A catalytic combustion RCO waste gas treatment device

Abstract

The present invention discloses a catalytic combustion RCO waste gas treatment device, which relates to the technical field of waste gas treatment and has the advantage of preheating untreated waste gas by the heat carried by the treated gas, thereby reducing heat waste. The main points of its technical solution are as follows: It includes a combustion box and an emission box. The combustion box and the emission box are connected through a preheating mechanism. An electric heating grid and a placement grid are arranged between the opposite sides inside the combustion box. The placement grid is located above the electric heating grid, and a catalyst is provided on the placement grid. An exhaust pipe and an intake pipe are provided at the top of the emission box. A waste heat recovery mechanism for transferring the heat in the treated gas to the untreated waste gas is arranged inside the emission box. The exhaust pipe, the intake pipe, and the preheating mechanism are all connected to the waste heat recovery mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and specifically to a catalytic combustion RCO waste gas treatment device. Background Art

[0002] Waste gas refers to the toxic and harmful gases discharged by humans during the production and living processes. Especially chemical plants, steel plants, pharmaceutical factories, coking plants, and oil refineries, etc., emit waste gas with a strong smell, which seriously pollutes the environment and affects human health. Therefore, we need to treat waste gas. The existing waste gas treatment generally uses an RCO catalytic combustion waste gas treatment device to treat waste gas.

[0003] Catalytic combustion refers to the combustion of combustibles under the action of a catalyst. It is a combustion method that uses an appropriate catalyst to decompose and oxidize the combustible substances in harmful gases at a lower temperature. Compared with direct combustion, catalytic combustion has a lower temperature and more complete combustion. The catalyst used in catalytic combustion is a multi-component substance of noble metals and metal oxides with a large specific surface area. Catalytic combustion is flameless combustion, so it is suitable for occasions with high safety requirements.

[0004] However, when the existing RCO catalytic combustion waste gas treatment device is in use, it is necessary to heat the gas to be catalyzed to meet the catalytic adjustment. However, the gas after catalytic combustion treatment is directly discharged carrying heat, resulting in a large waste of heat resources. Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. Summary of the Invention

[0005] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a catalytic combustion RCO waste gas treatment device, which has the advantage of preheating the untreated waste gas with the heat carried by the treated gas, thereby reducing heat waste.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a catalytic combustion RCO waste gas treatment device, including a combustion chamber and an emission chamber. The combustion chamber and the emission chamber are connected through a preheating mechanism. Between the opposite sides in the combustion chamber, there are an electric heating grid and a placement grid. The placement grid is located above the electric heating grid, and a catalyst is provided on the placement grid. At the top of the emission chamber, there are an exhaust pipe and an intake pipe. An exhaust heat recovery mechanism is provided in the emission chamber for transferring the heat in the treated gas to the untreated waste gas. The exhaust pipe, the intake pipe, and the preheating mechanism are all connected to the exhaust heat recovery mechanism.

[0008] By adopting the above technical solution, during use, the waste gas enters the waste heat recovery mechanism in the discharge box from the intake pipe, and then passes through the preheating mechanism from the waste heat recovery mechanism into the combustion box. The waste gas in the combustion box is catalytically combusted by the electric heating grid and the catalyst. The treated gas enters the waste heat recovery mechanism in the discharge box through the preheating mechanism, and then is discharged from the exhaust pipe;

[0009] During the process of the treated gas being discharged from the exhaust pipe in the waste heat recovery mechanism, the heat carried by the gas will be dissipated through the waste heat recovery mechanism to the untreated waste gas passing through the waste heat recovery mechanism. At this time, the waste gas can be preheated once, and the treated gas and the untreated waste gas in the waste heat recovery mechanism will not be mixed together;

[0010] When the treated gas enters the waste heat recovery mechanism in the discharge box through the preheating mechanism, the heat carried by the gas will be dissipated through the preheating mechanism to the untreated waste gas passing through the preheating mechanism. At this time, the waste gas can be preheated twice, and the treated gas and the untreated waste gas in the preheating mechanism will not be mixed together. The waste gas after secondary preheating enters the combustion box from the preheating mechanism, and the waste gas in the combustion box is catalytically combusted by the electric heating grid and the catalyst. Through the above process, the heat carried by the treated gas can be used to preheat the untreated waste gas, thereby reducing heat waste.

[0011] Preferably, the preheating mechanism includes a U-shaped baffle arranged in the combustion box, and the wall of the baffle is hollow. A sleeve is provided above one side of the baffle close to the discharge box, and one end of the sleeve away from the baffle passes through the combustion box and communicates with the discharge box. The sleeve communicates with the hollow wall of the baffle. A central pipe is provided between the combustion box and the discharge box, and one end of the central pipe close to the combustion box passes through the baffle and is located inside the baffle. The electric heating grid and the placement grid are both arranged between the opposite sides of the baffle and are both below the sleeve. A mounting plate is horizontally arranged between the opposite sides of the baffle, and the mounting plate is located below the electric heating grid. An opening groove is formed in the mounting plate, and a blower is provided at one end of the mounting plate close to the opening groove. An air inlet communicating with the hollow wall of the baffle is provided on one side of the baffle away from the sleeve, and the air inlet is located below the mounting plate. The central pipe and the sleeve both communicate with the waste heat recovery mechanism in the discharge box.

[0012] Preferably, the waste heat recovery mechanism includes two partition plates vertically arranged in the discharge box, and the two partition plates divide the inside of the discharge box into a filtering area, a water filling area, and an air intake area from left to right in sequence. The intake pipe is communicated with the air intake area, the exhaust pipe is communicated with the water filling area, and an inverted L-shaped air guide pipe communicated with the central pipe is arranged in the discharge box. The end of the air guide pipe far away from the central pipe is vertically downward and located in the water in the water filling area. An air extraction pump located in the water filling area is arranged on the air guide pipe, and the air extraction pump is located above the water surface in the water filling area. The filtering area and the air intake area are communicated through a plurality of heat conduction pipes, and each heat conduction pipe is arranged between the two partition plates. At this time, each heat conduction pipe is located in the water in the water filling area. A filtering member for filtering the waste gas entering the filtering area through the heat conduction pipe is arranged on the discharge box, and the sleeve is communicated with the filtering area.

[0013] Preferably, the filtering member includes transition boxes arranged on the front and rear sides of the discharge box. Communication grooves communicated with the transition boxes are arranged on the front and rear sides of the discharge box, and the communication grooves are communicated with the filtering area. A placing groove is formed on one side of each of the two transition boxes. Cover plates for closing the placing grooves are detachably connected to the two transition boxes. A sliding plate is horizontally slidably connected to the partition plate on one side of the filtering area. Two installation grooves are formed on the side of the sliding plate close to the partition plate, and the two installation grooves are distributed front and rear. Filtering plates are detachably connected to the two installation grooves. One of the installation grooves corresponds to each heat conduction pipe. The front end of the sliding plate passes through the communication groove and is located in the transition box on the front side of the discharge box. At this time, the other installation groove on the sliding plate is located in the transition box. A closing member for closing one of the communication grooves on the discharge box is arranged on the sliding plate. A pushing member for pushing the sliding plate to horizontally move on the partition plate is arranged on the discharge box. Air guiding members for blowing the waste gas in the transition box back to the filtering area are arranged on the two transition boxes.

[0014] Preferably, the closing member includes a U-shaped closing plate arranged on the sliding plate and sealing layers arranged on the front and rear sides of the closing plate. The sliding plate is located inside the closing plate and fixedly connected to the closing plate. The sealing layer on the front side of the closing plate abuts against the inner wall of the discharge box. First sealing gaskets are arranged on the groove walls of the two communication grooves close to the partition plate. The side of the sliding plate close to the partition plate is in contact with the first sealing gasket. The pushing member includes a push plate arranged on the closing plate. An electric cylinder located in one of the transition boxes is arranged on the discharge box, and the piston rod end of the electric cylinder passes through the box wall of the discharge box and is fixedly connected to the push plate.

[0015] Preferably, the air guide member includes a return pipe provided on the side of the transition box away from the pick-and-place groove, and one end of the return pipe away from the transition box communicates with the filtration area and extends into the filtration area. A plugging member for automatically closing the pipe orifice of the return pipe is provided at the pipe orifice of the return pipe extending into the filtration area. Connecting pipes are provided at the tops of both transition boxes, and one end of the connecting pipe away from the transition box passes through the box wall of the discharge box and is connected to the air guide pipe. One end of the connecting pipe connected to the air guide pipe is above the water surface in the water filling area, and a solenoid valve is provided on the connecting pipe.

[0016] Preferably, the plugging member includes a collar and a plurality of connecting columns provided on one side of the collar, and the connecting columns are evenly distributed along the circumferential direction of the collar. One end of each connecting column away from the collar is connected by a closing disc, and the closing disc is coaxial with the collar. A second sealing gasket is provided on the side of the closing disc close to the collar. The collar is sleeved on the return pipe, and the second sealing gasket on the closing disc abuts against the pipe orifice of the return pipe to close the pipe orifice of the return pipe. A tension spring is provided on the side of the collar away from the closing disc, and one end of the tension spring away from the collar is connected to the discharge box.

[0017] Preferably, a plurality of heat dissipation fins are provided on the outer wall of the central pipe, and each heat dissipation fin is located inside the sleeve.

[0018] Preferably, each heat conduction pipe is inclined, and the lowest end of the heat conduction pipe is close to the air inlet area.

[0019] Preferably, heat insulation layers are provided on the outer wall of the sleeve and the top of the outer wall of the combustion box. A drain pipe with a valve is provided on the discharge box, and the drain pipe communicates with the water filling area. An inspection port is provided on the front side of the combustion box, and a box plate for closing the inspection port is detachably connected to the combustion box.

[0020] The beneficial effects of the present invention are as follows: During use, waste gas enters the waste heat recovery mechanism in the discharge box from the intake pipe, then enters the combustion box through the preheating mechanism from the waste heat recovery mechanism, and the waste gas in the combustion box is catalytically combusted by the electric heating grid and the catalyst. The processed gas enters the waste heat recovery mechanism in the discharge box through the preheating mechanism, and then is discharged from the exhaust pipe;

[0021] During the process of the gas processed in the waste heat recovery mechanism being discharged from the exhaust pipe, the heat carried by the gas will be dissipated to the unprocessed waste gas passing through the waste heat recovery mechanism through the waste heat recovery mechanism. At this time, the waste gas can be preheated once, and the gas processed in the waste heat recovery mechanism and the unprocessed waste gas will not be mixed together;

[0022] When the processed gas enters the waste heat recovery mechanism in the emission box through the preheating mechanism, the heat carried by the gas will be dissipated to the unprocessed waste gas passing through the preheating mechanism through the preheating mechanism. At this time, the waste gas can be preheated for the second time. The processed gas and the unprocessed waste gas in the preheating mechanism will not be mixed together. The waste gas after the second preheating enters the combustion box, and the waste gas in the combustion box is catalytically combusted through the electric heating grid and the catalyst. Through the above process, the heat carried by the processed gas can be used to preheat the unprocessed waste gas, thereby reducing heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of this embodiment;

[0025] Figure 2 It is a schematic structural diagram of this embodiment for showing the partition board;

[0026] Figure 3 It is a schematic structural diagram of this embodiment for showing the heat sink;

[0027] Figure 4 It is a schematic structural diagram of this embodiment for showing the return pipe;

[0028] Figure 5 It is a schematic structural diagram of this embodiment for showing the connecting pipe;

[0029] Figure 6 It is a schematic structural diagram of this embodiment for showing the closing plate;

[0030] Figure 7 is Figure 4 an enlarged structural diagram of part A in

[0031] Figure 8 is Figure 4 an enlarged structural diagram of part B in.

[0032] Description of the reference numerals:

[0033] In the figure: 1, combustion chamber; 2, discharge chamber; 3, electric heating grid; 4, placement grid; 5, catalyst; 6, exhaust pipe; 7, intake pipe; 8, baffle; 9, sleeve; 10, central pipe; 12, mounting plate; 13, opening groove; 14, fan; 15, air inlet; 16, partition board; 17, filtration area; 18, water filling area; 19, intake area; 20, air duct; 21, air extraction pump; 22, heat conduction pipe; 23, transition box; 24, communication groove; 25, access slot; 26, cover plate; 27, sliding plate; 28, mounting groove; 29, filter plate; 30, closing plate; 31, sealing layer; 32, first sealing gasket; 33, push plate; 34, electric cylinder; 35, return pipe; 36, connecting pipe; 37, solenoid valve; 38, collar; 39, connecting column; 40, closing disc; 41, second sealing gasket; 42, tension spring; 43, heat sink; 44, thermal insulation layer; 45, drain pipe; 46, maintenance opening; 47, box panel. Detailed implementation manner

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] A catalytic combustion RCO waste gas treatment device, such as Figure 1 and Figure 2 , includes a combustion chamber 1 and a discharge chamber 2. The combustion chamber 1 and the discharge chamber 2 are connected through a preheating mechanism. An electric heating grid 3 and a placement grid 4 are arranged between the opposite sides in the combustion chamber 1. The placement grid 4 is located above the electric heating grid 3, and a catalyst 5 is arranged on the placement grid 4. An exhaust pipe 6 and an intake pipe 7 are arranged at the top of the discharge chamber 2. A waste heat recovery mechanism for transferring the heat in the treated gas to the untreated waste gas is arranged in the discharge chamber 2. The exhaust pipe 6, the intake pipe 7, and the preheating mechanism are all connected to the waste heat recovery mechanism.

[0036] Such as Figure 1 and Figure 2 , during use, the waste gas enters the waste heat recovery mechanism in the discharge chamber 2 from the intake pipe 7, then enters the combustion chamber 1 through the preheating mechanism from the waste heat recovery mechanism, and the waste gas in the combustion chamber 1 is catalytically combusted by the electric heating grid 3 and the catalyst 5. The treated gas enters the waste heat recovery mechanism in the discharge chamber 2 through the preheating mechanism, and then is discharged from the exhaust pipe 6;

[0037] During the process of the treated gas discharged from the exhaust pipe 6 in the waste heat recovery mechanism, the heat carried by the gas will be dissipated to the untreated waste gas passing through the waste heat recovery mechanism through the waste heat recovery mechanism. At this time, the waste gas can be preheated once, and the treated gas and the untreated waste gas in the waste heat recovery mechanism will not be mixed together;

[0038] When the treated gas enters the waste heat recovery mechanism in the discharge box 2 through the preheating mechanism, the heat carried by the gas will be dissipated to the untreated waste gas passing through the preheating mechanism through the preheating mechanism. At this time, the waste gas can be preheated twice, and the treated gas and the untreated waste gas in the preheating mechanism will not be mixed together. The waste gas after secondary preheating enters the combustion box 1 from the preheating mechanism, and the waste gas in the combustion box 1 is catalytically combusted through the electric heating grid 3 and the catalyst 5. Through the above process, the heat carried by the treated gas can be used to preheat the untreated waste gas, thereby reducing heat waste.

[0039] Such as Figure 1 and Figure 2 , the preheating mechanism includes a U-shaped baffle 8 arranged in the combustion box 1, and the wall of the baffle 8 is hollow. A sleeve 9 is provided above one side of the baffle 8 close to the discharge box 2, and one end of the sleeve 9 away from the baffle 8 passes through the combustion box 1 and communicates with the discharge box 2. The sleeve 9 communicates with the hollow wall of the baffle 8. A central tube 10 is provided between the combustion box 1 and the discharge box 2, and one end of the central tube 10 close to the combustion box 1 passes through the baffle 8 and is located inside the baffle 8. The electric heating grid 3 and the placement grid 4 are both arranged between the opposite sides of the baffle 8 and are both below the sleeve 9. A mounting plate 12 is horizontally arranged between the opposite sides of the baffle 8, and the mounting plate 12 is located below the electric heating grid 3. An opening groove 13 is formed in the mounting plate 12, and a fan 14 is provided at one end of the mounting plate 12 close to the opening groove 13. An air inlet 15 communicating with the hollow wall of the baffle 8 is provided on one side of the baffle 8 away from the sleeve 9, and the air inlet 15 is located below the mounting plate 12. The central tube 10 and the sleeve 9 are both communicated with the waste heat recovery mechanism in the discharge box 2.

[0040] Such as Figure 1 and Figure 2 , the untreated waste gas in the waste heat recovery mechanism enters the baffle 8 through the sleeve 9, and then is discharged into the space below the mounting plate 12 in the combustion box 1 from the air inlet 15 on the baffle 8. Then, the fan 14 is turned on to blow the waste gas into the baffle 8 above the mounting plate 12. After the waste gas is catalytically combusted through the electric heating grid 3 and the catalyst 5, the gas enters the waste heat recovery mechanism in the discharge box 2 through the central tube 10 and is then discharged from the exhaust pipe 6. When the treated gas passes through the central tube 10, the heat carried by the gas will be dissipated from the wall of the central tube 10 to the sleeve 9 to preheat the waste gas passing through the sleeve 9. Through the arrangement of the central tube 10 in the sleeve 9, the treated gas and the untreated waste gas in the sleeve 9 will not be mixed together;

[0041] During the process where the exhaust gas enters the baffle 8 from the sleeve 9 and then discharges into the combustion chamber 1 through the air inlet 15 on the baffle 8, since both the electric heating grid 3 and the placement grid 4 are arranged between the opposite sides of the baffle 8, heat loss in the combustion chamber 1 can be reduced through the U-shaped baffle 8 with a hollow plate wall, and it is simple and convenient to use.

[0042] As Figure 2 , the waste heat recovery mechanism includes two partitions 16 vertically arranged in the discharge box 2, and the two partitions 16 divide the interior of the discharge box 2 into a filtration area 17, a water filling area 18, and an air inlet area 19 from left to right in sequence. The intake pipe 7 communicates with the air inlet area 19, the exhaust pipe 6 communicates with the water filling area 18, a reverse L-shaped air guide pipe 20 communicating with the central pipe 10 is provided in the discharge box 2, and the end of the air guide pipe 20 away from the central pipe 10 is vertically downward in the water in the water filling area 18. A suction pump 21 located in the water filling area 18 is provided on the air guide pipe 20, and the suction pump 21 is above the water surface in the water filling area 18. The filtration area 17 and the air inlet area 19 are communicated through a number of heat conduction pipes 22, and each heat conduction pipe 22 is arranged between the two partitions 16. At this time, each heat conduction pipe 22 is in the water in the water filling area 18. A filter element for filtering the exhaust gas entering the filtration area 17 through the heat conduction pipes 22 is provided on the discharge box 2, and the sleeve 9 communicates with the filtration area 17.

[0043] As Figure 2 , the intake pipe 7 discharges the exhaust gas into the air inlet area 19, then the exhaust gas enters the filtration area 17 through the heat conduction pipes 22. After being filtered by the filter element, the exhaust gas in the filtration area 17 enters the sleeve 9, and then enters the baffle 8 from the sleeve 9. After catalytic combustion treatment of the exhaust gas in the combustion chamber 1 by the electric heating grid 3 and the catalyst 5, the suction pump 21 is turned on to make the treated gas enter the air guide pipe 20 from the central pipe 10 through the central pipe 10, and then the air guide pipe 20 blows the gas into the water in the water filling area 18. At this time, the waste heat in the gas will heat the water in the water filling area 18. At this time, since the heat conduction pipes 22 are in the water in the water filling area 18, during the process where the exhaust gas enters the filtration area 17 from the air inlet area 19 through the heat conduction pipes 22, the heat in the water can be dissipated to the exhaust gas passing through the heat conduction pipes 22 through the heat conduction pipes 22 to complete preheating of the exhaust gas. Heat conduction fins (not shown in the figure) located in the water are provided on the outer wall of the heat conduction pipes 22, and it is simple and convenient to use.

[0044] As Figure 1 and Figure 4 and Figure 6 and Figure 7, the filter element includes transition boxes 23 arranged on the front and rear sides of the discharge box 2. Connecting grooves 24 communicating with the transition boxes 23 are provided on both the front and rear sides of the discharge box 2, and the connecting grooves 24 communicate with the filtering area 17. Access slots 25 are formed on one side of each of the two transition boxes 23. Covers 26 for closing the access slots 25 are detachably connected to the two transition boxes 23. A slide plate 27 is horizontally slidably connected to the partition plate 16 on one side of the filtering area 17. Two mounting slots 28 are formed on the side of the slide plate 27 close to the partition plate 16, and the two mounting slots 28 are distributed front and rear. Filter plates 29 are detachably connected to the two mounting slots 28. One of the mounting slots 28 corresponds to each heat conduction tube 22. The front end of the slide plate 27 passes through the connecting groove 24 and is located in the transition box 23 on the front side of the discharge box 2. At this time, the other mounting slot 28 on the slide plate 27 is located in the transition box 23. A closing member for closing one of the connecting grooves 24 is provided on the slide plate 27. A pushing member for pushing the slide plate 27 to horizontally move on the partition plate 16 is provided on the discharge box 2. Air guiding members for blowing the waste gas in the transition box 23 back to the filtering area 17 are provided on both the two transition boxes 23.

[0045] Figure 4 and Figure 6 and Figure 7 , when the waste gas enters the filtering area 17 through the heat conduction tubes 22, the particulate matter in the waste gas can be filtered by the filter plate 29 in the mounting slot 28 corresponding to the heat conduction tubes 22. When the filter plate 29 corresponding to the heat conduction tubes 22 needs to be replaced, only need to push the slide plate 27 to horizontally move backward on the partition plate 16 through the pushing member until the other filter plate 29 corresponds to the heat conduction tubes 22. At this time, the filter plate 29 to be replaced will enter the transition box 23 on the rear side of the discharge box 2 following the slide plate 27. At this time, the closing member will close the connecting groove 24 on the rear side of the discharge box 2. Then, the waste gas in the transition box 23 on the rear side of the discharge box 2 is blown back to the filtering area 17 through the air guiding member. Then, the cover 26 is removed and the filter plate 29 to be replaced is removed from the access slot 25 for replacement. The injection of the waste gas does not need to be stopped throughout the process. By blowing the waste gas in the transition box 23 back to the filtering area 17 before removing the cover 26, the situation that the waste gas runs out from the access slot 25 on the transition box 23 when the cover 26 is removed can be reduced;

[0046] One of the filter plates 29 is located in the transition box 23 on the front side of the discharge box 2. When the other filter plate 29 corresponds to the heat conduction tubes 22 (such as Figure 4 ), the closing member closes the connecting groove 24 on the front side of the discharge box 2. When one of the filter plates 29 corresponds to the heat conduction tubes 22 through the movement of the slide plate 27 and the other filter plate 29 is located in the transition box 23 on the rear side of the discharge box 2, the closing member closes the connecting groove 24 on the rear side of the discharge box 2. It is simple and convenient to use.

[0047] such as Figure 4 andFigure 6 and Figure 7 The closure member includes a U-shaped closure plate 30 provided on the slide plate 27 and sealing layers 31 provided on the front and rear sides of the closure plate 30. The slide plate 27 is located inside the closure plate 30 and is fixedly connected to the closure plate 30. The sealing layer 31 on the front side of the closure plate 30 abuts against the inner wall of the discharge tank 2. First sealing gaskets 32 are provided on the side walls of both communication grooves 24 close to the partition 16. The side of the slide plate 27 close to the partition 16 contacts the first sealing gasket 32. The pusher includes a push plate 33 provided on the closure plate 30. An electric cylinder 34 is provided in the discharge tank 2 in one of the transition boxes 23, and one end of the piston rod of the electric cylinder 34 passes through the wall of the discharge tank 2 and is fixedly connected to the push plate 33.

[0048] As Figure 4 and Figure 6 and Figure 7 When it is necessary to push the slide plate 27 to move horizontally on the partition 16, only need to turn on the electric cylinder 34. At this time, the piston rod of the electric cylinder 34 will push the push plate 33 to drive the closure plate 30 to move horizontally. At this time, the closure plate 30 will drive the slide plate 27 to move horizontally back and forth on the partition 16. When one of the filter plates 29 is located in the transition box 23 on the front side of the discharge tank 2 and the other filter plate 29 corresponds to the heat conduction tube 22, the sealing layer 31 on the front side of the closure plate 30 will abut against the inner wall of the discharge tank 2. At this time, through the closure plate 30 and the first sealing gasket 32 on the communication groove 24 on the front side of the discharge tank 2 by the sealing layer 31 on the front side of the closure plate 30, the communication groove 24 on the front side of the discharge tank 2 can be closed;

[0049] When the movement of the slide plate 27 makes one of the filter plates 29 correspond to the heat conduction tube 22 and the other filter plate 29 is located in the transition box 23 on the rear side of the discharge tank 2, the sealing layer 31 on the rear side of the closure plate 30 will abut against the inner wall of the discharge tank 2. At this time, through the closure plate 30 and the first sealing gasket 32 on the communication groove 24 on the rear side of the discharge tank 2 by the sealing layer 31 on the rear side of the closure plate 30, the communication groove 24 on the rear side of the discharge tank 2 can be closed, which is simple and convenient to use.

[0050] As Figure 1 and Figure 4 and Figure 5 and Figure 8, the air guiding member includes a return pipe 35 provided on the side of the transition box 23 away from the picking and placing groove 25, and one end of the return pipe 35 away from the transition box 23 communicates with the filtering area 17 and extends into the filtering area 17. A plugging member for automatically closing the pipe orifice of the return pipe 35 is provided at the pipe orifice of the return pipe 35 extending into the filtering area 17. Connection pipes 36 are provided at the tops of both transition boxes 23, and one end of the connection pipe 36 away from the transition box 23 passes through the box wall of the discharge box 2 and is connected to the air guiding pipe 20. One end of the connection pipe 36 connected to the air guiding pipe 20 is above the water surface in the water filling area 18. An electromagnetic valve 37 is provided on the connection pipe 36. The plugging member includes a collar 38 and a plurality of connecting columns 39 provided on one side of the collar 38, and the connecting columns 39 are evenly distributed along the circumferential direction of the collar 38. One ends of the connecting columns 39 away from the collar 38 are connected by a closing disc 40, and the closing disc 40 is coaxial with the collar 38. A second sealing gasket 41 is provided on the side of the closing disc 40 close to the collar 38. The collar 38 is sleeved on the return pipe 35, and the second sealing gasket 41 on the closing disc 40 abuts against the pipe orifice of the return pipe 35 to close the pipe orifice of the return pipe 35. A tension spring 42 is provided on the side of the collar 38 away from the closing disc 40, and one end of the tension spring 42 away from the collar 38 is connected to the discharge box 2.

[0051] As Figure 1 and Figure 4 and Figure 5 and Figure 8 , when the closing member closes the communication groove 24 and then it is necessary to blow the waste gas in the transition box 23 back to the filtering area 17, only need to open the electromagnetic valve 37 on the connection pipe 36. At this time, the processed gas in the air guiding pipe 20 will enter the transition box 23 from the connection pipe 36, and blow the unprocessed waste gas in the transition box 23 into the filtering area 17 through the return pipe 35, completing the replacement of the waste gas in the transition box 23;

[0052] When the processed gas in the air guiding pipe 20 blows into the transition box 23 from the connection pipe 36, the air pressure in the transition box 23 will increase, pushing the closing disc 40 and the second sealing gasket 41 away from the pipe orifice of the return pipe 35. At this time, the tension spring 42 is stretched, and the unprocessed waste gas in the transition box 23 will be blown back to the filtering area 17 through the return pipe 35. After the waste gas replacement in the transition box 23 is completed, the electromagnetic valve 37 is closed. At this time, the stretched tension spring 42 will retract, driving the collar 38 to move. At this time, the collar 38 will drive the closing disc 40 to approach the pipe orifice of the return pipe 35 through the connecting columns 39 until the second sealing gasket 41 on the closing disc 40 abuts against the pipe orifice of the return pipe 35. At this time, the pipe orifice of the return pipe 35 can be automatically closed, which is simple and convenient to use.

[0053] As Figure 3, a number of heat sinks 43 are provided on the outer wall of the central pipe 10, and each heat sink 43 is located within the sleeve 9. The purpose of this arrangement is to facilitate the central pipe 10 in dissipating the heat carried by the processed gas into the exhaust gas in the sleeve 9 through the heat sinks 43, which is simple and convenient to use.

[0054] As Figure 2 , each heat conduction pipe 22 is inclined, and the lowest end of the heat conduction pipe 22 is close to the intake area 19. The purpose of this arrangement is that by inclining the heat conduction pipe 22, the residence time of the exhaust gas in the heat conduction pipe 22 can be increased, thus facilitating the heat conduction pipe 22 in dissipating the heat in the water into the exhaust gas.

[0055] As Figure 1 and Figure 3 , heat insulation layers 44 are provided on the outer wall of the sleeve 9 and the top end of the outer wall of the combustion chamber 1. A drain pipe 45 with a valve is provided on the discharge box 2, and the drain pipe 45 communicates with the water filling area 18. An inspection opening 46 is provided on the front side of the combustion chamber 1, and a box plate 47 for closing the inspection opening 46 is detachably connected to the combustion chamber 1. The purpose of this arrangement is that through the heat insulation layer 44, the heat loss and waste in the combustion chamber 1 can be reduced, thereby reducing energy waste. The inspection opening 46 corresponds to the opening of the baffle 8, and through the inspection opening 46, it is convenient to maintain and repair the electric heating grid 3 in the combustion chamber 1.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A catalytic combustion RCO waste gas treatment device, characterized in that It includes a combustion chamber (1) and an emission chamber (2). The combustion chamber (1) and the emission chamber (2) are connected through a preheating mechanism. An electric heating grid (3) and a placement grid (4) are arranged between the opposite sides in the combustion chamber (1). The placement grid (4) is located above the electric heating grid (3), and a catalyst (5) is arranged on the placement grid (4). An exhaust pipe (6) and an intake pipe (7) are arranged at the top of the emission chamber (2). A waste heat recovery mechanism for transferring the heat in the treated gas to the untreated waste gas is arranged in the emission chamber (2). The exhaust pipe (6), the intake pipe (7), and the preheating mechanism are all connected to the waste heat recovery mechanism; The preheating mechanism includes a U-shaped baffle (8) arranged in the combustion chamber (1), and the wall of the baffle (8) is hollow. A sleeve (9) is arranged above one side of the baffle (8) close to the emission chamber (2), and one end of the sleeve (9) away from the baffle (8) passes through the combustion chamber (1) and is connected to the emission chamber (2). The sleeve (9) is connected to the hollow of the wall of the baffle (8). A central pipe (10) is arranged between the combustion chamber (1) and the emission chamber (2), and one end of the central pipe (10) close to the combustion chamber (1) passes through the baffle (8) and is located inside the baffle (8). The electric heating grid (3) and the placement grid (4) are both arranged between the opposite sides of the baffle (8) and are both located below the sleeve (9). A mounting plate (12) is horizontally arranged between the opposite sides of the baffle (8), and the mounting plate (12) is located below the electric heating grid (3). An opening slot (13) is formed in the mounting plate (12). A fan (14) is arranged at one end of the mounting plate (12) close to the opening slot (13). An air inlet (15) connected to the hollow of the wall of the baffle (8) is arranged on one side of the baffle (8) away from the sleeve (9), and the air inlet (15) is located below the mounting plate (12). The central pipe (10) and the sleeve (9) are both connected to the waste heat recovery mechanism in the emission chamber (2); The waste heat recovery mechanism includes two partitions (16) vertically arranged in the discharge box (2), and the two partitions (16) divide the inside of the discharge box (2) into a filtering area (17), a water filling area (18), and an air inlet area (19) from left to right in sequence. The intake pipe (7) communicates with the air inlet area (19), the exhaust pipe (6) communicates with the water filling area (18), and an inverted L-shaped air guide pipe (20) communicating with the central pipe (10) is arranged in the discharge box (2), and the end of the air guide pipe (20) far from the central pipe (10) is vertically downward in the water in the water filling area (18). An air extraction pump (21) located in the water filling area (18) is arranged on the air guide pipe (20), and the air extraction pump (21) is above the water surface in the water filling area (18). The filtering area (17) and the air inlet area (19) are communicated through a plurality of heat conduction pipes (22), and each heat conduction pipe (22) is arranged between the two partitions (16). At this time, each heat conduction pipe (22) is located in the water in the water filling area (18). A filtering member for filtering the waste gas entering the filtering area (17) through the heat conduction pipes (22) is arranged on the discharge box (2), and the sleeve (9) communicates with the filtering area (17); The filtering member includes transition boxes (23) arranged on the front and rear sides of the discharge box (2). Communication grooves (24) communicating with the transition boxes (23) are arranged on both the front and rear sides of the discharge box (2), and the communication grooves (24) communicate with the filtering area (17). A placing groove (25) is opened on one side of each of the two transition boxes (23). Covers (26) for closing the placing grooves (25) are detachably connected to the two transition boxes (23). A sliding plate (27) is horizontally slidably connected to the partition (16) on one side of the filtering area (17). Two mounting grooves (28) are opened on the side of the sliding plate (27) close to the partition (16), and the two mounting grooves (28) are distributed front and rear. Filtering plates (29) are detachably connected to the two mounting grooves (28). One of the mounting grooves (28) corresponds to each heat conduction pipe (22). The front end of the sliding plate (27) passes through the communication groove (24) and is located in the transition box (23) on the front side of the discharge box (2). At this time, the other mounting groove (28) on the sliding plate (27) is located in the transition box (23). A closing member for closing one of the communication grooves (24) on the discharge box (2) is arranged on the sliding plate (27). A pushing member for pushing the sliding plate (27) to horizontally move on the partition (16) is arranged on the discharge box (2). Air guiding members for blowing the waste gas in the transition boxes (23) back to the filtering area (17) are arranged on both the two transition boxes (23).

2. The catalytic combustion RCO waste gas treatment equipment according to claim 1, characterized in that, The closure member includes a U-shaped closure plate (30) provided on the slide plate (27) and sealing layers (31) provided on the front and rear sides of the closure plate (30). The slide plate (27) is located inside the closure plate (30) and is fixedly connected to the closure plate (30). The sealing layer (31) on the front side of the closure plate (30) abuts against the inner wall of the discharge box (2). First sealing gaskets (32) are provided on the side walls of both of the two communication grooves (24) close to the partition plate (16). The side of the slide plate (27) close to the partition plate (16) contacts the first sealing gasket (32). The pushing member includes a push plate (33) provided on the closure plate (30). An electric cylinder (34) is provided in the discharge box (2) and is located in one of the transition boxes (23). One end of the piston rod of the electric cylinder (34) passes through the box wall of the discharge box (2) and is fixedly connected to the push plate (33).

3. The catalytic combustion RCO waste gas treatment equipment according to claim 1, characterized in that, The air guiding member includes a return pipe (35) provided on the side of the transition box (23) away from the picking and placing groove (25). One end of the return pipe (35) away from the transition box (23) communicates with the filtering area (17) and extends into the filtering area (17). A blocking member for automatically closing the pipe orifice of the return pipe (35) is provided at the pipe orifice of the return pipe (35) extending into the filtering area (17). Connecting pipes (36) are provided at the tops of both of the two transition boxes (23). One end of each connecting pipe (36) away from the transition box (23) passes through the box wall of the discharge box (2) and communicates with the air guiding pipe (20). The end of the connecting pipe (36) connected to the air guiding pipe (20) is above the water surface in the water filling area (18). An electromagnetic valve (37) is provided on the connecting pipe (36).

4. A catalytic combustion RCO waste gas treatment device according to claim 3, characterized in that, The blocking member includes a collar (38) and a plurality of connecting columns (39) provided on one side of the collar (38). The connecting columns (39) are evenly distributed along the circumferential direction of the collar (38). One ends of the connecting columns (39) away from the collar (38) are connected by a closing disc (40), and the closing disc (40) is coaxial with the collar (38). A second sealing gasket (41) is provided on the side of the closing disc (40) close to the collar (38). The collar (38) is sleeved on the return pipe (35). The second sealing gasket (41) on the closing disc (40) abuts against the pipe orifice of the return pipe (35) to close the pipe orifice of the return pipe (35). A tension spring (42) is provided on the side of the collar (38) away from the closing disc (40). One end of the tension spring (42) away from the collar (38) is connected to the discharge box (2).

5. A catalytic combustion RCO waste gas treatment device according to claim 1, characterized in that, A plurality of heat dissipation fins (43) are provided on the outer wall of the central pipe (10), and all of the heat dissipation fins (43) are located inside the sleeve (9).

6. A catalytic combustion RCO waste gas treatment device according to claim 1, characterized in that, Each of the heat conduction pipes (22) is inclined, and the lowest end of the heat conduction pipe (22) is close to the air inlet area (19).

7. A catalytic combustion RCO waste gas treatment device according to claim 1, characterized in that, Heat insulation layers (44) are provided on the outer wall of the sleeve (9) and at the top of the outer wall of the combustion chamber (1). A drain pipe (45) with a valve is provided on the discharge box (2), and the drain pipe (45) communicates with the water filling area (18). An inspection opening (46) is provided on the front side of the combustion chamber (1), and a box plate (47) for closing the inspection opening (46) is detachably connected to the combustion chamber (1).

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