An exhaust gas filtration device for the production of chlorinated paraffin with cyclic directional guidance

Abstract

The present invention relates to the technical field of chlorinated paraffin tail gas filtration, and specifically, to a tail gas filtration device for chlorinated paraffin production with cyclic directional guidance. It includes a support fixedly connected to the outer wall of the cylinder body, an exhaust port fixedly connected to the top of the cylinder body, and an air inlet fixedly connected to the outer wall of the cylinder body near the top; there is a threaded groove between the outer wall and the inner wall of the cylinder body, and a guiding component is fixedly connected between the bottom of the cylinder body and the top of the support. A circulating component is movably connected between the inner wall of the guiding component and the outer wall of the exhaust port. After the tail gas enters the cylinder body through the air inlet, the flowing air body drives the circulating component to rotate to guide the circulation direction of the air flow, making the air flow field in the annular channel stable and orderly, preventing disorder; at the same time, the guiding component drains the centrifugally rotating tail gas impurities downward, conducts double-layer filtration according to the particle size and adaptively adjusts the guiding direction, and also pushes the circulating component to change the rotation length to adjust the vortex air flow, adapting to the centrifugal filtration requirements of different particles.

Description

Technical Field

[0001] The present invention relates to the technical field of chlorinated paraffin tail gas filtration, and more specifically, to a tail gas filtration device for chlorinated paraffin production with cyclic directional guidance. Background Art

[0002] Tail gas is generated during the production of chlorinated paraffin, and this tail gas contains various pollutants, such as acidic gases (hydrogen chloride, etc.), organic chlorides, and solid particulate matters, etc. If directly discharged without treatment, it will cause serious harm to the environment, such as leading to acid rain, photochemical smog, endangering human health, and destroying the ecological balance, etc. Therefore, it is very necessary to effectively filter and treat the tail gas for chlorinated paraffin production.

[0003] In tail gas treatment, various filtration devices are usually used, and the usage order of various devices needs to be determined according to the tail gas composition, characteristics, and treatment requirements. If considering particulate removal first and gradually refining, first use a cyclone dust collector to preliminarily separate large particle solids, then select a bag filter or an electrostatic precipitator to further remove particulate matters, then let the tail gas enter a venturi scrubber to remove acidic gases and some residual particulate matters, etc., and then send the tail gas into a packed tower to remove acidic gases, and finally use an activated carbon adsorber to adsorb organic pollutants;

[0004] If considering gas component removal first, when acidic gases have a great impact, a packed tower can be used first to remove acidic gases, then an activated carbon adsorber is used to remove organic pollutants, and then a cyclone dust collector or a venturi scrubber is selected according to the situation of solid impurities or other pollutants in the tail gas, and finally a bag filter or an electrostatic precipitator is used to remove solid particulate matters.

[0005] Regarding the use of the cyclone dust collector in the above-mentioned tail gas filtration device; the inner wall of the existing cyclone dust collector is usually relatively smooth, and the air flow rotates in the cylinder relying on the initial rotational force generated by tangential intake. This method results in poor rotational stability of the air flow and is prone to forming local eddies; the existence of eddies not only causes the separated particulate matters to be re-entrained into the air flow, reducing the separation effect, but also leads to a limited residence time of the air flow in the cylinder.

[0006] In view of this, the present invention provides a tail gas filtration device for chlorinated paraffin production with cyclic directional guidance. Summary of the Invention

[0007] The purpose of the present invention is to provide a tail gas filtration device for chlorinated paraffin production with cyclic directional guidance to solve the problems raised in the above background art.

[0008] To achieve the above object, the object of the present invention is to provide an exhaust gas filtering device for the production of chlorinated paraffin with cyclic directional guidance, including a cyclone dust collector, and the cyclone dust collector includes a bracket and a cylinder body; a bracket is fixedly connected to the outer wall of the cylinder body, an exhaust port is fixedly connected to the top of the cylinder body, and an air inlet is fixedly connected to the outer wall of the cylinder body near the top;

[0009] A threaded groove is provided between the outer wall and the inner wall of the cylinder body, a guiding component is fixedly connected between the bottom of the cylinder body and the top of the bracket, and a circulating component is movably connected between the inner wall of the guiding component and the outer wall of the exhaust port;

[0010] The circulating component is used to rotate along the flow direction of the exhaust gas, and the guiding component is used to adaptively adjust the guiding arc according to the size of different exhaust gas particles, and adjust the circulating density of the circulating component while adjusting the guiding angle.

[0011] As a further improvement of the technical solution, the guiding component includes a cone, the cone is fixedly connected to the bottom of the cylinder body, a plurality of guiding members are movably connected between the inner wall of the cone and the inside of the cylinder body, an elastic film is fixedly connected inside the groove of the cylinder body, the elastic film passes through the outer wall of the cylinder body and is fixedly connected with a plurality of push rods, and a pushing member is fixedly connected between the bottom of the push rod and the top of the bracket, and a plurality of the pushing members are respectively movably connected to the outer walls of a plurality of guiding members.

[0012] As a further improvement of the technical solution, the guiding member includes a guide plate, the guide plate is movably connected inside a plurality of grooves of the cone, a rotating rod is fixedly connected to the top of the guide plate, the rotating rod is movably connected to the inside of the cylinder body near the bottom, a sealing ring is provided between the top of the guide plate and the inside of the cylinder body, and a circulating component is movably connected between a plurality of the guide plates and the outer wall of the exhaust port.

[0013] As a further improvement of the 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, an upper rack is meshed with the top of the gear, 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, a lower rack is meshed with the bottom of the gear, and one end of the lower rack is fixedly connected to the outer wall of the push rod.

[0014] As a further improvement of the technical solution, the elastic film is fixedly connected in the threaded groove of the cylinder body in a threaded shape, and the elastic film is made of PTFE material.

[0015] As a further improvement of the technical solution, the circulation component includes a turntable, which is fixedly connected to the outer wall of the exhaust port penetrating into the interior of the cylinder body. 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 body. 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. The support ring is movably connected between a plurality of guide plates and the inner wall of the cone.

[0016] As a further improvement of the technical solution, the threaded blade is in a threaded shape and is made of titanium alloy material.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the tail gas filtering device for the production of chlorinated paraffin with cyclic directional guidance, when the tail gas enters the cylinder through the air inlet, the flowing air body can drive the circulation component to rotate, thereby guiding the circulation direction of the air flow, promoting the construction of a stable and orderly circulation flow field in the annular channel, preventing the air flow entering the annular channel from generating disorderly flow, and avoiding the situation that some particulate matters cannot be fully affected by the centrifugal force and thus cannot be effectively separated due to the disorder of the air flow.

[0019] At the same time, the guiding component will perform a downward drainage operation on the tail gas impurities in the centrifugal rotation state. During this process, double-layer filtration is carried out according to the particle size of the tail gas impurities, and the guiding direction can be adaptively adjusted. In addition, the guiding component will also push the circulation component to change its rotation length, thereby adjusting the vortex air flow formed by the circulation to make it adapt to the centrifugal filtration requirements of different particle sizes.

[0020] 2. In the tail gas filtering device for the production of chlorinated paraffin with cyclic directional guidance, during the production process of chlorinated paraffin, the particle size of the tail gas will vary due to different production states. By the guiding component sensing the change in the particle size of the tail gas and adapting by adjusting its own guiding angle direction, the information about the particle size in the tail gas can be inferred in reverse; timely understanding of the problems existing in the production process of chlorinated paraffin, so that the production personnel can quickly make adjustments according to this information, thereby ensuring the high efficiency and stability of the production process of chlorinated paraffin. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the large particle guiding structure of the present invention;

[0024] Figure 4 Schematic diagram of the small particle guiding structure of the present invention;

[0025] Figure 5 Schematic diagram of the circulation component structure of the present invention;

[0026] Figure 6 Schematic diagram of the guiding component structure of the present invention;

[0027] Figure 7 Schematic diagram of the flow guiding member structure of the present invention;

[0028] Figure 8 Schematic diagram of the driving member structure of the present invention.

[0029] The meanings of the various reference numerals in the figure are as follows:

[0030] 1, cylinder body; 11, bracket; 12, air inlet; 13, exhaust port;

[0031] 14, guiding component; 140, cone; 141, push rod; 142, flow guiding member; 1420, guide plate; 1421, rotating rod; 1422, sealing ring; 143, driving member; 1430, support plate; 1431, upper rack; 1432, gear; 1433, lower rack; 144, elastic film;

[0032] 15, circulation component; 150, rotating cylinder; 151, turntable; 152, threaded blade; 153, support ring. Specific embodiments

[0033] The following will clearly and completely describe the technical solutions in the present invention with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] Embodiment 1

[0036] Please refer to Figures 1-4As shown in the figure, the purpose of this embodiment is to provide an exhaust gas filtering device for the production of chlorinated paraffin with cyclic directional guidance, which includes a cyclone dust collector. The cyclone dust collector includes a bracket 11 and a cylinder body 1; the outer wall of the cylinder body 1 is fixedly connected to the bracket 11, the top of the cylinder body 1 is fixedly connected to an exhaust port 13, and the outer wall of the cylinder body 1 near the top is fixedly connected to an air inlet 12;

[0037] There is a threaded groove between the outer wall and the inner wall of the cylinder body 1. A guiding component 14 is fixedly connected between the bottom of the cylinder body 1 and the top of the bracket 11. A circulating component 15 is movably connected between the inner wall of the guiding component 14 and the outer wall of the exhaust port 13;

[0038] The circulating component 15 is used to rotate along the flow direction of the exhaust gas. The guiding component 14 is used to adaptively adjust the guiding arc according to the size of different exhaust gas particles, and adjust the circulating density of the circulating component 15 while adjusting the guiding angle;

[0039] The improvement of this embodiment is that the exhaust gas is introduced through the air inlet 12, so that the flowing air body of the exhaust gas drives the circulating component 15 to rotate, guiding the circulation direction of the air flow, and forming a stable and orderly secondary circulation flow field in the annular channel, avoiding the disordered flow of the air flow entering the annular channel, resulting in some particulate matters not being fully affected by the centrifugal force and being separated;

[0040] The guiding component 14 is used to downwardly drain the exhaust gas impurities during centrifugal rotation, and at the same time perform double-layer filtration according to the particle size of the exhaust gas impurities, and adaptively adjust the guiding direction; and timely understand the particle size in the exhaust gas according to the angle change, and understand the problems generated during the production of chlorinated paraffin according to different particle sizes, so as to make timely adjustments; at the same time, the change of the guiding component 14 will push the circulating component 15 to perform telescopic adjustment inside the cylinder body 1, change the spiral length of the circulating component 15, so as to change the vortex air flow of the circulation and adapt to the centrifugal filtration of different sizes of particles;

[0041] First, the specific structure of the guiding component 14 is disclosed. The guiding component 14 includes a cone 140, the cone 140 is fixedly connected to the bottom of the cylinder body 1, and a plurality of guiding members 142 are movably connected between the inner wall of the cone 140 and the inside of the cylinder body 1. An elastic film 144 is fixedly connected inside the groove of the cylinder body 1. The elastic film 144 passes through the outer wall of the cylinder body 1 and is fixedly connected to a plurality of push rods 141. A pushing member 143 is fixedly connected between the bottom of the push rod 141 and the top of the bracket 11. A plurality of pushing members 143 are respectively movably connected to the outer walls of a plurality of guiding members 142;

[0042] Refer to Figure 3 、 Figure 4 And Figure 6As shown, the tail gas is introduced into the cylinder body 1 through the air inlet 12. According to the working principle of the existing cyclone dust collector, the dust-containing gas enters the cylinder body 1 of the cyclone dust collector at a certain speed through the tangential air inlet 12; when the gas enters tangentially at high speed, according to the principle of fluid mechanics, the air flow is forced to move in a circular motion inside the cylinder body 1; as a result, the particulate matter in the tail gas is thrown towards the wall of the device, and under the action of its own gravity and the friction force with the wall, it slides down along the wall of the device.

[0043] At the same time, during the process of particulate matter separation, the air flow inside the cyclone dust collector will show a stratification phenomenon; the outer layer of air flow is close to the cylinder wall. This part of the air flow carries more particulate matter, and due to the continuous separation of particulate matter, its speed will gradually decrease; while the central area is the rising inner layer of air flow. After being purified, this part of the air flow is relatively clean, and its upward flow is to maintain the air flow balance inside the entire cyclone dust collector; the purified gas after separation is discharged upward under the guidance of the exhaust port 13 at the center of the cyclone dust collector.

[0044] The rotation of the circulation component 15 is driven by the circular motion of the tail gas inside the cylinder body 1. At the same time, when the particles move in the air flow, a wake will be formed behind them; the wake formed by large particles has a greater influence range and intensity on the surrounding air flow, which will interfere with the flow of the subsequent air flow, resulting in an uneven air flow velocity distribution in the wake area and a relatively low overall velocity; the wake formed by small particles has a relatively small influence and less interference on the surrounding air flow, so the air flow around small particles can be closer to the velocity of the original air flow, thus causing different wake air flow velocities for particles of different sizes.

[0045] According to the different particle sizes, the rotational wind speed inside the cylinder body 1 is different. When the wind speed is relatively high, it will push the elastic film 144 inside the spiral groove of the cylinder body 1 to expand outward, so that the expanded elastic film 144 and the cylinder body 1 together construct an annular channel. By matching the form of the elastic film 144 in a circular manner with the air flow direction, the air flow entering the inside of the expanded elastic film 144 can conform to the overall rotational trend, enabling the smaller sealed particles to move downward along the rotational trend, avoiding particles with insufficient density and self-weight, which are difficult to move towards the wall due to the small centrifugal force they receive and the drag force of the air flow; enabling the particles in the rising air flow near the center of the cylinder body 1 not to change the speed and direction of the air flow, preventing them from affecting the movement trajectories of other particles that can be normally separated, interfering with the normal air flow field distribution inside the cyclone dust collector, and reducing the possibility of the originally stable rotational air flow generating turbulence, thereby improving the stability of the operation of the entire device.

[0046] Among them, the elastic film 144 is fixedly connected in a spiral shape inside the thread groove of the cylinder body 1. The elastic film 144 is made of PTFE. According to its material properties, the PTFE film material has an extremely low surface friction coefficient and good flexibility, enabling the wind to easily blow it up. And due to its sensitivity to wind and the elastic contraction force of the PTFE film material itself, different wind forces will cause the elastic film 144 to have different bulging arcs. Under a smaller wind force, the bulging amplitude is smaller or inconvenient; when the wind force increases, the bulging amplitude increases significantly. At the same time, since the close arrangement between PTFE molecular chains can disperse the stress generated by collisions, the PTFE film material has a high strength and can withstand a certain degree of particle collision to avoid damage to the elastic film 144.

[0047] Push the push rod 141 to move outward according to the expansion distance of the elastic film 144. Drive the pushing member 143 through the push rod 141 to push a plurality of guide members 142 to contract towards the inside of the cone 140, and adjust the inner wall slope of the cone 140. 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 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 re-entrained by the airflow. At the same time, the relatively gentle cone 140 angle can also avoid problems such as blockage caused by particle accumulation. For a relatively steep cone 140 angle, it helps large particles to slide down quickly, reducing the residence time on the wall of the cone 140, and avoiding the generation of a large impact force when they touch the inner wall of the cone 140 during the descent process, so as to reduce the risk of re-entrainment caused by accumulation.

[0048] Moreover, during the process of a plurality of guide members 142 contracting towards the inside of the cone 140, since the inner wall diameter of the cone 140 shrinks, the circulation component 15 is pushed to contract upward, changing the vortex airflow of the circulation to adapt to the centrifugal filtration of particles of different sizes.

[0049] Among them, the guide member 142 includes a guide plate 1420. The guide plate 1420 is movably connected inside a plurality of grooves of the cone 140. A rotating rod 1421 is fixedly connected to the top of the guide plate 1420. The rotating rod 1421 is movably connected near the bottom inside the cylinder body 1. A sealing ring 1422 is provided between the top of the guide plate 1420 and the inside of the cylinder body 1. A circulation component 15 is movably connected between the outer wall of a plurality of guide plates 1420 and the exhaust port 13.

[0050] Refer to Figure 3 、 Figure 4 、and Figure 8As shown in the figure, 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 rotation of the gear 1432 on the lower rack 1433. The rotation of the gear 1432 drives 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 flow guide member 142 to rotate and adjusts the flow guide direction of the flow guide member 142.

[0051] The pusher 143 includes two support plates 1430, which are fixedly connected to the top of the bracket 11. A gear 1432 is movably connected between the two support plates 1430. The top of the gear 1432 is meshed and connected with an upper rack 1431. The 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. The bottom of the gear 1432 is meshed and connected with a lower rack 1433, and one end of the lower rack 1433 is fixedly connected to the outer wall of the push rod 141.

[0052] Refer to Figure 3 、 Figure 4 、And Figure 7 As shown in the figure, the upper rack 1431 pushes the guide plate 1420 to rotate around the rotating rod 1421, so that the rotating rod 1421 rotates inside the cylinder 1, adjusts the inclination angle of the guide plate 1420 inside the cone 140, and drives the sealing ring 1422 to expand and contract between the top of the guide plate 1420 and the bottom of the cylinder 1 while the angle of the guide plate 1420 changes, maintaining the sealing between the cylinder 1 and the cone 140. At the same time, since the wind speeds under different particle sizes are different, but the difference in wind speed is small and there will be no large difference, the expansion size of the elastic film 144 is limited. Therefore, the pushing distance of the push rod 141 is limited, so that the inclination angle between the guide plate 1420 and the cone 140 will not exceed the thickness of the cone 140, thus avoiding the gap between the guide plate 1420 and the cone 140 when the guide plate 1420 adjusts its direction and preventing the leakage of exhaust gas.

[0053] Secondly, the specific structure of the circulation component 15 is disclosed. The circulation component 15 includes a turntable 151, which is fixedly connected to the outer wall of the exhaust port 13 penetrating into the cylinder 1. A rotating cylinder 150 is movably connected between the outer wall of the turntable 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 cylinder 150, and a support ring 153 is fixedly connected to the end of the threaded blade 152. The support ring 153 is movably connected between the plurality of guide plates 1420 and the inner wall of the cone 140.

[0054] Among them, the threaded blade 152 is threaded and made of titanium alloy. According to the characteristics of titanium alloy material, it has high strength and low density, and at the same time has good elasticity. And its elastic modulus is slightly lower than that of ordinary steel, but still has sufficient stiffness, so that when titanium alloy is subjected to torsion or tension, it can produce large elastic deformation and has strong recovery ability. Compared with spring steel, titanium alloy has better corrosion resistance. And the density of titanium alloy is relatively low. When made into a spiral fan blade, its light weight enables it to be blown by the wind. When the wind acts on the threaded blade 152, the threaded blade 152 can rotate with the wind.

[0055] Refer to Figure 3 、 Figure 4 、And Figure 5 As shown, by the circular motion of the tail gas inside the cylinder body 1, the threaded blade 152 is driven 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 a stable and orderly circulating flow field is formed in the annular channel, avoiding the disordered flow of the airflow entering the annular channel, resulting in some particulate matter not being fully affected by the centrifugal force and being separated, ensuring that the airflow in the annular channel can maximize the separation effect on the residual particulate matter.

[0056] The rotation of the threaded blade 152 drives the rotation of the rotating cylinder 150 and the support ring 153. The rotation position of the rotating cylinder 150 is limited and supported by the turntable 151, and the rotation length of the threaded blade 152 is supported by the rotating cylinder 150 and the support ring 153. When the slopes of multiple guide plates 1420 become gentler, the diameter of the cone 140 will shrink, thereby pushing the support ring 153 to move upward, adjusting the contraction of the length of the threaded blade 152, so that the threaded blade 152 adapts to different particle rotation separations according to the change of its length.

[0057] In summary, the working principle of this solution is as follows:

[0058] First, the dusty tail gas enters the cylinder body 1 of the cyclone dust collector tangentially at a specific speed through the air inlet 12, so that the tail gas starts to do circular motion inside the cylinder body 1. In this process, the particulate matter in the tail gas is thrown towards the wall of the device due to the centrifugal force, and then slides down along the wall under the combined influence of its own gravity and the friction force with the wall. At the same time, with the separation of the particulate matter, the airflow inside the cyclone dust collector undergoes a stratification phenomenon. The airflow near the cylinder wall carries more particulate matter, while the airflow in the central area flows upward after purification, so as to maintain the airflow balance inside the entire cyclone dust collector. The separated tail gas is finally discharged upward under the guidance of the exhaust port 13 in the center of the cyclone dust collector.

[0059] Meanwhile, while the exhaust gas makes a circular motion inside the cylinder body 1, it drives the spiral blade 152 to rotate, causing the air flow to form a stable and orderly circulating flow field in the annular channel; when the exhaust gas wind speed is relatively high, it pushes the elastic film 144 inside the spiral groove of the cylinder body 1 to expand outwards, and the expanded elastic film 144 and the cylinder body 1 together form an annular channel; the surrounding form of the elastic film 144 matches the air flow direction, enabling the air flow entering the inside of the expanded elastic film 144 to conform to the overall rotation trend, and the smaller particles will move downward along the rotation trend.

[0060] The expansion of the elastic film 144 pushes the push rod 141 to move outwards. 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 on it to rotate, and the rotation of the gear 1432 drives the upper rack 1431 to move between the two support plates 1430 in the direction opposite to the movement of the lower rack 1433; the movement of the upper rack 1431 will push the guide plate 1420 to rotate around the rotating rod 1421, so that the rotating rod 1421 rotates inside the cylinder body 1, realizing the adjustment of the inclination angle of the guide plate 1420 inside the cone 140; while 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 body 1 to maintain the sealing between the cylinder body 1 and the cone 140; at the same time, when the slopes of multiple guide plates 1420 become gentler, the diameter of the cone 140 will shrink, thereby pushing the support ring 153 to move upwards to adjust the length of the spiral blade 152, so that the spiral blade 152 can adapt to the rotational separation requirements of different particles according to the change in its length.

[0061] Embodiment 2

[0062] During the chemical reaction process of chlorinated paraffin production, equipment such as reaction kettles and pipelines are long-term eroded by chemical substances and physically rubbed, and may produce rust or metal debris, and these substances will enter the exhaust gas in the form of large particles; moreover, if the materials at the bottom or corner areas of the reaction kettle are not stirred properly, they cannot fully participate in the reaction, and then form large particles to be carried out by the exhaust gas.

[0063] Due to the large inertia of large particles, it is not easy to be quickly driven by the air flow, and it may cause the stagnation of the air flow or form a vortex in a local area, resulting in a significant decrease in the wind speed when passing through the area near the large particles; moreover, the large particles may collide or aggregate with each other, further increasing the blocking effect on the air flow and reducing the overall wind speed.

[0064] When the exhaust gas wind speed is low, the elastic film 144 is in a contracted state and will not expand under the influence of the exhaust gas wind force. At the same time, the guide plate 1420 is in a steeper state. Since the large particles have a larger mass and greater inertia, they can overcome the upward airflow generated by the disordered bottom airflow during the sliding process on the wall of the cone 140 of the cyclone dust collector, reducing the residence time on the wall of the cone 140, thereby reducing the risk of accumulation. As a result, the particulate matter in the exhaust gas is thrown towards the wall of the device due to the centrifugal force, and then, under the combined influence of its own gravity and the friction force with the wall of the device, it slides downward along the wall of the device. The separated exhaust gas is finally discharged upward under the guidance of the exhaust port 13 at the center of the cyclone dust collector.

[0065] Example 3

[0066] During 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 exhaust gas in the form of small particles. In addition, too high a temperature may also cause some reactants to decompose excessively, forming fine solid particles mixed in the exhaust gas.

[0067] Due to the small volume of the small particles, the range of influence on the surrounding airflow field is limited. Generally, there may be a slight change in the wind speed within a few times of its own diameter. Compared with the range of influence of large particles on the wind speed, it is much smaller. Therefore, in the exhaust gas of chlorinated paraffin production, the wind speed containing small particles is greater than the wind speed of the exhaust gas flow containing large particles.

[0068] Push the push rod 141 to move outward according to the expansion distance of the elastic film 144. Drive the lower rack 1433 to move between the two support plates 1430 and the top of the bracket 11 through the movement of the push rod 141, thereby driving the gear 1432 on the lower rack 1433 to rotate. Drive the upper rack 1431 to move between the two support plates 1430 along the opposite direction of the movement of the lower rack 1433 through the rotation of the gear 1432, so that the upper rack 1431 pushes the guide member 142 to rotate and adjusts the guiding direction of the guide member 142. Push the guide plate 1420 to rotate around the rotating rod 1421 through the upper rack 1431, so that the rotating rod 1421 rotates inside the cylinder 1, driving the guide plate 1420 to contract inward inside the cone 140, reducing the diameter of the cone 140 and at the same time slowing down the slope of the guide plate 1420.

[0069] For the 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 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 re-entrained 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.

[0070] The foregoing has shown and described 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, and the above embodiments and the descriptions in the specification are only preferred examples of the present invention, and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended 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 adjust the circulation density of the circulation component (15) while adjusting the guide arc; The guide assembly (14) comprises a cone (140), the cone (140) is fixedly connected to the bottom of the cylinder (1), a plurality of flow guide members (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 pushing member (143) is fixedly connected between the bottom of the push rod (141) and the top of the bracket (11), and the plurality of pushing members (143) are respectively movably connected to the outer walls of the plurality of flow guide members (142); 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 to the inside of 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); 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 supporting ring (153) being fixedly connected to the end of the threaded blade (152), the supporting ring (153) being movably connected between a plurality of guide plates (1420) and the inner wall of the cone (140); The pushing member (143) includes 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 meshedly connected with 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 meshedly connected with a lower rack (1433), and one end of the lower rack (1433) is fixedly connected to the outer wall of the push rod (141).

2. The circulating directional guided tail gas filtration device for chlorinated paraffin production according to claim 1, 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.

3. The circulating directional guided tail gas filtering device for chlorinated paraffin production according to claim 1, characterized in that: The threaded blade (152) is in a threaded shape and is made of titanium alloy.

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