Tail gas combustion furnace

Abstract

The invention relates to the technical field of waste gas incineration treatment, and particularly discloses a tail gas combustion furnace which comprises a furnace body, a first gas inlet and a second gas inlet are formed in the furnace body, a mixing mechanism, a gas inlet assembly and an adjusting piece are arranged in the furnace body, the mixing mechanism comprises a connecting piece and a plurality of mixing pieces, a connecting shaft is further coaxially arranged in the furnace body, and the connecting piece is arranged on the connecting shaft in a sleeving mode. The mixing pieces are arranged on the peripheral side of the connecting piece, the first air inlet is connected with the connecting piece through an air inlet channel, the connecting piece is provided with a plurality of connecting holes communicated with the interiors of the mixing pieces, the mixing pieces are provided with air outlet holes, the air inlet assembly comprises an air inlet cavity and a movable piece, the second air inlet is communicated with the air inlet cavity through an air inlet pipe, and the connecting shaft is sleeved with the air inlet cavity. The movable part is movably arranged in the gas inlet cavity, the gas inlet cavity and the movable part are provided with movably opposite through holes, a flow guide cavity is further formed in the furnace body, and the flow guide cavity is arranged in the circumferential direction of the inner wall of the furnace body in an attached mode.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas incineration treatment, and in particular to a tail gas combustion furnace. Background Art

[0002] The tail gas combustion furnace is a device used to treat waste gas generated in the industrial production process. After the waste gas enters the combustion chamber, it is mixed with the combustion aid, and then an oxidation reaction occurs under high temperature. The harmful substances in the waste gas (such as organic matter, sulfides, nitrogen oxides, etc.) are converted into harmless or low-harmful substances, thereby achieving the purpose of purifying the waste gas. In order to ensure that the harmful substances in the waste gas are fully converted and improve the treatment effect of the waste gas, the waste gas needs to be fully mixed with the combustion aid in the combustion furnace.

[0003] The patent document with the authorization announcement number CN116576471B discloses a heat storage type organic waste gas oxidation incinerator, including a combustion furnace wall, an air intake furnace wall, an air intake pipe and an exhaust gas intake pipe, and also includes an ignition mechanism and an oscillation mechanism, the ignition mechanism includes a driving rod, a lifting frame, a gas pipe and an ignition pipe, the driving rod is arranged inside the combustion furnace wall, the lifting frame is threadedly connected to the outside of the driving rod, the gas pipe is fixedly connected to the front side of the lifting frame, the ignition pipe is fixedly connected to the front side of the gas pipe, the oscillation mechanism includes an exhaust gas cavity plate, an air cavity plate, a vibrating top rod and an oscillating top plate, the oscillating top plate is fixedly connected to the inner side wall of the air intake furnace wall, and the vibrating top rod is slidably connected to the bottom surface of the oscillating top plate; The incinerator provided by the patent document treats waste gas by driving the driving motor to rotate the driving rod, thereby causing the lifting frame to move up and down, and the gas pipe and the ignition pipe move simultaneously with the lifting frame. The ignition pipe moves up and down between the waste gas chamber plates, and the waste gas ejected from the side of the waste gas chamber plate is mixed with the air ejected from the air chamber plate. The ignition pipe ignites the mixed gas, and by driving the lifting frame to drive the ignition pipe to move up and down, the mixed gas is fully burned and the waste gas treatment efficiency is improved.

[0004] In the process of industrial production, the tail gas combustion furnace is usually directly connected to the exhaust port of the production equipment so as to directly collect and treat the waste gas generated in the production process. When the production equipment is working, the amount of waste gas discharged varies due to factors such as the quality of raw materials, operating parameters, equipment status, and product output. When the combustion furnace treats the waste gas, different amounts of waste gas have different requirements for the amount of combustion aid charged. If the combustion aid is not charged enough, the harmful substances in the waste gas cannot be completely oxidized, affecting the treatment effect of the waste gas. In addition to increasing consumption and increasing operating costs, excessive charging of combustion aids will also cause the temperature in the combustion chamber to be too high, accelerate equipment aging and damage, and excessive temperature may also lead to an increase in the generation of nitrogen oxides in the flue gas, aggravating environmental pollution. The incinerator provided by the above patent document is not convenient for flexible adjustment of the amount of combustion aid charged according to the difference in the amount of waste gas generated. Summary of the invention

[0005] The present invention provides a tail gas combustion furnace, aiming to solve the problem that the combustion furnace in the related art is inconvenient to flexibly adjust the charging amount of the combustion aid according to the difference in the amount of exhaust gas generated, resulting in unsatisfactory exhaust gas treatment effect or accelerated equipment aging and damage.

[0006] The tail gas combustion furnace of the present invention comprises a furnace body, wherein the furnace body is provided with a first air inlet and a second air inlet, and the furnace body is also provided with a mixing mechanism, an air inlet assembly and a regulating member; The mixing mechanism comprises a connecting piece and a plurality of mixing pieces, a connecting shaft is coaxially arranged in the furnace body, the connecting piece is sleeved on the connecting shaft, each of the mixing pieces is arranged on the outer peripheral side of the connecting piece, the air inlet 1 is connected to the connecting piece through an air inlet passage, a plurality of connecting holes are arranged on the connecting piece, each of the connecting holes is connected to the inside of each of the mixing pieces in a one-to-one correspondence, the side facing the air inlet 1 is the front side, an air outlet hole connected to the inside of the mixing piece is arranged on the front side end surface of the mixing piece, and the exhaust gas is ejected from the air outlet hole to drive the mixing mechanism to rotate around the connecting shaft; The air intake assembly includes an air intake cavity and a movable part, the second air intake port is connected to the air intake cavity through an air intake pipe, the air intake cavity is sleeved on the outside of the connecting shaft, the movable part is movably arranged in the air intake cavity, the air intake cavity and the movable part have a through hole that is movably opposite to each other, and the adjusting part is used to adjust the relative position state of the through hole on the air intake cavity and the movable part; The furnace body is also provided with a flow guide cavity, which is arranged circumferentially in contact with the inner wall of the furnace body, the air inlet end of the flow guide cavity is located in front of the mixing element, the air outlet end of the flow guide cavity is located behind the mixing element, and an ignition element is provided behind the air outlet end of the flow guide cavity.

[0007] The beneficial effects are as follows: a mixing mechanism and an air intake assembly are provided in the furnace body, the mixing mechanism is used to promote gas disturbance in the furnace body after the exhaust gas is introduced, and to promote full mixing of the gas, the combustion aid is introduced into the furnace body through the air intake assembly, the mixing mechanism is connected to the air intake assembly through an adjusting member, while promoting gas disturbance, the mixing mechanism connects the air intake assembly with the furnace body through the adjusting member interval, so that the air intake assembly adjusts the frequency and number of connections with the furnace body according to the exhaust gas volume, so as to achieve the effect of adjusting the amount of combustion aid charged. The combustion furnace provided by this scheme is conducive to full mixing of the exhaust gas and the combustion aid in the furnace body, and is also convenient for flexibly adjusting the amount of combustion aid charged according to the exhaust gas volume, so that the amount of combustion aid charged matches the exhaust gas volume, promotes full oxidation of harmful substances in the exhaust gas, and improves the exhaust gas treatment effect.

[0008] Preferably, the adjusting member is rotatably sleeved on the connecting shaft, the rear end of the adjusting member is in contact with the connecting member, a stopper 1 is provided at the rear end of the adjusting member, and a stopper 2 is provided at the front end face of the connecting member, and the adjusting member is pushed to rotate when the connecting member rotates until the stopper 2 abuts against the stopper 1; The front end of the adjusting member is rotatably matched with the air inlet chamber, and the front end of the adjusting member is also provided with a protrusion 1, and the rear side of the movable member is provided with a protrusion 2. When the adjusting member rotates, the protrusion 2 is pushed to slide axially along the connecting shaft through the interval of the protrusion 1, and the movable member is elastically connected to the side wall of the air inlet chamber.

[0009] The beneficial effects are: flexible adjustment of the amount of combustion aid charged, and a large amount of exhaust gas discharged by the production equipment per unit time, so that the exhaust gas is ejected from the exhaust hole on the mixing element at a faster corresponding speed, thereby pushing the mixing element and the connecting element to rotate at a faster speed. The frequency of the adjusting element pushing the movable element to move to the through hole thereon relative to the through hole on the air inlet chamber per unit time increases, thereby achieving the purpose of increasing the number of times the combustion aid is ejected from the air inlet chamber, so as to better adapt to the amount of exhaust gas discharged by the production equipment and enhance the conversion effect of harmful substances in the exhaust gas.

[0010] Preferably, each of the mixing elements is rotatably matched with the connecting element, and each of the mixing elements is connected to the connecting element via a coil spring, and the jetting direction of each of the air outlets is inclined from rear to front towards the direction close to the axial direction of the furnace body.

[0011] The beneficial effect is that the outlet direction of the air outlet hole facilitates the exhaust gas to flow in the direction of the combustion aid release, promotes the mixing of the exhaust gas and the combustion aid in the space in front of the mixing mechanism, and improves the mixing effect of the combustion aid and the exhaust gas.

[0012] Preferably, a driving mechanism is also provided in the furnace body, and the driving mechanism includes a driving shaft, a fixing part and a guiding part. The driving shaft is coaxially arranged with the connecting shaft, and a spiral guiding groove is provided on the driving shaft. The front end of the driving shaft is relatively fixed to the rear end of the connecting shaft, and the rear end of the driving shaft is rotatably matched with the fixing part. The fixing part is fixed relative to the inner wall of the furnace body, the guiding part is parallel to the driving shaft, and the rear end of the guide part is fixed to the fixing part. The connecting part is slidably matched with the guiding part, and a slider is provided on the inner side of the connecting part, and the slider is movably matched with the guide groove.

[0013] Preferably, a connecting portion is provided between the connecting shaft and the driving shaft, the diameter of the connecting portion is smaller than the diameters of the connecting shaft and the driving shaft, and an elastic structure is provided on the connecting portion. The elastic structure is sleeved on the connecting portion and abuts against the front end of the slider to push the slider to move into the guide groove when the slider is opposite to the guide groove.

[0014] The beneficial effects are: it is convenient to clean the impurities attached to the inner wall of the combustion furnace after it is working, and it is also convenient to adjust the different working states of the mixing mechanism. When the mixing mechanism is separated from the driving shaft, the exhaust gas can be introduced and mixed. When the mixing mechanism moves to the driving shaft, it can move along the axial direction of the furnace body under the rotation of the driving shaft and clean the side walls of the furnace body.

[0015] Preferably, a baffle is further provided in the furnace body, the edge of the baffle is in contact with the inner wall of the furnace body, the baffle is located at the front side of the air inlet cavity, the connecting shaft is provided with a gear on the front side of the baffle, the driving mechanism also includes a driving source and a driving gear, the driving source is installed on the front side of the baffle, the driving end of the driving source is connected to the driving gear, and the driving gear is meshed with the gear.

[0016] Preferably, a collecting chamber is further provided in the furnace body, and the collecting chamber is located at the lower end of the rear side of the furnace body.

[0017] Preferably, the side wall of the air inlet cavity opposite to the inner wall of the furnace body is cylindrical, the shape of the movable part matches the air inlet cavity, and the movable part slides in accordance with the cylindrical side wall of the air inlet cavity.

[0018] Preferably, a plurality of through holes are circumferentially provided at the gas outlet end of the guide cavity, and the gas outlet direction of each through hole is inclined from front to back toward the axial direction of the furnace body, and the width of the gas outlet end of the guide cavity decreases from front to back, and the ignition ring is arranged on the rear side of the gas outlet end of the guide cavity.

[0019] The beneficial effects are: it facilitates the mixed gas to flow to the rear side of the mixing mechanism, the through holes at the outlet end of the guide cavity promote the discharge of the mixed gas to the rear side of the mixing mechanism, and the ring-arranged ignition component provides the high-temperature environment required for the exhaust gas reaction, promotes the reaction of the mixed gas in a high-temperature environment, and improves the conversion effect of harmful substances in the exhaust gas.

[0020] Preferably, two independent air ducts are arranged in the air inlet channel, and two independent flow guide channels are arranged in the connecting piece. The two air ducts are independently connected to the two flow guide channels, and the two flow guide channels are connected to different mixing pieces.

[0021] The beneficial effects of the present invention are: (1) A mixing mechanism and an air intake assembly are provided in the furnace body. The mixing mechanism is used to promote gas disturbance in the furnace body after the exhaust gas is introduced, and to promote full mixing of the gas. The combustion aid is introduced into the furnace body through the air intake assembly. The mixing mechanism is connected to the air intake assembly through an adjusting member. While promoting gas disturbance, the mixing mechanism connects the air intake assembly with the furnace body through the adjusting member interval, so that the air intake assembly adjusts the frequency and number of connections with the furnace body according to the exhaust gas volume, so as to achieve the effect of adjusting the amount of combustion aid charged. The combustion furnace provided by this scheme is conducive to full mixing of the exhaust gas and the combustion aid in the furnace body, and is also convenient for flexibly adjusting the amount of combustion aid charged according to the exhaust gas volume, so that the amount of combustion aid charged matches the exhaust gas volume, promotes full oxidation of harmful substances in the exhaust gas, and improves the exhaust gas treatment effect.

[0022] (2) It is convenient to clean the impurities attached to the inner wall of the combustion furnace after it is working, and it is also convenient to adjust the different working states of the mixing mechanism. When the mixing mechanism is separated from the driving shaft, the exhaust gas can be introduced and mixed. When the mixing mechanism moves to the driving shaft, it can move along the axial direction of the furnace body under the rotation of the driving shaft and clean the side wall of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the combustion furnace in the present invention.

[0024] Figure 2 It is a schematic diagram of the state of the mixing mechanism when no exhaust gas is introduced into the combustion furnace of the present invention.

[0025] Figure 3 It is a schematic diagram of the state of the mixing mechanism when exhaust gas is introduced into the combustion furnace of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the connection between the mixing mechanism and the feeding assembly in the present invention.

[0027] Figure 5 It is a structural schematic diagram of the present invention in which the connecting piece is connected to the connecting part through an elastic structure.

[0028] Reference numerals: 1. Furnace body; 11. Air inlet 1; 111. Air inlet channel; 12. Air inlet 2; 121. Air inlet pipe; 13. Air outlet; 14. Collecting chamber; 15. Baffle; 2. Connecting shaft; 21. Gear; 22. Driving shaft; 221. Guide groove; 23. Fixing member; 24. Guide member; 3. Connecting member; 31. Mixing member; 32. Air outlet; 33. Block 2; 34. Sliding block; 35. Elastic structure; 4. Adjusting member; 41. Block 1; 42. Bump 1; 5. Air inlet chamber; 51. Movable member; 511. Bump 2; 6. Guide chamber; 61. Ignition member. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 3 As shown, an exhaust gas combustion furnace of the present invention comprises a furnace body 1, and the furnace body 1 is provided with an air inlet 11, an air inlet 2 12 and an air outlet 13. The air inlet 11 is used for introducing exhaust gas into the furnace body 1, and the air inlet 11 can be directly connected to the exhaust port of relevant production equipment, and the air inlet 2 12 is used for introducing combustion aid into the furnace body 1. An ignition element 61 is also provided in the furnace body 1. After the combustion aid and the exhaust gas are mixed in the furnace body 1, the ignition element 61 ignites the mixed gas, and the flue gas after the mixed gas is fully burned in the furnace body 1 is discharged from the air outlet 13 and enters a subsequent treatment system (such as a dust collector, a desulfurization tower, a denitrification tower, etc.).

[0031] In order to fully mix the exhaust gas and the combustion aid in the furnace body 1, and also to flexibly adjust the charging amount of the combustion aid so that the charging amount of the combustion aid matches the exhaust gas amount, promote the full oxidation of harmful substances in the exhaust gas, and improve the exhaust gas treatment effect, a mixing mechanism and an air intake assembly are also provided in the furnace body 1. The mixing mechanism is used to promote gas disturbance in the furnace body 1 after the exhaust gas is introduced so that the gas is fully mixed. The combustion aid is introduced into the furnace body 1 through the air intake assembly, and the mixing mechanism is connected to the air intake assembly through the regulating member 4. While promoting gas disturbance, the mixing mechanism opens the connection between the air intake assembly and the furnace body 1 through the regulating member 4 at intervals, so that the air intake assembly adjusts the frequency and number of connections with the furnace body 1 according to the exhaust gas amount, so as to achieve the effect of adjusting the charging amount of the combustion aid.

[0032] The mixing mechanism includes a connecting member 3 and a plurality of mixing members 31. A connecting shaft 2 is provided in the furnace body 1. The connecting shaft 2 is coaxially arranged with the furnace body 1. The connecting member 3 is rotatably sleeved on the connecting shaft 2. Each mixing member 31 is provided on the outer peripheral side of the connecting member 3. A cavity is formed inside the mixing member 31. The end facing the furnace body 1 where the air inlet 11 is provided is the front side. An air outlet hole 32 is provided on the front side end surface of each mixing member 31. The air outlet hole 32 on the mixing member 31 is connected to the internal cavity of the mixing member 31. The air outlet direction of each air outlet hole 32 is inclined from the rear to the front in a direction close to the axial direction. An air inlet channel 111 is also provided in the furnace body 1. One end of the air inlet channel 111 is connected to the air inlet 11. The air inlet channel 111 It extends into the interior of the connecting shaft 2, and its other end is connected to the interior of the connecting piece 3. The connecting piece 3 is provided with a plurality of connecting holes, each of which is connected to the internal cavity of each mixing piece 31. The exhaust gas enters the air inlet channel 111 from the air inlet port 11, and enters the connecting piece 3 through the air inlet channel 111, and then enters each mixing piece 31 through the connecting holes on the connecting piece 3, and is finally ejected from the air outlet 32 ​​on the mixing piece 31. When the exhaust gas is ejected from the air outlet 32 ​​on the front end face of the mixing piece 31, the mixing piece 31 is pushed to rotate, and the connecting piece 3 is driven to rotate around the connecting shaft 2. While the mixing piece 31 rotates, the exhaust gas is ejected into the front space thereof, which effectively promotes the flow of gas in the front space of the mixing piece 31.

[0033] In order to further increase the flow intensity of the gas in front of the mixing element 31 when the exhaust gas is charged into the furnace body 1 and promote the mixing of the exhaust gas and the combustion aid, each mixing element 31 is rotatably connected to the connecting element 3 through a coil spring. Since the exhaust direction of each air outlet 32 ​​is inclined from the back to the front in the axial direction close to the axial direction, when the exhaust gas is ejected from the air outlet 32, it pushes the mixing element 31 to rotate around the axial direction of the connecting shaft 2, and also promotes the mixing element 31 to rotate relative to the connecting element 3. The mixing element 31 can be a fan-shaped plate, and the state of the mixing element 31 when no exhaust gas is introduced is its initial state. In the initial state, the plane formed by each mixing element 31 is parallel to the axial plane of the furnace body 1. When the exhaust gas is charged, each mixing element 31 rotates axially relative to the connecting shaft 2 and also rotates relative to the connecting element 3. When each mixing element 31 rotates in a state inclined relative to the axial plane of the furnace body 1, the flow of the gas in front of the mixing element 31 is further promoted.

[0034] like Figure 4As shown, the air intake assembly includes an air intake chamber 5 and a movable member 51. A baffle 15 and an air intake pipe 121 are also provided in the furnace body 1. The air intake port 12 is connected to the air intake chamber 5 through the air intake pipe 121. The baffle 15 is sleeved on the front side of the air intake chamber 5. The edge of the baffle 15 fits with the inner wall of the furnace body 1. The air intake chamber 5 is cylindrical with closed ends. The movable member 51 is movably arranged in the air intake chamber 5. The movable member 51 is provided with a cylindrical side wall that movably fits with the side wall of the air intake chamber 5. The air intake chamber 5 and the movable member 5 1 is provided with through holes, and when the through holes on the air inlet chamber 5 and the movable member 51 are opposite to each other, the combustion-supporting agent in the air inlet chamber 5 is sprayed out from the through holes, and the front end of the movable member 51 is connected to the front side wall of the air inlet chamber 5 through an elastic member, and the elastic member includes but is not limited to a spring and an elastic telescopic rod. When the elastic member is naturally stretched, the through holes on the air inlet chamber 5 and the movable member 51 are staggered, and the combustion-supporting agent cannot be sprayed out from the through holes. The adjusting member 4 is used to adjust the relative position of the movable member 51 and the air inlet chamber 5.

[0035] The adjusting member 4 is cylindrical and is movably sleeved on the connecting shaft 2. The front end of the adjusting member 4 is rotatably matched with the rear end of the air inlet chamber 5. The rear end of the adjusting member 4 is movably fitted with the front end face of the connecting member 3. A stopper 41 is fixed to the rear end of the adjusting member 4. A stopper 2 33 is provided on the front end face of the connecting member 3. When the exhaust gas is ejected from the air outlet 32 ​​on the mixing member 31 to drive the mixing member 31 to rotate, the connecting member 3 rotates with the mixing member 31. When the stopper 2 33 abuts against the stopper 41, the connecting member 3 drives the adjusting member 4 rotates synchronously, a protrusion 1 42 is further provided at the front end of the adjusting member 4, and a protrusion 2 511 is provided at the rear end of the movable member 51. When the adjusting member 4 rotates, the protrusion 1 42 contacts with the protrusion 2 511 at intervals. When the protrusion 1 42 contacts with the protrusion 2 511, the movable member 51 is pushed to move forward and squeeze the elastic member to store force, so that the through hole on the movable member 51 is opposite to the through hole on the air inlet chamber 5, and the combustion-supporting agent smoothly enters the furnace body 1. When the protrusion 1 42 is staggered with the protrusion 2 511, the movable member 51 is reset under the elastic force of the elastic member.

[0036] With the cooperation of the adjusting member 4, it can be ensured that during the process of exhaust gas entering the furnace body 1, the combustion aid in the air inlet chamber 5 enters the furnace body 1 at intervals and is fully mixed with the flowing exhaust gas. In addition, since the air inlet 11 is directly connected to the exhaust port of the production equipment, if the amount of exhaust gas discharged by the production equipment per unit time is large, the corresponding speed of the exhaust gas ejected from the air outlet 32 ​​on the mixing member 31 is faster, thereby pushing the mixing member 31 and the connecting member 3 to rotate at a faster speed. The frequency of the adjusting member 4 pushing the movable member 51 to move to the through hole thereon relative to the through hole on the air inlet chamber 5 per unit time increases, and the number of times the combustion aid is ejected from the air inlet chamber 5 increases, so as to better adapt to the amount of exhaust gas discharged by the production equipment and enhance the conversion effect of harmful substances in the exhaust gas.

[0037] A guide chamber 6 is also provided in the furnace body 1. The guide chamber 6 is circumferentially arranged in contact with the inner wall of the furnace body 1. During the operation of treating the exhaust gas, the air inlet end of the guide chamber 6 is located at the front side of the mixing element 31, and the air outlet end of the guide chamber 6 is located at the rear side of the mixing element 31. The space in front of the mixing element 31 is used to mix the exhaust gas and the combustion aid. The gas pressure in the space in front of the mixing element 31 is relatively high. The mixed gas enters the guide chamber 6 from the air inlet end of the guide chamber 6 and is discharged from the air outlet end of the guide chamber 6. A plurality of through holes are circumferentially provided at the air outlet end of the guide chamber 6. The air outlet direction of each through hole is inclined from front to rear toward the axial direction of the furnace body 1. An ignition piece 61 is provided at the rear side of the air outlet end of the guide chamber 6. The ignition piece 61 is annular and is used to ignite the mixed gas discharged from the guide chamber 6.

[0038] There are differences in the treatment requirements of different exhaust gases. Some exhaust gases can only fully react with the combustion aid under the action of a catalyst in a high-temperature environment. In order to achieve the treatment of such wastes, the air inlet channel 111 includes two independent air ducts, one air duct is connected to the exhaust port of the production equipment, and the other air duct is connected to the catalyst introduction equipment. Two independent guide channels are provided in the connecting piece 3, and the two air ducts are independently connected to the two guide channels. The mixing pieces 31 connected by the two guide channels are different. When treating some exhaust gases that require catalytic reactions, the exhaust gas and the catalyst can be transported separately through two independent air ducts. After the exhaust gas and the catalyst are ejected from the air outlet 32 ​​on the mixing piece 31, they can be quickly mixed under the rotation of the mixing piece 31, thereby improving the catalytic effect of the catalyst. In order to further improve the mixing effect of the catalyst and the exhaust gas, the mixing piece 31 used to release the catalyst is not adjacent to each other.

[0039] After the exhaust gas is burned, a certain amount of impurities will adhere to the inner wall of the furnace body 1, forming a relatively closed space inside the furnace body 1. It is difficult to clean the inner wall by disassembly and assembly. In order to facilitate the timely cleaning of the inner wall of the furnace body 1 after the exhaust gas is burned, a driving mechanism is also provided in the furnace body 1. The driving mechanism is used to drive the mixing mechanism to move back and forth in the furnace body 1, and to make the edge of the mixing element 31 move in contact with the inner wall of the furnace body 1, so as to promote the impurities on the inner wall of the furnace body 1 to separate from the furnace body 1.

[0040] like Figure 2 , Figure 3 and Figure 5As shown, a driving mechanism is also provided in the furnace body 1, and the driving mechanism includes a driving shaft 22, a fixing member 23 and a guiding member 24. The driving shaft 22 is coaxially arranged with the connecting shaft 2, and a spiral guiding groove 221 is provided on the driving shaft 22. The front end of the driving shaft 22 is relatively fixed to the rear end of the connecting shaft 2, and the rear end of the driving shaft 22 is rotatably matched with the fixing member 23. The fixing member 23 is fixed relative to the inner wall of the furnace body 1, and the guiding member 24 is parallel to the driving shaft 22. The rear end of the guiding member 24 is fixed to the fixing member 23. The connecting member 3 is slidably matched with the guiding member 24. A sliding block 34 is provided on the inner side of the connecting member 3. A connecting portion is provided between the connecting shaft 2 and the driving shaft 22, and the diameter of the connecting portion is smaller than that of the connecting shaft 2 and the driving shaft 2. 2, an elastic structure 35 is provided on the connecting portion, the elastic structure 35 is elastically connected to the connecting member 3, and abuts against the front end of the slider 34. When the driving shaft 22 rotates to the guide groove 221 and the slider 34 is opposite, the elastic structure 35 pushes the slider 34 into the guide groove 221, and the driving shaft 22 continues to rotate. The mixing mechanism is limited by the guide member 24 and does not rotate with the driving shaft 22. It moves along the axial direction of the driving shaft 22 and cleans the inner wall of the furnace body 1. In order to facilitate the collection of scraped impurities, a collecting chamber 14 is also provided in the furnace body 1. The collecting chamber 14 is located at the lower end of the rear side of the furnace body 1, and the collecting chamber 14 and the furnace body 1 are detachable and matched, so as to regularly clean the impurities collected in the collecting chamber 14.

[0041] The connecting shaft 2 is fixedly sleeved with a gear 21 on the front side of the baffle 15. The driving mechanism also includes a driving source and a driving gear. The driving source is installed on the front side of the baffle 15. The driving end of the driving source is connected to the driving gear, and the driving gear is meshed with the gear 21. When the driving source is working, the gear 21 is driven to rotate through the driving gear, thereby driving the connecting shaft 2 and the driving shaft 22 to rotate.

[0042] The elastic structure 35 includes a fixed part and a sliding part, both of which are annular. The fixed part is fixed relative to the connecting part, and the sliding part is slidably mounted on the connecting part. The fixed part and the sliding part can be connected by an elastic rod or a spring, and the elastic rod or the spring is in a force storage state.

[0043] The tail gas combustion furnace provided by the present invention is convenient for adjusting the charging amount of the combustion aid according to the change of the exhaust gas volume, which helps to promote the full conversion of harmful substances in the exhaust gas and improve the treatment effect of the exhaust gas. At the same time, the impurities attached to the side wall of the furnace body are cleaned in time after the exhaust gas treatment operation, thereby reducing the aging and damage rate of the equipment during the exhaust gas treatment process and extending the service life of the equipment.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A tail gas combustion furnace, comprising a furnace body (1), the furnace body (1) being provided with an air inlet 1 (11) and an air inlet 2 (12), characterized in that: The furnace body (1) is also provided with a mixing mechanism, an air intake assembly and an adjusting member (4); the mixing mechanism comprises a connecting member (3) and a plurality of mixing members (31); a connecting shaft (2) is coaxially provided in the furnace body (1); the connecting member (3) is sleeved on the connecting shaft (2); each mixing member (31) is provided on the outer peripheral side of the connecting member (3); the air intake port (11) is connected to the connecting member (3) via an air intake passage (111); a plurality of connecting holes are provided on the connecting member (3); each connecting hole is connected to the interior of each mixing member (31) in a one-to-one correspondence; the side facing the air intake port (11) is the front side; an air outlet hole (32) connected to the interior of the mixing member (31) is provided on the front side end surface; exhaust gas is ejected from the air outlet hole (32) to drive the mixing mechanism to rotate around the connecting shaft (2); the air intake port (11) is connected to the connecting member (3) via an air intake passage (111); a plurality of connecting holes are provided on the connecting member (3); each connecting hole is connected to the interior of each mixing member (31) in a one-to-one correspondence; the side facing the air intake port (11) is the front side; an air outlet hole (32) connected to the interior of the mixing member (31) is provided on the front side end surface of the mixing member (31); exhaust gas is ejected from the air outlet hole (32) to drive the mixing mechanism to rotate around the connecting shaft (2); The assembly comprises an air intake chamber (5) and a movable part (51); the second air intake port (12) is connected to the air intake chamber (5) through an air intake pipe (121); the air intake chamber (5) is sleeved on the outside of the connecting shaft (2); the movable part (51) is movably arranged in the air intake chamber (5); the air intake chamber (5) and the movable part (51) have through holes that are movably opposed to each other; the adjusting part (4) is used to adjust the relative position state of the through holes on the air intake chamber (5) and the movable part (51); a guide chamber (6) is further arranged in the furnace body (1); the guide chamber (6) is arranged in a circumferential direction with respect to the inner wall of the furnace body (1); the air intake end of the guide chamber (6) is located in front of the mixing part (31); the air outlet end of the guide chamber (6) is located in the rear of the mixing part (31); and an ignition part (61) is arranged on the rear side of the air outlet end of the guide chamber (6).

2. The tail gas combustion furnace according to claim 1, characterized in that: The adjusting member (4) is rotatably sleeved on the connecting shaft (2), the rear end of the adjusting member (4) is in contact with the connecting member (3), a first stopper (41) is provided at the rear end of the adjusting member (4), and a second stopper (33) is provided at the front end face of the connecting member (3), and when the connecting member (3) rotates until the second stopper (33) abuts against the first stopper (41), the adjusting member (4) is pushed to rotate; The front end of the adjusting member (4) is rotatably matched with the air inlet chamber (5), the front end of the adjusting member (4) is further provided with a first protrusion (42), and the rear side of the movable member (51) is provided with a second protrusion (511). When the adjusting member (4) rotates, the second protrusion (511) is pushed to slide along the axial direction of the connecting shaft (2) through the interval of the first protrusion (42), and the movable member (51) is elastically connected to the side wall of the air inlet chamber (5).

3. The tail gas combustion furnace according to claim 1, characterized in that: Each mixing element (31) is rotationally matched with the connecting element (3), and each mixing element (31) is connected to the connecting element (3) via a coil spring. The jetting direction of each air outlet (32) is inclined from the back to the front towards the axial direction of the furnace body (1).

4. The tail gas combustion furnace according to claim 1, characterized in that: A driving mechanism is also provided in the furnace body (1), the driving mechanism comprising a driving shaft (22), a fixing member (23) and a guiding member (24); the driving shaft (22) is coaxially arranged with the connecting shaft (2); a spiral guiding groove (221) is provided on the driving shaft (22); the front end of the driving shaft (22) is relatively fixed to the rear end of the connecting shaft (2); the rear end of the driving shaft (22) is rotatably matched with the fixing member (23); the fixing member (23) is fixed relative to the inner wall of the furnace body (1); the guiding member (24) is parallel to the driving shaft (22); the rear end of the guiding member (24) is fixed to the fixing member (23); the connecting member (3) is slidably matched with the guiding member (24); a sliding block (34) is provided on the inner side of the connecting member (3); and the sliding block (34) is movably matched with the guiding groove (221).

5. The tail gas combustion furnace according to claim 4, characterized in that: A connecting portion is provided between the connecting shaft (2) and the driving shaft (22); the diameter of the connecting portion is smaller than the diameters of the connecting shaft (2) and the driving shaft (22); an elastic structure (35) is provided on the connecting portion; the elastic structure (35) is sleeved on the connecting portion and abuts against the front end of the sliding block (34) so ​​as to push the sliding block (34) to move into the guiding groove (221) when the sliding block (34) is opposite to the guiding groove (221).

6. The tail gas combustion furnace according to claim 4, characterized in that: A baffle (15) is further provided in the furnace body (1), the edge of the baffle (15) being in contact with the inner wall of the furnace body (1), the baffle (15) being located at the front side of the air inlet cavity (5), the connecting shaft (2) being sleeved with a gear (21) at the front side of the baffle (15), the driving mechanism further comprising a driving source and a driving gear, the driving source being installed at the front side of the baffle (15), the driving end of the driving source being connected to the driving gear, and the driving gear being meshed with the gear (21).

7. The tail gas combustion furnace according to claim 4, characterized in that: A collecting chamber (14) is also provided in the furnace body (1), and the collecting chamber (14) is located at the lower end of the rear side of the furnace body (1).

8. The tail gas combustion furnace according to claim 1, characterized in that: The side wall of the air intake cavity (5) opposite to the inner wall of the furnace body (1) is cylindrical, the shape of the movable member (51) matches the air intake cavity (5), and the movable member (51) slides in contact with the cylindrical side wall of the air intake cavity (5).

9. The tail gas combustion furnace according to claim 1, characterized in that: A plurality of through holes are provided in the circumferential direction of the gas outlet end of the guide cavity (6); the gas outlet direction of each through hole is inclined from front to rear towards the axial direction of the furnace body (1); the width of the gas outlet end of the guide cavity (6) decreases from front to rear; and the ignition element (61) is arranged in a ring at the rear side of the gas outlet end of the guide cavity (6).

10. The tail gas combustion furnace according to claim 1, characterized in that: Two independent air ducts are arranged in the air inlet channel (111), and two independent flow guide channels are arranged in the connecting piece (3). The two air ducts are independently connected to the two flow guide channels, and the two flow guide channels are connected to different mixing pieces (31).

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