CN112316665A - Waste gas treatment system with pretreatment, zeolite rotation and RCO and waste gas treatment method thereof - Google Patents
Waste gas treatment system with pretreatment, zeolite rotation and RCO and waste gas treatment method thereof Download PDFInfo
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- CN112316665A CN112316665A CN202010966667.2A CN202010966667A CN112316665A CN 112316665 A CN112316665 A CN 112316665A CN 202010966667 A CN202010966667 A CN 202010966667A CN 112316665 A CN112316665 A CN 112316665A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Abstract
The invention relates to a waste gas treatment system with pretreatment, zeolite rotation and RCO (residual gas oxidation), which comprises a pretreatment device, a zeolite rotation device, an RCO (residual gas oxidation) device and a smoke exhaust pipe, wherein the pretreatment device is provided with an air inlet pipe for waste gas to enter and an air outlet pipe fixedly connected with the zeolite rotation device; a plurality of zeolite modules clamped between the first mounting groove and the second mounting groove are arranged between the two brackets; the first shell is also provided with a cover plate, the lower end of the cover plate extends downwards to form a first partition plate, and a first accommodating cavity and a second accommodating cavity are formed among the lower bottom plate, the bracket, the zeolite module and the first partition plate; simple structure, the dismouting, adjust convenient, improved work efficiency, it is wide to be suitable for operational environment.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of waste gas treatment, in particular to a waste gas treatment system with pretreatment, zeolite circulation and RCO and a waste gas treatment method thereof.
[ background of the invention ]
In the prior art, zeolite rotation usually adopts the superposition of one or more zeolites, so as to carry out the work of adsorption, desorption and the like, the zeolite rotation has large volume, hoisting equipment is required to be used for dismounting, the replacement is inconvenient when a fault occurs, and the problems of poor adsorption and desorption effects, short service life and the like of the zeolite rotation can also be caused by the simple superposition of several zeolites; for the RCO device, the ports for exhaust gas to enter and hot gas to be discharged after combustion treatment are switched continuously and mutually by reversing action of the reversing valve in the prior art, when the reversing action of the reversing valve fails or is reversed slowly, problems are difficult to find, faults are caused, and even the whole work is stopped; thus, the prior art does not satisfy our needs.
[ summary of the invention ]
In order to solve the problems, the invention provides an exhaust gas treatment system with pretreatment, zeolite circulation and RCO, which is convenient to install and has high efficiency, and an exhaust gas treatment method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a waste gas treatment system with pretreatment, zeolite rotation and RCO comprises a pretreatment device, a zeolite rotation device, an RCO device and a smoke exhaust pipe, wherein the pretreatment device is provided with an air inlet pipe for waste gas to enter and an air outlet pipe fixedly connected with the zeolite rotation device; the support mainly comprises a first fixing plate, a second fixing plate and a connecting plate for connecting the first fixing plate and the second fixing plate, wherein a first mounting groove and a second mounting groove are formed among the first fixing plate, the second fixing plate and the connecting plate, and a plurality of zeolite modules which are clamped between the first mounting groove and the second mounting groove and are stacked together are arranged between the two supports; the first shell is also provided with a cover plate, the lower end of the cover plate extends downwards to form a first partition plate, and a first accommodating cavity and a second accommodating cavity are formed among the lower bottom plate, the bracket, the zeolite module and the first partition plate; the upper end of the cover plate is provided with a first air outlet communicated with the first accommodating cavity and a first air inlet communicated with the second accommodating cavity; a second air inlet connected with the air outlet pipe is formed in one side, located at the first air outlet, of the first shell, and a second air outlet is formed in the other side of the first shell; the RCO device is provided with a third air inlet, a fourth air outlet and a fifth air outlet, and the smoke exhaust pipe is provided with a fourth air inlet; the first air outlet and the fifth air outlet are communicated with the fourth air inlet through a first pipeline and a second pipeline respectively, the first air inlet is communicated with the fourth air outlet through a third pipeline, the second air inlet is communicated with the air outlet pipe, and the second air outlet is communicated with the third air inlet through a fourth pipeline.
As a preferred embodiment, further defined is: the lateral wall of first fixed plate and second fixed plate is circular-arcly, supply when being provided with the assembly on the lower plate first fixed plate and second fixed plate male first draw-in groove and second draw-in groove, still be provided with on the lower plate and be located fixed logical groove between first draw-in groove and the second draw-in groove, the connecting plate lower extreme be provided with fixed lead to the screw hole that the groove was aimed mutually, the support passes through bolt fixed connection and is in on the lower plate.
As a preferred embodiment, further defined is: the first clamping groove, the second clamping groove and the fixed through groove are all coaxially arranged.
As a preferred embodiment, further defined is: the zeolite wheel rotating device further comprises a rotary table and a first motor, the lower bottom plate is fixedly connected to the rotary table, and the first motor is connected with the rotary table through an output shaft in a gear mode.
As a preferred embodiment, further defined is: the zeolite wheel turning device further comprises first separation curtains arranged on the inner walls of the front end and the rear end of the first shell, the first separation curtains separate the installation cavity into a first installation cavity and a second installation cavity, and the first separation curtains are tightly attached to the outer peripheral surface of the support or the zeolite module during operation.
As a preferred embodiment, further defined is: the zeolite module is fan-shaped, and the support and the zeolite module are cylindrical after being assembled.
As a preferred embodiment, further defined is: the RCO device comprises a second shell, a third installation cavity is arranged in the second shell, a combustion chamber, a catalytic chamber and a gas chamber are sequentially arranged in the third installation cavity from top to bottom, a second partition plate extending to the lower end of the gas chamber is arranged at the upper end of the catalytic chamber, the catalytic chamber and the gas chamber are respectively partitioned by the second partition plate to form a first catalytic chamber, a second catalytic chamber, a first gas chamber and a second gas chamber, a third gas inlet is communicated with the first gas chamber, and a fourth gas outlet and a fifth gas outlet are communicated with the second gas chamber; still be provided with between fourth gas outlet and the fifth gas outlet and be located the heat accumulation runner in the air chamber, the third air inlet sets up the lower extreme of heat accumulation runner, be provided with the confession on the second division board the through-hole that the heat accumulation runner was placed, the RCO device is still including setting up the second motor of second shell periphery lower extreme, the output shaft of second motor with the lower extreme fixed connection of heat accumulation runner, the coaxial a plurality of heat accumulation pieces that are provided with on the heat accumulation runner.
As a preferred embodiment, further defined is: still be provided with flame projecting device and gas vent in the combustion chamber, the gas vent pass through the fifth pipeline with the fourth air inlet is connected.
As a preferred embodiment, further defined is: the second shell is cylindrical, and the heat storage rotating wheel and the second shell are coaxially arranged.
A method of treating exhaust gas comprising an exhaust gas treatment system having pretreatment, zeolite circulation and RCO according to any of claims 1-10, comprising the steps of:
step S1, the waste gas enters the pretreatment device from the gas inlet pipe, is pretreated and then is discharged through the gas outlet pipe;
step S2, enabling the waste gas discharged by the gas outlet pipe and processed to enter the first installation cavity from the second gas inlet, adsorbing the waste gas by the zeolite module which rotates into the first installation cavity after desorption, enabling the adsorbed clean gas to enter the first accommodation cavity, sequentially enabling the clean gas to pass through the first gas outlet, the first pipeline and the fourth gas inlet, then entering a smoke exhaust pipe, and discharging the clean gas to the outside through the smoke exhaust pipe;
step S3, allowing a part of hot gas generated after combustion treatment of the RCO device to enter the second accommodating cavity through the fourth air outlet, the third pipeline and the first air inlet, performing desorption treatment on the zeolite module which is adsorbed and then rotates into the second mounting cavity, and discharging high-concentration waste gas generated after desorption through the second air outlet;
step S4, the high-concentration exhaust gas discharged from the second gas outlet sequentially passes through the fourth pipeline and the third gas inlet and enters the first gas chamber, the heat storage rotating wheel storing heat rotates into the first gas chamber and preheats the high-concentration exhaust gas, and the preheated high-concentration exhaust gas passes through the first catalytic chamber and enters the combustion chamber for combustion;
step S5, the combusted carbon dioxide enters a smoke exhaust pipe through the exhaust port, the fifth pipeline and the fourth air inlet and is exhausted to the outside through the smoke exhaust pipe, hot air generated after combustion treatment enters the second air chamber through the second catalytic chamber, part of the hot air enters the second containing cavity through the fourth air outlet, the third pipeline and the first air inlet and rotates to the zeolite module in the second installation cavity after adsorption for desorption treatment of the next cycle, the heat of the other part of the hot air is accumulated on the heat accumulation sheet when rotating to the heat accumulation rotating wheel in the second air chamber, and the hot air after heat exchange sequentially passes through the fifth air outlet, the second pipeline and the fourth air inlet and then enters the smoke exhaust pipe and is exhausted to the outside through the smoke exhaust pipe.
The beneficial effects of the invention are as follows:
1. the invention is provided with the support, the lower bottom plate is provided with the first clamping groove, the second clamping groove and the fixing through groove for fixing, and a user can freely increase and decrease the number of the supports and adjust the space between the supports according to the waste gas concentration and the zeolite adsorption effect, so that the invention is suitable for the zeolites with different sizes and numbers, has simple structure, convenient assembly, disassembly and adjustment, improves the working efficiency and is suitable for wide working environment;
2. the invention is provided with the first curtain and separates the installation cavity into the first installation cavity and the second installation cavity, so that the adsorption and desorption processes of zeolite are separated, the situation that untreated high-air-volume and low-concentration waste gas enters the second installation cavity from the first installation cavity and is mixed with low-air-volume and high-concentration waste gas generated after desorption is effectively reduced, the waste gas treated by the RCO device is always in high concentration, the energy consumption is reduced, and the working efficiency is improved;
3. the first separating plate is arranged, clean gas generated by adsorption enters the first accommodating cavity, hot gas for desorption is located in the second accommodating cavity, the two gases are not interfered with each other, the temperature drop caused by contact of the hot gas for desorption and the clean gas is avoided, so that the desorption of the zeolite module is insufficient, a series of linkage conditions such as poor adsorption effect and the like of the zeolite module are caused in the subsequent circulating process, the energy consumption is reduced, and the working efficiency is improved;
4. the heat accumulation plate in the RCO device is arranged on the heat accumulation rotating wheel driven by the second motor, so that the heat accumulation plate accumulating heat can continuously rotate to the first air chamber to preheat high-concentration waste gas after the desorption of the zeolite module, the heat accumulation plate losing heat after heat exchange can continuously rotate to the second air chamber, hot gas generated after combustion treatment can reheat the heat accumulation plate, the heat utilization rate and the continuity of the whole process are ensured, the occurrence of the conditions of failure or slow reversing and the like caused by the reversing action of the reversing valve in the prior art is effectively avoided, the failure occurrence rate is reduced, and the working efficiency is improved.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of the invention;
FIG. 2 is a schematic structural view of a zeolite wheel;
FIG. 3 is an exploded schematic view of a zeolite wheel cycle;
FIG. 4 is a transverse cross-sectional view of the zeolite wheel;
fig. 5 is a schematic structural view of the stent.
[ detailed description ] embodiments
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1 to 5, an exhaust gas treatment system with pretreatment, zeolite rotation and RCO comprises a pretreatment device 1, a zeolite rotation device 2, an RCO device 3 and a smoke exhaust pipe 4, wherein the pretreatment device 1 is provided with an air inlet pipe 11 for allowing exhaust gas to enter and an air outlet pipe 12 fixedly connected with the zeolite rotation device 2, the zeolite rotation device 2 comprises a first shell 21, an installation cavity is arranged in the first shell 21, and a lower bottom plate 22 and a plurality of brackets 23 fixedly connected to the lower bottom plate 22 are arranged in the installation cavity; the support 23 mainly comprises a first fixing plate 231, a second fixing plate 232 and a connecting plate 233 connecting the first fixing plate 231 and the second fixing plate 232, wherein a first mounting groove 234 and a second mounting groove 235 are formed between the first fixing plate 231, the second fixing plate 232 and the connecting plate 233, and a plurality of zeolite modules 24 clamped between the first mounting groove 234 and the second mounting groove 235 and stacked together are arranged between the two supports 23; the first shell 21 is further provided with a cover plate 211, the lower end of the cover plate 211 extends downwards to form a first partition plate 212, and a first accommodating cavity 221 and a second accommodating cavity 222 are formed among the lower bottom plate 22, the bracket 23, the zeolite module 24 and the first partition plate 212; the upper end of the cover plate 211 is provided with a first air outlet 213 communicated with the first accommodating cavity 221 and a first air inlet 214 communicated with the second accommodating cavity 222; a second air inlet 215 connected with the air outlet pipe 12 is arranged on one side of the first outer shell 21 positioned at the first air outlet 213, and a second air outlet 216 is arranged on the other side of the first outer shell 21; the RCO device 3 is provided with a third air inlet 31, a fourth air outlet 32 and a fifth air outlet 33, and the smoke exhaust pipe 4 is provided with a fourth air inlet 41; the first air outlet 213 and the fifth air outlet 33 are respectively communicated with the fourth air inlet 41 through a first pipeline 5 and a second pipeline 6, the first air inlet 214 is communicated with the fourth air outlet 32 through a third pipeline 7, the second air inlet 215 is communicated with the air outlet pipe 12, and the second air outlet 216 is communicated with the third air inlet 31 through a fourth pipeline 8; the first partition plate 212 is arranged, clean gas generated by adsorption enters the first accommodating cavity 221, hot gas for desorption is located in the second accommodating cavity 222, the two gases are not interfered with each other, and the problem that the temperature is reduced due to contact between the hot gas for desorption and the clean gas, so that the zeolite module 24 is insufficiently desorbed, a series of linkage conditions such as poor adsorption effect and the like of the zeolite module 24 occur in the subsequent circulation process is avoided, the energy consumption is reduced, and the working efficiency is improved; the structure is simple, the disassembly, the assembly and the adjustment are convenient, the working efficiency is improved, and the application range is wide; the first pipeline 5, the second pipeline 6, the third pipeline 7, the fourth pipeline 8, the fifth pipeline 9 and the air outlet pipe 12 are all provided with a fan 10; further, in the present embodiment, the first partition plate 212 is disposed in a plane, and the first partition plate 212 is a heat insulation plate, and a user may set the first partition plate 212 to be semicircular according to the concentration of the exhaust gas and the adsorption effect of the zeolite, so that the ratio of the volume of the first receiving chamber 221 to the volume of the second receiving chamber 222 is 2: 1. 3: 1 or 4: 1, free set, so that the zeolite module 24 cools as quickly as possible and the desorption and adsorption process is more continuous.
As shown in fig. 3 to 5, in this embodiment, the side walls of the first fixing plate 231 and the second fixing plate 232 are arc-shaped, the lower plate 22 is provided with a first clamping groove 223 and a second clamping groove 224 into which the first fixing plate 231 and the second fixing plate 232 are inserted during assembly, the lower plate 22 is further provided with a fixing through groove 225 located between the first clamping groove 223 and the second clamping groove 224, the lower end of the connecting plate 233 is provided with a screw hole 236 aligned with the fixing through groove 225, and the bracket 23 is fixedly connected to the lower plate 22 through a bolt; the first clamping groove 223, the second clamping groove 224 and the fixed through groove 225 are all coaxially arranged; the zeolite rotating device 2 further comprises a rotating disc 25 and a first motor 26, the lower base plate 22 is fixedly connected to the rotating disc 25, and the first motor 26 is in gear connection with the rotating disc 25 through an output shaft; the zeolite module 24 is fan-shaped, and the bracket 23 and the zeolite module 24 are cylindrical after being assembled; a bracket 23 is arranged, and the lower bottom plate 22 is provided with a first clamping groove 223, a second clamping groove 224 and a fixing through groove 225 for fixing; furthermore, in this embodiment, the number of the supports 23 and the number of the zeolite modules 24 are 6, so that a user can freely increase or decrease the number of the supports and adjust the spacing between the supports according to the exhaust gas concentration and the zeolite adsorption effect, thereby being suitable for zeolites with different sizes and numbers, and the supports 23 and the zeolite modules 24 can be set to be 8, 9, 10 or 12, so that the structure is simple, the assembly, disassembly and adjustment are convenient, the working efficiency is improved, and the applicable working environment is wide.
As shown in fig. 3, in this embodiment, the zeolite wheel turning device 2 further includes first curtains 27 disposed on inner walls of front and rear ends of the first housing 21, the first curtains 27 partition the installation cavity into a first installation cavity 217 and a second installation cavity 218, and the first curtains 27 are closely attached to an outer circumferential surface of the bracket 23 or the zeolite module 24 during operation; the first curtain 27 separates the installation cavity into a first installation cavity 217 and a second installation cavity 218, so that the adsorption and desorption processes of zeolite are separated, the situation that untreated high-air-volume and low-concentration waste gas enters the second installation cavity from the first installation cavity and is mixed with low-air-volume and high-concentration waste gas generated after desorption is effectively reduced, the waste gas treated by the RCO device 3 is always in high concentration, the energy consumption is reduced, and the working efficiency is improved.
As shown in fig. 1, in the present embodiment, the RCO device 3 includes a second housing 34, a third installation cavity is disposed in the second housing 34, a combustion chamber 351, a catalyst chamber and a gas chamber are sequentially disposed in the third installation cavity from top to bottom, a second partition plate 36 extending to the lower end of the gas chamber is disposed at the upper end of the catalyst chamber, the first catalyst chamber 352, the second catalyst chamber 353, the first gas chamber 354 and the second gas chamber 355 are respectively formed by partitioning the catalyst chamber and the gas chamber by the second partition plate 36, the third gas inlet 31 is communicated with the first gas chamber 354, and the fourth gas outlet 32 and the fifth gas outlet 33 are both communicated with the second gas chamber 355; a heat storage runner 37 positioned in the air chamber is further arranged between the fourth air outlet 32 and the fifth air outlet 33, the third air inlet 31 is arranged at the lower end of the heat storage runner 37, a through hole 361 for placing the heat storage runner 37 is arranged on the second partition plate 36, the RCO device 3 further comprises a second motor 38 arranged at the lower end of the outer periphery of the second shell 34, an output shaft of the second motor 38 is fixedly connected with the lower end of the heat storage runner 37, and a plurality of heat storage sheets 371 are coaxially arranged on the heat storage runner 37; the combustion chamber 351 is also internally provided with a flame projecting device 39 and an exhaust port 356, and the exhaust port 356 is connected with the fourth air inlet 41 through a fifth pipeline 9; the second casing 34 is cylindrical, and the heat storage runner 37 and the second casing 34 are coaxially arranged; heat accumulation piece 371 in the RCO device 3 sets up on the heat accumulation runner 37 by second motor 38 drive for it is right that heat accumulation piece 371 can constantly rotate to first air chamber 354 to have amassed heat accumulation piece the high concentration waste gas after zeolite module 24 desorption carries out the preheating treatment, lose thermal heat accumulation piece 371 can constantly rotate to second air chamber 355 again after the heat transfer, make the steam that produces after the combustion process reheat heat accumulation piece 371, guarantee thermal rate of utilization and the continuity of whole process, effectively avoid the emergence because of the switching-over effect of switching-over valve inefficacy or the condition such as the switching-over is slow among the prior art, the fault incidence of reduction, work efficiency has been improved.
Furthermore, all be provided with waste gas concentration sensor in outlet duct 12 and the fourth pipeline 8, waste gas concentration sensor's signal output part links to each other with PLC's input, and PLC knows waste gas concentration's size in time according to the signal received to the rotational speed of control first motor 26 improves zeolite wheel device 2's adsorption effect and the holistic work efficiency of system.
A method of treating exhaust gas comprising an exhaust gas treatment system with pretreatment, zeolite circulation and RCO according to any of claims 1-10, as shown in figure 1, comprising the steps of:
step S1, the waste gas enters the pretreatment device 1 from the gas inlet pipe 11, is pretreated and then is discharged through the gas outlet pipe 12;
step S2, the exhaust gas discharged and processed by the outlet pipe 12 enters the first installation cavity 217 from the second inlet 215, and after desorption, the exhaust gas is adsorbed by the zeolite module 24 rotating into the first installation cavity 217, and the adsorbed clean gas enters the first accommodation cavity 221, passes through the first outlet 213, the first pipeline 5 and the fourth inlet 41 in sequence, enters the smoke exhaust pipe 4, and is discharged to the outside through the smoke exhaust pipe 4;
step S3, a part of hot gas generated by the combustion process of the RCO device 3 enters the second accommodating cavity 222 through the fourth gas outlet 32, the third pipeline 7 and the first gas inlet 214, and desorbs the zeolite module 24 that has been adsorbed and then rotated into the second mounting cavity 218, and high-concentration waste gas generated by desorption is discharged through the second gas outlet 216;
step S4, the high-concentration exhaust gas discharged from the second outlet 216 sequentially passes through the fourth pipe 8 and the third inlet 31 and enters the first air chamber 354, the regenerative runner 37 storing heat rotates into the first air chamber 354 to preheat the high-concentration exhaust gas, and the preheated high-concentration exhaust gas passes through the first catalyst chamber 352 and enters the combustion chamber 351 to be combusted;
step S5, the burned carbon dioxide enters the smoke exhaust pipe 4 through the exhaust port 356, the fifth pipeline 9 and the fourth air inlet 41 and is exhausted to the outside, the hot gas generated after the burning process enters the second air chamber 355 through the second catalytic chamber 353, a part of the hot gas enters the second accommodating chamber 222 through the fourth air outlet 32, the third pipeline 7 and the first air inlet 214 and is subjected to desorption process of the next cycle on the zeolite module 24 which is rotated into the second mounting chamber 218 after being adsorbed, the heat of the other part of the hot gas is accumulated on the heat accumulation sheet 371 when being rotated to the heat accumulation runner 37 in the second air chamber 355, and the hot gas after the heat exchange passes through the fifth air outlet 33, the second pipeline 6 and the fourth air inlet 41 in sequence and enters the smoke exhaust pipe 4 and is exhausted to the outside through the fifth air outlet 33, the second pipeline 6 and the fourth air inlet 41.
The whole waste gas treatment process is continuous, a reversing valve is not needed, meanwhile, ports for discharging hot gas generated after waste gas enters and is combusted and treated do not need to be switched with each other continuously, so that the gas moves towards a specific pipeline in a one-way mode, the problem that the fault occurs due to failure of reversing action of the reversing valve or slow reversing is avoided, even the whole work is stopped and the like, the fault occurrence rate is reduced, the energy consumption is reduced, and the working efficiency is improved.
Claims (10)
1. An exhaust treatment system having pretreatment, zeolite circulation, and RCO, characterized by: the device comprises a pretreatment device (1), a zeolite rotary device (2), an RCO device (3) and a smoke exhaust pipe (4), wherein the pretreatment device (1) is provided with an air inlet pipe (11) for waste gas to enter and an air outlet pipe (12) fixedly connected with the zeolite rotary device (2), the zeolite rotary device (2) comprises a first shell (21), an installation cavity is arranged in the first shell (21), and a lower bottom plate (22) and a plurality of supports (23) fixedly connected to the lower bottom plate (22) are arranged in the installation cavity; the support (23) mainly comprises a first fixing plate (231), a second fixing plate (232) and a connecting plate (233) for connecting the first fixing plate (231) and the second fixing plate (232), wherein a first mounting groove (234) and a second mounting groove (235) are formed between the first fixing plate (231), the second fixing plate (232) and the connecting plate (233), and a plurality of zeolite modules (24) which are clamped between the first mounting groove (234) and the second mounting groove (235) and stacked together are arranged between the two supports (23); the first shell (21) is further provided with a cover plate (211), the lower end of the cover plate (211) extends downwards to form a first partition plate (212), and a first accommodating cavity (221) and a second accommodating cavity (222) are formed among the lower bottom plate (22), the bracket (23), the zeolite module (24) and the first partition plate (212); the upper end of the cover plate (211) is provided with a first air outlet (213) communicated with the first accommodating cavity (221) and a first air inlet (214) communicated with the second accommodating cavity (222); a second air inlet (215) connected with the air outlet pipe (12) is formed in one side, located at the first air outlet (213), of the first shell (21), and a second air outlet (216) is formed in the other side of the first shell (21); the RCO device (3) is provided with a third air inlet (31), a fourth air outlet (32) and a fifth air outlet (33), and the smoke exhaust pipe (4) is provided with a fourth air inlet (41); the first air outlet (213) and the fifth air outlet (33) are communicated with the fourth air inlet (41) through a first pipeline (5) and a second pipeline (6) respectively, the first air inlet (214) is communicated with the fourth air outlet (32) through a third pipeline (7), the second air inlet (215) is communicated with the air outlet pipe (12), and the second air outlet (216) is communicated with the third air inlet (31) through a fourth pipeline (8).
2. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 1, wherein: the lateral wall of first fixed plate (231) and second fixed plate (232) is circular-arcly, supply when being provided with the assembly on lower plate (22) first fixed plate (231) and second fixed plate (232) male first draw-in groove (223) and second draw-in groove (224), still be provided with on lower plate (22) and be located fixed logical groove (225) between first draw-in groove (223) and second draw-in groove (224), connecting plate (233) lower extreme be provided with fixed lead to screw hole (236) that groove (225) were aligned mutually, support (23) pass through bolt fixed connection in on lower plate (22).
3. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 2, wherein: the first clamping groove (223), the second clamping groove (224) and the fixed through groove (225) are all coaxially arranged.
4. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 3, wherein: the zeolite rotating device (2) further comprises a rotating disc (25) and a first motor (26), the lower base plate (22) is fixedly connected to the rotating disc (25), and the first motor (26) is in gear connection with the rotating disc (25) through an output shaft.
5. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 4, wherein: the zeolite wheel turning device (2) further comprises first curtains (27) arranged on the inner walls of the front end and the rear end of the first shell (21), the first curtains (27) divide the installation cavity into a first installation cavity (217) and a second installation cavity (218), and the first curtains (27) are tightly attached to the outer peripheral surface of the support (23) or the zeolite module (24) during operation.
6. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 5, wherein: the zeolite module (24) is fan-shaped, and the bracket (23) and the zeolite module (24) are cylindrical after being assembled.
7. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 6, wherein: the RCO device (3) comprises a second shell (34), a third installation cavity is arranged in the second shell (34), a combustion chamber (351), a catalytic chamber and a gas chamber are sequentially arranged in the third installation cavity from top to bottom, a second partition plate (36) extending to the lower end of the gas chamber is arranged at the upper end of the catalytic chamber, the catalytic chamber and the gas chamber are respectively partitioned by the second partition plate (36) to form a first catalytic chamber (352), a second catalytic chamber (353), a first gas chamber (354) and a second gas chamber (355), the third gas inlet (31) is communicated with the first gas chamber (354), and the fourth gas outlet (32) and the fifth gas outlet (33) are communicated with the second gas chamber (355); still be provided with between fourth gas outlet (32) and fifth gas outlet (33) and be located heat accumulation runner (37) in the air chamber, third air inlet (31) set up the lower extreme of heat accumulation runner (37), be provided with the confession on second division board (36) through-hole (361) that heat accumulation runner (37) were placed, RCO device (3) still including setting up second motor (38) of second shell (34) periphery lower extreme, the output shaft of second motor (38) with the lower extreme fixed connection of heat accumulation runner (37), coaxial a plurality of heat accumulation pieces (371) of being provided with on heat accumulation runner (37).
8. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 7, wherein: and a flame spraying device (39) and an exhaust port (356) are further arranged in the combustion chamber (351), and the exhaust port (356) is connected with the fourth air inlet (41) through a fifth pipeline (9).
9. The exhaust gas treatment system with pretreatment, zeolite circulation, and RCO of claim 8, wherein: the second housing (34) is cylindrical, and the heat storage rotor (37) and the second housing (34) are coaxially arranged.
10. A method of treating exhaust gas comprising an exhaust gas treatment system with pretreatment, zeolite circulation and RCO according to any of claims 1-9, characterized in that: the method comprises the following steps:
step S1, enabling waste gas to enter the pretreatment device (1) from the air inlet pipe (11), and discharging the waste gas through the air outlet pipe (12) after the waste gas is pretreated;
step S2, enabling the waste gas discharged by the gas outlet pipe (12) and processed to enter the first installation cavity (217) from the second gas inlet (215), adsorbing the waste gas by the zeolite module (24) which rotates to the first installation cavity (217) after desorption, enabling the adsorbed clean gas to enter the first accommodation cavity (221), sequentially pass through the first gas outlet (213), the first pipeline (5) and the fourth gas inlet (41), enter the smoke exhaust pipe (4) and be discharged to the outside through the smoke exhaust pipe;
step S3, a part of hot gas generated after combustion treatment of the RCO device (3) enters the second accommodating cavity (222) through the fourth air outlet (32), the third pipeline (7) and the first air inlet (214), desorption treatment is carried out on the zeolite module (24) which is adsorbed and then rotates into the second mounting cavity (218), and high-concentration waste gas generated after desorption is discharged through the second air outlet (216);
step S4, the high-concentration exhaust gas discharged from the second gas outlet (216) sequentially passes through the fourth pipe (8) and the third gas inlet (31) and enters the first gas chamber (354), the heat accumulation runner (37) accumulating heat rotates into the first gas chamber (354) and preheats the high-concentration exhaust gas, and the preheated high-concentration exhaust gas passes through the first catalyst chamber (352) and enters the combustion chamber (351) for combustion treatment;
step S5, the burnt carbon dioxide enters the smoke exhaust pipe (4) through the exhaust port (356), the fifth pipeline (9) and the fourth air inlet (41) and is exhausted to the outside through the smoke exhaust pipe, and hot gas generated after the combustion treatment enters a second air chamber (355) after passing through the second catalytic chamber (353), one part of the hot gas enters the second containing cavity (222) through the fourth air outlet (32), the third pipeline (7) and the first air inlet (214) and is subjected to desorption treatment of the next cycle on the zeolite module (24) which is adsorbed and then rotates into the second mounting cavity (218), the heat of the other part of the hot gas is accumulated on the heat accumulation sheets (371) when rotating to the heat accumulation rotating wheel (37) in the second air chamber (355), and the hot gas after the heat exchange passes through the fifth air outlet (33), the second pipeline (6) and the fourth air inlet (41) in sequence, enters a smoke exhaust pipe (4) and is exhausted to the outside through the smoke exhaust pipe.
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