054 catalyst Substances 0.000 claims abstract description 29
- 230000001172 regenerating effect Effects 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 18
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 11
- 239000002912 waste gas Substances 0.000 description 4
- 229910002089 NOx Inorganic materials 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- Chimneys And Flues (AREA)
Abstract
The utility model relates to the technical field of flue gas treatment equipment, and provides an RTO + SCR combined treatment process device, which comprises an RTO device body, wherein the RTO device body comprises: the heat storage chamber is internally provided with a plurality of heat storage bodies, each heat storage body comprises a plurality of layers of heat storage bricks, and at least one layer of SCR catalyst brick is arranged in each layer of heat storage bricks; the utility model combines the RTO process and the SCR process together, reduces the occupied area of equipment, reduces the operation cost, reduces control points and saves the cost.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment equipment, in particular to an RTO + SCR combined treatment process device.
Background
In the prior RTO technology, a catalyst is generally separately arranged outside a regenerative thermal oxidizer, and a reaction box is separately configured and a separate heat source is required to be provided; the common process is as follows: desulfurized flue gas → GGH heat exchanger → RTO regenerative combustion chamber → SCR → chimney; a plurality of heat sources are needed in the whole process, the occupied area is large, and great burden is caused to the operation cost; because need independent reaction box and independent heat supply heat source for the system is more complicated, and the control point increases, and the fault rate increases, and the cost increases a lot, and noble metal catalyst directly scrapps behind the overtemperature simultaneously, loses seriously.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an RTO + SCR combined treatment process device which is used for treating VOC gas in the CCL industry and can effectively reduce the emission of NOx in flue gas on the premise of standard emission of VOC; the VOC treatment efficiency reaches more than 99.5 percent, the emission value is controlled within 30mg/Nm3, the NOx removal efficiency reaches more than 90 percent, and the emission value is controlled within 100mg/Nm 3.
The embodiment of the utility model is realized by the following technical scheme: an RTO + SCR combined treatment process unit, includes the RTO device body, and the RTO device body includes:
a heat storage chamber is arranged in the heat storage chamber,
a plurality of heat accumulators are arranged in the heat accumulator chamber, each heat accumulator comprises a plurality of layers of heat accumulation bricks, and at least one layer of SCR catalyst brick is arranged in each layer of heat accumulation bricks.
Further, the SCR catalyst brick is arranged in a heat storage brick interlayer with the temperature range of 250-450 ℃.
Further, the RTO device body sequentially comprises a combustion chamber, a regenerative chamber and a gas distributor from top to bottom; the number of the regenerative chambers is at least 3, each regenerative chamber is connected with the combustion chamber, and the gas distributor is respectively connected with each regenerative chamber and controls the discharge and the discharge of gas in a circulating mode.
Further, the heat storage body includes:
the heat-storage brick is provided with a heat-storage brick,
an SCR (selective catalytic reduction) catalyst brick,
the bottom brick is provided with a plurality of first grooves with vertically arranged openings;
the support brick of the vertical setting of a plurality of, the one end of supporting the brick is inserted first recess setting, and is equipped with the second recess that a plurality of opening levels set up on the support brick, and the one end of heat accumulation brick is inserted in the second recess, and the one end of SCR catalyst brick is inserted in the second recess.
Furthermore, the second grooves are respectively formed in two sides of the supporting bricks, and the heat storage bricks and the SCR catalyst bricks are arranged in the second grooves in a staggered mode.
Furthermore, from top to bottom, be equipped with triangle steady block between adjacent heat accumulation brick or the SCR catalyst brick.
Furthermore, a plurality of third grooves are formed in the surfaces of the heat storage brick and the SCR catalyst brick.
Furthermore, a vertical upward bulge is arranged on the side wall of the second groove, and the volume of the bulge is smaller than that of the third groove.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
1: the RTO process and the SCR process are combined together, so that the occupied area of equipment is reduced, the operation cost is low, the control point is reduced, and the cost is saved.
2: after entering the heat accumulating type thermal oxidation device, nitrogen oxides in the exhaust gas can preferentially react with the SCR catalyst instead of firstly reacting with oxygen, so that the nitrogen oxides are directly reduced into nitrogen after reacting with the catalyst, and no nitrogen monoxide or nitrogen dioxide is generated; the process can effectively remove NOx and nitrogen oxides in the exhaust gas
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a first state of an RTO + SCR combined treatment process apparatus according to the present invention;
FIG. 2 is a schematic view of a second state of an RTO + SCR combined treatment process apparatus according to the present invention;
FIG. 3 is a schematic view of a third state of an RTO + SCR combined treatment process apparatus according to the present invention;
FIG. 4 is a schematic view of an installation structure of a heat accumulator in an RTO + SCR combined treatment process device provided by the utility model;
FIG. 5 is an enlarged schematic view of a heat storage brick in an RTO + SCR combined treatment process device provided by the utility model;
FIG. 6 is a schematic view of the installation and matching of a second groove in an RTO + SCR combined treatment process device provided by the utility model;
icon: 1-a first regenerator, 2-a second regenerator, 3-a third regenerator, 4-a combustion chamber, 5-a heat accumulator, 51-a bottom brick, 52-a support brick, 53-a heat accumulation brick, 54-an SCR catalyst brick, 531-a third groove and 521-a bulge.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element which is referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
An RTO + SCR combined treatment process device comprises an RTO device body, a combustion chamber 4, a regenerative chamber and a gas distributor, wherein the combustion chamber 4, the regenerative chamber and the gas distributor are sequentially arranged from top to bottom; the regenerative chambers are provided with 3 regenerative chambers, each regenerative chamber is connected with a combustion chamber 4, a gas distributor is respectively connected with each regenerative chamber and controls the discharge and the discharge of gas in a circulating mode, and the working principle is as shown in figures 1-3: the 3 regenerators are a first regenerator 1, a second regenerator 2 and a third regenerator 3 from left to right in sequence, wherein a regenerator 5 in the third regenerator 3 is heated in advance, then gas is input from the bottom of the third regenerator 3 from a gas distributor, passes through the third regenerator 3, is heated in advance, is combusted in a combustion chamber 4, the combusted gas is discharged from the second regenerator 2, and is heated in advance for the regenerator 5 in the second regenerator 2, and then the gas distributor discharges waste gas from the bottom of the second regenerator 2, the combustion chamber 4 is combusted, the regenerator 5 which simultaneously heats the inside of the first regenerator 1 is discharged from the bottom of the first regenerator 1, and then is input from the first regenerator 1, is combusted, is discharged from the third regenerator 3, and is circulated in sequence.
In this embodiment, a plurality of heat accumulators 5 are disposed in the heat accumulator, each heat accumulator 5 includes a plurality of layers of heat accumulation bricks 53, and at least one layer of SCR catalyst bricks 54 is disposed in each layer of heat accumulation bricks 53, and it should be noted that the operating temperature of the SCR catalyst bricks 54 is 250 to 450 degrees celsius, preferably 400 degrees celsius, so that the arrangement position thereof is inside the plurality of layers of heat accumulation bricks 53, and the arrangement position thereof is kept at a constant temperature as much as possible, thereby avoiding overheating near the combustion chamber 4 and overcooling near the air inlet.
Further, as shown in fig. 4, the heat storage body 5 includes: the heat storage brick comprises a plurality of heat storage bricks, a plurality of SCR catalyst bricks 54, a bottom brick 51 and a plurality of vertically arranged support bricks 52, wherein a plurality of first grooves with vertically arranged openings are formed in the bottom brick 51; one end of a supporting brick 52 is inserted into the first groove, a plurality of second grooves with horizontally arranged openings are arranged on the supporting brick 52, one end of a heat storage brick 53 is inserted into the second grooves, and one end of an SCR catalyst brick 54 is inserted into the second grooves; preferably, gaps are reserved between adjacent heat storage bricks 53 to ensure the gas to pass through, meanwhile, the passing efficiency is kept through the contact area of the gas with the structure which is too large, and the partial brick body replacement can be carried out for the failure of SCR catalysis caused by the change of temperature without the whole replacement, so that the maintenance cost is reduced.
Further, second grooves are respectively formed in both sides of the support bricks 52, and the heat storage bricks 53 and the SCR catalyst bricks 54 are alternately arranged in the second grooves to construct a folded channel, thereby improving gas passing efficiency and enlarging a contact area.
Furthermore, from top to bottom, a triangular stabilizing block is provided between the adjacent heat storage bricks 53 or SCR catalyst bricks 54, and the strength between the bricks distributed in a staggered manner is achieved by the triangular stabilizing block, and it should be noted here that the thickness of the bricks is not particularly required, and theoretically, the thinner the bricks are, the better the strength is, but the thinner the bricks are, the strength is not sufficient, so that a support needs to be provided separately.
Further, as shown in fig. 5, a plurality of third grooves 531 are formed on the surfaces of the heat storage bricks 53 and the SCR catalyst bricks 54; the purpose of the third groove 531 here is two points, first; the triangular stabilizing blocks are convenient to fix, and secondly, the surface contact area is enlarged.
Further, as shown in fig. 6, a vertical upward protrusion 521 is arranged on the side wall of the second groove, the volume of the protrusion 521 is smaller than that of the third groove 531, and the protrusion 521 is matched with the groove, so that the horizontal degree of freedom of the brick body is limited, and the sliding of the brick body is avoided, so that the whole brick body is damaged and fails.
It should be noted that, in this embodiment, a process method in which the RTO system is used in combination with the SCR system has a certain requirement on the content of particulate matters and dust in the exhaust gas. The RTO ceramic heat accumulator 5 is used for storing heat generated during combustion of the waste gas, and the heat energy stored by the heat storage ceramic is used for heating the waste gas to reach the temperature required by SCR catalytic reaction, and the use temperature of the SCR catalyst in the process is 250-450 ℃. And after the VOC waste gas reaches the ignition temperature, performing catalytic oxidation decomposition under the action of a catalyst, wherein the thermal oxidation reaction molecular formula of the DMF component is as follows:
finally, the material of the brick body is not displayed at all, and the brick body is generally made of industrial ceramics; in addition, for different types of RTO equipment, equipment such as a chimney or an ignition device, other pipelines, and the like can be arranged, and the existing equipment is adopted for the equipment.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An RTO + SCR combined treatment process unit, includes RTO device body, characterized in that, the RTO device body includes:
a heat storage chamber is arranged in the heat storage chamber,
the heat storage chamber is internally provided with a plurality of heat storage bodies (5), each heat storage body (5) comprises a plurality of layers of heat storage bricks (53), and at least one layer of SCR catalyst brick (54) is arranged in each layer of heat storage brick (53).
2. The RTO + SCR combined treatment process unit according to claim 1, wherein the SCR catalyst bricks (54) are arranged in an interlayer of heat storage bricks (53) having a temperature range of 250 to 450 ℃.
3. The RTO + SCR combined treatment process unit according to claim 2, wherein the RTO unit body comprises, in sequence from top to bottom, a combustion chamber (4), the regenerator and a gas distributor; the number of the regenerative chambers is at least 3, each regenerative chamber is connected with the combustion chamber (4), and the gas distributor is respectively connected with each regenerative chamber and controls the discharge and the discharge of gas in a circulating mode.
4. The RTO + SCR combined treatment process unit according to claim 2, wherein the heat accumulator (5) comprises:
the heat-storage brick is characterized in that the heat-storage brick,
the SCR catalyst brick (54),
the bottom brick (51) is provided with a plurality of first grooves with vertically arranged openings;
the support brick (52) of a plurality of vertical setting, the setting of first recess is inserted to the one end of support brick (52), just be equipped with the second recess that a plurality of openings level set up on support brick (52), the one end of heat accumulation brick (53) is inserted in the second recess, the one end of SCR catalyst brick (54) is inserted in the second recess.
5. The RTO + SCR combined treatment process device according to claim 4, wherein the second grooves are respectively provided at both sides of the support brick (52), and one end of the heat storage brick (53) and one end of the SCR catalyst brick (54) are alternately provided in the second grooves.
6. The RTO + SCR combined treatment process unit according to claim 5, wherein a triangular stabilizing block is arranged between the adjacent heat storage bricks (53) or SCR catalyst bricks (54) from top to bottom.
7. The RTO + SCR combined treatment process unit according to claim 6, wherein the surface of the heat storage bricks (53) and the SCR catalyst bricks (54) are provided with a plurality of third grooves (531).
8. The RTO + SCR combined treatment process device according to claim 7, wherein the sidewalls of the second groove are provided with a protrusion (521) vertically upward, and the volume of the protrusion (521) is smaller than the volume of the third groove (531).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122720279.9U CN216384208U (en) | 2021-11-08 | 2021-11-08 | RTO + SCR combined treatment process device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122720279.9U CN216384208U (en) | 2021-11-08 | 2021-11-08 | RTO + SCR combined treatment process device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216384208U true CN216384208U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122720279.9U Active CN216384208U (en) | 2021-11-08 | 2021-11-08 | RTO + SCR combined treatment process device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216384208U (en) |
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2021
- 2021-11-08 CN CN202122720279.9U patent/CN216384208U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 629000 No. 1, Qifeng Middle Road, high tech Zone, Suining City, Sichuan Province Patentee after: Sichuan Tuopule Technology Co.,Ltd. Country or region after: China Address before: 629000 No. 1, Qifeng Middle Road, high tech Zone, Suining City, Sichuan Province Patentee before: Sichuan Tuobule Technology Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |