CN220119398U - An RCO catalytic combustion device - Google Patents

Abstract

The utility model discloses an RCO catalytic combustion device, which belongs to the technical field of organic waste gas treatment and comprises a spray tower and a dry filter, wherein two groups of self-rotating spray mechanisms which can uniformly spray water mist and play a role in turbulent flow are arranged on the spray tower in the vertical direction; the inside of the spray tower is provided with a self-cleaning mechanism for cleaning dirt on the inner wall of the spray tower in the vertical direction; the left end of the dry filter is provided with a filter spraying cleaning mechanism which does not need to be disassembled for cleaning and can automatically clean a filter screen. Through the mode, the self-rotating spraying mechanism can enable the water washing liquid to be uniformly sprayed in the spraying tower, and the water washing liquid can be fully contacted with the waste gas to wash the waste gas; the inner wall of the spray chamber can be automatically cleaned through the self-cleaning mechanism, and extra labor is not required to be consumed; through the filter cleaning mechanism that spouts, need not to dismantle the clearance to the filter screen in the dry filter again, made things convenient for the clearance to the filter screen greatly.

Description

An RCO catalytic combustion device

Technical field

The utility model relates to the technical field of organic waste gas treatment, and specifically relates to an RCO catalytic combustion device.

Background technique

The RCO catalytic combustion device is a device used to treat organic waste gases. It is mainly used to treat high-concentration, high-temperature, difficult-to-decompose organic waste gases, such as volatile organic compounds (VOCs), benzene, formaldehyde, styrene, etc. The RCO catalytic combustion device has the advantages of high efficiency, stability, reliability, and energy saving, and is widely used in organic waste gas treatment in chemical, printing, painting, electronics and other industries.

For example, the patent with publication number CN214019783U discloses a new type of RCO activated carbon adsorption, concentration and catalytic combustion equipment. However, the first layer of filtration in the dry filter box of this device is set as a pre-positioned metal filter. Large-sized pollutant particles are initially filtered, so they are easy to accumulate dust and reduce the filtration effect. The common cleaning method is to disassemble and clean, which is inconvenient; the spray device of the spray tower cannot spray water evenly, which reduces the dust reduction effect of the spray tower. ; The spray tower is easy to get dirty, and the device lacks a device for automatically cleaning the inner wall of the spray tower.

Based on this, the utility model designs an RCO catalytic combustion device to solve the above problems.

Utility model content

In view of the above-mentioned shortcomings of the existing technology, the present utility model provides an RCO catalytic combustion device.

In order to achieve the above objectives, the present utility model is achieved through the following technical solutions:

An RCO catalytic combustion device, including a spray tower and a dry filter:

A dry filter is fixedly installed on the ground on the right side of the spray tower, an activated carbon adsorption device is fixed on the ground behind the dry filter, and a combustion chamber and an activated carbon adsorption device are fixed on the ground to the left of the activated carbon adsorption device. An exhaust chimney is fixedly installed on the upper end;

An air inlet channel is fixedly installed at the left end of the spray tower, and a water outlet channel is fixedly installed at the rear end of the bottom of the spray tower;

The spray tower is equipped with two sets of self-rotating spray mechanisms in the vertical direction that can evenly spray water mist and play a role in disturbing the flow;

A self-cleaning mechanism is installed in the vertical direction inside the spray tower for automatically cleaning the dirt on the inner wall of the spray tower, and a set of self-cleaning mechanisms is provided below each group of self-rotating spray mechanisms;

The left end of the dry filter is equipped with a filter spray cleaning mechanism that can automatically clean the filter screen without disassembly and cleaning.

Furthermore, the self-rotating spray mechanism includes a self-rotating sprinkler main body and a spray water inlet assembly. The spray water inlet assembly is fixedly connected to the side wall of the spray tower. The bottom end of the spray water inlet assembly is evenly and fixedly installed. Multiple self-rotating nozzle bodies.

Furthermore, the spray water inlet assembly includes an annular water inlet channel and a spray square pipe. The annular water inlet channel is fixedly installed on the outer wall of the spray tower, and the spray square pipe is fixedly installed on the inner wall of the spray tower. Connected to the annular water inlet channel.

Furthermore, the main body of the self-rotating nozzle includes a nozzle base, a spray rod, a rotating spray cap and a water outlet nozzle. Each water outlet through hole at the bottom end of the spray square tube is fixedly installed with a nozzle base, and the upper end of the spray rod is fixedly connected to the nozzle base. And a rotating spray cap is rotatably installed at the lower end. A plurality of water outlet nozzles are evenly fixed on the side wall of the rotating spray cap. The nozzles of the water outlet nozzles are offset from the axis of the water outlet nozzle shell.

Furthermore, the self-cleaning mechanism includes a scraper, a self-cleaning screw, a self-cleaning motor, a fixed arm and a fixed rotating shaft. The self-cleaning motor is fixedly connected to the bottom end of the spray tower, and the self-cleaning screw is installed vertically on the spray tower. Inside, the bottom end of the self-cleaning screw is rotationally connected to the bottom of the spray tower and fixedly connected to the output end of the self-cleaning motor. The upper end of the self-cleaning screw is fixedly connected to the fixed rotating shaft, and one end of the fixed arm is fixed to the inner wall of the spray tower. The other end is fixedly connected to the fixed rotating shaft. Multiple fixed arms are evenly arranged around the fixed rotating shaft. The scraper is fitted and slidably connected to the inner wall of the spray tower, and the axis of the scraper is threadedly connected to the self-cleaning screw.

Furthermore, the dry filter includes a pre-metal filter, a graphene filter module and an activated carbon filter. The interior of the dry filter is fixedly installed with a pre-metal filter, a graphene filter and a graphene filter along the gas inlet and outlet direction. Module and activated carbon filter.

Furthermore, the filter spray cleaning mechanism includes a spray sweep main body and a spray sweep drive assembly, and the spray sweep main body and spray sweep drive assembly are installed on the dry filter.

Furthermore, the main body of the spray sweep includes a spray sweep cleaning cover, an air inlet hose, an air outlet hose and a blower. The right side of the spray sweep cleaning cover is fitted and slidably connected to the front metal filter. A plurality of air inlet hoses are evenly installed on the back in the vertical direction. The blower is fixedly installed on the ground behind the dry filter. The air inlet hose runs through the back of the dry filter and is connected to the air outlet pipe of the blower. The air outlet is soft One end of the pipe is fixedly connected to the lower end of the left side of the spray cleaning cover, and the other end of the air outlet hose penetrates the left side of the dry filter and is connected to the outside.

Furthermore, the back side of the spray cleaning cover is set to guide the direction of the gas ejected from the air inlet hose, and is a slope that is conducive to the separation of attachments on the front metal filter. The slope is set to extend toward the back of the dry filter.

Furthermore, the spray sweep drive assembly includes a spray sweep screw, a spray sweep motor and a cleaning cover limit plate. The spray sweep motor is fixedly installed on the back outer wall of the dry filter. The two ends of the spray sweep screw are connected to the dry filter respectively. The front and rear walls of the filter are rotationally connected, the rear end of the spray sweep screw is fixedly connected to the output end of the spray sweep motor, and the spray sweep screw is threadedly connected to the spray sweep cleaning cover. The cleaning cover limit plates are fixedly installed on the upper and lower sides of the dry filter respectively. The inner wall is fitted and slidably connected with the spray cleaning cover.

beneficial effects

Through the self-rotating spray mechanism, the water washing liquid can be evenly sprayed inside the spray tower, and the water washing liquid can fully contact with the exhaust gas to wash the exhaust gas; through the self-cleaning mechanism, the inner wall of the spray chamber can be automatically cleaned Cleaning does not require extra manpower; through the filter spray cleaning mechanism, there is no need to disassemble and clean the filter screen in the dry filter, which greatly facilitates the cleaning of the filter screen.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to describe the embodiments or the prior art will be briefly introduced below. 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 exerting creative efforts.

Figure 1 is a three-dimensional view of the main structure of an RCO catalytic combustion device of the present invention;

Figure 2 is a front view of the structure of an RCO catalytic combustion device of the present invention;

Figure 3 is a top view of the structure of an RCO catalytic combustion device of the present invention;

Figure 4 is a cross-sectional view along the A-A direction and the B-B direction of Figure 3;

Figure 5 is a second cross-sectional view along the A-A direction and B-B direction of Figure 3;

Figure 6 is a cross-sectional view along the C-C direction of Figure 3;

Figure 7 is a second cross-sectional view along the C-C direction of Figure 3;

Figure 8 is an enlarged view of D in Figure 7 .

The labels in the figure represent respectively:

1. Spray tower; 11. Self-cleaning mechanism; 111. Scraper; 112. Self-cleaning screw; 113. Self-cleaning motor; 114. Fixed arm; 115. Fixed rotating shaft; 12. Self-rotating spray mechanism; 121. Self-cleaning Rotating nozzle main body; 1211, nozzle base; 1212, spray rod; 1213, rotating spray cap; 1214, water outlet nozzle; 122, spray water inlet component; 1221, annular water inlet channel; 1222, spray square pipe; 2. Dry type filter; 21. Pre-metal filter; 22. Graphene filter module; 23. Activated carbon filter; 3. Filter spray cleaning mechanism; 31. Spray cleaning main body; 311. Spray cleaning cover; 312. Air inlet hose; 313. Air outlet hose; 314. Blower; 32. Spray sweep drive assembly; 321. Spray sweep screw; 322. Spray sweep motor; 323. Cleaning cover limit plate; 4. Activated carbon adsorption device; 5. Combustion chamber; 6. Exhaust chimney; 7. First communication pipe; 8. Second communication pipe; 9. Third communication pipe; 10. Fourth communication pipe; 011. Air inlet channel; 012. Water outlet channel.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

The utility model will be further described below in conjunction with the examples.

Example 1

Please refer to Figures 1, 3, 4 and 6 of the description, an RCO catalytic combustion device includes a spray tower 1 and a dry filter 2,

A dry filter 2 is fixedly installed on the ground to the right of the spray tower 1, an activated carbon adsorption device 4 is fixedly installed on the ground behind the dry filter 2, and a combustion chamber is fixedly installed on the ground to the left of the activated carbon adsorption device 4. Chamber 5, the upper end of the activated carbon adsorption device 4 is fixedly installed with an exhaust chimney 6, the upper end of the spray tower 1 is fixedly connected to the left side of the dry filter 2 with a first communication pipe 7, and the right end of the back of the dry filter 2 is connected to The activated carbon adsorption device 4 is fixedly connected with a second communication pipe 8, and the third communication pipe 9 and the fourth communication pipe 10 are fixedly connected between the activated carbon adsorption device 4 and the combustion chamber 5;

The left end of the spray tower 1 is fixedly installed with an air inlet channel 011, and the rear end of the bottom of the spray tower 1 is fixedly installed with a water outlet channel 012;

The spray tower 1 is equipped with two sets of self-rotating spray mechanisms 12 in the vertical direction that can evenly spray water mist and play a role in disturbing the flow;

A self-cleaning mechanism 11 for automatically cleaning the dirt on the inner wall of the spray tower 1 is installed in the vertical direction inside the spray tower 1, and a set of self-cleaning mechanisms 11 is provided below each group of self-rotating spray mechanisms 12;

The left end of the dry filter 2 is equipped with a filter spray cleaning mechanism 3 that does not require disassembly and cleaning and can automatically clean the filter screen;

When the RCO catalytic combustion device is operating normally, organic waste gas enters the interior of the spray tower 1 through the air inlet channel 011, and the water washing liquid is evenly sprayed in the spray tower 1 through the self-rotating spray mechanism 12. The water washing liquid is in close contact with the waste gas and The exhaust gas is washed, and at the same time, the self-cleaning mechanism 11 cleans the remaining dirt on the inner wall of the spray tower 1. The washed waste liquid is discharged from the spray tower 1 through the water outlet channel 012, and then the exhaust gas enters the dry filter through the first connecting pipe 7 Filter 2 is used for filtration. When a large amount of filtered matter is attached to the filter screen due to long-term use, the valve of the first communication pipe 7 is closed, and the filter spray cleaning mechanism 3 is started to spray and sweep the filter screen, and the attachments separated from the filter screen are removed. The filter spray cleaning mechanism 3 discharges the dry filter 2, and then the exhaust gas enters the activated carbon adsorption device 4 through the second communication pipe 8 and is adsorbed by activated carbon. The exhaust gas that reaches the standard is discharged through the exhaust chimney 6. When the activated carbon is saturated, the combustion chamber The hot air in 5 enters the activated carbon adsorption device 4 along with the third communication pipe 9 to desorb the activated carbon. High-concentration exhaust gas enters the combustion chamber 5 through the fourth communication pipe 10 for catalytic combustion. The exhaust gas that reaches the standard passes through the third connection The pipe 9 enters the activated carbon adsorption device 4 and is finally discharged through the exhaust chimney 6;

Through the self-rotating spray mechanism 12, the water washing liquid can be evenly sprayed inside the spray tower 1, and the water washing liquid can fully contact with the exhaust gas to wash the exhaust gas; through the self-cleaning mechanism 11, the spray chamber can be automatically cleaned The inner wall of the dry filter 1 can be cleaned without spending extra manpower; through the filter spray cleaning mechanism 3, there is no need to disassemble and clean the filter screen in the dry filter 2, which greatly facilitates the cleaning of the filter screen.

Example 2

In some embodiments, as shown in Figures 1-3 and 6-8, as a preferred embodiment of the present invention, the self-rotating sprinkler mechanism 12 includes a self-rotating sprinkler head body 121 and a sprinkler water inlet assembly. 122. The spray water inlet assembly 122 is fixedly connected to the side wall of the spray tower 1. The bottom end of the spray water inlet assembly 122 is evenly fixed with multiple self-rotating sprinkler head bodies 121;

The spray water inlet assembly 122 includes an annular water inlet channel 1221 and a spray square pipe 1222. The annular water inlet channel 1221 is fixedly installed on the outer wall of the spray tower 1, and the spray square pipe 1222 is fixedly installed on the outer wall of the spray tower 1. on the inner wall and connected with the annular water inlet channel 1221;

The self-rotating nozzle body 121 includes a nozzle base 1211, a spray rod 1212, a rotating spray cap 1213 and a water outlet nozzle 1214. Each water outlet hole at the bottom end of the spray square tube 1222 is fixedly installed with a nozzle base 1211. The upper end of the spray rod 1212 is connected to the nozzle base 1211. The nozzle base 1211 is fixedly connected and has a rotating spray cap 1213 installed at the lower end. Multiple water nozzles 1214 are evenly fixed on the side wall of the rotating nozzle cap 1213. The nozzle of the water nozzle 1214 is offset from the axis of the outer shell of the water nozzle 1214;

When the self-rotating spray mechanism 12 is working normally, when the exhaust gas enters the spray tower 1, the water washing liquid passes through the annular water inlet channel 1221, the spray square tube 1222 and the spray rod 1212 to reach the rotating spray cap 1213, and finally passes through the water outlet nozzle 1214. Entering the spray tower 1, because the nozzle of the water outlet nozzle 1214 deviates from the axis of the water outlet nozzle shell 1214, the tangential component of the reverse thrust generated by the water flow ejected from the water outlet nozzle 1214 generates a rotational moment, thereby driving the rotating spray cap 1213 and the water outlet. The nozzle 1214 rotates around the spray rod 1212;

Through the self-rotating spray mechanism 12, the water washing liquid is evenly sprayed into the interior of the spray tower 1, which not only makes the water washing liquid fully contact with the exhaust gas, but also plays a disturbing effect on the exhaust gas, so that the exhaust gas can flow in the spray tower 1 stays longer inside, thus greatly improving the washing effect of the water washing liquid on the exhaust gas;

The self-cleaning mechanism 11 includes a scraper 111, a self-cleaning screw 112, a self-cleaning motor 113, a fixed arm 114 and a fixed rotating shaft 115. The self-cleaning motor 113 is fixedly connected to the bottom of the spray tower 1, and the self-cleaning screw 112 is vertical. Installed inside the spray tower 1, the bottom end of the self-cleaning screw 112 is rotationally connected to the bottom of the spray tower 1 and fixedly connected to the output end of the self-cleaning motor 113. The upper end of the self-cleaning screw 112 is fixedly connected to the fixed rotating shaft 115. One end of the fixed arm 114 is fixedly connected to the inner wall of the spray tower 1 and the other end is fixedly connected to the fixed rotating shaft 115. Multiple fixed arms 114 are evenly arranged around the fixed rotating shaft 115. The scraper 111 fits and slides with the inner wall of the spray tower 1. connected, and the axis of the scraper 111 is threadedly connected to the self-cleaning screw 112;

When the self-cleaning mechanism 11 is working normally, the self-cleaning motor 113 is started, and the self-cleaning motor 113 provides power for the rotation of the self-cleaning screw 112. Through the forward and reverse rotation of the output end of the self-cleaning motor 113, the scraper 111 rotates on the self-cleaning screw 112. The scraper 111 is driven to move in the vertical direction while the scraper 111 cleans the inner wall of the spray tower 1. Through the self-cleaning mechanism 11, it is greatly facilitated to clean the dirt on the inner wall of the spray tower 1;

Example 3

In some embodiments, as shown in Figures 1 and 3-5, as a preferred embodiment of the present invention, the dry filter 2 includes a pre-metal filter 21, a graphene filter module 22 and Activated carbon filter 23, a pre-metal filter 21, a graphene filter module 22 and an activated carbon filter 23 are fixedly installed inside the dry filter 2 along the gas inlet and outlet direction;

The filter spray cleaning mechanism 3 includes a spray sweep main body 31 and a spray sweep drive assembly 32. The spray sweep main body 31 and the spray sweep drive assembly 32 are installed on the dry filter 2;

The spray cleaning body 31 includes a spray cleaning cover 311, an air inlet hose 312, an air outlet hose 313 and a blower 314. The right side of the spray cleaning cover 311 is fitted and slidably connected to the front metal filter 21. A plurality of air inlet hoses 312 are evenly installed on the back of the cleaning cover 311 in the vertical direction. The blower 314 is fixedly installed on the ground behind the dry filter 2. The air inlet hoses 312 penetrate the back of the dry filter 2. It is connected with the air outlet pipe of the blower 314. One end of the air outlet hose 313 is fixedly connected to the lower end of the left side of the spray cleaning cover 311. The other end of the air outlet hose 313 penetrates the left side of the dry filter 2 and communicates with the outside. The back side of the cleaning cover 311 is set to guide the direction of the gas ejected from the air inlet hose 312, and is an inclined plane that is conducive to the separation of attachments on the front metal filter 21, and the inclined plane is set to extend toward the back side of the dry filter 2;

The spray sweep drive assembly 32 includes a spray sweep screw 321, a spray sweep motor 322 and a cleaning cover limiting plate 323. The spray sweep motor 322 is fixedly installed on the back outer wall of the dry filter 2. The two ends of the spray sweep screw 321 are respectively Rotatingly connected to the front and rear walls of the dry filter 2, the rear end of the spray sweep screw 321 is fixedly connected to the output end of the spray sweep motor 322, and the spray sweep screw 321 is threadedly connected to the spray sweep cleaning cover 311, and the cleaning cover limit plates 323 are respectively Fixedly installed on the upper and lower inner walls of the dry filter 2 and slidably connected with the spray cleaning cover 311;

When the filter spray cleaning mechanism 3 is working normally, if there are too many attachments on the front metal filter 21 and the filtering effect of the dry filter 2 is reduced, the valve of the first communication pipe 7 is closed and the air outlet hose is opened. 313 valve, start the blower 314 and the spray motor 322, the blower 314 inputs the gas into the air intake hose 312, and then the gas cleans the attachments on the front metal filter 21 in the spray cleaning cover 311, and the spray cleaning cover The slope of 311 creates an angle between the nozzle of the air inlet hose 312 and the filter screen, making it easier for the spray gas to separate attachments. The separated attachments are discharged from the dry filter with the outlet hose 313 at the lower end of the spray cleaning cover 311. 2. At the same time, the spray sweep motor 322 provides power for the rotation of the spray sweep screw 321. The spray sweep cleaning cover 311 is driven by the spray sweep screw 321 to move in the front and back direction along the front metal filter 21, so that the front metal filter 21 All positions of the RCO catalytic combustion device have been cleaned. After completing the cleaning work, close the valve of the air outlet hose 313 and open the valve of the first communication pipe 7. The RCO catalytic combustion device can continue to work;

Through the filter spray cleaning mechanism 3, if you want to clean the front metal filter 21, you no longer need to disassemble and clean the front metal filter 21, which greatly facilitates the cleaning of filter attachments and reduces the need for the equipment to clean the filter. Network downtime.

The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still implement the foregoing implementations. The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims (10)

1. An RCO catalytic combustion device, including a spray tower (1) and a dry filter (2), which is characterized by: A dry filter (2) is fixedly installed on the ground to the right of the spray tower (1), and an activated carbon adsorption device (4) is fixedly installed on the ground behind the dry filter (2). The activated carbon adsorption device (4) ) has a combustion chamber (5) fixedly installed on the ground on the left side, and an exhaust chimney (6) fixedly installed at the upper end of the activated carbon adsorption device (4); An air inlet channel (011) is fixedly installed at the left end of the spray tower (1), and a water outlet channel (012) is fixedly installed at the rear end of the bottom of the spray tower (1); The spray tower (1) is equipped with two sets of self-rotating spray mechanisms (12) in the vertical direction that can evenly spray water mist and play a role in disturbing the flow; A self-cleaning mechanism (11) for automatically cleaning the inner wall of the spray tower (1) is installed in the vertical direction, and a self-cleaning mechanism (11) is installed below each group of self-rotating spray mechanisms (12). Establish a self-cleaning mechanism (11); The left end of the dry filter (2) is equipped with a filter spray cleaning mechanism (3) that can automatically clean the filter screen without disassembly and cleaning. 2. The RCO catalytic combustion device according to claim 1, characterized in that the self-rotating spray mechanism (12) includes a self-rotating spray head body (121) and a spray water inlet assembly (122), and the spray water inlet is The component (122) is fixedly connected to the side wall of the spray tower (1), and a plurality of self-rotating nozzle main bodies (121) are evenly and fixedly installed at the bottom end of the spray water inlet component (122). 3. The RCO catalytic combustion device according to claim 2, characterized in that the spray water inlet assembly (122) includes an annular water inlet channel (1221) and a spray square tube (1222), and the annular water inlet channel (1222) 1221) is fixedly installed on the outer wall of the spray tower (1), and the spray square pipe (1222) is fixedly installed on the inner wall of the spray tower (1) and connected with the annular water inlet channel (1221). 4. The RCO catalytic combustion device according to claim 3, characterized in that the self-rotating nozzle body (121) includes a nozzle base (1211), a spray rod (1212), a rotating nozzle cap (1213) and a water outlet nozzle (1213). 1214), each water outlet hole at the bottom of the spray square pipe (1222) is fixedly installed with a sprinkler head base (1211), the upper end of the spray rod (1212) is fixedly connected to the sprinkler head base (1211), and the lower end is rotationally installed with a rotating spray cap (1214). 1213), a plurality of water outlet nozzles (1214) are evenly fixed on the side wall of the rotating spray cap (1213), and the nozzles of the water outlet nozzle (1214) are offset from the axis of the water outlet nozzle (1214) shell. 5. The RCO catalytic combustion device according to claim 1, characterized in that the self-cleaning mechanism (11) includes a scraper (111), a self-cleaning screw (112), a self-cleaning motor (113), a fixed arm ( 114) and the fixed rotating shaft (115), the self-cleaning motor (113) is fixedly connected to the bottom end of the spray tower (1), the self-cleaning screw (112) is installed vertically inside the spray tower (1), and the self-cleaning screw The bottom end of (112) is rotatably connected to the bottom of the spray tower (1) and fixedly connected to the output end of the self-cleaning motor (113). The upper end of the self-cleaning screw (112) is fixedly connected to the fixed rotating shaft (115), and the fixed arm One end of (114) is fixedly connected to the inner wall of the spray tower (1) and the other end is fixedly connected to the fixed rotating shaft (115). The fixed arm (114) is evenly arranged with multiple scrapers (111) around the fixed rotating shaft (115). It is fitted and slidably connected to the inner wall of the spray tower (1), and the axis of the scraper (111) is threadedly connected to the self-cleaning screw (112). 6. The RCO catalytic combustion device according to claim 1, characterized in that the dry filter (2) includes a pre-metal filter (21), a graphene filter module (22) and an activated carbon filter (21). 23), a pre-metal filter (21), a graphene filter module (22) and an activated carbon filter (23) are fixedly installed inside the dry filter (2) along the gas inlet and outlet direction. 7. The RCO catalytic combustion device according to claim 1, characterized in that the filter spray cleaning mechanism (3) includes a spray sweep main body (31) and a spray sweep drive assembly (32), and the spray sweep main body (31) ) and the spray drive assembly (32) are installed on the dry filter (2). 8. The RCO catalytic combustion device according to claim 7, characterized in that the spray main body (31) includes a spray cleaning cover (311), an air inlet hose (312), an air outlet hose (313) and The blower (314), the right side of the spray cleaning cover (311) are fitted and slidably connected to the front metal filter (21), and a plurality of spray cleaning covers (311) are evenly fixed and installed on the back of the spray cleaning cover (311) in the vertical direction. The air inlet hose (312) and the blower (314) are fixedly installed on the ground behind the dry filter (2). The air inlet hose (312) runs through the back of the dry filter (2) and the blower (314). The air outlet pipe is connected, one end of the air outlet hose (313) is fixedly connected to the lower end of the left side of the spray cleaning cover (311), and the other end of the air outlet hose (313) runs through the left side of the dry filter (2) and external connectivity. 9. The RCO catalytic combustion device according to claim 8, characterized in that the back side of the spray cleaning cover (311) is set to guide the direction of the gas ejected from the intake hose (312), which is conducive to the pre-metal filtering. The inclined plane for separating attachments on the net (21) is arranged to extend toward the back of the dry filter (2). 10. The RCO catalytic combustion device according to claim 8 or 9, characterized in that the spray drive assembly (32) includes a spray screw (321), a spray motor (322) and a cleaning cover limit plate (321). 323), the spray and sweep motor (322) is fixedly installed on the back outer wall of the dry filter (2), and the two ends of the spray and sweep screw (321) are respectively connected to the front and rear walls of the dry filter (2), and the spray and sweep The rear end of the screw (321) is fixedly connected to the output end of the spray motor (322), and the spray screw (321) is threadedly connected to the spray cleaning cover (311). The cleaning cover limit plates (323) are respectively fixedly installed on the dryer. The upper and lower inner walls of the type filter (2) are fitted and slidably connected with the spray cleaning cover (311).