SCR denitration integrated device applied to RTO incineration system

Abstract

The invention discloses an SCR denitration integrated device applied to an RTO incineration system, and relates to the technical field of waste gas treatment environmental protection engineering. The SCR denitration integrated device applied to the RTO incineration system comprises a shell, an ammonia gas preparation box fixed to the side wall of the shell and used for providing a reducing agent for denitration, a heat exchange box fixed to the side wall of the shell and used for changing the flue gas temperature, and a mixing box located above the heat exchange box and used for changing the mixing degree of the reducing agent and flue gas. A gas conveying assembly for conveying flue gas and a reducing agent and a flow guide assembly for changing the mixing degree are arranged outside the shell, and the gas conveying assembly comprises a low-temperature gas inlet pipe communicated with the heat exchange box and used for conveying low-temperature flue gas; the mixing degree of the ammonia gas and the flue gas is effectively improved, the situation that the local ammonia concentration is too high or too low is avoided, the problem of ammonia escape caused by the fact that NOx in a part of areas is not effectively removed is avoided, and the problems of hot spots, ammonia deposition and the like caused by uneven mixing are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment environmental protection engineering, and in particular to an SCR denitration integrated device applied to an RTO incineration system. Background Art

[0002] RTO incineration system is a highly efficient waste gas treatment equipment, mainly used to treat industrial waste gas containing volatile organic compounds (VOCs), hazardous air pollutants (HAPs) and other combustible substances. At present, factories equipped with RTO systems later found that they needed to further reduce NOx emissions. On the basis of not changing the original RTO structure, an SCR denitrification device can be added. However, the current SCR denitrification device usually needs to be equipped with a reducing agent when in use. At present, when the reducing agent reaches the working state, an additional heat source needs to be set up, which greatly increases the equipment cost and operating expenses. In addition, the reducing agent and the flue gas are transported to the same inner cavity by only two pipelines to merge the two airflows. The mixing effect is relatively general, and it is easy to have problems such as hot spots and ammonia deposition.

[0003] For example, the announcement number CN211925803U discloses an integrated desulfurization, dust removal and denitrification treatment system for flue gas from a biomass boiler. Although it can first remove dust from the flue gas discharged from the RTO incineration system and then desulfurize and denitrify it to avoid catalyst clogging, it still needs to set up an additional heat source to treat the reducing agent to make it reach a working state. The announcement number CN109442438B discloses a comprehensive treatment process and system for ammonia-containing organic waste gas and ammonia-containing organic waste water. Although it directly uses high-temperature flue gas to provide heat to the reducing agent, the mixing effect between the reducing agent and the flue gas is relatively general, resulting in uneven distribution of ammonia concentration between internal regions. After contacting the catalyst bed, hot spots and ammonia deposition problems are prone to occur. Therefore, an SCR denitrification integrated device for use in an RTO incineration system is proposed. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides an SCR denitration integrated device applied to an RTO incineration system, which solves the problems raised in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an SCR denitration integrated device applied to an RTO incineration system, comprising a shell, an ammonia preparation box fixed on the side wall of the shell to provide a reducing agent for denitration, a heat exchange box fixed on the side wall of the shell to change the flue gas temperature, and a mixing box located above the heat exchange box to change the degree of mixing of the reducing agent and the flue gas, a gas delivery component for conveying flue gas and reducing agent and a flow guide component for changing the degree of mixing are arranged outside the shell, and the gas delivery component comprises: a low-temperature air intake pipe, one end of which is connected to the heat exchange box to convey low-temperature flue gas; a high-temperature air intake pipe, one end of which is connected to the ammonia preparation box to convey high-temperature flue gas; a medium-temperature pipe, one end of which is connected to the heat exchange box and the other end of which is connected to the mixing box to convey low-temperature flue gas after heat absorption; an ammonia pipe, one end of which is connected to the ammonia preparation box and the other end of which is connected to the mixing box to convey high-temperature flue gas preliminarily mixed with the reducing agent;

[0006] The flow guide assembly includes: a flow guide hood fixed in the mixing box to guide the flow direction of the smoke; a flow guide plate fixed in the flow guide hood to change the flow direction of the smoke; and a reflection plate fixed in the mixing box to change the mixing degree of the smoke and the reducing agent.

[0007] Preferably, the gas delivery assembly also includes: a recovery pipe, one end of which is fixed at the air outlet of the shell, and the other end passes through the heat exchange box to discharge the clean flue gas; an exhaust port, which is fixed on one end of the recovery pipe close to the heat exchange box; a movable shaft, which is fixed in the heat exchange box; and a cone plate, which is fixed on the movable shaft to change the flow direction of the clean flue gas.

[0008] Preferably, the guide assembly also includes: an exhaust hole, which is opened on the guide cover to increase the flow direction of the smoke; a mounting plate, which is fixed on the reflective plate; and a guide block, which is hinged on the mounting plate through a mounting shaft and a torsion spring to dynamically change the flow direction of the smoke.

[0009] Preferably, the guide assembly also includes: an electric push rod fixed on the top of the shell; a steel wire rope, one end of which is fixed on the output end of the electric push rod; a guide plate, movably installed at the air outlet of the mixing box through a volute spring and a connecting shaft, and the side wall is fixed to the other end of the steel wire rope.

[0010] Preferably, the shell is also provided with an adjustment component for changing the operating mode of the guide component, and the adjustment component includes: a power motor, which is fixed to the top of the shell through a motor box to provide power for the operation of the adjustment component; a movable shaft, one end of which is fixed to the output end of the power motor to transmit the power required for the operation of the adjustment component; a winding wheel, the side wall of which is fixed to the other end of the movable shaft; a second steel wire rope, one end of which is fixed to the winding wheel; and a push plate, the side wall of which is fixed to the other end of the second steel wire rope.

[0011] Preferably, the adjusting assembly further includes: a first spring fixed on the side wall of the push plate to provide elastic force for resetting the push plate; a first guide plate fixed on the top of the housing and slidably sleeved outside the push plate to limit and guide the push plate; a push block with its top slidably abutted against the bottom of the push plate; a sliding rod with one end fixed to the bottom of the push block to support the push block; a second spring with one end fixed to the bottom of the push block and the other end fixed to the top of the housing to provide elastic force for resetting the push block.

[0012] Preferably, the adjusting assembly further includes: a pressing plate fixed to the bottom of the sliding rod; a side support rod fixed to the pressing plate to support the pressing plate; a traction rope fixed to the side support rod; a traction rod with its side wall abutted against the traction rope.

[0013] Preferably, the adjusting assembly further includes: a second guide plate fixed to the bottom of the inner wall of the mixing box and slidably sleeved outside the traction rod to limit the moving direction of the traction rod; a third steel wire rope with one end fixed to the side wall of the traction rod and the other end fixed to the side wall of the winding wheel to conduct the power required for the movement of the traction rod.

[0014] Preferably, an enhancing assembly for enhancing the flow guiding effect is arranged in the flow guiding block. The enhancing assembly includes: a driven rod slidably penetrating through the flow guiding block; a third spring with one end fixed to the side wall of the driven rod and the other end fixed inside the flow guiding block to provide elastic force for resetting the driven rod.

[0015] Preferably, the enhancing assembly further includes: an extension block hinged inside the flow guiding block through a support shaft and a torsion spring to increase the flow direction of the air flow; a limiting rod with one end fixed to the side wall of the driven rod and the other end slidably penetrating through the flow guiding block to limit the moving direction of the driven rod.

[0016] The present invention provides an SCR denitration integrated device applied to an RTO incineration system. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The SCR denitrification integrated device applied to the RTO incineration system is applied to the denitrification transformation or new construction project of the flue gas of the RTO incinerator. Compared with the process route of increasing the hot blast stove system to heat up the flue gas, it has significant technical advantages and economy. Whether it is a new construction or transformation project, during installation, only the integrated shell and the RTO incinerator need to be installed separately and then the pipelines are connected. Especially for the transformation project, after moving the shell to the preset position, the pipelines are connected, which simplifies the on-site installation construction period and has strong popularization and application value. It effectively utilizes its own generated heat. On the one hand, it uses the hot flue gas at the outlet of the denitrification reactor to preheat the low-temperature flue gas at the outlet of the RTO. On the other hand, it uses a small part of the high-temperature flue gas in the RTO incinerator furnace to gasify and decompose the reducing agent and simultaneously heat and raise the temperature of the raw flue gas, thereby reducing the input of heating equipment and fuel for the denitrification system. By introducing the low-temperature flue gas at the outlet of the RTO incinerator to adjust and cool down the high-temperature flue gas, the material of the high-temperature flue duct can be reduced, saving the input cost of materials.

[0018] (2) The SCR denitrification integrated device applied to the RTO incineration system can ensure the uniform distribution of ammonia and nitrogen oxides (NOx) before entering the SCR reactor shell through sufficient mixing, which helps the two react more effectively. When they reach the surface of the catalyst bed, ideal reaction conditions have been formed, thereby increasing the conversion rate of NOx. At the same time, it effectively improves the mixing degree of ammonia and flue gas, avoiding the situation of too high or too low local ammonia concentration, and preventing the problem of ammonia escape caused by ineffective removal of NOx in some areas. It reduces problems such as hot spots and ammonia deposition caused by uneven mixing, and also reduces the risk of equipment wear and corrosion, thereby reducing the cost of maintenance and component replacement during long-term operation.

[0019] (3) The SCR denitrification integrated device applied to the RTO incineration system judges according to the sulfur content in the treated and purified flue gas discharged from the end of the SCR reactor shell, so as to control the intake air volume of the high-temperature intake pipe and switch the operating state of the diversion component at the same time; by monitoring the sulfur content of the purified flue gas in real time and adjusting the mixing intensity and input gas volume of ammonia according to the monitoring results, and by starting the adjustment component in a timely manner to adjust the mixing mode, it can take measures to prevent catalyst poisoning when detecting a higher sulfur content, thereby extending the service life of the catalyst in the catalyst bed.

[0020] Other features and advantages of the present invention will be described in the following specification, and some will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Another perspective view of the overall structure of the present invention;

[0023] Figure 3 Structural diagram of the recovery pipe of the present invention;

[0024] Figure 4 Structural diagram of the flow guide plate of the present invention;

[0025] Figure 5 Internal structural diagram of the heat exchange box of the present invention;

[0026] Figure 6 Cross-sectional structural diagram of the mixing box of the present invention;

[0027] Figure 7 Internal structural diagram of the mixing box of the present invention;

[0028] Figure 8 Structural diagram of the diversion plate of the present invention;

[0029] Figure 9 Structural diagram of the diversion cover of the present invention;

[0030] Figure 10 Position structural diagram of the reflector of the present invention;

[0031] Figure 11 Position schematic diagram of the towing bar of the present invention;

[0032] Figure 12 Position schematic diagram of the mounting plate of the present invention;

[0033] Figure 13 Combined state diagram of the strengthening components of the present invention;

[0034] Figure 14 Cross-sectional structural diagram of the diversion block of the present invention;

[0035] Figure 15 Exploded state diagram of the strengthening components of the present invention.

[0036] In the figure: 1. Shell; 101. Low-temperature air intake pipe; 102. High-temperature air intake pipe; 103. Ammonia preparation box; 104. Adjustment pipeline; 105. Heat exchange box; 106. Medium-temperature pipe; 107. Ammonia pipe; 108. Mixing box; 109. Recovery pipe; 110. Exhaust port; 1010. Active shaft; 1011. Cone plate; 2. Electric push rod; 21. Wire rope 1; 22. Guide plate; 3. Drainage cover; 31. Drainage plate; 32. Exhaust hole; 4. Power motor ; 41. movable shaft; 42. winding wheel; 43. wire rope 2; 44. push plate; 45. spring 1; 46. guide plate 1; 47. push block; 48. sliding rod; 481. spring 2; 49. pressure plate; 410. side support rod; 411. traction rope; 412. traction rod; 413. guide plate 2; 414. wire rope 3; 5. mounting plate; 51. guide block; 52. driven rod; 53. spring 3; 54. expansion block; 55. limit rod; 6. reflector. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 15 , the present invention provides the following technical solutions:

[0039] Embodiment 1: An SCR denitration integrated device applied to an RTO incineration system, comprising a housing 1, an ammonia preparation box 103 fixedly mounted on the side wall of the housing 1 to provide a reducing agent for denitration, a heat exchange box 105 fixedly mounted on the side wall of the housing 1 to change the flue gas temperature, and a mixing box 108 located above the heat exchange box 105 to change the degree of mixing of the reducing agent and the flue gas. A gas transmission component for conveying flue gas and reducing agent is arranged outside the housing 1, and the gas transmission component comprises: a low-temperature air intake pipe 101, a high-temperature air intake pipe 102, a regulating pipeline 104, a medium-temperature pipe 106, an ammonia pipe 107, a recovery pipe 109, an exhaust port 110, a movable shaft 1010, and a cone plate 1011;

[0040] One end of the low-temperature air inlet pipe 101 is connected to the side wall of the heat exchange box 105, and is used to transport low-temperature flue gas into the heat exchange box 105;

[0041] One end of the high-temperature air inlet pipe 102 is connected to the side wall of the ammonia preparation box 103, and is used to transport high-temperature flue gas into the ammonia preparation box 103;

[0042] One end of the regulating pipeline 104 is connected to the low-temperature intake pipe 101, and the other end of the regulating pipeline 104 is connected to the high-temperature intake pipe 102, which is used to reduce the temperature of the high-temperature flue gas transported in the high-temperature intake pipe 102;

[0043] One end of the medium-temperature pipe 106 is connected to the heat exchange box 105, and the other end of the medium-temperature pipe 106 is connected to the mixing box 108, which is used to transport the low-temperature flue gas after heat absorption into the mixing box 108. The medium-temperature pipe 106 can be arranged in a circular pipe shape or a rectangular flue shape, and is selected according to the use requirements;

[0044] One end of the ammonia pipe 107 is connected to the side wall of the ammonia preparation box 103, and the other end of the ammonia pipe 107 is connected to the mixing box 108 to transport the high-temperature flue gas of the preliminary mixed reducing agent;

[0045] One end of the recovery pipe 109 is fixedly connected to the air outlet of the housing 1, and the other end of the recovery pipe 109 passes through the heat exchange box 105. The recovery pipe 109 is used to discharge the clean flue gas;

[0046] One end of the exhaust port 110 is fixedly connected to one end of the recovery pipe 109 close to the heat exchange box 105, and the exhaust port 110 is located outside the heat exchange box 105, which is used to transport the clean flue gas to the next treatment link or directly discharge it. A bottom plate is fixedly installed at one end of the exhaust port 110 located in the heat exchange box 105. The heat exchange box 105 is divided into two inner cavities by the bottom plate. One inner cavity is communicated with the recovery pipe 109 and the exhaust port 110, and the other inner cavity is communicated with the low-temperature intake pipe 101;

[0047] Both ends of the movable shaft 1010 are fixedly installed on the inner wall of the heat exchange box 105;

[0048] The conical plate 1011 is fixedly installed on the movable shaft 1010, which is used to change the flow direction of the clean flue gas, so that the relatively high-temperature clean flue gas can conduct heat to the low-temperature flue gas, so that the clean flue gas impacts on the conical conical plate 1011 and spreads, so that the clean flue gas is dispersed in the inner cavity formed between the heat exchange box 105 and the bottom plate of the exhaust port 110, which is more convenient for heat exchange with the low-temperature flue gas transported into the heat exchange box 105 by the low-temperature intake pipe 101.

[0049] During use, a stream of high-temperature flue gas with a temperature of about 800 °C is led out from the RTO incinerator furnace chamber and transported to the ammonia preparation box 103 through the high-temperature intake pipe 102. The high-temperature flue gas is used to heat and vaporize ammonia water or urea solution to prepare ammonia, and the prepared ammonia is transported to the mixing box 108 through the ammonia pipe 107;

[0050] A stream of low-temperature flue gas with a temperature of 70-120°C is drawn from the outlet of the RTO incinerator and transported to the heat exchange box 105 through the low-temperature air intake pipe 101. The heat exchange box 105 preheats the temperature of this part of the flue gas. At the same time, when the flue gas temperature of the high-temperature air intake pipe 102 is too high, the low-temperature flue gas is transported to the high-temperature air intake pipe 102 and the ammonia preparation box 103 through the regulating pipeline 104. After being preheated by the heat exchange box 105, the low-temperature flue gas will rise by another 50-90°C and be transported to the mixing box 108 through the medium-temperature pipe 106. The cold end and the hot end of the heat exchange box 105 are respectively provided with differential pressure transmitters to monitor the resistance drop changes on both sides of the heat exchange box. When the resistance suddenly increases, the heat exchange box 105 is cleaned;

[0051] A single or multiple sets of dual-fluid spray guns are used in the ammonia preparation box 103 to spray ammonia water with a concentration of 20-25% or urea solution with a concentration of 35-50% into the ammonia preparation box 103, and ammonia is generated after thermal decomposition, and is transported to the mixing box 108 through the ammonia pipe 107 together with the high-temperature flue gas;

[0052] In the mixing box 108, ammonia is mixed with flue gas generated by the RTO incinerator and then enters the SCR reactor shell 1, where a reduction reaction occurs effectively to remove nitrogen oxides in the flue gas. A differential pressure transmitter is set on the catalyst bed to monitor the change in the resistance drop of the catalyst bed. When the resistance suddenly increases, the catalyst bed is cleaned in time.

[0053] The clean flue gas is transported to the heat exchange box 105 through the recovery pipe 109, and the low-temperature flue gas entering the heat exchange box 105 through the low-temperature air inlet pipe 101 is preheated. The cooled clean flue gas is transported to the downstream alkali washing or water washing system through the exhaust port 110 for treatment and then discharged.

[0054] Embodiment 2, the technical solution of this embodiment is different from that of embodiment 1, including: a gas delivery component for conveying smoke and reducing agent and a flow guide component for changing the degree of mixing are arranged outside the housing 1, and the flow guide component includes: an electric push rod 2, a steel wire rope 21, a flow guide plate 22, a flow guide cover 3, a flow guide plate 31, an exhaust hole 32, a mounting plate 5, a flow guide block 51, and a reflector 6;

[0055] One end of the electric push rod 2 is fixedly mounted on the top of the housing 1;

[0056] One end of the steel wire rope 21 is fixedly mounted on the output end of the electric push rod 2;

[0057] The guide plate 22 is fixedly connected to the connecting shaft, and both ends of the connecting shaft are movably hinged at the air outlet of the mixing box 108 through a worm spring. The side wall of the guide plate 22 is fixedly connected to the other end of the wire rope 21. The guide plate 22 is used to change the angle at which the smoke enters the housing 1 after the mixing and reduction connection.

[0058] One end of the drainage hood 3 is fixedly installed inside the mixing box 108, and the contact points of the medium-temperature pipe 106 and the ammonia pipe 107 with the mixing box 108 are both located inside the drainage hood 3. The drainage hood 3 is used to guide the flow direction of the flue gas;

[0059] One end of the drainage plate 31 is fixedly installed on the inner wall of the drainage hood 3. The drainage plate 31 is used to change the flow direction of the flue gas;

[0060] The exhaust holes 32 are opened on the drainage hood 3. The exhaust holes 32 are used to increase the flow direction of the flue gas;

[0061] One end of the reflector 6 is fixedly installed inside the mixing box 108. The reflector 6 is located at the air outlet of the drainage hood 3. The reflector 6 is used to change the mixing degree of the flue gas and the reducing agent;

[0062] One end of the mounting plate 5 is fixedly installed on the reflector 6;

[0063] The side wall of the flow guide block 51 is fixedly connected to the mounting shaft. Both ends of the mounting shaft are hinged to the mounting plate 5 through torsion springs. The flow guide block 51 is used to dynamically change the flow direction of the flue gas.

[0064] During use, when ammonia gas, high-temperature flue gas, and medium-temperature flue gas are transported to the mixing box 108 through the ammonia pipe 107 and the medium-temperature pipe 106, these flue gases will impact on the drainage hood 3. The drainage hood 3 is used to gather and guide these flue gases. After the flue gases impact the inner wall of the drainage hood 3, under the drainage of the spiral drainage plate 31, a spiral air flow is generated, thus performing preliminary mixing;

[0065] After being gathered by the drainage hood 3, the air flow flows through the narrow part of the drainage hood 3 and then flows out from the air outlet of the drainage hood 3. Under the Bernoulli effect, the air flow will accelerate and then decelerate, and finally impact on the reflector 6. Through the arc-shaped reflector 6, the air flow is reflected towards the side where the drainage hood 3 is located. At the same time, part of the air flow will be discharged through the exhaust holes 32 opened on the surface of the drainage hood 3. The air flow discharged from the exhaust holes 32 is mixed with the air flow reflected by the reflector 6 again;

[0066] At the same time, the reflector 6 provides a supporting force to the mounting plate 5, and the mounting plate 5 provides a supporting force to the flow guide block 51. The air flow reflected by the reflector 6 will blow the flow guide block 51 to move, so that the flow guide block 51 rotates around the mounting shaft as the axis under the blowing of the air flow. At the same time, the flow guide block 51 will block the air flow, causing the flow direction of the air flow to change. When the flow direction of the air flow changes, the force acting on the flow guide block 51 will change, enabling the flow guide block 51 to reset under the action of the torsion spring, enabling the flow guide block 51 to rotate back and forth around the mounting shaft, thereby further changing the flow direction of the air flow and further mixing ammonia gas in the flue gas;

[0067] Enable ammonia to be fully mixed with the flue gas. After mixing, the gas is directly discharged into the housing 1 through the outlet of the mixing box 108, and comes into full contact with the catalyst bed in the housing 1, so as to fully carry out the reduction reaction and perform denitration operation;

[0068] When the gas is discharged into the housing 1 through the outlet of the mixing box 108, by controlling the operation of the electric push rod 2, the steel wire rope one 21 is driven to move by the electric push rod 2, and the steel wire rope one 21 drives the deflector 22 to move. When the electric push rod 2 drives the steel wire rope one 21 to move towards the side where the power motor 4 is located, the steel wire rope one 21 drives the deflector 22 to turn upwards around the fixed axis. After the deflector 22 turns upwards, the airflow can enter a farther position in the housing 1;

[0069] When the electric push rod 2 drives the steel wire rope one 21 to move away from the side where the power motor 4 is located, the steel wire rope one 21 drives the deflector 22 to turn downwards around the fixed axis. After the deflector 22 turns downwards, the airflow can enter a closer position in the housing 1.

[0070] Embodiment 3. The technical solution of this embodiment different from that of Embodiment 2 includes: An adjustment component for changing the operation mode of the diversion component is further provided on the housing 1. The adjustment component includes: a power motor 4, a movable shaft 41, a winding wheel 42, a steel wire rope two 43, a push plate 44, a spring one 45, a guide plate one 46, a push block 47, a sliding rod 48, a spring two 481, a pressing plate 49, a side support rod 410, a traction rope 411, a traction rod 412, a guide plate two 413, and a steel wire rope three 414;

[0071] The side wall of the power motor 4 is fixedly installed on the top of the housing 1 through a motor box, and the power motor 4 is used to provide power for the operation of the adjustment component;

[0072] One end of the movable shaft 41 is fixedly installed on the output end of the power motor 4 through a coupling, and the movable shaft 41 is used to conduct the power required for the operation of the adjustment component;

[0073] The side wall of the winding wheel 42 is fixedly installed at the other end of the movable shaft 41;

[0074] One end of the steel wire rope two 43 is fixedly installed on the winding wheel 42;

[0075] The side wall of the push plate 44 is fixedly installed at the other end of the steel wire rope two 43;

[0076] One end of the spring one 45 is fixedly installed on the side wall of the push plate 44, and the other end of the spring one 45 is fixedly installed on the inner wall of the guide plate one 46. The spring one 45 is used to provide elastic force for resetting the push plate 44;

[0077] The bottom of the first guide plate 46 is fixedly installed at the top of the housing 1. One end of the push plate 44 slides through the first guide plate 46, and the first guide plate 46 is used to limit the moving direction of the push plate 44;

[0078] The top of the push block 47 slides and abuts against the bottom of the push plate 44. The bottom of the push plate 44 is provided with an inclined surface, and the top of the push block 47 is provided with an inclined surface, and the inclined surfaces of the two are slidably adapted;

[0079] One end of the sliding rod 48 is fixedly installed at the bottom of the push block 47. The sliding rod 48 provides support for the push block 47, and the other end of the sliding rod 48 slides through the housing 1 and the mixing box 48;

[0080] One end of the second spring 481 is fixedly installed at the bottom of the push block 47, and the other end of the second spring 48 is fixedly installed at the top of the housing 1. The second spring 481 is used to provide elastic force for the reset of the push block 47;

[0081] The number of the pressing plates 49 is three groups. The top of one of the pressing plates 48 is fixedly installed at the bottom of the sliding rod 48;

[0082] The side walls of the other two pressing plates 49 are correspondingly fixedly installed with a side support rod 410. The side support rod 410 is used to provide support for the pressing plate 49. One ends of the two side support rods 410 correspondingly slide through the third guide plate. The bottoms of the two third guide plates are fixedly installed at the bottom of the inner wall of the mixing box 108. A fourth spring is correspondingly fixedly installed between the two third guide plates and the two side support rods 410. The fourth spring is used to provide elastic force for the reset of the corresponding side support rod 410;

[0083] Both ends of the towing rope 411 are respectively fixedly installed on the side walls of the two side support rods 410. The towing rope 411 is made of iron or steel material;

[0084] The side wall of the towing rod 412 abuts against the towing rope 411 and is used to conduct the power required for the movement of the towing rope 411;

[0085] The bottom of the second guide plate 413 is fixedly installed at the bottom of the inner wall of the mixing box 108. One end of the towing rod 412 slides through the second guide plate 413, and the second guide plate 413 is used to limit the moving direction of the towing rod 412;

[0086] One end of the third steel wire rope 414 is fixedly installed on the side wall of the towing rod 412, and the other end of the third steel wire rope 414 is fixedly installed on the side wall of the winding wheel 42. The third steel wire rope 414 is used to conduct the power required for the movement of the towing rod 412;

[0087] Further, an enhancing component for enhancing the guiding effect is arranged in the guiding block 51. The enhancing component includes: a driven rod 52, a third spring 53, an expanding block 54, and a limiting rod 55

[0088] One end of the follower rod 52 slides through the flow guiding block 51;

[0089] One end of the third spring 53 is fixedly installed on the side wall of the follower rod 52, and the other end of the third spring 53 is fixedly installed in the flow guiding block 51. The third spring 53 provides a restoring elastic force for the follower rod 52;

[0090] The side wall of the expansion block 54 is fixedly installed on the support shaft, and the support shaft is hinged in the flow guiding block 51 through a torsion spring. The expansion block 54 is used to increase the flow direction of the air flow;

[0091] One end of the limiting rod 55 is fixedly installed on the side wall of the follower rod 52, and the other end of the limiting rod 55 slides through the flow guiding block 51. The limiting rod 55 is used to limit the moving direction of the follower rod 52.

[0092] During use, it is judged according to the sulfur content in the treated and purified flue gas discharged from the end of the SCR reactor housing 1, so as to control the air intake of the high-temperature intake pipe 102. At the same time, the regulating assembly is started to switch the operating state of the flow guiding assembly;

[0093] By starting the power motor 4, the power motor 4 drives the moving shaft 41 to rotate, the moving shaft 41 drives the winding wheel 42 to rotate, the winding wheel 42 synchronously winds the second steel wire rope 43 and the third steel wire rope 414. The second steel wire rope 43 drives the push plate 44 to move. The push plate 44 is slidably matched with the first guiding plate 46, so that the push plate 44 can only move linearly along the first guiding plate 46 under the action of an external force. The inclined surface at the bottom of the push plate 44 squeezes the inclined surface at the top of the sliding rod 48. At the same time, the sliding rod 48 is slidably matched with the mixing box 108, so that the sliding rod 48 can only move linearly in the vertical direction;

[0094] The sliding rod 48 drives the pressing plate 49 to move. The pressing plate 49 squeezes the follower rod 52 to move. The follower rod 52 drives the limiting rod 55 to move. The limiting rod 55 is slidably matched with the flow guiding block 51, so that the follower rod 52 can only move linearly along the flow guiding block 51. The follower rod 48 squeezes the expansion block 54 to move, so that the expansion block 54 rotates around the support shaft and extends out of the flow guiding block 51, further increasing the resistance between the flow guiding block 51 and the air flow. While reducing the air flow velocity, the flow direction of the air flow is changed, further improving the mixing effect. At the same time, the pressing plate 49 is arc-shaped to fit the moving path of the flow guiding block 51 rotating around the fixed shaft. No matter how the flow guiding block 51 rotates, the follower rod 52 can obtain a stable pressure;

[0095] The traction rod 412 is driven to move by the wire rope three 414. The traction rod 412 is slidably adapted to the guide plate two 413, so that the traction rod 412 can only move linearly along the guide plate two 413. The traction rod 412 drives the traction rope 411 to move. The traction rope 411 drives the pressing plates 49 on the left and right sides of the drainage cover 3 to move synchronously through the side support rods 410, so that the pressing plates 49 on the left and right sides of the drainage cover 3 move towards the center position of the drainage cover 3 at the same time, so that the driven rods 52 on both sides can also make the expansion blocks 54 at this place extend out of the diversion blocks 51;

[0096] When the power motor 4 rotates in the reverse direction, the wire rope two 43 and the wire rope three 414 are released from the winding wheel 42. The wire rope two 43 no longer applies a pulling force to the push plate 44, so that the push plate 44 is reset under the action of the spring one 45. At the same time, the sliding rod 48 also loses the extrusion force and is reset under the action of the spring two 481. The driven rod 52 loses the extrusion force of the pressing plate 49 and is reset under the action of the spring three 53. The side support rod 410 loses the pulling force of the wire rope three 414 and is also reset under the action of the spring four.

[0097] Further, in another embodiment different from the foregoing embodiment, the power motor 4, the movable shaft 41, and the winding wheel 42 can be simplified into a driving element and a fixed part, and the driving element drives the fixed part to move linearly, thereby driving the two wire ropes to move.

[0098] At the same time, the content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0099] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0100] Vertical: The vertical defined in this application is not limited to an absolutely vertically intersecting (angle of 90 degrees) relationship. A relationship that is not an absolutely vertically intersecting relationship caused by factors such as assembly tolerances, design tolerances, and structural flatness is allowed. An error within a small angle range is allowed. For example, within the assembly error range of 80 degrees to 100 degrees, it can be understood as a vertical relationship.

[0101] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An SCR denitration integrated device applied to an RTO incineration system, comprising a housing (1), an ammonia preparation tank (103) fixed on the side wall of the housing (1) to provide a reducing agent for denitration, a heat exchange tank (105) fixed on the side wall of the housing (1) to change the flue gas temperature, and a mixing tank (108) located above the heat exchange tank (105) to change the mixing degree of the reducing agent and the flue gas, characterized in that, An air delivery component for conveying flue gas and a reducing agent and a diversion component for changing the mixing degree are arranged outside the housing (1). The air delivery component includes: A low-temperature intake pipe (101) with one end connected to the heat exchange box (105) for conveying low-temperature flue gas; A high-temperature intake pipe (102) with one end connected to the ammonia preparation box (103) for conveying high-temperature flue gas; A medium-temperature pipe (106) with one end connected to the heat exchange box (105) and the other end connected to the mixing box (108) for conveying the low-temperature flue gas after heat absorption; An ammonia pipe (107) with one end connected to the ammonia preparation box (103) and the other end connected to the mixing box (108) for conveying the high-temperature flue gas with the reducing agent preliminarily mixed; The diversion component includes: A diversion hood (3) fixed inside the mixing box (108) to guide the flow direction of the flue gas; A diversion plate (31) fixed inside the diversion hood (3) to change the flow direction of the flue gas; A reflection plate (6) fixed inside the mixing box (108) to change the mixing degree of the flue gas and the reducing agent.

2. The SCR denitration integrated device applied to the RTO incineration system according to claim 1, wherein The air delivery component further includes: A recovery pipe (109) with one end fixed at the air outlet of the housing (1) and the other end passing through the heat exchange box (105) to discharge the clean flue gas; An exhaust port (110) fixed at one end of the recovery pipe (109) close to the heat exchange box (105); A movable shaft (1010) fixed inside the heat exchange box (105); A conical plate (1011) fixed on the movable shaft (1010) to change the flow direction of the clean flue gas.

3. An SCR denitrification integrated device applied to an RTO incineration system according to claim 1, characterized in that, The diversion component further includes: Exhaust holes (32) opened on the diversion hood (3) to increase the flow direction of the flue gas; A mounting plate (5) fixed on the reflection plate (6); A diversion block (51) hinged to the mounting plate (5) through a mounting shaft and a torsion spring to dynamically change the flow direction of the flue gas.

4. An SCR denitration integrated device applied to an RTO incineration system according to claim 3, characterized in that, The diversion component further includes: An electric push rod (2) fixed on the top of the housing (1); A first steel wire rope (21) with one end fixed on the output end of the electric push rod (2); A diversion plate (22) movably installed at the air outlet of the mixing box (108) through a spiral spring and a connecting shaft, and the side wall is fixed to the other end of the first steel wire rope (21).

5. The integrated SCR denitration device applied to the RTO incineration system according to claim 1, wherein, An adjustment component for changing the operation mode of the diversion component is further arranged on the housing (1). The adjustment component includes: A power motor (4) fixed on the top of the housing (1) through a motor box to provide power for the operation of the adjustment component; A movable shaft (41) with one end fixed on the output end of the power motor (4) to conduct the power required for the operation of the adjustment component; A winding wheel (42) with the side wall fixed to the other end of the movable shaft (41); A second steel wire rope (43) with one end fixed on the winding wheel (42); A push plate (44) with the side wall fixed to the other end of the second steel wire rope (43).

6. The integrated SCR denitration device applied to the RTO incineration system according to claim 5, characterized in that The adjustment component further includes: A first spring (45) fixed on the side wall of the push plate (44) to provide elastic force for the reset of the push plate (44); A first guide plate (46) fixed on the top of the housing (1) and slidably sleeved outside the push plate (44) to limit and guide the push plate (44); A push block (47) with the top slidably abutted against the bottom of the push plate (44); The sliding rod (48) has one end fixed to the bottom of the push block (47) to provide support for the push block (47). The second spring (481) has one end fixed to the bottom of the push block (47) and the other end fixed to the top of the housing (1) to provide elastic force for the reset of the push block (47).

7. The integrated SCR denitration device applied to the RTO incineration system according to claim 6, wherein, The adjustment assembly further includes: The pressing plate (49) is fixed to the bottom of the sliding rod (48). The side support rod (410) is fixed to the pressing plate (49) to provide support for the pressing plate (49). The towing rope (411) is fixed to the side support rod (410). The towing rod (412) has its side wall abutted against the towing rope (411).

8. An SCR denitrification integrated device applied to an RTO incineration system according to claim 7, characterized in that, The adjustment assembly further includes: The second guide plate (413) is fixed to the bottom of the inner wall of the mixing box (108) and is slidably sleeved outside the towing rod (412) to limit the moving direction of the towing rod (412). The third steel wire rope (414) has one end fixed to the side wall of the towing rod (412) and the other end fixed to the side wall of the winding wheel (42) to conduct the power required for the movement of the towing rod (412).

9. An SCR denitration integrated device applied to an RTO incineration system according to claim 3, characterized in that, An enhancing assembly for enhancing the flow guiding effect is arranged in the flow guiding block (51), and the enhancing assembly includes: The driven rod (52) is slidably inserted through the flow guiding block (51). The third spring (53) has one end fixed to the side wall of the driven rod (52) and the other end fixed inside the flow guiding block (51) to provide elastic force for the reset of the driven rod (52).

10. An SCR denitration integrated device applied to an RTO incineration system according to claim 9, characterized in that, The enhancing assembly further includes: The expansion block (54) is hinged inside the flow guiding block (51) through a support shaft and a torsion spring to increase the flow direction of the air flow. The limiting rod (55) has one end fixed to the side wall of the driven rod (52) and the other end slidably inserted through the flow guiding block (51) to limit the moving direction of the driven rod (52).

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