Circulating type directional guide tail gas filtering device for chlorinated paraffin production

Abstract

The invention relates to the technical field of chlorinated paraffin tail gas filtering, in particular to a circulating type directional guide tail gas filtering device for chlorinated paraffin production. A support is fixedly connected to the outer wall of a cylinder, an exhaust port is fixedly connected to the top of the cylinder, and an air inlet is fixedly connected to the portion, close to the top, of the outer wall of the cylinder. A threaded groove is formed between the outer wall and the inner wall of the barrel, a guide assembly is fixedly connected between the bottom of the barrel and the top of the support, and a circulation assembly is movably connected between the inner wall of the guide assembly and the outer wall of the exhaust port. After tail gas enters the barrel through the air inlet, flowing air drives the circulation assembly to rotate so as to guide the airflow circulation direction, so that an airflow field in the annular channel is stable and ordered, and disorder is prevented; meanwhile, the guide assembly guides tail gas impurities in centrifugal rotation downwards, double-layer filtration is conducted according to the particle size, the guide direction is adjusted in a self-adaptive mode, the circulation assembly is further pushed to change the rotation length to adjust vortex airflow, and the centrifugal filtration requirements of different particles are met.

Description

Technical Field

[0001] The invention relates to the technical field of chlorinated paraffin tail gas filtering, in particular to a circulating directional guided tail gas filtering device for chlorinated paraffin production. Background Art

[0002] The production process of chlorinated paraffin produces tail gas, which contains a variety of pollutants, such as acidic gases (hydrogen chloride, etc.), organic chlorides and solid particles. If it is discharged directly without treatment, it will cause serious harm to the environment, such as acid rain, photochemical smog, harm to human health and damage to ecological balance. Therefore, it is very necessary to effectively filter and treat the tail gas used in the production of chlorinated paraffin.

[0003] In tail gas treatment, a variety of filtering devices are usually used, and the order of use of various devices depends on the tail gas composition, characteristics and treatment requirements. If the removal of particulate matter is given priority and gradually refined, first use a cyclone dust collector to initially separate large solid particles, then use a bag filter or electrostatic precipitator to further remove particulate matter, then let the tail gas enter the Venturi scrubber to remove acidic gases and some residual particulate matter, and then send the tail gas to a packed tower to remove acidic gases, and finally use an activated carbon adsorber to adsorb organic pollutants; If gas component removal is prioritized, when the impact of acidic gases is large, a packed tower can be used to remove acidic gases first, followed by an activated carbon adsorber to remove organic pollutants. Then, depending on the solid impurities or other pollutants in the exhaust gas, a cyclone dust collector or a Venturi scrubber can be selected, and finally a bag dust collector or an electrostatic precipitator can be used to remove solid particles.

[0004] Regarding the use of the exhaust gas filtering device for the cyclone dust collector mentioned above; the inner wall of the cylinder of the existing cyclone dust collector is usually relatively smooth, and the airflow rotates in the cylinder relying on the initial rotational force generated by the tangential air intake. This method causes the airflow rotation stability to be poor and is prone to form local vortices; and the presence of vortices will not only cause the separated particles to be re-involved in the airflow, reducing the separation effect, but also result in a limited residence time of the airflow in the cylinder.

[0005] In view of this, the present invention provides a circulating directional guide tail gas filtering device for chlorinated paraffin production. Summary of the invention

[0006] The object of the present invention is to provide a circulating, directional, exhaust gas filtering device for chlorinated paraffin production to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides a circulating directional guided tail gas filtering device for chlorinated paraffin production, comprising a cyclone dust collector, the cyclone dust collector comprising a bracket and a cylinder; the outer wall of the cylinder is fixedly connected to the bracket, the top of the cylinder is fixedly connected to the exhaust port, and the outer wall of the cylinder near the top is fixedly connected to the air inlet; A threaded groove is provided between the outer wall and the inner wall of the cylinder, a guide component is fixedly connected between the bottom of the cylinder and the top of the bracket, and a circulation component is movably connected between the inner wall of the guide component and the outer wall of the exhaust port; The circulation component is used to rotate along the flow direction of the exhaust gas, and the guide component is used to adaptively adjust the guide arc according to different exhaust gas particle sizes, and adjust the circulation density of the circulation component while adjusting the guide angle.

[0008] As a further improvement of the present technical solution, the guide assembly includes a cone, which is fixedly connected to the bottom of the cylinder, and a plurality of guide members are movably connected between the inner wall of the cone and the interior of the cylinder, an elastic film is fixedly connected to the interior of the cylinder groove, and a plurality of push rods are fixedly connected to the outer wall of the cylinder passing through the elastic film, a pushing member is fixedly connected between the bottom of the push rod and the top of the bracket, and the plurality of pushing members are respectively movably connected to the outer walls of the plurality of guide members.

[0009] As a further improvement of the present technical solution, the guide member includes a guide plate, which is movably connected inside a plurality of grooves of the cone, a rotating rod is fixedly connected to the top of the guide plate, and the rotating rod is movably connected inside the cylinder near the bottom, a sealing ring is provided between the top of the guide plate and the inside of the cylinder, and a circulation assembly is movably connected between the plurality of guide plates and the outer wall of the exhaust port.

[0010] As a further improvement of the present technical solution, the pushing member includes two support plates, the support plates are fixedly connected to the top of the bracket, a gear is movably connected between the two support plates, the top of the gear is meshingly connected with an upper rack, a slider on the outer wall of the upper rack is movably connected between the two support plates, one end of the upper rack is movably connected to the outer wall of the guide plate, the bottom of the gear is meshingly connected with a lower rack, and one end of the lower rack is fixedly connected to the outer wall of the push rod.

[0011] As a further improvement of the technical solution, the elastic film is fixedly connected to the inside of the thread groove of the cylinder in a threaded shape, and the elastic film is made of PTFE.

[0012] As a further improvement of the present technical solution, the circulation assembly includes a turntable, which is fixedly connected to the outer wall of the exhaust port that penetrates into the interior of the cylinder, and a rotating cylinder is movably connected between the outer wall of the turntable and the outer wall of the exhaust port located inside the cylinder, and a threaded blade is fixedly connected to the bottom of the rotating cylinder, and a support ring is fixedly connected to the end of the threaded blade, and the support ring is movably connected between multiple guide plates and the inner wall of the cone.

[0013] As a further improvement of the present technical solution, the threaded blades are thread-shaped and are made of titanium alloy.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the circulating directional guided tail gas filtration device for chlorinated paraffin production, when the tail gas enters the cylinder through the air inlet, its flowing wind body can drive the circulation component to rotate, thereby guiding the circulation direction of the airflow, and can promote the airflow to build a stable and orderly circulation flow field in the annular channel, thereby preventing the airflow entering the annular channel from generating turbulent flow, and avoiding the situation where some particulate matter cannot be fully affected by centrifugal force due to the turbulent airflow, thereby preventing the situation where effective separation cannot be achieved; At the same time, the guide component will perform a downward drainage operation on the exhaust impurities in the centrifugal rotation state. During this process, double-layer filtration is carried out according to the particle size of the exhaust impurities, and the guide direction can be adaptively adjusted. In addition, the guide component will also push the circulation component to change its rotation length, thereby adjusting the vortex airflow formed by the circulation, so that it can adapt to the centrifugal filtration needs of particles of different sizes.

[0015] 2. In the circulating directional guided exhaust gas filtration device for chlorinated paraffin production, during the chlorinated paraffin production process, the particle size in the exhaust gas will vary due to different production conditions. The guiding component senses the change in the particle size in the exhaust gas and adjusts its own guiding angle direction to adapt, so that the information on the particle size in the exhaust gas can be reversely inferred; the problems existing in the chlorinated paraffin production process can be understood in a timely manner so that production personnel can quickly make adjustments based on this information, thereby ensuring the efficiency and stability of the chlorinated paraffin production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the large particle guiding structure of the present invention; Figure 4 It is a schematic diagram of the small particle guiding structure of the present invention; Figure 5 It is a schematic diagram of the structure of the circulation component of the present invention; Figure 6 It is a schematic diagram of the structure of the guide assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the flow guide member of the present invention; Figure 8 It is a schematic diagram of the structure of the pusher of the present invention.

[0017] The meaning of each number in the figure is: 1. Cylinder; 11. Bracket; 12. Air inlet; 13. Exhaust port; 14. guide assembly; 140. cone; 141. push rod; 142. flow guide; 1420. guide plate; 1421. rotating rod; 1422. sealing ring; 143. pushing member; 1430. supporting plate; 1431. upper rack; 1432. gear; 1433. lower rack; 144. elastic film; 15. Circulation assembly; 150. Rotating drum; 151. Rotating disk; 152. Threaded blades; 153. Support ring. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] 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" 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 a limitation on the present invention.

[0020] Example 1 See also Figure 1-Figure 4 As shown, the purpose of this embodiment is to provide a circulating directional guided exhaust gas filtering device for chlorinated paraffin production, including a cyclone dust collector, the cyclone dust collector includes a bracket 11 and a cylinder 1; the outer wall of the cylinder 1 is fixedly connected to the bracket 11, the top of the cylinder 1 is fixedly connected to the exhaust port 13, and the outer wall of the cylinder 1 is fixedly connected to the air inlet 12 near the top; A threaded groove is provided between the outer wall and the inner wall of the cylinder 1, a guide assembly 14 is fixedly connected between the bottom of the cylinder 1 and the top of the bracket 11, and a circulation assembly 15 is movably connected between the inner wall of the guide assembly 14 and the outer wall of the exhaust port 13; The circulation component 15 is used to rotate along the exhaust gas flow direction, and the guide component 14 is used to adjust the guide arc according to the size of different exhaust gas particles, and adjust the circulation density of the circulation component 15 while adjusting the guide angle; The improvement of this embodiment is that the exhaust gas is introduced through the air inlet 12, so that the flow of the exhaust gas drives the circulation component 15 to rotate, guides the circulation direction of the airflow, and forms a stable and orderly secondary circulation flow field in the annular channel, thereby avoiding the turbulent flow of the airflow entering the annular channel, resulting in some particles not being fully affected by the centrifugal force and being separated; The tail gas impurities in the centrifugal rotation are guided downward by the guide component 14, and double-layer filtration is performed according to the particle size of the tail gas impurities, and the guide direction is adaptively adjusted; and the particle size in the tail gas is timely understood according to the change of the angle, and the problems generated in the production process of chlorinated paraffin are understood according to the different particle sizes, so as to make timely adjustments; at the same time, the change of the guide component 14 will drive the circulation component 15 to be telescopically adjusted inside the cylinder 1, and the spiral length of the circulation component 15 is changed, thereby changing the vortex airflow of the circulation to adapt to the centrifugal filtration of particles of different sizes; First, the specific structure of the guide assembly 14 is disclosed. The guide assembly 14 includes a cone 140, which is fixedly connected to the bottom of the cylinder 1. A plurality of flow guides 142 are movably connected between the inner wall of the cone 140 and the inside of the cylinder 1. An elastic film 144 is fixedly connected to the inside of the groove of the cylinder 1. The elastic film 144 passes through the outer wall of the cylinder 1 and is fixedly connected to a plurality of push rods 141. A push member 143 is fixedly connected between the bottom of the push rod 141 and the top of the bracket 11. The plurality of push members 143 are movably connected to the outer walls of the plurality of flow guides 142 respectively. See also Figure 3 , Figure 4 and Figure 6 As shown, the exhaust gas is introduced into the cylinder 1 through the air inlet 12. According to the working principle of the existing cyclone dust collector, the dust-containing gas enters the cylinder 1 of the cyclone dust collector through the tangential air inlet 12 at a certain speed; when the gas enters tangentially at high speed, according to the principle of fluid mechanics, the airflow is forced to make a circular motion in the cylinder 1, so that the particles in the exhaust gas are thrown to the wall of the device, and slide down along the wall under the action of their own gravity and the friction with the wall of the device; At the same time, in the process of particle separation, the airflow in the cyclone dust collector will be stratified; the outer airflow is close to the cylinder wall, and this part of the airflow carries more particles, and its speed will gradually decrease due to the continuous separation of the particles; while the central area is the rising inner airflow, which is relatively clean after purification, and its upward flow is to maintain the airflow balance in the entire cyclone dust collector; the purified gas after separation is discharged upward under the guidance of the exhaust port 13 in the center of the cyclone dust collector; The exhaust gas makes a circular motion inside the cylinder 1 to drive the circulation component 15 to rotate. At the same time, as the particles move in the airflow, a wake will be formed behind them. The wake formed by large particles has a larger impact range and intensity on the surrounding airflow, which will interfere with the flow of subsequent airflow, making the airflow velocity distribution in the wake area uneven and the overall velocity relatively low. The wake formed by small particles has a relatively small impact and less interference on the surrounding airflow, so the airflow around the small particles can be closer to the velocity of the original airflow, resulting in different exhaust gas velocity of different particle sizes. According to the different sizes of particles, the rotating wind speed inside the cylinder 1 is different. When the wind speed is high, the elastic film 144 inside the spiral groove of the cylinder 1 will be pushed to expand outward, so that the expanded elastic film 144 and the cylinder 1 together construct an annular channel. The elastic film 144 surrounds the form and matches the airflow direction, so that the airflow entering the expanded elastic film 144 follows the overall rotation trend, so that the particles with smaller sealing weight move downward along the rotation trend, and particles with insufficient density and self-weight are prevented from overcoming the drag of the airflow and moving toward the wall due to the small centrifugal force they are subjected to; the particles will not change the speed and direction of the airflow in the rising airflow near the center of the cylinder 1, so as to avoid affecting the movement trajectory of other particles that can be separated normally, interfering with the normal airflow field distribution inside the cyclone dust collector, reducing the possibility of turbulence in the originally stable rotating airflow, and improving the stability of the operation of the entire equipment; Among them, the elastic film 144 is fixedly connected to the inside of the threaded groove of the cylinder 1 in a threaded shape. The elastic film 144 is made of PTFE. According to its material characteristics, the PTFE film has an extremely low surface friction coefficient and good flexibility, so that the wind can easily blow it to make it bulge, and due to its sensitivity to wind and the elastic contraction force of the PTFE film itself, different wind forces will cause different bulging arcs of the elastic film 144; under low wind force, the bulging amplitude is small or inconvenient; when the wind force increases, the bulging amplitude increases significantly; at the same time, because the close arrangement between PTFE molecular chains can disperse the stress generated by the collision, the PTFE film has a high strength and can withstand a certain degree of particle collision to avoid damage to the elastic film 144; The push rod 141 is pushed outward according to the expansion distance of the elastic film 144, and the push rod 141 drives the push member 143 to push the multiple guide members 142 to shrink into the cone 140, and the inner wall slope of the cone 140 is adjusted. For a relatively gentle cone 140, it is convenient for small particles to slowly slide down on the wall of the cone 140, reducing the impact force during the sliding process, and in the sliding process, small particles have more time to adapt to the airflow environment in the ash hopper, reducing the possibility of being lifted up again by the airflow; at the same time, the relatively gentle angle of the cone 140 can also avoid problems such as blockage caused by particle accumulation; for a relatively steep angle of the cone 140, it is helpful for large particles to slide down quickly, reducing the residence time on the wall of the cone 140, and avoiding that they touch the inner wall of the cone 140 during the descent process to generate a large impact force to lift them up again, thereby reducing the risk caused by accumulation; Furthermore, when the plurality of guide members 142 are contracted toward the inside of the cone 140, the inner wall diameter of the cone 140 is reduced, thereby pushing the annular flow assembly 15 to contract upward, thereby changing the vortex airflow of the annular flow to adapt to the centrifugal filtration of particles of different sizes. The guide member 142 includes a guide plate 1420, which is movably connected to the inside of multiple grooves of the cone 140, and a rotating rod 1421 is fixedly connected to the top of the guide plate 1420, and the rotating rod 1421 is movably connected to the inside of the cylinder 1 near the bottom, and a sealing ring 1422 is provided between the top of the guide plate 1420 and the inside of the cylinder 1, and a circulation assembly 15 is movably connected between the multiple guide plates 1420 and the outer wall of the exhaust port 13; See also Figure 3 , Figure 4 ,and Figure 8 As shown, the movement of the push rod 141 drives the lower rack 1433 to move between the two support plates 1430 and the top of the bracket 11, thereby driving the gear 1432 on the lower rack 1433 to rotate, and the gear 1432 rotates to drive the upper rack 1431 to move between the two support plates 1430 in the opposite direction of the movement of the lower rack 1433, so that the upper rack 1431 pushes the guide member 142 to rotate, and the guide direction of the guide member 142 is adjusted; The pusher 143 includes two support plates 1430, the support plates 1430 are fixedly connected to the top of the bracket 11, a gear 1432 is movably connected between the two support plates 1430, an upper rack 1431 is meshedly connected to the top of the gear 1432, a slider on the outer wall of the upper rack 1431 is movably connected between the two support plates 1430, one end of the upper rack 1431 is movably connected to the outer wall of the guide plate 1420, and a lower rack 1433 is meshedly connected to the bottom of the gear 1432, and one end of the lower rack 1433 is fixedly connected to the outer wall of the push rod 141; See also Figure 3 , Figure 4 ,and Figure 7As shown, the guide plate 1420 is pushed by the upper rack 1431 to rotate with the rotating rod 1421 as the center, so that the rotating rod 1421 rotates inside the cylinder 1, and the inclination angle of the guide plate 1420 inside the cone 140 is adjusted. When the angle of the guide plate 1420 changes, the sealing ring 1422 is driven to extend and retract between the top of the guide plate 1420 and the bottom of the cylinder 1, so as to maintain the sealing between the cylinder 1 and the cone 140; at the same time, since the wind speed under different particle sizes is different, the wind speed difference is prioritized and there will not be a large difference, so the expansion size of the elastic film 144 is limited, so that the pushing distance of the push rod 141 is limited, so that the inclination angle between the guide plate 1420 and the cone 140 does not exceed the thickness of the cone 140, thereby avoiding the gap between the guide plate 1420 and the cone 140 when the direction is adjusted, and avoiding exhaust gas leakage; Secondly, the specific structure of the circulation assembly 15 is disclosed. The circulation assembly 15 includes a rotating disk 151, which is fixedly connected to the outer wall of the exhaust port 13 that penetrates into the cylinder 1. A rotating drum 150 is movably connected between the outer wall of the rotating disk 151 and the outer wall of the exhaust port 13 located inside the cylinder 1. A threaded blade 152 is fixedly connected to the bottom of the rotating drum 150. A support ring 153 is fixedly connected to the end of the threaded blade 152. The support ring 153 is movably connected between a plurality of guide plates 1420 and the inner wall of the cone 140. The threaded blade 152 is threaded and made of titanium alloy. According to the material characteristics of titanium alloy, it has high strength and low density, and has good elasticity. Its elastic modulus is slightly lower than that of ordinary steel, but it still has sufficient rigidity, so that the titanium alloy can produce large elastic deformation and strong recovery ability when it is twisted or stretched. Compared with spring steel, titanium alloy has better corrosion resistance. Moreover, the density of titanium alloy is relatively low. When it is made into a spiral blade, its light weight enables it to be blown by wind. When wind acts on the threaded blade 152, the threaded blade 152 can rotate with the wind. See also Figure 3 , Figure 4 ,and Figure 5 As shown, the exhaust gas makes a circular motion inside the cylinder 1, driving the threaded blade 152 to rotate. Since the rotation direction of the threaded blade 152 is designed according to the airflow characteristics in the annular channel and the required circulation direction; its rotation angle can guide the airflow to circulate in the annular channel along a specific direction, so that the airflow forms a stable and orderly circulation flow field in the annular channel, avoiding the turbulent flow of the airflow entering the annular channel, resulting in some particles not being fully separated by the centrifugal force, ensuring that the airflow in the annular channel can maximize the separation effect on the residual particles; The rotating drum 150 and the supporting ring 153 are driven to rotate by the rotation of the threaded blades 152, the rotating position of the rotating drum 150 is limited and supported by the rotating disk 151, and the rotating length of the threaded blades 152 is supported by the rotating drum 150 and the supporting ring 153; when the slope of the plurality of guide plates 1420 becomes gentle, the diameter of the cone 140 will be reduced, thereby pushing the supporting ring 153 to move upward, and the length of the threaded blades 152 is contracted and adjusted, so that the threaded blades 152 can adapt to the rotation and separation of different particles according to the change of their length; In summary, the working principle of this solution is as follows: First, the dust-laden exhaust gas enters the cylinder 1 of the cyclone dust collector tangentially at a specific speed through the air inlet 12, so that the exhaust gas starts to move in a circular motion in the cylinder 1; in this process, the particles in the exhaust gas are thrown toward the wall of the device due to the centrifugal force, and then slide down along the wall under the combined influence of their own gravity and the friction with the wall; at the same time, as the particles are separated, the airflow in the cyclone dust collector is stratified; the airflow close to the cylinder wall carries more particles, while the airflow in the central area flows upward after being purified, thereby maintaining the airflow balance inside the entire cyclone dust collector; the separated exhaust gas is finally discharged upward under the guidance of the exhaust port 13 in the center of the cyclone dust collector; Moreover, when the exhaust gas makes a circular motion inside the cylinder 1, the spiral blades 152 are driven to rotate, so that the airflow forms a stable and orderly circulating flow field in the annular channel; when the exhaust gas wind speed is relatively high, the elastic film 144 inside the spiral groove of the cylinder 1 is pushed to expand outward, and the expanded elastic film 144 and the cylinder 1 together form an annular channel; wherein the surrounding form of the elastic film 144 matches the airflow direction, so that the airflow entering the expanded elastic film 144 can follow the overall rotation trend, and smaller particles will move downward along the rotation trend; The expansion of the elastic film 144 pushes the push rod 141 to move outward, and the movement of the push rod 141 drives the lower rack 1433 to move between the two support plates 1430 and the top of the bracket 11. The movement of the lower rack 1433 causes the gear 1432 thereon to rotate, and the rotation of the gear 1432 drives the upper rack 1431 to move between the two support plates 1430 in the opposite direction to the movement of the lower rack 1433; the movement of the upper rack 1431 drives the guide plate 1420 to rotate with the rotating rod 1421 as the center, so that the rotating rod 1421 rotates inside the cylinder 1 The guide plate 1420 is movable to adjust the inclination angle of the guide plate 1420 inside the cone 140; when the angle of the guide plate 1420 changes, the sealing ring 1422 will expand and contract between the top of the guide plate 1420 and the bottom of the cylinder 1, so as to maintain the sealing between the cylinder 1 and the cone 140; at the same time, when the slope of the multiple guide plates 1420 becomes gentle, the diameter of the cone 140 will decrease, thereby pushing the support ring 153 to move upward, and the length of the threaded blade 152 is contracted and adjusted, so that the threaded blade 152 can adapt to the rotational separation requirements of different particles according to the change of its length.

[0021] Example 2 During the chemical reaction process of chlorinated paraffin production, the reactor, pipelines and other equipment are corroded by chemicals and physically rubbed for a long time, which may produce rust or metal debris. These substances will enter the exhaust gas in the form of large particles. In addition, if the materials at the bottom or corner of the reactor are not stirred properly, they cannot fully participate in the reaction, and then form large particles that are carried out by the exhaust gas. Since large particles have greater inertia and are not easily driven by airflow, they may cause airflow stagnation or vortex formation in local areas, resulting in a significant drop in wind speed when passing through areas near large particles. In addition, large particles may collide or aggregate with each other, further increasing the blocking effect on airflow and reducing the overall wind speed. When the exhaust gas wind speed is low, the elastic film 144 is in a contracted state and will not expand due to the exhaust gas wind force. At the same time, the guide plate 1420 is in a steeper state. Since the large particles have a large mass and a large inertia, they can overcome the upward airflow caused by the turbulence of the bottom airflow during the sliding down the cone 140 wall of the cyclone dust collector. The residence time on the cone 140 wall is reduced, thereby reducing the risk of accumulation. The particles in the exhaust gas are thrown to the wall due to the centrifugal force, and then slide down along the wall under the combined influence of their own gravity and the friction with the wall. The separated exhaust gas is finally discharged upward under the guidance of the exhaust port 13 in the center of the cyclone dust collector.

[0022] Example 3 In the chemical reaction process of chlorinated paraffin production, when the chlorination reaction is incomplete or some side reactions occur, some substances with complex molecular structures and small molecular weights will be produced. These substances may exist in the tail gas in the form of small particles; and excessively high temperatures may also cause some reactants to decompose excessively, forming fine solid particles mixed in the tail gas; Due to the small size of small particles, the scope of their influence on the surrounding airflow field is limited. Generally, there may be a slight change in wind speed within a range of several times of their own diameter, which is much smaller than the range of wind speed affected by large particles. Therefore, in the tail gas of chlorinated paraffin production, the wind speed containing small particles is greater than the tail gas flow rate containing large particles. The push rod 141 is pushed to move outward according to the expansion distance of the elastic film 144, and the movement of the push rod 141 drives the lower rack 1433 to move between the two support plates 1430 and the top of the bracket 11, thereby driving the gear 1432 on the lower rack 1433 to rotate, and the gear 1432 rotates to drive the upper rack 1431 to move between the two support plates 1430 in the opposite direction of the movement of the lower rack 1433, so that the upper rack 1431 drives the flow guide 142 to rotate, and the flow guide direction of the flow guide 142 is adjusted; the guide plate 1420 is driven to rotate with the rotating rod 1421 as the center by the upper rack 1431, so that the rotating rod 1421 rotates inside the cylinder 1, driving the guide plate 1420 to shrink inward inside the cone 140, reducing the diameter of the cone 140, and at the same time reducing the slope of the guide plate 1420; The gentler cone 140 facilitates small particles to slide slowly on the wall of the cone 140, reducing the impact force during the sliding process. During the sliding process, the small particles have more time to adapt to the airflow environment in the ash hopper, reducing the possibility of being lifted up again by the airflow. At the same time, the gentler angle of the cone 140 can also avoid problems such as blockage caused by particle accumulation.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A circulating, directional, exhaust gas filtering device for chlorinated paraffin production, comprising a cyclone dust collector, wherein the cyclone dust collector comprises a bracket (11) and a cylinder (1); characterized in that: The outer wall of the cylinder (1) is fixedly connected to a bracket (11), the top of the cylinder (1) is fixedly connected to an exhaust port (13), and the outer wall of the cylinder (1) near the top is fixedly connected to an air inlet (12); A threaded groove is provided between the outer wall and the inner wall of the cylinder (1); a guide component (14) is fixedly connected between the bottom of the cylinder (1) and the top of the bracket (11); and a circulation component (15) is movably connected between the inner wall of the guide component (14) and the outer wall of the exhaust port (13); The circulation component (15) is used to rotate along the exhaust gas flow direction, and the guide component (14) is used to adaptively adjust the guide arc according to different exhaust gas particle sizes, and to adjust the circulation density of the circulation component (15) while adjusting the guide angle.

2. The circulating directional guided tail gas filtration device for chlorinated paraffin production according to claim 1, characterized in that: The guide assembly (14) comprises a cone (140), the cone (140) being fixedly connected to the bottom of the cylinder (1), a plurality of flow guide members (142) being movably connected between the inner wall of the cone (140) and the interior of the cylinder (1), an elastic film (144) being fixedly connected to the interior of the groove of the cylinder (1), the elastic film (144) passing through the outer wall of the cylinder (1) being fixedly connected to a plurality of push rods (141), a pushing member (143) being fixedly connected between the bottom of the push rod (141) and the top of the bracket (11), and the plurality of pushing members (143) being movably connected to the outer walls of the plurality of flow guide members (142), respectively.

3. The circulating directional guided tail gas filtration device for chlorinated paraffin production according to claim 2, characterized in that: The guide member (142) comprises a guide plate (1420), the guide plate (1420) being movably connected inside a plurality of grooves of the cone (140), a rotating rod (1421) being fixedly connected to the top of the guide plate (1420), the rotating rod (1421) being movably connected inside the cylinder (1) near the bottom, a sealing ring (1422) being provided between the top of the guide plate (1420) and the inside of the cylinder (1), and a circulation assembly (15) being movably connected between the plurality of guide plates (1420) and the outer wall of the exhaust port (13).

4. The circulating directional guided tail gas filtering device for chlorinated paraffin production according to claim 2, characterized in that: The pushing member (143) comprises two supporting plates (1430), wherein the supporting plates (1430) are fixedly connected to the top of the bracket (11), a gear (1432) is movably connected between the two supporting plates (1430), the top of the gear (1432) is meshingly connected to an upper rack (1431), a slider on the outer wall of the upper rack (1431) is movably connected between the two supporting plates (1430), one end of the upper rack (1431) is movably connected to the outer wall of the guide plate (1420), the bottom of the gear (1432) is meshingly connected to a lower rack (1433), and one end of the lower rack (1433) is fixedly connected to the outer wall of the push rod (141).

5. The circulating directional guided tail gas filtering device for chlorinated paraffin production according to claim 2, characterized in that: The elastic film (144) is threadedly fixedly connected to the inside of the thread groove of the cylinder (1), and the elastic film (144) is made of PTFE.

6. The circulating directional guided tail gas filtering device for chlorinated paraffin production according to claim 3 is characterized in that: The circulation assembly (15) comprises a rotating disk (151), the rotating disk (151) being fixedly connected to the outer wall of the exhaust port (13) penetrating into the interior of the cylinder (1), a rotating drum (150) being movably connected between the outer wall of the rotating disk (151) and the outer wall of the exhaust port (13) located inside the cylinder (1), a threaded blade (152) being fixedly connected to the bottom of the rotating drum (150), a support ring (153) being fixedly connected to the end of the threaded blade (152), and the support ring (153) being movably connected between a plurality of guide plates (1420) and the inner wall of the cone (140).

7. The circulating directional guided tail gas filtering device for chlorinated paraffin production according to claim 6, characterized in that: The threaded blade (152) is in a threaded shape, and the threaded blade (152) is made of titanium alloy.

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