Dry desulfurization adsorption system in waste incineration flue gas furnace

Abstract

The invention provides a waste incineration flue gas in-furnace dry desulfurization adsorption system which comprises a desulfurization reaction furnace, a high-temperature flue gas inlet pipe, a lime powder bin, a feeding pipe, a mixed gas inlet pipe, an exhaust pipe, an air pipe and a Roots blower, and a heat preservation pipe and a transition pipe are arranged between the mixed gas inlet pipe and the Roots blower. Cleaning devices are arranged in the mixed air inlet pipe, the heat preservation pipe and the transition pipe, each cleaning device comprises a cleaning fan, a mounting barrel, a sealing cover, a driving air cylinder, a connecting rod set, a limiting frame, a cleaning frame, a plurality of inclined air holes and a jet air pipe matched with the inclined air holes, and a temperature control device is arranged on the heat preservation pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste incineration equipment, and particularly relates to a dry desulfurization adsorption system in a waste incineration flue gas furnace. BACKGROUND

[0002] Waste incineration needs to perform desulfurization treatment on flue gas, and the treatment process is generally 'dry method + bag dust collector + wet method + activated carbon adsorption tower'. In the dry desulfurization process, lime is delivered to a storage tank in the factory area by a lime delivery vehicle through a unloading pump, the injection flow is controlled by a lime unloading valve and a weighing system, and the air speed is controlled by a Roots blower frequency conversion, so that the lime powder is delivered to the furnace chamber and fully mixed with the flue gas to react and remove acid. The existing lime desulfurization system has a series of problems in actual operation, which affects the operation efficiency and desulfurization effect of the system. In terms of pipelines, due to unreasonable design, there are a large number of small curvature elbows and frequent diameter changes, which increases the flow resistance of the air flow and the lime powder material in the pipeline, and easily causes blockage. At the same time, the lime powder is easily accumulated in the pipeline during long-term delivery due to the influence of factors such as humidity and temperature, which further increases the risk of pipeline blockage and reduces the stability of the system operation. As the key power equipment in the system, the Roots blower has the problem that the air humidity entering the blower is high, which causes the lime to react with the humid air and produces coking phenomenon in the impeller and the casing of the blower. Not only does this affect the normal operation of the blower, but also reduces the service life of the blower. Moreover, the system lacks effective cooperative control, and the devices cannot realize efficient linkage, so they cannot be intelligently adjusted according to real-time working conditions, which leads to unstable desulfurization efficiency and makes it difficult to meet the increasingly strict environmental protection requirements, and improvement is urgently needed. SUMMARY

[0003] The present application provides a kind of garbage incineration flue gas furnace dry desulfurization adsorption system to solve the technical deficiency described above, including desulfurization reaction furnace, high-temperature flue gas inlet pipe, lime powder bin, feeding pipe, mixed inlet pipe, exhaust pipe, air duct and Roots blower, the high-temperature flue gas inlet pipe, mixed inlet pipe and exhaust pipe are all connected with desulfurization reaction furnace, the lime powder bin is connected with mixed inlet pipe by feeding pipe, the two ends of the Roots blower are connected with mixed inlet pipe and air duct respectively, the mixed inlet pipe and Roots blower are equipped with heat preservation pipe and transition pipe, the mixed inlet pipe, heat preservation pipe and transition pipe are equipped with cleaning device, the cleaning device includes cleaning fan, installation cylinder, sealing cover, drive cylinder, connecting rod group, limit frame, cleaning frame, several inclined air holes and several jet air pipes matched with several inclined air holes, the installation cylinder is arranged on transition pipe, the sealing cover is matched with installation cylinder and is detachably connected with installation cylinder, the drive cylinder is arranged on sealing cover and is located in installation cylinder, the limit frame is arranged in transition pipe and is located at the position below installation cylinder, the cleaning frame is arranged in mixed inlet pipe, the limit frame is opened with the through hole matched with connecting rod group, the position of the through hole is matched with the bottom wall of mixed inlet pipe, the connecting rod group passes through limit frame and two ends are movably connected with cleaning frame and piston rod of drive cylinder respectively, the connecting rod group includes short connecting rod and a pair of long connecting rods, the two ends of the short connecting rod are connected with a pair of long connecting rods and are rotationally matched, the cleaning frame includes main frame rod and several pairs of cleaning frame rods, the shape and size of the several pairs of cleaning frame rods are matched with mixed inlet pipe, the several pairs of cleaning frame rods are symmetrically arranged on both sides of main frame rod and the spacing is matched with the size of short connecting rod, the several inclined air holes are arranged on the top of mixed inlet pipe, the several jet air pipes are connected with several inclined air holes respectively, the several jet air pipes are connected with cleaning fan by connecting pipeline, the heat preservation pipe is equipped with temperature control device.

[0004] The technical scheme is adopted, the cleaning device including a cleaning fan, a mounting cylinder, a sealing cover, a driving cylinder, a connecting rod set, a limiting frame, a cleaning frame, a plurality of inclined air holes and a jet air pipe matched with the plurality of inclined air holes is arranged in the mixed inlet pipe, the heat preservation pipe and the transition pipe, when the reaction furnace is used for a period of time, the pipe wall of the mixed inlet pipe is cleaned by the cleaning device regularly, the lime powder is prevented from being accumulated in the pipeline for a long time due to the influence of humidity, temperature and other factors, the connecting rod set is moved by the driving cylinder, the long connecting rod connected with the driving cylinder piston rod moves up and down, the long connecting rod connected with the cleaning frame moves left and right through the transmission of the short connecting rod, and then the cleaning frame moves reciprocatingly, the pipe wall of the mixed inlet pipe is scraped and swept, the cleaning fan is started, the cleaning air is transported into the plurality of jet air pipes through the connecting pipeline, and then the agglomerated lime powder scraped by the cleaning frame is blown away from the mixed inlet pipe through the plurality of inclined air holes, the temperature control device is arranged on the heat preservation pipe, the air entering from the outside can be maintained at a stable temperature after passing through the heat preservation pipe, the possibility of the lime powder being accumulated and solidified in the mixed inlet pipe is further reduced, the frequency of pipeline blockage can be effectively reduced, the stable transportation of the desulfurizing agent is ensured, the reliability of the desulfurization system operation is improved, the downtime caused by pipeline blockage is reduced, and then the overall production efficiency of the waste power plant is improved.

[0005] Further provided in the application is that a large-curvature elbow is arranged at the bending position of the mixed inlet pipe.

[0006] The technical scheme is adopted, the cleaning device including a cleaning fan, a mounting cylinder, a sealing cover, a driving cylinder, a connecting rod set, a limiting frame, a cleaning frame, a plurality of inclined air holes and a jet air pipe matched with the plurality of inclined air holes is arranged in the mixed inlet pipe, the heat preservation pipe and the transition pipe, when the reaction furnace is used for a period of time, the pipe wall of the mixed inlet pipe is cleaned by the cleaning device regularly, the lime powder is prevented from being accumulated in the pipeline for a long time due to the influence of humidity, temperature and other factors, the connecting rod set is moved by the driving cylinder, the long connecting rod connected with the driving cylinder piston rod moves up and down, the long connecting rod connected with the cleaning frame moves left and right through the transmission of the short connecting rod, and then the cleaning frame moves reciprocatingly, the pipe wall of the mixed inlet pipe is scraped and swept, the cleaning fan is started, the cleaning air is transported into the plurality of jet air pipes through the connecting pipeline, and then the agglomerated lime powder scraped by the cleaning frame is blown away from the mixed inlet pipe through the plurality of inclined air holes, the temperature control device is arranged on the heat preservation pipe, the air entering from the outside can be maintained at a stable temperature after passing through the heat preservation pipe, the possibility of the lime powder being accumulated and solidified in the mixed inlet pipe is further reduced, the frequency of pipeline blockage can be effectively reduced, the stable transportation of the desulfurizing agent is ensured, the reliability of the desulfurization system operation is improved, the downtime caused by pipeline blockage is reduced, and then the overall production efficiency of the waste power plant is improved.

[0007] Further provided in the application is that the temperature control device includes a cladding pipe, a circulating pipe, a heating mechanism, heating oil and a circulating pump, the cladding pipe is sleeved on the heat preservation pipe, a heat preservation cavity is formed between the inner wall of the cladding pipe and the outer wall of the heat preservation pipe, the two ends of the circulating pipe are connected with the two ends of the cladding pipe and communicate with the heat preservation cavity, the heating mechanism and the circulating pump are connected with the circulating pipe, and the heating oil is arranged in the heat preservation cavity.

[0008] The temperature control device comprises a cladding pipe, a circulating pipe, a heating mechanism, heating oil and a circulating pump, the cladding pipe is sleeved on the heat preservation pipe, a heat preservation cavity is formed between the inner wall of the cladding pipe and the outer wall of the heat preservation pipe, the two ends of the circulating pipe are connected with the two ends of the cladding pipe and communicate with the heat preservation cavity, the heating mechanism and the circulating pump are connected with the circulating pipe, the heating oil is arranged in the heat preservation cavity, the air passing through the heat preservation pipe can be stably controlled in a certain temperature range by sleeving the cladding pipe on the outside of the heat preservation pipe, arranging the heat preservation oil in the cladding pipe, and circulating and controlling the heat preservation oil through the circulating pipe and the circulating pump, and the temperature is controlled through the heating mechanism, so that the possibility of the mixed lime powder being solidified in the mixing air inlet pipe due to the influence of the temperature can be reduced.

[0009] Further provided in the application is that the air inlet of the air duct is further connected with a dehumidification device, the dehumidification device comprises an air inlet pipe, a pair of dehumidification boxes, a pair of connecting branch pipes, a pair of air supply pipes and a plurality of electromagnetic valves, the pair of connecting branch pipes are connected with the air inlet pipe, the plurality of electromagnetic valves are arranged on the pair of connecting branch pipes at positions connected with the air inlet pipe and positions connected with the air supply pipes and the air duct, one end of the pair of connecting branch pipes is connected with the pair of dehumidification boxes, and the pair of air supply pipes are connected with the pair of dehumidification boxes and the air duct.

[0010] Further provided in the application is that the air inlet of the air duct is further connected with a dehumidification device, the dehumidification device comprises an air inlet pipe, a pair of dehumidification boxes, a pair of connecting branch pipes, a pair of air supply pipes and a plurality of electromagnetic valves, the pair of connecting branch pipes are connected with the air inlet pipe, the plurality of electromagnetic valves are arranged on the pair of connecting branch pipes at positions connected with the air inlet pipe and positions connected with the air supply pipes and the air duct, one end of the pair of connecting branch pipes is connected with the pair of dehumidification boxes, and the pair of air supply pipes are connected with the pair of dehumidification boxes and the air duct.

[0011] Further provided in the application is that the pair of dehumidification boxes are each provided with an operation opening and a sealing door plate is arranged on the operation opening.

[0012] By adopting the above technical solution, since each pair of dehumidifiers is provided with an operation port and a sealed door panel on the operation port, the sealed door panel can be opened to quickly replace and maintain the inside of the dehumidifier during maintenance.

[0013] A further feature of the present invention is that a monitoring and control device is provided between the high-temperature flue gas inlet pipe, the feeding pipe, the Roots blower, and the temperature control device. The monitoring and control device includes a flue gas branch pipe, a flue gas analyzer, a flow valve, and a PLC control unit. The flue gas branch pipe is located on the high-temperature flue gas inlet pipe, the flue gas analyzer is located on the flue gas branch pipe, the flow valve is located on the feeding pipe, and the PLC control unit is located on the Roots blower. The flue gas analyzer, the flow valve, the Roots blower, and the heating mechanism are all connected and coordinated for control via the PLC control unit.

[0014] By adopting the above technical solution, a monitoring and control device is also provided between the high-temperature flue gas inlet pipe, the feeding pipe, the Roots blower, and the temperature control device. The monitoring and control device includes a flue gas branch pipe, a flue gas analyzer, a flow valve, and a PLC control unit. The flue gas branch pipe is installed on the high-temperature flue gas inlet pipe, the flue gas analyzer is installed on the flue gas branch pipe, the flow valve is installed on the feeding pipe, and the PLC control unit is installed on the Roots blower. The flue gas analyzer, the flow valve, the Roots blower, and the heating mechanism are all connected and coordinated for control through the PLC control unit. The high-temperature flue gas is analyzed in real time by the flue gas analyzer, and the discharge speed of lime powder and the rotation speed of the Roots blower are adjusted according to the analysis results. This achieves real-time intelligent adjustment of the entire desulfurization system, improves desulfurization efficiency, reduces energy consumption, reduces the workload of workers, and thus improves the overall economic and environmental benefits. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the operation of a dry desulfurization adsorption system in a waste incineration flue gas furnace according to a specific embodiment of the present invention.

[0016] Appendix Figure 2 This is a partial structural cross-sectional view of a cleaning device in a dry desulfurization adsorption system within a waste incineration flue gas furnace, according to a specific embodiment of the present invention.

[0017] Appendix Figure 3 This is a partial structural schematic diagram of a connecting rod assembly in a dry desulfurization adsorption system for waste incineration flue gas, according to a specific embodiment of the present invention.

[0018] Appendix Figure 4 This is a schematic diagram of the temperature control device in a dry desulfurization adsorption system for waste incineration flue gas according to a specific embodiment of the present invention.

[0019] AppendixFigure 5 This is a schematic diagram of the dehumidification device in a dry desulfurization adsorption system for waste incineration flue gas according to a specific embodiment of the present invention.

[0020] 1-Desulfurization reactor, 2-High-temperature flue gas inlet pipe, 3-Lime powder silo, 4-Feeding pipe, 5-Mixing inlet pipe, 6-Exhaust pipe, 7-Air duct, 8-Roots blower, 9-Insulation pipe, 10-Transition pipe, 11-Cleaning device, 12-Cleaning blower, 13-Mounting cylinder, 14-Sealing cover, 15-Drive cylinder, 16-Connecting rod assembly, 17-Limiting frame, 18-Cleaning frame, 19-Inclined air hole, 20-Jet duct, 21-Pass-through port, 22-Short connecting rod, 23-Long connecting rod 24-Main frame pole, 25-Cleaning frame pole, 26-Temperature control device, 27-Large curvature elbow, 28-Covering pipe, 29-Circulation pipe, 30-Heating mechanism, 31-Heating oil, 32-Circulation pump, 33-Dehumidification device, 34-Inlet pipe, 35-Dehumidification box, 36-Connecting branch pipe, 37-Air supply pipe, 38-Solenoid valve, 39-Sealing door panel, 40-Monitoring and control device, 41-Flue gas branch pipe, 42-Flue gas analyzer, 43-Flow valve, 44-PLC control unit. Detailed Implementation

[0021] like Figures 1-5As shown, a dry desulfurization and adsorption system for waste incineration flue gas includes a desulfurization reactor 1, a high-temperature flue gas inlet pipe 2, a lime powder silo 3, a feed pipe 4, a mixing inlet pipe 5, an exhaust pipe 6, an air duct 7, and a Roots blower 8. The high-temperature flue gas inlet pipe, the mixing inlet pipe, and the exhaust pipe are all connected to the desulfurization reactor. The lime powder silo is connected to the mixing inlet pipe via the feed pipe. The two ends of the Roots blower are connected to the mixing inlet pipe and the air duct, respectively. The mixing inlet pipe is connected to the Roots blower... An insulation pipe 9 and a transition pipe 10 are provided between the mixing inlet pipe, the insulation pipe, and the transition pipe. A cleaning device 11 is provided inside the mixing inlet pipe, the insulation pipe, and the transition pipe. The cleaning device includes a cleaning fan 12, a mounting cylinder 13, a sealing cover 14, a drive cylinder 15, a connecting rod assembly 16, a limit frame 17, a cleaning frame 18, several inclined air holes 19, and jet air pipes 20 that match the several inclined air holes. The mounting cylinder is set on the transition pipe. The sealing cover matches the mounting cylinder and is detachably connected to the mounting cylinder. The drive cylinder is set on the sealing cover. The upper part is located inside the mounting cylinder. The limiting frame is located inside the transition tube below the mounting cylinder. The cleaning frame is located inside the mixing air intake pipe. The limiting frame has a through-hole 21 that matches the connecting rod assembly. The position of the through-hole matches the bottom wall of the mixing air intake pipe. The connecting rod assembly passes through the limiting frame and its two ends are movably connected to the cleaning frame and the piston rod of the drive cylinder, respectively. The connecting rod assembly includes a short connecting rod 22 and a pair of long connecting rods 23. The two ends of the short connecting rod are respectively connected to the pair of long connecting rods. The cleaning frame includes a main frame rod 24 and several pairs of cleaning frame rods 25, which are symmetrically arranged on both sides of the main frame rod and the spacing is matched with the size of the short connecting rod. Several inclined air holes are arranged at the top of the mixing air intake pipe. Several jet air pipes are respectively connected to several inclined air holes. Several jet air pipes are connected to the cleaning fan through connecting pipes. A temperature control device 26 is provided on the heat preservation pipe.

[0022] A cleaning device is installed inside the mixing inlet pipe, insulation pipe, and transition pipe. This device includes a cleaning fan, mounting cylinder, sealing cover, drive cylinder, connecting rod assembly, limit frame, cleaning frame, several inclined air holes, and jet ducts matching the inclined air holes. After the reactor has been in use for a period of time, the pipe wall of the mixing inlet pipe is periodically cleaned using this device to prevent lime powder from accumulating due to humidity, temperature, and other factors during long-term transport within the pipe. The drive cylinder controls the movement of the connecting rod assembly. The long connecting rod connected to the piston rod of the drive cylinder moves up and down, and through the transmission of the short connecting rod, the long connecting rod connected to the cleaning frame moves left and right, thereby driving the cleaning frame to reciprocate and clean the mixing inlet pipe. The wall of the intake pipe is scraped while the cleaning fan is started. The cleaning air is transported to several jet ducts through connecting pipes, and then enters the mixing intake pipe through several oblique air holes. The clumps of lime powder scraped off by the cleaning frame are blown away from the mixing intake pipe. A temperature control device is installed on the insulation pipe to maintain a stable temperature for the incoming air after it passes through the insulation pipe. This further reduces the possibility of lime powder solidifying and accumulating in the mixing intake pipe. Overall, this effectively reduces the frequency of pipe blockage, ensures stable delivery of desulfurizing agent, improves the reliability of the desulfurization system, reduces downtime caused by pipe blockage, and thus improves the overall production efficiency of the waste-to-energy plant.

[0023] The bend in the mixing intake pipe is provided with a large curvature elbow 27.

[0024] Because the bend in the mixing intake pipe has a large curvature elbow, the probability of lime powder accumulating at the pipe bend can be greatly reduced, further improving the ability of the pipe assembly to prevent the accumulation and solidification of mixed powder.

[0025] The temperature control device includes a covering tube 28, a circulation tube 29, a heating mechanism 30, heating oil 31, and a circulation pump 32. The covering tube is sleeved on the insulation tube, and an insulation cavity is formed between the inner wall of the covering tube and the outer wall of the insulation tube. The two ends of the circulation tube are respectively connected to the two ends of the covering tube and communicate with the insulation cavity. The heating mechanism and the circulation pump are both connected to the circulation tube, and the heating oil is placed inside the insulation cavity.

[0026] The temperature control device includes a covering tube, a circulation tube, a heating mechanism, heating oil, and a circulation pump. The covering tube is sleeved on the insulation tube, and an insulation cavity is formed between the inner wall of the covering tube and the outer wall of the insulation tube. The two ends of the circulation tube are connected to the two ends of the covering tube and communicate with the insulation cavity. The heating mechanism and the circulation pump are both connected to the circulation tube. The heating oil is placed inside the insulation cavity. By sleeved on the outside of the insulation tube and placing the heat-insulating oil inside the covering tube, and circulating the oil through the circulation tube and the circulation pump, and controlling the temperature through the heating mechanism, the air passing through the insulation tube can be stably controlled within a certain temperature range. This reduces the possibility of the mixed lime powder solidifying in the mixing inlet pipe due to temperature.

[0027] A dehumidification device 33 is also connected to the air inlet of the air duct. The dehumidification device includes an air inlet pipe 34, a pair of dehumidification boxes 35, a pair of connecting branch pipes 36, a pair of air supply pipes 37, and several solenoid valves 38. The pair of connecting branch pipes are both connected to the air inlet pipe. The several solenoid valves are respectively located on the pair of connecting branch pipes at the positions where they are connected to the air inlet pipe and at the positions where the pair of air supply pipes are connected to the air duct. One end of the pair of connecting branch pipes is connected to the pair of dehumidification boxes, and the pair of air supply pipes are respectively connected to the pair of dehumidification boxes and the air duct.

[0028] Because a dehumidification device is also connected to the air inlet of the air duct, the dehumidification device includes an air inlet pipe, a pair of dehumidification boxes, a pair of connecting branch pipes, a pair of air supply pipes, and several solenoid valves. The pair of connecting branch pipes are both connected to the air inlet pipe. The several solenoid valves are respectively located on the pair of connecting branch pipes at their connection points with the air inlet pipe and at their connection points with the pair of air supply pipes. One end of each pair of connecting branch pipes is connected to a pair of dehumidification boxes. The pair of air supply pipes are respectively connected to a pair of dehumidification boxes and the air duct. Outside air enters the connecting branch pipes through the air inlet pipe, and then enters the dehumidification boxes through the connecting branch pipes. After dehumidification in the dehumidification boxes, the air is dry... Dry air enters the air duct through the air supply pipe, keeping the air inside the duct relatively dry. This prevents the mixed lime powder from reacting with humid air due to high humidity, thus avoiding coking on the impeller and casing inside the blower. This protects the Roots blower, a crucial power source, extends its service life, reduces maintenance costs, and improves desulfurization efficiency. By installing solenoid valves on a pair of connecting branch pipes, the dehumidification components in the dehumidification box can be maintained and replaced periodically according to actual conditions. During maintenance and replacement, simply close the solenoid valves on the connecting branch pipe and the air supply pipe connected to the corresponding dehumidification box.

[0029] Each of the two dehumidification boxes is provided with an operating port and a sealing door panel 39 on the operating port.

[0030] Since both dehumidifier boxes are equipped with an operating port and a sealed door panel on the operating port, the interior of the dehumidifier box can be quickly replaced and maintained by opening the sealed door panel during maintenance.

[0031] A monitoring and control device 40 is also provided between the high-temperature flue gas inlet pipe, the feeding pipe, the Roots blower, and the temperature control device. The monitoring and control device includes a flue gas branch pipe 41, a flue gas analyzer 42, a flow valve 43, and a PLC control unit 44. The flue gas branch pipe is installed on the high-temperature flue gas inlet pipe, the flue gas analyzer is installed on the flue gas branch pipe, the flow valve is installed on the feeding pipe, and the PLC control unit is installed on the Roots blower. The flue gas analyzer, the flow valve, the Roots blower, and the heating mechanism are all connected and coordinated for control through the PLC control unit.

[0032] Because a monitoring and control device is also installed between the high-temperature flue gas inlet pipe, the feeding pipe, the Roots blower, and the temperature control device, the monitoring and control device includes a flue gas branch pipe, a flue gas analyzer, a flow valve, and a PLC control unit. The flue gas branch pipe is installed on the high-temperature flue gas inlet pipe, the flue gas analyzer is installed on the flue gas branch pipe, the flow valve is installed on the feeding pipe, and the PLC control unit is installed on the Roots blower. The flue gas analyzer, the flow valve, the Roots blower, and the heating mechanism are all connected and coordinated through the PLC control unit. The high-temperature flue gas is analyzed in real time by the flue gas analyzer, and the discharge speed of lime powder and the speed of the Roots blower are adjusted according to the analysis results. This achieves real-time intelligent adjustment of the entire desulfurization system, improves desulfurization efficiency, reduces energy consumption, reduces the workload of workers, and thus improves the overall economic and environmental benefits.

Claims

1. A waste incineration flue gas furnace dry desulfurization adsorption system, comprising a desulfurization reaction furnace, a high-temperature flue gas inlet pipe, a lime powder bin, a feeding pipe, a mixed inlet pipe, an exhaust pipe, an air pipe, and a Roots blower, wherein the high-temperature flue gas inlet pipe, the mixed inlet pipe, and the exhaust pipe are all connected with the desulfurization reaction furnace, the lime powder bin is connected with the mixed inlet pipe through the feeding pipe, and the two ends of the Roots blower are respectively connected with the mixed inlet pipe and the air pipe, characterized in that: An insulation pipe and a transition pipe are provided between the mixing intake pipe and the Roots blower. A cleaning device is installed inside the mixing intake pipe, insulation pipe, and transition pipe. The cleaning device includes a cleaning blower, a mounting cylinder, a sealing cover, a drive cylinder, a connecting rod assembly, a limit frame, a cleaning frame, several oblique air holes, and jet ducts matching the oblique air holes. The mounting cylinder is mounted on the transition pipe. The sealing cover matches the mounting cylinder and is detachably connected to it. The drive cylinder is mounted on the sealing cover and located inside the mounting cylinder. The limit frame is located inside the transition pipe below the mounting cylinder. The cleaning frame is located inside the mixing intake pipe. The limit frame has a passageway matching the connecting rod assembly, and the position of the passageway is relative to the mixing intake pipe. The bottom pipe wall is matched. The connecting rod group passes through the limiting frame and is movably connected at both ends to the piston rod of the sweeping frame and the driving cylinder, respectively. The connecting rod group includes a short connecting rod and a pair of long connecting rods. The two ends of the short connecting rod are respectively connected to the pair of long connecting rods and rotate in cooperation. The sweeping frame includes a main frame rod and several pairs of sweeping frame rods. The shape and size of the several pairs of sweeping frame rods are matched with the mixing air intake pipe. The several pairs of sweeping frame rods are symmetrically arranged on both sides of the main frame rod and the spacing is matched with the size of the short connecting rods. Several inclined air holes are arranged at the top of the mixing air intake pipe. Several jet air pipes are respectively connected to several inclined air holes. Several jet air pipes are all connected to the sweeping fan through connecting pipes. The heat preservation pipe is equipped with a temperature control device. ​ 2. A dry desulphurization adsorption system for a waste incineration flue gas furnace according to claim 1, characterized in that: The mixing intake pipe has a large curvature bend at the bend.

3. A dry desulphurization adsorption system for a waste incineration flue gas furnace according to claim 2, characterized in that: The temperature control device includes a covering tube, a circulation tube, a heating mechanism, heating oil, and a circulation pump. The covering tube is sleeved on the insulation tube, and an insulation cavity is formed between the inner wall of the covering tube and the outer wall of the insulation tube. The two ends of the circulation tube are respectively connected to the two ends of the covering tube and communicate with the insulation cavity. The heating mechanism and the circulation pump are both connected to the circulation tube, and the heating oil is placed inside the insulation cavity.

4. The dry desulfurization adsorption system in a waste incineration flue gas furnace according to claim 1, characterized in that: A dehumidification device is also connected to the air inlet of the air duct. The dehumidification device includes an air inlet pipe, a pair of dehumidification boxes, a pair of connecting branch pipes, a pair of air supply pipes, and several solenoid valves. The pair of connecting branch pipes are both connected to the air inlet pipe. The several solenoid valves are respectively installed on the pair of connecting branch pipes at the positions where they connect to the air inlet pipe and at the positions where the pair of air supply pipes connect to the air duct. One end of the pair of connecting branch pipes is connected to the pair of dehumidification boxes, and the pair of air supply pipes are respectively connected to the pair of dehumidification boxes and the air duct.

5. A dry desulphurization adsorption system for a waste incineration flue gas furnace according to claim 4, characterized in that: Each pair of dehumidifiers is equipped with an operating port and a sealed door panel on the operating port.

6. The dry desulfurization adsorption system in a waste incineration flue gas furnace according to claim 3, characterized in that: A monitoring and control device is also provided between the high-temperature flue gas inlet pipe, the feeding pipe, the Roots blower, and the temperature control device. The monitoring and control device includes a flue gas branch pipe, a flue gas analyzer, a flow valve, and a PLC control unit. The flue gas branch pipe is installed on the high-temperature flue gas inlet pipe, the flue gas analyzer is installed on the flue gas branch pipe, the flow valve is installed on the feeding pipe, and the PLC control unit is installed on the Roots blower. The flue gas analyzer, the flow valve, the Roots blower, and the heating mechanism are all connected and coordinated for control through the PLC control unit.

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