An apparatus for treating exhaust gas from a flame

Abstract

The application discloses a tail gas treatment equipment for flame combustion and relates to the technical field of atmospheric pollution prevention and control equipment. The tail gas treatment equipment comprises a cylinder, six through pipes are fixedly connected to the surface of the cylinder, a protection cylinder is fixedly sleeved to the surface of the cylinder, ceramic cotton is filled between the cylinder and the protection cylinder, and a gas suction pipe is fixedly connected to the surface of the cylinder. The inner cavity of the cylinder is provided with a negative pressure stability maintaining mechanism. The negative pressure stability maintaining mechanism comprises a bubbling floating unit, and the bubbling floating unit comprises a bubbling disc. The tail gas treatment equipment for flame combustion can dynamically adjust the height of the bubbling disc in real time by following the change of the negative pressure in the cylinder, so that the bubbling disc is always immersed to a set depth, the negative pressure fluctuation caused by the gas suction of an external vacuum pump is effectively adapted, the stability of the immersion depth of the bubbling disc and the uniformity of bubble distribution are ensured, and the purification efficiency of tail gas is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of air pollution control equipment technology, specifically to a tail gas treatment device for flame combustion. Background Technology

[0002] In the field of industrial flame combustion exhaust gas treatment, the combustion exhaust gas contains impurities such as dust, organic waste gas, and high-temperature water vapor. Vacuum-type stainless steel exhaust gas condensation buffer tanks are commonly used to complete the condensation, washing, and purification operations.

[0003] The equipment is equipped with a vacuum pump that continuously pumps air. In addition, the combustion conditions are intermittent and the load fluctuates greatly, which causes the vacuum degree inside the tank to change frequently and dynamically. This leads to the core problems of negative pressure imbalance, disordered gas-liquid contact inside the tank, and poor purification stability. Traditional vacuum condensation buffer tanks mostly adopt a fixed bubbling structure, which cannot adapt to the negative pressure fluctuations brought about by the vacuum pump. The bubbling immersion depth is unstable and the bubble distribution is uneven, which seriously reduces the exhaust gas washing and condensation effect.

[0004] Combining the above issues, we find that existing exhaust gas treatment equipment on the market is difficult to avoid all of these problems at the same time. Even if they can be solved, they require external tools to achieve the desired effect. Therefore, we propose a flame combustion exhaust gas treatment device. Summary of the Invention

[0005] The purpose of this invention is to provide a tail gas treatment device for flame combustion to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tail gas treatment device for flame combustion, comprising a main body, the main body comprising a cylinder, six through pipes fixedly connected to the surface of the cylinder, a protective sleeve fixedly sleeved on the surface of the cylinder, ceramic cotton filled between the cylinder and the protective sleeve, an exhaust pipe fixedly connected to the surface of the cylinder, and a negative pressure stabilization mechanism provided in the inner cavity of the cylinder. The negative pressure stabilization mechanism includes a bubbling floating unit, which includes a bubbling plate. The bubbling floating unit is used to dynamically float the bubbling plate following changes in the liquid level. The negative pressure stabilization mechanism also includes a dynamic counterweight unit, which includes a counterweight block. The dynamic counterweight unit applies dynamic pressure to the counterweight block according to the increase of negative pressure. The negative pressure stabilization unit also includes a buffer baffle unit, which includes a baffle plate and is used to buffer the bubbles that rise with the negative pressure.

[0007] Preferably, a plurality of support rods are fixedly connected to the inner bottom of the cylinder, and a main cylinder is fixedly connected to the top of the plurality of support rods. There is a gap between the top of the main cylinder and the inner top of the cylinder, and a buffer cavity is formed between the main cylinder and the cylinder. One end of the suction pipe extends into the inner cavity of the buffer cavity. The output end of one of the through pipes is fixedly connected to a riser. The riser is located in the inner cavity of the main cylinder. A sliding tube is slidably connected to the bottom of the riser. The bottom of the sliding tube is fixedly connected to the top of the bubbling disc. A tapered tube is fixedly connected to the top of the sliding tube. The surface of the tapered tube is slidably connected to the inner cavity of the riser. A float is fixedly sleeved on the surface of the sliding tube. The float is located above the bubbling disc.

[0008] Preferably, a first spring is slidably sleeved on the surface of the slide tube, the top end of the first spring is fixedly connected to the bottom of the tapered tube, the bottom end of the first spring is fixedly connected to the inner bottom of the riser, and a sealing ring is fixedly sleeved on the surface of the tapered tube, the sealing ring being slidably connected to the inner cavity of the riser.

[0009] Preferably, an upper weir and a lower weir are fixedly sleeved on the surface of the main cylinder, the lateral width of the lower weir is greater than the lateral width of the upper weir, and there is a gap between the upper weir and the lower weir and the inner wall of the cylinder. A number of capillary pores are opened at the inner bottom of the main cylinder, and the capillary pores are connected to the buffer cavity. A number of micropores are opened at the inner bottom of the main cylinder, and the micropores are connected to the inner cavity of the cylinder.

[0010] Preferably, the counterweight is fixedly sleeved on the surface of the sliding tube, with the bottom of the counterweight in contact with the top of the float. Two diaphragm boxes are fixedly connected to the top of the float, and elastic corrugated diaphragms are fixedly connected to the inner walls of both diaphragm boxes. The elastic corrugated diaphragms are made of 316L stainless steel. A pressure rod is fixedly connected to the bottom of the elastic corrugated diaphragm, and a pressure strip is rotatably connected to the bottom end of the pressure rod. A placement groove is opened on the surface of the diaphragm box, and a rotating column is rotatably connected to the inner wall of the placement groove. The inner wall of the pressure strip is fixedly connected to the surface of the rotating column, and the pressure strip is used to press the counterweight. A flexible tube is fixedly connected to the top of the diaphragm box, and a negative pressure tube is fixedly connected to the inner wall of the main cylinder. One end of the negative pressure tube extends to the buffer cavity and is inclined downward at a 45-degree angle, and the other end of the negative pressure tube is fixedly connected to one end of the flexible tube.

[0011] Preferably, a first torsion spring is slidably sleeved on the surface of the rotating column, one end of the first torsion spring is fixedly connected to the inner side of the placement groove, and the other end of the first torsion spring is fixedly connected to one side of the pressure strip.

[0012] Preferably, a slip ring is slidably fitted onto the surface of the riser, and the surface of the slip ring is fixedly connected to the inner wall of the baffle plate. A baffle hole is opened at the top of the baffle plate. A negative pressure sensing box is fixedly fitted onto the surface of the riser, and an elastic membrane is fixedly connected to the inner wall of the negative pressure sensing box. A rigid sheet is fixedly connected to the top of the elastic membrane, and the rigid sheet is slidably connected to the inner wall of the negative pressure sensing box. Two push rods are fixedly connected to the top of the rigid sheet, and the bottom ends of the two push rods are in contact with the top of the baffle plate. A rigid tube is fixedly connected to the surface of the negative pressure sensing box, and one end of the rigid tube is connected to the buffer cavity.

[0013] Preferably, two sets of mounting blocks are fixedly connected to the surface of the riser, each set having two mounting blocks arranged symmetrically in an upper and lower position, and guide rods are fixedly connected to the opposite surfaces of the two mounting blocks, with two guide rods in total, and the slip ring is slidably connected to the surfaces of the two guide rods.

[0014] Preferably, a second spring is slidably sleeved on the surface of both guide rods, the top end of the second spring is fixedly connected to the bottom of one of the mounting blocks, and the other end of the second spring is fixedly connected to the top of the slip ring.

[0015] Preferably, a liquid collection tank is fixedly connected to the bottom of the baffle plate, and a plurality of guide ports are provided at the bottom of the liquid collection tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a bubbling floating unit, the bubbling disc can adaptively float up and down according to the dynamic changes in negative pressure and liquid level in the main cylinder, always maintaining the optimal immersion bubbling depth. This avoids problems such as exposed bubbling disc, short-circuiting of bubbles, or excessive air resistance caused by negative pressure suction, and continuously maintains a uniform and stable bubbling gas-liquid contact state, ensuring the basic mass transfer effect of combustion exhaust gas from the front end, thereby improving the exhaust gas purification effect.

[0017] 2. By setting a dynamic counterweight unit, this invention can offset the dynamic negative pressure pulling force generated by the vacuum pump in real time, balance the overall force on the floating bubbling disc, and suppress problems such as shaking, floating deviation, and force imbalance of the bubbling disc caused by negative pressure fluctuations. This makes the floating and following action of the bubbling disc precise, stable, and without lag, ensuring that the bubbling condition is continuously controllable throughout the negative pressure fluctuation process, thereby improving the exhaust gas purification effect.

[0018] 3. This invention, by setting up a buffer baffle unit, buffers, rectifyes, and homogenizes the turbulent gas phase flow field formed by the vacuum pump, weakening the airflow impact and gas phase disturbance caused by negative pressure suction, stabilizing the overall negative pressure environment inside the cylinder, avoiding airflow turbulence from interfering with the bubbling state, and further ensuring the uniformity of bubbling mass transfer, significantly improving the overall stability and treatment efficiency of flame combustion exhaust gas condensation, washing, and purification; by setting up a negative pressure stabilization mechanism, the height of the bubbling plate can be dynamically adjusted in real time according to the negative pressure changes inside the cylinder, so that the bubbling plate is always immersed at a set depth, effectively adapting to the negative pressure fluctuations brought about by the vacuum pump, ensuring the stability of the bubbling plate immersion depth and the uniformity of bubble distribution, thereby effectively improving the purification efficiency of the exhaust gas. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional diagram showing the disassembled cylindrical body, protective cylinder, and ceramic wool of the present invention; Figure 3 This is a three-dimensional distribution diagram of the negative pressure stabilization mechanism of the present invention; Figure 4 This is a three-dimensional cross-sectional view of the riser of the present invention; Figure 5 This is a three-dimensional cross-sectional schematic diagram of the cylinder, main cylinder, upper weir, and lower weir of the present invention; Figure 6 This is a three-dimensional cross-sectional view of the membrane box of the present invention; Figure 7 This is a three-dimensional schematic diagram of the liquid collection tank of the present invention; Figure 8 This is a partial three-dimensional schematic diagram of the buffer deflector unit of the present invention.

[0020] In the diagram: 1. Main structure; 11. Cylinder; 12. Through pipe; 13. Protective cylinder; 14. Ceramic wool; 15. Extraction pipe; 2. Negative pressure stabilization mechanism; 21. Bubble floating unit; 2101. Bubble plate; 2102. Support rod; 2103. Main cylinder; 2104. Buffer chamber; 2105. Riser; 2106. Sliding pipe; 2107. Conical pipe; 2108. Float; 2109. First spring; 2110. Sealing ring; 2111. Upper weir; 2112. Lower weir; 2113. Capillary pore; 22. Dynamic counterweight unit; 2201. Counterweight block; 2202. Diaphragm box; 2203, Elastic corrugated diaphragm; 2204, Pressure rod; 2205, Pressure strip; 2206, Placement slot; 2207, Rotating column; 2208, Flexible hose; 2209, Negative pressure pipe; 2210, First torsion spring; 23, Buffer baffle unit; 2301, Baffle plate; 2302, Slip ring; 2303, Baffle orifice; 2304, Negative pressure sensing box; 2305, Elastic diaphragm; 2306, Rigid sheet; 2307, Push rod; 2308, Rigid pipe; 2309, Mounting block; 2310, Guide rod; 2311, Second spring; 2312, Liquid collection tank; 2313, Flow guide port. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figures 1-8 The present invention provides a technical solution: a tail gas treatment device for flame combustion, including a main body 1, the main body 1 including a cylinder 11, six pipes 12 fixedly connected to the surface of the cylinder 11, a protective cylinder 13 fixedly sleeved on the surface of the cylinder 11, the protective cylinder 13 is used to isolate and protect the high temperature cylinder 11 while dissipating heat through the holes on the surface, ceramic cotton 14 is filled between the cylinder 11 and the protective cylinder 13, the ceramic cotton 14 is used to achieve heat insulation and block heat conduction of the cylinder 11, an exhaust pipe 15 is fixedly connected to the surface of the cylinder 11, the exhaust pipe 15 is used to connect to an external vacuum pump to extract the purified gas, and a negative pressure stabilization mechanism 2 is provided in the inner cavity of the cylinder 11; The negative pressure stabilization mechanism 2 includes a bubbling floating unit 21, which includes a bubbling plate 2101. The bubbling floating unit 21 is used to dynamically float the bubbling plate 2101 in accordance with the change of liquid level. The negative pressure stabilization mechanism 2 also includes a dynamic counterweight unit 22, which includes a counterweight block 2201. The dynamic counterweight unit 22 applies dynamic pressure to the counterweight block 2201 according to the increase of negative pressure. The negative pressure stabilization unit also includes a buffer baffle unit 23, which includes a baffle plate 2301. The buffer baffle unit 23 is used to baffle and buffer the bubbles that rise with the negative pressure.

[0023] As a further definition of the negative pressure stabilization mechanism 2 of the present invention, a plurality of support rods 2102 are fixedly connected to the inner bottom of the cylinder 11, and a main cylinder 2103 is fixedly connected to the top of the plurality of support rods 2102. There is a gap between the top of the main cylinder 2103 and the inner top of the cylinder 11, and a buffer cavity 2104 is formed between the main cylinder 2103 and the cylinder 11. One end of the suction pipe 15 extends into the inner cavity of the buffer cavity 2104. The output end of one of the through pipes 12 is fixedly connected to a riser pipe 2105. The riser pipe 2105 is located in the inner cavity of the main cylinder 2103. A slide pipe 2106 is slidably connected to the bottom of the riser pipe 2105. The bottom of the slide pipe 2106 is fixedly connected to the top of the bubbling disc 2101. A tapered tube 2107 is fixedly connected to the top, and the surface of the tapered tube 2107 is slidably connected to the inner cavity of the riser 2105. A float 2108 is fixedly sleeved on the surface of the slide tube 2106, and the float 2108 is located above the bubbling plate 2101. By setting the bubbling floating unit 21, the bubbling plate 2101 can adaptively float up and down according to the dynamic changes of the negative pressure in the cylinder 11 and the liquid level in the main cylinder 2103, always maintaining the optimal immersion bubbling depth, avoiding the problems of the bubbling plate 2101 being exposed, the bubbles short-circuiting, or the ventilation resistance being too high caused by the negative pressure suction, and continuously maintaining a uniform and stable bubbling gas-liquid contact state, ensuring the basic mass transfer effect of the combustion exhaust gas from the front end, thereby improving the exhaust gas purification effect.

[0024] A first spring 2109 is slidably sleeved on the surface of the slide tube 2106. The top end of the first spring 2109 is fixedly connected to the bottom of the tapered tube 2107, and the bottom end of the first spring 2109 is fixedly connected to the inner bottom of the riser tube 2105. A sealing ring 2110 is fixedly sleeved on the surface of the tapered tube 2107, and the sealing ring 2110 is slidably connected to the inner cavity of the riser tube 2105. By setting the first spring 2109, the sliding distance of the slide tube 2106 in the riser tube 2105 can be elastically adjusted, which improves the following ability of the bubbling plate 2101 to change the liquid level. The setting of the sealing ring 2110 ensures the air circuit sealing throughout the process, avoids tail gas leakage and airflow turbulence, and ensures the stability of bubbling gas supply.

[0025] An upper weir 2111 and a lower weir 2112 are fixedly fitted onto the surface of the main cylinder 2103. The lateral width of the lower weir 2112 is greater than that of the upper weir 2111. Both the upper weir 2111 and the lower weir 2112 have gaps with the inner wall of the cylinder 11. Several capillary holes 2113 are opened at the bottom of the inner side of the main cylinder 2103, and the capillary holes 2113 are connected to the buffer chamber 2104. By setting up the upper weir 2111 and the lower weir 2112 for use, under the dynamic pumping condition of an external vacuum pump, the airflow velocity and negative pressure intensity inside the buffer chamber 2104 change in real time. The upper weir 2111 and the lower weir 2112 form a stepped baffle buffer. The flushing channel can progressively intercept, rectify, and decelerate the turbulent airflow generated by the external vacuum pump, eliminating local eddies and airflow impacts within the tank. This achieves a uniform distribution of negative pressure in the gas phase within the tank, stabilizing the overall negative pressure field from the source and preventing airflow disturbances from interfering with the bubbling operation. The capillary pores 2113, when performing negative pressure pumping, allow the condensed mist in the gas phase to continuously fall into the buffer chamber 2104. The capillary pores 2113 utilize the vacuum negative pressure difference and capillary permeation to ensure that the liquid accumulated in the buffer chamber 2104 flows back to the main cylinder 2103 liquid chamber at a uniform speed and continuously, thereby achieving self-balancing of the liquid level in the buffer chamber 2104 and preventing full tank accumulation.

[0026] The specific implementation method of this embodiment is as follows: When the device is working, the external vacuum pump continuously pumps air into the cylinder 11 through the suction pipe 15, so that the cylinder 11 and the inner cavity of the main cylinder 2103 form a stable negative pressure environment. The exhaust gas from the flame combustion is introduced into the main cylinder 2103 through one of the through pipes 12, the riser 2105, the conical pipe 2107, the slide pipe 2106 and the bubbling plate 2101, and the exhaust gas is bubbled and diffused into the liquid medium in the main cylinder 2103 through the bubbling plate 2101. The process completes the condensation, washing, and purification of the exhaust gas. During the extraction operation, the extraction pipe 15 connects to the inner cavity of the buffer chamber 2104 to extract air, which can evenly release the negative pressure suction force and avoid directly extracting air from the main cylinder 2103, causing airflow turbulence and abnormal liquid level rise within the main cylinder 2103. This provides a basic negative pressure environment for stable equipment operation. When the liquid level fluctuates with the negative pressure, the float 2108 fluctuates synchronously. The movement of the float 2108 drives the sliding pipe 2106 to move along the riser 21. The inner cavity of the 05 slides. During the relative sliding process between the slide tube 2106 and the riser tube 2105, the first spring 2109 elastically expands and contracts synchronously with the displacement of the slide tube 2106. The elastic damping of the first spring 2109 buffers the impact during sliding and adaptively compensates for the displacement deviation of the bubbling plate 2101 caused by negative pressure and liquid level fluctuations. This effectively improves the smoothness of the lifting and lowering adjustment of the bubbling plate 2101 and the accuracy of liquid level following. At the same time, the sealing ring 211 on the outside of the tapered tube 2107... The 0 always slides against the inner wall of the riser 2105, ensuring the air circuit is sealed throughout, avoiding exhaust gas leakage and airflow turbulence, and ensuring the stability of the bubbling gas supply. When the negative pressure of the external vacuum pump increases, the flow-limiting damping effect of the upper weir 2111 and the lower weir 2112 can increase the back pressure of the buffer chamber 2104, forcing the liquid level in the main cylinder 2103 to rise adaptively, precisely matching the upward stroke of the floating bubbling plate 2101. When the negative pressure decreases, the airflow in the chamber is smoothly depressurized, and the liquid level automatically falls back to its original position.

[0027] Example 2: Please refer to Figures 2-6 The present invention provides a technical solution: a tail gas treatment device for flame combustion, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0028] As a further definition of the negative pressure stabilization mechanism 2 of the present invention, a counterweight 2201 is fixedly sleeved on the surface of the slide tube 2106, the bottom of the counterweight 2201 is in contact with the top of the float 2108, and two diaphragm boxes 2202 are fixedly connected to the top of the float 2108. An elastic corrugated diaphragm 2203 is fixedly connected to the inner wall of each of the two diaphragm boxes 2202. The elastic corrugated diaphragm 2203 is made of 316L stainless steel. A pressure rod 2204 is fixedly connected to the bottom of the elastic corrugated diaphragm 2203, and a pressure strip 2205 is rotatably connected to the bottom end of the pressure rod 2204. A placement groove 2206 is provided on the surface of the diaphragm box 2202, and a rotating column 2207 is rotatably connected to the inner wall of the placement groove 2206. The inner wall of the pressure strip 2205 is fixedly connected to the surface of the rotating column 2207. 205 is used to press the counterweight 2201. The top of the membrane box 2202 is fixedly connected to the hose 2208. The inner wall of the main cylinder 2103 is fixedly connected to the negative pressure pipe 2209. One end of the negative pressure pipe 2209 extends to the buffer chamber 2104 and is inclined downward at 45 degrees. The other end of the negative pressure pipe 2209 is fixedly connected to one end of the hose 2208. By setting the dynamic counterweight unit 22, the dynamic negative pressure pulling force generated by the external vacuum pump can be offset in real time, balancing the overall force of the floating bubbling disc 2101, suppressing the problems of shaking, floating offset, and force imbalance of the bubbling disc 2101 caused by negative pressure fluctuations, so that the floating and following action of the bubbling disc 2101 is accurate, stable and without lag, ensuring that the bubbling condition is continuously controllable throughout the negative pressure fluctuation, thereby improving the exhaust gas purification effect.

[0029] A first torsion spring 2210 is slidably sleeved on the surface of the rotating column 2207. One end of the first torsion spring 2210 is fixedly connected to the inner side of the placement groove 2206, and the other end of the first torsion spring 2210 is fixedly connected to one side of the pressure bar 2205. By setting the first torsion spring 2210, the reaction force of the first torsion spring 2210 can ensure that the pressure bar 2205 does not contact the counterweight 2201 and does not apply pressure to the counterweight 2201 under normal pressure.

[0030] The specific implementation of this embodiment is as follows: Under normal pressure or low negative pressure conditions, the first torsion spring 2210 provides a reset torque, causing the pressure bar 2205 to remain in an open state, detached from the surface of the counterweight 2201, with no additional pressure applied to the counterweight 2201, ensuring the normal floating adjustment of the bubbling floating unit 21. When the pumping intensity of the external vacuum pump increases and the negative pressure inside the tank rises, the negative pressure pipe 2209 collects the negative pressure of the buffer chamber 2104 and introduces it into the diaphragm box 2202 through the hose 2208. The negative pressure pulls the elastic corrugated diaphragm 2203 to extend and deform, causing the pressure bar 2205 to remain open and detached from the surface of the counterweight 2201. No additional pressure is applied to the counterweight 2201, ensuring the normal floating adjustment of the bubbling floating unit 21. When the pumping intensity of the external vacuum pump increases and the negative pressure inside the tank rises, the negative pressure pipe 2209 collects the negative pressure of the buffer chamber 2104 and introduces it into the diaphragm box 2202 through the hose 2208. The negative pressure pulls the elastic corrugated diaphragm 2203 to extend and deform, causing the pressure bar 2205 to extend and deform. The rod 2204 moves upward, driving the pressure strip 2205 to rotate around the rotating column 2207 as the axis, and to press against the counterweight 2201. Through negative pressure linkage, the overall downward pressure on the floating assembly is dynamically increased, which precisely counteracts the upward negative pressure adsorption pull generated by the external vacuum pump. As the negative pressure fluctuates in real time, the deformation of the diaphragm 2202 changes synchronously, and the pressure intensity is adaptively adjusted to continuously balance the overall force on the floating bubbling plate 2101. This effectively suppresses the problem of force imbalance on the bubbling plate 2101 caused by negative pressure fluctuations, ensuring that the bubbling operation is stable and controllable throughout the process.

[0031] Example 3: Please refer to Figures 7-8 The present invention provides a technical solution: a tail gas treatment device for flame combustion, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0032] As a further definition of the negative pressure stabilization mechanism 2 of the present invention, a slip ring 2302 is slidably sleeved on the surface of the riser 2105. The surface of the slip ring 2302 is fixedly connected to the inner wall of the baffle plate 2301. A baffle hole 2303 is opened at the top of the baffle plate 2301. A negative pressure sensing box 2304 is fixedly sleeved on the surface of the riser 2105. An elastic membrane 2305 is fixedly connected to the inner wall of the negative pressure sensing box 2304. A rigid sheet 2306 is fixedly connected to the top of the elastic membrane 2305. The rigid sheet 2306 is slidably connected to the inner wall of the negative pressure sensing box 2304. Two push rods 23 are fixedly connected to the top of the rigid sheet 2306. 07. The bottom ends of both push rods 2307 are in contact with the top of the baffle plate 2301. A rigid pipe 2308 is fixedly connected to the surface of the negative pressure sensing box 2304. One end of the rigid pipe 2308 is connected to the buffer chamber 2104. By setting the buffer baffle unit 23, the turbulent gas phase flow field formed by the external vacuum pump is buffered, rectified and homogenized, weakening the airflow impact and gas phase disturbance caused by negative pressure suction, stabilizing the overall negative pressure environment inside the cylinder 11, avoiding airflow turbulence from interfering with the bubbling state, further coordinating to ensure the uniformity of bubbling mass transfer, and greatly improving the overall stability and treatment efficiency of flame combustion exhaust gas condensation, washing and purification.

[0033] Two sets of mounting blocks 2309 are fixedly connected to the surface of the riser 2105. There are two mounting blocks 2309 in each set, which are arranged symmetrically from top to bottom. Guide rods 2310 are fixedly connected to the opposite surfaces of the two mounting blocks 2309. There are two guide rods 2310. The slip ring 2302 is slidably connected to the surface of the two guide rods 2310. By setting the mounting blocks 2309 and guide rods 2310 to work together, the vertical displacement of the slip ring 2302 can be stably guided.

[0034] The surfaces of both guide rods 2310 are slidably fitted with second springs 2311. The top end of the second spring 2311 is fixedly connected to the bottom of one of the mounting blocks 2309, and the other end of the second spring 2311 is fixedly connected to the top of the slip ring 2302. By setting the second spring 2311, the up and down movement distance of the slip ring 2302 can be elastically adjusted. And through the reaction force of the second spring 2311, it can be ensured that under normal pressure, the slip ring 2302 can drive the baffle 2301 away from the top of the main cylinder 2103, so as to avoid obstructing the flow of air under normal pressure.

[0035] A liquid collection tank 2312 is fixedly connected to the bottom of the baffle plate 2301. Several guide ports 2313 are opened at the bottom of the liquid collection tank 2312. By setting the liquid collection tank 2312 and the guide ports 2313 in combination, the liquid collection tank 2312 can effectively collect the mist-like droplets formed by the condensation of the exhaust gas, and the guide ports 2313 can make the mist-like droplets flow back and drip evenly into the liquid phase area of ​​the main cylinder 2103, effectively reducing mist entrainment and liquid loss.

[0036] The specific implementation of this embodiment is as follows: The negative pressure sensing box 2304 collects the negative pressure signal inside the buffer chamber 2104 in real time through the rigid tube 2308 to achieve dynamic negative pressure sensing. When the negative pressure inside the cylinder 11 fluctuates with the pumping load of the external vacuum pump, the elastic membrane 2305 inside the negative pressure sensing box 2304 deforms under the suction force of the negative pressure, causing the rigid plate 2306 to slide vertically, thereby pushing the two sets of push rods 2307 downward and pressing down the baffle plate 2301. The baffle plate 2301 slides vertically smoothly along the two guide rods 2310 through the slip ring 2302 to achieve precise guided displacement. At the same time, the second spring 2311 is stretched. Relying on the elastic deformation of the second spring 2311, the baffle plate 2301 adapts to the adaptive stroke adjustment. Under normal pressure, the second spring 2311 pushes the slip ring 2302 in the opposite direction, bringing... The baffle plate 2301 moves upward and resets, away from the top of the main cylinder 2103, to avoid obstructing the normal pressure airflow. When the negative pressure increases, the baffle plate 2301 moves downward and closer to the top of the main cylinder 2103. Together with the baffle orifice 2303, it performs multi-stage interception, buffering and rectification of the turbulent airflow generated by the external vacuum pump, effectively homogenizing the gas phase flow field inside the cylinder 11, weakening the airflow turbulence and negative pressure impact, stabilizing the overall negative pressure environment inside the cylinder 11, and avoiding airflow disturbance from interfering with the bottom bubbling mass transfer condition. At the same time, the liquid collection tank 2312 set at the bottom of the baffle plate 2301 can effectively collect the mist-like droplets formed by the condensation of the tail gas, and uniformly return them to the liquid phase area of ​​the main cylinder 2103 through the bottom guide port 2313, effectively reducing mist entrainment and liquid loss. All structures requiring corrosion protection are protected by conventional corrosion protection methods.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail gas treatment device for flame combustion, comprising a main body (1), the main body (1) comprising a cylinder (11), six through pipes (12) fixedly connected to the surface of the cylinder (11), a protective sleeve (13) fixedly sleeved on the surface of the cylinder (11), ceramic cotton (14) filling the space between the cylinder (11) and the protective sleeve (13), and an exhaust pipe (15) fixedly connected to the surface of the cylinder (11), characterized in that: The inner cavity of the cylinder (11) is provided with a negative pressure stabilization mechanism (2). The negative pressure stabilization mechanism (2) includes a bubbling floating unit (21), which includes a bubbling plate (2101). The bubbling floating unit (21) is used to dynamically float the bubbling plate (2101) following the change in liquid level. The negative pressure stabilization mechanism (2) also includes a dynamic counterweight unit (22), which includes a counterweight block (2201). The dynamic counterweight unit (22) applies dynamic pressure to the counterweight block (2201) according to the increase of negative pressure. The negative pressure stabilization unit also includes a buffer baffle unit (23), which includes a baffle plate (2301). The buffer baffle unit (23) is used to baffle and buffer the bubbles that rise with the negative pressure.

2. The exhaust gas treatment device for flame combustion according to claim 1, characterized in that: A plurality of support rods (2102) are fixedly connected to the bottom inner part of the cylinder (11), and a main cylinder (2103) is fixedly connected to the top of the support rods (2102). There is a gap between the top of the main cylinder (2103) and the top inner part of the cylinder (11). A buffer cavity (2104) is formed between the main cylinder (2103) and the cylinder (11). One end of the suction pipe (15) extends into the inner cavity of the buffer cavity (2104). The output end of one of the connecting pipes (12) is fixedly connected to a riser pipe (2105). The bottom of the riser (2105) is slidably connected to the inner cavity of the main cylinder (2103). The bottom of the slide tube (2106) is fixedly connected to the top of the bubble plate (2101). The top of the slide tube (2106) is fixedly connected to the tapered tube (2107). The surface of the tapered tube (2107) is slidably connected to the inner cavity of the riser (2105). The surface of the slide tube (2106) is fixedly fitted with a float (2108). The float (2108) is located above the bubble plate (2101).

3. The exhaust gas treatment device for flame combustion according to claim 2, characterized in that: The surface of the slide tube (2106) is slidably fitted with a first spring (2109). The top end of the first spring (2109) is fixedly connected to the bottom of the tapered tube (2107), and the bottom end of the first spring (2109) is fixedly connected to the inner bottom of the riser (2105). The surface of the tapered tube (2107) is fixedly fitted with a sealing ring (2110), and the sealing ring (2110) is slidably connected to the inner cavity of the riser (2105).

4. The exhaust gas treatment device for flame combustion according to claim 2, characterized in that: The surface of the main cylinder (2103) is fixedly fitted with an upper weir (2111) and a lower weir (2112). The lateral width of the lower weir (2112) is greater than that of the upper weir (2111). Both the upper weir (2111) and the lower weir (2112) have gaps with the inner wall of the cylinder (11). The inner bottom of the main cylinder (2103) is provided with a number of capillary pores (2113). The capillary pores (2113) are connected to the buffer cavity (2104). The inner bottom of the main cylinder (2103) is provided with a number of micropores. The micropores are connected to the inner cavity of the cylinder (11).

5. The exhaust gas treatment device for flame combustion according to claim 2, characterized in that: The counterweight (2201) is fixedly sleeved on the surface of the slide tube (2106). The bottom of the counterweight (2201) is in contact with the top of the float (2108). Two diaphragm boxes (2202) are fixedly connected to the top of the float (2108). An elastic corrugated diaphragm (2203) is fixedly connected to the inner wall of each of the two diaphragm boxes (2202). The elastic corrugated diaphragm (2203) is made of 316L stainless steel. A pressure rod (2204) is fixedly connected to the bottom of the elastic corrugated diaphragm (2203). A pressure strip (2205) is rotatably connected to the bottom end of the pressure rod (2204). The surface of the diaphragm box (2202) has openings. The inner wall of the placement groove (2206) is rotatably connected to a rotating column (2207). The inner wall of the pressure strip (2205) is fixedly connected to the surface of the rotating column (2207). The pressure strip (2205) is used to press the counterweight (2201). The top of the membrane box (2202) is fixedly connected to a flexible tube (2208). The inner wall of the main cylinder (2103) is fixedly connected to a negative pressure tube (2209). One end of the negative pressure tube (2209) extends to the buffer chamber (2104) and is inclined downward at 45 degrees. The other end of the negative pressure tube (2209) is fixedly connected to one end of the flexible tube (2208).

6. The exhaust gas treatment device for flame combustion according to claim 5, characterized in that: The rotating column (2207) is slidably fitted with a first torsion spring (2210). One end of the first torsion spring (2210) is fixedly connected to the inner side of the placement groove (2206), and the other end of the first torsion spring (2210) is fixedly connected to one side of the pressure strip (2205).

7. The exhaust gas treatment device for flame combustion according to claim 2, characterized in that: A slip ring (2302) is slidably fitted onto the surface of the riser (2105). The surface of the slip ring (2302) is fixedly connected to the inner wall of the baffle plate (2301). A baffle hole (2303) is opened at the top of the baffle plate (2301). A negative pressure sensing box (2304) is fixedly fitted onto the surface of the riser (2105). An elastic membrane (2305) is fixedly connected to the inner wall of the negative pressure sensing box (2304). A [missing information - likely a device or device] is fixedly connected to the top of the elastic membrane (2305). A rigid sheet (2306) is slidably connected to the inner wall of the negative pressure sensing box (2304). Two push rods (2307) are fixedly connected to the top of the rigid sheet (2306). The bottom ends of the two push rods (2307) are in contact with the top of the baffle plate (2301). A rigid tube (2308) is fixedly connected to the surface of the negative pressure sensing box (2304). One end of the rigid tube (2308) is connected to the buffer cavity (2104).

8. The exhaust gas treatment device for flame combustion according to claim 7, characterized in that: Two sets of mounting blocks (2309) are fixedly connected to the surface of the riser (2105). Each set of mounting blocks (2309) consists of two blocks and is arranged symmetrically in the upper and lower positions. Guide rods (2310) are fixedly connected to the opposite surfaces of the two mounting blocks (2309). There are two guide rods (2310). The slip ring (2302) is slidably connected to the surfaces of the two guide rods (2310).

9. The exhaust gas treatment device for flame combustion according to claim 8, characterized in that: A second spring (2311) is slidably sleeved on the surface of both guide rods (2310). The top end of the second spring (2311) is fixedly connected to the bottom of one of the mounting blocks (2309), and the other end of the second spring (2311) is fixedly connected to the top of the slip ring (2302).

10. The exhaust gas treatment device for flame combustion according to claim 7, characterized in that: The bottom of the baffle plate (2301) is fixedly connected to a liquid collection tank (2312), and the bottom of the liquid collection tank (2312) is provided with a number of guide ports (2313).

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