Ceramic sintering furnace combustion waste gas treatment and purification system and method

Abstract

The invention relates to the technical field of waste gas treatment, and discloses a ceramic sintering furnace combustion waste gas treatment and purification system and method.The ceramic sintering furnace combustion waste gas treatment and purification system comprises a deacidification tower body, a gas inlet pipe, a gas outlet pipe, a turbulent flow channel, a reducing channel, an air outlet channel, a sealing sleeve, an arc-shaped cover and a control component; and when the sintering furnace starts, stops and regulates temperature to cause increase of the waste gas flow, the control part drives the arc-shaped cover to slide upwards and drives the inner diameter of the variable-diameter channel to increase, and when the sintering furnace starts, stops and regulates temperature to cause decrease of the waste gas flow, the control part drives the arc-shaped cover to slide downwards and drives the inner diameter of the variable-diameter channel to decrease. Through the linkage design of the variable-diameter channel and the arc-shaped cover, the system can automatically adjust the inner diameter of the variable-diameter channel according to the waste gas flow, the problem that in the prior art, the working condition adaptability is insufficient is effectively solved, and efficient purification and stable operation of waste gas are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological protection projects, and particularly to a ceramic sintering furnace combustion waste gas treatment and purification system and method. Background Art

[0002] The combustion waste gas generated by a ceramic sintering furnace during the high-temperature sintering process contains pollutants such as high-concentration nitrogen oxides, sulfides, and hydrogen fluoride. Currently, dry denitration integrated equipment is generally used for purification in the environmental protection project construction industry and the ecological protection project construction industry.

[0003] The dry denitration integrated purification system in the prior art adopts a standardized five-stage process: first, pre-dust the high-temperature waste gas through a cyclone dust collector; then, quickly cool it through a two-fluid atomization quenching tower to meet the SCR temperature window; then inject ammonia and force diffusion and mixing through a straight pipe section of ≥5m; the mixed waste gas enters the vanadium tungsten titanium catalyst layer to complete the denitration reaction; finally, spray the deacidifying agent Ca(OH)2 powder into the empty tower structure deacidifying tower to remove acidic gases, supplemented by activated carbon adsorption and bag dust removal to achieve deep purification.

[0004] However, the deacidifying tower in the prior art adopts a simple empty tower design. When the waste gas flow rate changes due to the start-up, shutdown, and temperature adjustment of the sintering furnace, the gas flow velocity inside the deacidifying tower will also be unstable. When the flow rate increases, the gas flow velocity speeds up, and the contact time between the deacidifying agent Ca(OH)2 powder and the waste gas is further shortened, resulting in a significant decrease in the deacidification efficiency; when the flow rate decreases, although the contact time may be extended, problems such as uneven gas flow distribution and local powder accumulation are likely to occur, affecting the continuous and stable operation of the system. Summary of the Invention

[0005] In view of the problem in the prior art that when the waste gas flow rate changes due to the start-up, shutdown, and temperature adjustment of the sintering furnace, the gas flow velocity inside the deacidifying tower will also be unstable, a ceramic sintering furnace combustion waste gas treatment and purification system and method are proposed.

[0006] On the one hand, the present application provides a ceramic sintering furnace combustion waste gas treatment and purification system, and its purpose is to: solve the problem of insufficient adaptability to working conditions in the prior art by adding a flow disturbance structure and an adaptive variable-diameter channel inside the deacidifying tower body, and achieve efficient purification and stable operation of waste gas.

[0007] The technical solution of the present invention is as follows: A combustion exhaust gas treatment and purification system for a ceramic sintering furnace, comprising: a deacidification tower body; an intake pipe disposed at the bottom of the deacidification tower body; an outlet pipe disposed at the top of the deacidification tower body; a turbulence channel disposed on the inner wall of the deacidification tower body; a variable diameter channel disposed inside the deacidification tower body; an air outlet channel disposed at the top of the variable diameter channel and communicating with the outlet pipe, and the top of the variable diameter channel is in sliding fit with the bottom surface of the air outlet channel; a sealing sleeve located between the variable diameter channel and the annular part for sealing the gap between the variable diameter channel and the annular part; an arc-shaped cover slidably disposed at the bottom of the variable diameter channel, and the arc-shaped cover is an inverted arc-shaped plate; a control component disposed on the arc-shaped cover, and when the start-stop and temperature adjustment of the sintering furnace cause the exhaust gas flow rate to increase, the control component drives the arc-shaped cover to slide upward and drives the inner diameter of the variable diameter channel to increase, and when the start-stop and temperature adjustment of the sintering furnace cause the exhaust gas flow rate to decrease, the control component drives the arc-shaped cover to slide downward and drives the inner diameter of the variable diameter channel to decrease.

[0008] Further, the variable diameter channel is formed by alternately connecting a number of movable plates and corrugated plates with equal numbers.

[0009] Further, a connecting rod is rotatably disposed at the top of the arc-shaped cover, and the top end of the connecting rod is rotatably connected to the bottom end of the movable plate. The connecting rod is located inside the sealing sleeve. A sliding rod is disposed on the outer wall of the movable plate, and a sliding groove for the sliding rod to slide is opened on the inner wall of the deacidification tower body.

[0010] Further, the sealing sleeve includes a folding part disposed on the top surface of the annular part, a sleeving part sleeved on the outside of the variable diameter channel, and a shielding part disposed on the inner wall of the sleeving part.

[0011] Further, a turbulence member is disposed inside the turbulence channel through a mounting frame, and the turbulence member is located directly below the arc-shaped cover. The bottom end of the turbulence member is tapered; a number of spiral guide vanes are disposed on the outer wall of the turbulence member, and the inclination angle of the top end of the spiral guide vane is larger than the inclination angle of the bottom end of the spiral guide vane.

[0012] Further, the turbulence channel includes a converging part, a conical part, and an annular part that communicate with each other.

[0013] Further, a frustum block is disposed on the bottom surface of the arc-shaped cover, and the frustum block slides inside the turbulence member.

[0014] Further, a positioning column is disposed on the bottom surface of the frustum block. A first elastic member located inside the turbulence member is sleeved on the outer wall of the frustum block, and a second elastic member located inside the turbulence member is sleeved on the outer wall of the positioning column.

[0015] Further, a limiting block is disposed on the inner wall of the turbulence member, and a limiting groove for the limiting block to slide is opened on the outer wall of the frustum block.

[0016] Furthermore, the present invention also provides a method for treating and purifying combustion waste gas from a ceramic sintering furnace, comprising the following steps: step 1: pre-dust the high-temperature waste gas generated by the ceramic sintering furnace through a cyclone dust collector; step 2: pass the pre-dust-removed waste gas into a double-fluid atomizing quenching tower for rapid cooling; step 3: inject ammonia into the quenched waste gas; step 4: pass the waste gas mixed with ammonia into a reaction device provided with a vanadium tungsten titanium catalyst layer to complete the denitration reaction; step 5: pass the denitrated waste gas into an air inlet pipe, and at the same time spray the waste gas from the bottom of the deacidification tower body. After the deacidifying agent Ca(OH)2 powder is added, the waste gas enters the deacidifying tower body and first hits the spoiler to achieve uniform airflow diffusion, then flows through the spiral guide blades to form a vortex, so that the waste gas and the deacidifying agent Ca(OH)2 powder are further mixed, and then hits the arc cover to achieve secondary turbulence and efficient deacidification; Step six: The control component can automatically adjust the inner diameter of the variable diameter channel to stabilize the flow rate according to the waste gas flow, and the waste gas flows out from the outlet pipe after passing through the variable diameter channel and the air outlet channel; Step seven: The waste gas flowing out of the outlet pipe is assisted by activated carbon adsorption and bag dust removal to achieve deep purification.

[0017] Beneficial effects of the present invention: Through the linkage design of the variable diameter channel and the arc cover, the system can automatically adjust the inner diameter of the variable diameter channel according to the exhaust gas flow rate: when the flow rate increases, the exhaust gas impacts the arc cover to slide up and open the variable diameter channel, reducing the flow rate to extend the gas-solid contact time and improve the utilization rate of the deacidifying agent Ca(OH)2 powder; when the flow rate decreases, the first elastic member and the second elastic member drive the arc cover to slide down and contract the variable diameter channel, increasing the flow rate to avoid powder accumulation, effectively solving the problem of insufficient adaptability of the existing technology to working conditions, achieving efficient purification and stable operation of exhaust gas, and efficiently meeting the purification standards of the current environmental protection engineering construction industry and the ecological protection engineering construction industry.

[0018] Through the variable inclination design of the spoiler and the spiral guide vane (small inclination at the bottom to start the swirl, large inclination at the top to enhance turbulence), the exhaust gas can fully react with the deacidifying agent Ca(OH)2 powder in the swirl. Combined with the secondary spoiler reflection vortex of the arc cover, the deacidification efficiency is further improved compared with the traditional empty tower design, which effectively copes with the flow fluctuation caused by the start-up and shutdown temperature adjustment of the sintering furnace and ensures the continuous and stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a flow chart of the purification system of the present invention; Figure 2 It is a stereoscopic diagram of the deacidification tower body in the present invention; Figure 3 It is a cross-sectional view of the deacidification tower body in the present invention; Figure 4 It is a stereoscopic diagram of the variable diameter channel in the present invention; Figure 5 It is a schematic diagram of the installation of the connecting rod in the present invention; Figure 6 Schematic installation diagram of the variable-diameter channel in the present invention; Figure 7 Schematic installation diagram of the limit block in the present invention; Figure 8 Cross-sectional view of the flow spoiler in the present invention; Figure 9 Stereogram of the sealing sleeve in the present invention.

[0020] In the figure: 1. Deacidification tower body; 2. Air inlet pipe; 3. Turbulence channel; 4. Confluence part; 5. Conical part; 6. Annular part; 7. Flow spoiler; 8. Mounting frame; 9. Spiral guide vane; 10. Arc-shaped cover; 11. Variable-diameter channel; 12. Limit block; 13. First elastic member; 14. Second elastic member; 15. Positioning column; 16. Connecting rod; 17. Sealing sleeve; 18. Movable plate; 19. Corrugated plate; 20. Slide bar; 21. Chute; 22. Limit groove; 23. Folding part; 24. Sleeve part; 25. Shielding part; 26. Air outlet channel; 27. Air outlet pipe; 28. Frustum block. Detailed implementation manners

[0021] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0022] Example 1, referring to Figures 1 - 9 , which is the first embodiment of the present invention, provides: A ceramic sintering furnace combustion waste gas treatment and purification system, including a deacidification tower body 1; an air inlet pipe 2, the air inlet pipe 2 is fixedly installed at the bottom of the deacidification tower body 1; an air outlet pipe 27, the air outlet pipe 27 is fixedly installed at the top of the deacidification tower body 1; a turbulence channel 3, the turbulence channel 3 is fixedly installed on the inner wall of the deacidification tower body 1; a variable-diameter channel 11, the variable-diameter channel 11 is arranged inside the deacidification tower body 1; an air outlet channel 26, the air outlet channel 26 is fixedly installed at the top of the variable-diameter channel 11 and is in communication with the air outlet pipe 27, and the top of the variable-diameter channel 11 is in sliding fit with the bottom surface of the air outlet channel 26; a sealing sleeve 17, the sealing sleeve 17 is located between the variable-diameter channel 11 and the annular part 6 for sealing the gap between the variable-diameter channel 11 and the annular part 6; an arc-shaped cover 10, the arc-shaped cover 10 is slidably arranged at the bottom of the variable-diameter channel 11, and the arc-shaped cover 10 is an inverted arc-shaped plate; a control component, the control component is arranged on the arc-shaped cover 10.

[0023] Specifically, the waste gas flow channel of the deacidification tower body 1 is composed of the air inlet pipe 2, the turbulence channel 3, the sealing sleeve 17, the variable-diameter channel 11, the air outlet channel 26 and the air outlet pipe 27.

[0024] When the start-up, shutdown and temperature adjustment of the sintering furnace cause changes in the waste gas flow rate, the gas flow velocity inside the acid removal tower will also be unstable. When the flow rate increases, the gas flow velocity speeds up, and the contact time between the calcium hydroxide (Ca(OH)2) powder of the acid removal agent and the waste gas is further shortened, resulting in a significant decrease in the acid removal efficiency. When the flow rate decreases, although the contact time may be extended, problems such as uneven gas flow distribution and local powder accumulation are likely to occur.

[0025] When the start-up, shutdown and temperature adjustment of the sintering furnace cause the waste gas flow rate to increase, the control component drives the arc-shaped cover 10 to slide upward and drives the inner diameter of the variable-diameter channel 11 to increase. When the start-up, shutdown and temperature adjustment of the sintering furnace cause the waste gas flow rate to decrease, the control component drives the arc-shaped cover 10 to slide downward and drives the inner diameter of the variable-diameter channel 11 to decrease.

[0026] Refer to Figure 4 , the variable-diameter channel 11 is formed by alternately connecting a number of movable plates 18 and corrugated plates 19 with equal numbers.

[0027] Specifically, the corrugated plate 19 is made of an elastic, foldable and high-temperature resistant material, and its specific material can be determined according to actual usage requirements. Here, it can be preferably an elastic metal plate (such as 310S stainless steel) with an acid-resistant treatment on the surface. When a number of movable plates 18 approach each other synchronously, a number of corrugated plates 19 are folded. When a number of movable plates 18 move away from each other, a number of corrugated plates 19 are extended.

[0028] Refer to Figures 3 - 5 , a connecting rod 16 is rotatably installed at the top of the arc-shaped cover 10, and the top end of the connecting rod 16 is rotatably connected to the bottom end of the movable plate 18. The connecting rod 16 is located inside the sealing sleeve 17. A sliding rod 20 is fixedly installed on the outer wall of the movable plate 18, and a sliding groove 21 for the sliding rod 20 to slide is provided on the inner wall of the acid removal tower body 1.

[0029] Specifically, through the cooperation between the sliding rod 20 and the sliding groove 21, the sliding direction of the movable plate 18 can be limited, effectively improving the stability of the movable plate 18 during sliding and the stability of the inner diameter change of the variable-diameter channel 11.

[0030] Refer to Figure 3 and Figure 9 , the sealing sleeve 17 includes a folding part 23 fixedly installed on the top surface of the annular part 6, a sleeving part 24 sleeved outside the variable-diameter channel 11, and a shielding part 25 fixedly installed on the inner wall of the sleeving part 24.

[0031] Specifically, when the inner diameter of the variable-diameter channel 11 changes, through the sleeving part 24 and the shielding part 25, the sealing between the turbulent flow channel 3 and the variable-diameter channel 11 can be ensured. The material of the sealing sleeve 17 can be determined according to the usage situation. Here, it can be preferably made of a PTFE-glass fiber-silicone rubber composite layer flexible material to meet the high-temperature acidic usage environment inside the acid removal tower body 1.

[0032] Example 2. Refer to Figures 1 - 9 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a spoiler 7 is fixedly installed inside the spoiler channel 3 through a mounting bracket 8, and the spoiler 7 is located directly below the arc-shaped cover 10. The bottom end of the spoiler 7 is conically arranged; a plurality of spiral guide vanes 9 are fixedly installed on the outer wall of the spoiler 7, and the inclination angle of the top end of the spiral guide vane 9 is larger than the inclination angle of the bottom end of the spiral guide vane 9. The spoiler channel 3 includes a converging part 4, a conical part 5, and an annular part 6 that are interconnected.

[0033] Specifically, after the high-speed exhaust gas impacts the conical surface of the spoiler 7, it is forced to radially diffuse, breaking the laminar boundary layer. The small inclination angle at the bottom of the spiral guide vane 9 guides the air flow to gently start to rotate, reducing the initial pressure loss; the large inclination angle at the top enhances the swirling strength and increases the turbulent kinetic energy, ensuring the deep mixing of ammonia and NOx that have not been fully mixed, as well as the nitrified exhaust gas and the deacidifying agent Ca(OH)2 powder.

[0034] The swirling exhaust gas impacts the arc-shaped surface of the arc-shaped cover 10, generating a downward-reflected eddy current, causing the unmixed gas to enter the swirling area again, and further improving the mixing efficiency.

[0035] In the prior art, ammonia and exhaust gas need to be forced to diffuse and mix through a straight pipe section of ≥5m. Through the collaborative design of the spoiler 7, the spiral guide vane 9, the spoiler channel 3, and the arc-shaped cover 10, it is possible to achieve four-level mixing of diffusion - swirling - strong turbulence - secondary spoiler in a short vertical space, overcoming the dual problems of the long mixing section of SCR ammonia and exhaust gas and the low efficiency of the deacidification tower.

[0036] Refer to Figure 3 and Figure 8 , a frustum block 28 is fixedly installed on the bottom surface of the arc-shaped cover 10, and the frustum block 28 slides inside the spoiler 7.

[0037] Specifically, the frustum block 28 can provide an installation position for the arc-shaped cover 10.

[0038] Refer to Figure 3 and Figure 8 , a positioning post 15 is fixedly installed on the bottom surface of the frustum block 28, a first elastic member 13 located inside the spoiler 7 is sleeved on the outer wall of the frustum block 28, and a second elastic member 14 located inside the spoiler 7 is sleeved on the outer wall of the positioning post 15.

[0039] Specifically, one end of the first elastic member 13 is fixedly connected to the top surface of the inner wall of the spoiler 7, and the other end is fixedly connected to the outer wall of the frustum block 28. One end of the second elastic member 14 is fixedly connected to the outer wall of the frustum block 28, and the other end of the second elastic member 14 is fixedly connected to the bottom surface of the inner wall of the spoiler 7. Both the first elastic member 13 and the second elastic member 14 are return springs, which provide the power for the arc-shaped cover 10 to return when the start-stop temperature adjustment of the sintering furnace causes a change in the exhaust gas flow rate.

[0040] Refer to Figure 7 and Figure 8 , a limiting block 12 is fixedly installed on the inner wall of the spoiler 7, and a limiting groove 22 for the limiting block 12 to slide is provided on the outer wall of the frustum block 28.

[0041] Specifically, through the cooperation between the limiting block 12 and the limiting groove 22, the stability of the frustum block 28 and the arc-shaped cover 10 during sliding can be improved.

[0042] The remaining structure is the same as that of Embodiment 1.

[0043] Working principle: The denitrified exhaust gas is introduced into the intake pipe 2, and at the same time, the deacidifying agent Ca(OH)2 powder is sprayed from the bottom of the deacidification tower body 1. After the exhaust gas enters the deacidification tower body 1, it first impacts the spoiler 7 to achieve gas flow diffusion, and then flows through the spiral guide vanes 9 to form a swirl, so that the exhaust gas is further mixed with the deacidifying agent Ca(OH)2 powder, and then impacts the arc-shaped cover 10 to achieve secondary spoiler and efficient deacidification.

[0044] At the same time, the exhaust gas impacts the arc-shaped cover 10 to drive the arc-shaped cover 10 to slide upward. Through a plurality of connecting rods 16, a plurality of movable plates 18 can be driven to move away from each other, and then the inner diameter of the variable-diameter channel 11 can be driven to become larger, reducing the speed of the exhaust gas passing through the variable-diameter channel 11, enabling the deacidifying agent Ca(OH)2 powder to fully react, improving the deacidification efficiency and stabilizing the flow rate. When the start-stop temperature adjustment of the sintering furnace causes the exhaust gas flow rate to decrease, under the action of the first elastic member 13, the arc-shaped cover 10 slides downward, and drives the inner diameter of the variable-diameter channel 11 to become smaller, increasing the speed of the exhaust gas passing through the variable-diameter channel 11, ensuring that the exhaust gas power can effectively pass through the subsequent activated carbon and dust removal cloth bags, and avoiding problems such as uneven gas flow distribution and local powder accumulation.

[0045] Embodiment 3, refer to Figures 1 - 9 , which is the fourth embodiment of the present invention, provides: A method for treating and purifying the combustion exhaust gas of a ceramic sintering furnace, using a ceramic sintering furnace combustion exhaust gas treatment and purification system, including the following steps: Step 1: Pre-dust the high-temperature exhaust gas generated by the ceramic sintering furnace through a cyclone dust collector to remove particles with a particle size greater than 50 μm in the exhaust gas; Step 2: Introduce the pre-dusted exhaust gas into a two-fluid atomization quench tower for rapid cooling and temperature reduction; Step 3: Inject ammonia into the rapidly cooled waste gas and force the waste gas and ammonia to diffusively mix; Step 4: Pass the waste gas mixed with ammonia into a reaction device equipped with a vanadium tungsten titanium catalyst layer to complete the denitrification reaction; Step 5: Pass the waste gas after denitrification into the intake pipe 2, and at the same time spray the deacidifying agent Ca(OH)2 powder from the bottom of the deacidification tower body 1. After the waste gas enters the deacidification tower body 1, it first impacts the flow disturbing member 7 to achieve uniform distribution of the gas flow, and then flows through the spiral guide vane 9 to form a swirl, so that the waste gas and the deacidifying agent Ca(OH)2 powder are further mixed, and then impacts the arc-shaped cover 10 to achieve secondary flow disturbance and efficient deacidification; Step 6: The control component can automatically adjust the inner diameter of the variable-diameter channel 11 according to the waste gas flow rate to stabilize the flow rate, and the waste gas flows out from the outlet pipe 27 after passing through the variable-diameter channel 11 and the air outlet channel 26; Step 7: The waste gas flowing out from the outlet pipe 27 is supplemented with activated carbon adsorption and bag dust removal to achieve deep purification.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A purification system for treating combustion exhaust gas of a ceramic sintering furnace, characterized in that, include: Deacidification tower body (1); An air inlet pipe (2), wherein the air inlet pipe (2) is arranged at the bottom of the deacidification tower body (1); An air outlet pipe (27), wherein the air outlet pipe (27) is arranged at the top of the deacidification tower body (1); A flow disturbance channel (3), wherein the flow disturbance channel (3) is arranged on the inner wall of the deacidification tower body (1); A variable diameter channel (11), wherein the variable diameter channel (11) is arranged inside the deacidification tower body (1); An air outlet channel (26), wherein the air outlet channel (26) is arranged at the top of the variable diameter channel (11) and is in communication with the air outlet pipe (27), and the top of the variable diameter channel (11) is slidably fitted with the bottom surface of the air outlet channel (26); a sealing sleeve (17), the sealing sleeve (17) being located between the variable diameter channel (11) and the annular portion (6) and being used to seal a gap between the variable diameter channel (11) and the annular portion (6); An arc-shaped cover (10), wherein the arc-shaped cover (10) is slidably arranged at the bottom of the variable-diameter channel (11), and the arc-shaped cover (10) is an inverted arc-shaped plate; A control component is arranged on the arc cover (10), and when the start-stop temperature adjustment of the sintering furnace causes the waste gas flow rate to increase, the control component drives the arc cover (10) to slide upwards and drives the inner diameter of the variable diameter channel (11) to increase; when the start-stop temperature adjustment of the sintering furnace causes the waste gas flow rate to decrease, the control component drives the arc cover (10) to slide downwards and drives the inner diameter of the variable diameter channel (11) to decrease.

2. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 1, characterized in that: The variable diameter channel (11) is formed by a plurality of equal numbers of movable plates (18) and corrugated plates (19) connected in an interlaced manner.

3. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 2, wherein: A connecting rod (16) is rotatably provided at the top of the arc-shaped cover (10), and the top end of the connecting rod (16) is rotatably connected to the bottom end of the movable plate (18). The connecting rod (16) is located inside the sealing sleeve (17). A sliding rod (20) is provided on the outer wall of the movable plate (18). A sliding groove (21) for the sliding rod (20) to slide is provided on the inner wall of the deacidification tower body (1).

4. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 2, characterized in that: The sealing sleeve (17) comprises a folding portion (23) arranged on the top surface of the annular portion (6), a sleeve portion (24) sleeved on the outside of the variable diameter channel (11), and a shielding portion (25) arranged on the inner wall of the sleeve portion (24).

5. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 3, characterized in that: A spoiler (7) is arranged inside the spoiler channel (3) via a mounting frame (8), and the spoiler (7) is located directly below the arc-shaped cover (10), and the bottom end of the spoiler (7) is arranged in a conical shape; The outer wall of the spoiler (7) is provided with a plurality of spiral guide blades (9), and the inclination angle of the top end of the spiral guide blade (9) is greater than the inclination angle of the bottom end of the spiral guide blade (9).

6. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 5, characterized in that: The flow-turbulating channel (3) comprises a flow collecting portion (4), a conical portion (5) and an annular portion (6) which are interconnected.

7. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 5, characterized in that: A truncated cone block (28) is provided on the bottom surface of the arc-shaped cover (10), and the truncated cone block (28) slides inside the spoiler (7).

8. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 7, characterized in that: The bottom surface of the frustum block (28) is provided with positioning columns (15). A first elastic member (13) located inside the flow spoiler (7) is sleeved on the outer wall of the frustum block (28). A second elastic member (14) located inside the flow spoiler (7) is sleeved on the outer wall of the positioning column (15).

9. The ceramic sintering furnace combustion exhaust gas treatment and purification system according to claim 8, characterized in that: The inner wall of the flow spoiler (7) is provided with limiting blocks (12). Limiting grooves (22) for the limiting blocks (12) to slide are formed on the outer wall of the frustum block (28).

10. A method for treating and purifying the combustion exhaust gas of a ceramic sintering furnace, using the ceramic sintering furnace combustion exhaust gas treatment and purification system described in claim 6, characterized in that, It includes the following steps: Step 1: Pre-dust the high-temperature waste gas generated by the ceramic sintering furnace through a cyclone dust collector; Step 2: Introduce the pre-dusted waste gas into a two-fluid atomization quenching tower for rapid cooling; Step 3: Inject ammonia into the rapidly cooled waste gas; Step 4: Introduce the waste gas mixed with ammonia into a reaction device provided with a vanadium tungsten titanium catalyst layer to complete the denitrification reaction; Step 5: Introduce the denitrified waste gas into the intake pipe (2). At the same time, spray the deacidifying agent Ca(OH)2 powder from the bottom of the deacidification tower body (1). After the waste gas enters the deacidification tower body (1), it first impacts the flow spoiler (7) to achieve uniform distribution of the gas flow, and then flows through the spiral guide vane (9) to form a swirl, so that the waste gas is further mixed with the deacidifying agent Ca(OH)2 powder, and then impacts the arc-shaped cover (10) to achieve secondary flow disturbance and efficient deacidification; Step 6: The control component can automatically adjust the inner diameter of the variable-diameter channel (11) according to the waste gas flow rate to stabilize the flow rate. The waste gas flows out from the outlet pipe (27) after passing through the variable-diameter channel (11) and the air outlet channel (26); Step 7: The waste gas flowing out from the outlet pipe (27) is supplemented with activated carbon adsorption and bag dust removal to achieve deep purification.

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