Tail gas detection device used in chlorinated paraffin production process

Abstract

The invention relates to the technical field of chlorinated paraffin production, in particular to a tail gas detection device used in the chlorinated paraffin production process. The device comprises a non-dispersive infrared analyzer, pipelines are fixedly connected to the ends of the non-dispersive infrared analyzer and the chlorinated paraffin tail gas emission device, each pipeline is of a soft structure, a cooling assembly is fixedly connected between the two pipelines, and a filtering assembly is fixedly connected into the cooling assembly. And a water guide pipe and a water pumping pipe are respectively arranged between the end part of the cooling assembly and the non-dispersive infrared analyzer. Impurities remaining in the tail gas passing through the filtering assembly are cooled through the cooling assembly; impurities in the tail gas are intercepted through the filtering assembly, and meanwhile, the flowing speed of the tail gas is subjected to flow guide adjustment; the cooling assembly is driven to rotate through the liquidity of the cooling liquid of the cooling assembly, and the filtering assembly is driven to rotate together in the rotating process, so that impurities blocked in the filtering assembly are scratched.

Description

Technical Field

[0001] The invention relates to the technical field of chlorinated paraffin production, in particular to a tail gas detection device used in the chlorinated paraffin production process. Background Art

[0002] Chlorinated paraffin is an important industrial chemical widely used in industries such as plastics, rubber, and coatings. With the development of industry, the demand for chlorinated paraffin is increasing, and its production scale is also expanding. However, a large amount of tail gas is generated during the production of chlorinated paraffin, which contains a variety of harmful substances. Different tail gas transportation methods have different technical characteristics and scope of application. In order to avoid secondary pollution caused by tail gas leakage during detection and transportation, pipeline transmission is usually used.

[0003] The pipeline can directly connect the exhaust emission source and the non-dispersive infrared analyzer, so that the exhaust gas can be quickly transmitted to the non-dispersive infrared analyzer for detection, and the changes in the exhaust gas composition and concentration can be monitored in real time. Compared with other transmission methods, pipeline transmission is relatively stable, which can ensure that the flow rate and pressure of the exhaust gas remain relatively stable within a certain range, which is conducive to the accurate measurement of the non-dispersive infrared analyzer. Measurement errors caused by fluctuations during the transmission process are avoided. In addition, the pipeline can realize continuous exhaust gas transmission, ensuring that the non-dispersive infrared analyzer can continuously obtain exhaust gas samples for analysis without intermittent problems. For the chlorinated paraffin production process that requires long-term monitoring, pipeline transmission can provide reliable monitoring data.

[0004] During the production of chlorinated paraffin, chemical reactions may produce some by-products or incompletely reacted substances, which may exist in the exhaust gas in the form of particles. Existing pipelines for transporting exhaust gas are usually designed mainly for the purpose of transporting exhaust gas, and their structure and function are not specifically designed to remove fine particles. If these fine paraffin particles or other impurities enter the non-dispersive infrared analyzer, they may adhere to its optical lenses, windows and other components. These particles will block the transmission of infrared light and reduce the transmittance of optical components. As impurities accumulate, the transmittance will gradually decrease, thereby affecting the detection accuracy and sensitivity of the non-dispersive infrared analyzer.

[0005] In view of this, the present invention provides a tail gas detection device for use in the production process of chlorinated paraffin. Summary of the invention

[0006] The object of the present invention is to provide a tail gas detection device for use in the production process of chlorinated paraffin to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides an exhaust gas detection device for use in the production process of chlorinated paraffins, including a non-dispersive infrared analyzer, wherein the non-dispersive infrared analyzer and the end of the chlorinated paraffin exhaust gas emission device are both fixedly connected with a pipeline, and the pipeline is a soft structure. A cooling assembly is fixedly connected between the two pipes, a filtering assembly is fixedly connected inside the cooling assembly, and a water guide pipe and a water extraction pipe are respectively provided between the end of the cooling assembly and the non-dispersive infrared analyzer; The filter assembly is used to pre-treat the tail gas entering the non-dispersive infrared analyzer from the chlorinated paraffin tail gas emission device, and the cooling assembly is used to cool the tail gas impurities passing through the filter assembly and clean the filter structure and inner wall inside the filter assembly.

[0008] As a further improvement of the present technical solution, the cooling component includes an outer tube, the inner part of the outer tube is fixedly connected to an inner cavity, a rotating cylinder is movably connected to a groove near one end of the inner cavity, both ends of the rotating cylinder are fixedly connected to piston rings, the piston rings are movably connected to the inner cavity, and the inner wall of the inner cavity is movably connected to a filter component.

[0009] As a further improvement of the technical solution, the outer wall of the rotating drum is fixedly connected with a threaded plate, and the threaded plate is movably connected between the inner wall of the outer tube and the outer wall of the inner cavity. A water guide pipe and a water pumping pipe are provided between one end of the outer tube and the non-dispersive infrared analyzer.

[0010] As a further improvement of the technical solution, the diameters of the outer tube and the inner cavity are both larger than the diameter of the pipeline, and the outer tube and the inner cavity are both made of aluminum alloy.

[0011] As a further improvement of the present technical solution, the filter assembly includes a filter screen, which is fixedly connected to the inner wall of the drum, a flow guide member is fixedly connected to the inner wall of the drum near one end, a reciprocating member is fixedly connected to one end of the drum, and the reciprocating member is movably connected inside the inner cavity.

[0012] As a further improvement of the present technical solution, the reciprocating part includes a groove wheel, which is fixedly connected to one end of the rotating drum, and the groove wheel is movably connected to the inner wall of the inner cavity. The inner wall of the groove wheel is provided with a wavy groove, and a round pin is movably connected inside the groove of the groove wheel. The end of the round pin that passes through the inner wall of the groove wheel is fixedly connected to a scraper ring, and the scraper ring is movably connected inside the groove wheel.

[0013] As a further improvement of the present technical solution, the guide member includes two brackets, the two brackets are symmetrically fixedly connected to the inner wall of the rotating drum, a rotating rod is movably connected inside the bracket, a guide plate is fixedly connected to the outer wall of the rotating rod, the two guide plates are movably connected inside the scraper ring, a plurality of elastic members are fixedly connected inside the groove at one end of the guide plate, a scraper is fixedly connected between the ends of the plurality of elastic members, and the scraper is movably connected between the inside of the guide plate and the end of the filter screen.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The device is used in the tail gas detection device in the production process of chlorinated paraffin. The cooling component is used to cool the impurities remaining in the tail gas that has passed through the filter component. Since the impurities in the tail gas are cooled, the temperature is reduced and their physical state changes, making it easier for paraffin particles and other impurities to condense into larger particles, thereby facilitating filtration and sedimentation, so that they can be intercepted by the filter component. While intercepting impurities in the exhaust gas through the filtering component, the flow velocity of the exhaust gas is also guided and adjusted to ensure that the exhaust gas can flow at an appropriate speed in the subsequent processing links, thereby improving the efficiency and stability of the entire processing process.

[0015] 2. The exhaust gas detection device used in the production process of chlorinated paraffin drives the rotation of the cooling component through the fluidity of the coolant in the cooling component itself, thereby maintaining the uniformity of the internal coolant temperature. During the rotation, the filter component is driven to rotate together, and the impurities blocked inside the filter component are scratched, so that the originally tightly packed impurity structure is disrupted, thereby effectively clearing the impurities blocked inside the filter component, greatly improving the reliability and operation efficiency of the entire exhaust gas treatment system. 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 pretreatment structure of the present invention; Figure 3 It is a schematic diagram of the filtering process structure of the present invention; Figure 4 It is a schematic diagram of the scratch structure of the present invention; Figure 5 It is a schematic diagram of the cooling assembly structure of the present invention; Figure 6 It is a schematic diagram of the structure of the filter assembly of the present invention; Figure 7 It is a schematic diagram of the reciprocating member structure of the present invention; Figure 8 It is a schematic diagram of the structure of the flow guide member of the present invention.

[0017] The meaning of each number in the figure is: 1. Non-dispersive infrared analyzer; 11. Pipeline; 12. Cooling assembly; 120. Outer tube; 121. Inner cavity; 122. Rotating cylinder; 123. Piston ring; 124. Threaded plate; 13. Filter assembly; 130. Filter screen; 131. Reciprocating member; 1310. Groove wheel; 1311. Scraper ring; 1312. Round pin; 132. Guide member; 1320. Bracket; 1321. Guide plate; 1322. Rotating rod; 1323. Scraper; 1324. Elastic member. 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 See also Figure 1-Figure 4 As shown, the purpose of this embodiment is to provide an exhaust gas detection device for use in the production process of chlorinated paraffins, including a non-dispersive infrared analyzer 1, and the ends of the non-dispersive infrared analyzer 1 and the chlorinated paraffin exhaust gas emission device are fixedly connected with a pipe 11, and the pipe 11 is a soft structure. A cooling assembly 12 is fixedly connected between the two pipes 11, a filtering assembly 13 is fixedly connected inside the cooling assembly 12, and a water guide pipe and a water extraction pipe are respectively provided between the end of the cooling assembly 12 and the non-dispersive infrared analyzer 1; The filter assembly 13 is used to pre-treat the tail gas entering the non-dispersive infrared analyzer 1 from the chlorinated paraffin tail gas emission device, and the cooling assembly 12 is used to cool the tail gas impurities passing through the filter assembly 13, and at the same time clean the filter structure and inner wall inside the filter assembly 13; The improvement of this embodiment is that: the tail gas output from the end of the chlorinated paraffin tail gas emission device is transported through the pipeline 11, and the impurities remaining in the tail gas passing through the filter component 13 are cooled by the cooling component 12, so that the paraffin particles and other impurities are more easily condensed into larger particles, thereby facilitating filtering and sedimentation; the impurities in the tail gas are intercepted by the filter component 13, and at the same time, the filter component 13 also guides and adjusts the flow speed of the passing tail gas to ensure that the tail gas can flow at a suitable speed in the subsequent processing link, thereby improving the efficiency and stability of the entire processing flow; The cooling component 12 is driven to rotate by the fluidity of its own coolant to maintain the uniformity of the internal coolant temperature, and during the rotation, the filter component 13 is driven to rotate together, and the impurities blocked in the filter component 13 are scratched, so that the originally tightly packed impurity structure is disrupted, and the impurities blocked in the filter component 13 are cleared, and the tail gas after the impurities are pre-treated is transported to the non-dispersive infrared analyzer 1 through the pipeline 11, and the tail gas is detected and analyzed by the non-dispersive infrared analyzer 1; The working principle of the non-dispersive infrared analyzer 1 is known to those skilled in the art, and is based on the selective absorption of infrared rays by certain gases, and its measurement is based on the Lambert-Beer law, that is, when a parallel monochromatic light beam passes vertically through a uniform non-scattering light-absorbing substance, its absorbance is proportional to the concentration of the light-absorbing substance and the thickness of the absorption layer; Specifically, when the non-dispersive infrared analyzer 1 is working, it will send a modulation signal of a certain frequency to control the infrared light source. The infrared light source emits a specific wavelength of infrared light, which passes through the gas chamber filled with the gas to be tested, where the specific wavelength of light will be absorbed by the gas molecules to be tested, and then selectively transmits through the filter to reach the corresponding infrared detector; the detector measures the intensity of the light energy after absorption, which reflects the strength of the gas absorbing infrared light, and thus reflects the concentration of the gas; thus, the tail gas in the production process of chlorinated paraffin can be detected; First, the specific structure of the cooling assembly 12 is disclosed. The cooling assembly 12 includes an outer tube 120, an inner cavity 121 is fixedly connected inside the outer tube 120, a rotating cylinder 122 is movably connected inside a groove near one end of the inner cavity 121, piston rings 123 are fixedly connected at both ends of the rotating cylinder 122, the piston ring 123 is movably connected inside the inner cavity 121, and a filter assembly 13 is movably connected to the inner wall of the inner cavity 121; The outer wall of the rotating drum 122 is fixedly connected with a threaded plate 124, and the threaded plate 124 is movably connected between the inner wall of the outer tube 120 and the outer wall of the inner cavity 121. A water guide pipe and a water pumping pipe are arranged between one end of the outer tube 120 and the non-dispersive infrared analyzer 1; See also Figure 3 and Figure 5As shown, the cooling liquid is transported between the inner wall of the outer tube 120 and the outer wall of the inner cavity 121 through the water pipe, and the cooling liquid is circulated and recovered through the water pump; wherein the water pipe is powered by a pump, so that the pressure of the cooling liquid in the water pipe is higher than the pressure in the cooling area, and this pressure difference causes the cooling liquid to flow from the source of the water pipe to the part that needs to be cooled; and the water pump is connected to the vacuum pump, so that a negative pressure environment lower than the pressure of the cooling liquid storage container is formed inside the water pump, and according to the principle of pressure balance, the cooling liquid will be sucked from the cooled area through the water pump to the next circulation link; it is convenient to return the cooling liquid that has absorbed heat to the cooling device for cooling treatment, and then re-transport it to the place that needs to be cooled through the water pipe, so as to realize the recycling of the cooling liquid and continuously cool the target; wherein the cooling device such as the cooling liquid storage container and the pump body are installed inside the non-dispersive infrared analyzer 1, and there is a gap between them and the electronic components in the existing non-dispersive infrared analyzer 1 to avoid affecting its detection system; For paraffin particles and many impurities, at higher temperatures, the molecules have higher kinetic energy and the molecular motion is violent. Paraffin particles and impurity molecules move irregularly at high speed in the exhaust gas, and it is difficult for them to gather together after colliding with each other; when the temperature drops, the kinetic energy of the molecules decreases, and the molecular motion becomes relatively slow, which makes it easier for paraffin particles and impurity molecules to attract, collide and gather together, thus forming larger particles; when paraffin particles and impurities condense into larger particles, they are more in line with the particle size range that is easiest to filter by the filter medium, thereby improving the filtration efficiency and making it easier to remove them from the exhaust gas; While the circulating coolant cools and condenses the exhaust gas passing through the inner cavity 121, when the water flow in the water pipe rushes towards the threaded plate 124, the water flow has a certain speed and momentum; according to the momentum theorem, the water flow exerts an impact force on the surface of the threaded plate 124; because the threaded plate 124 has a certain shape and inclination angle, the impact force of the water flow is not perpendicular to the surface of the threaded plate 124, but has a component along the spiral direction of the threaded plate 124; this component force along the spiral direction will generate a torque on the threaded plate 124, causing the threaded plate 124 to rotate around its central axis; the rotation of the threaded plate 124 drives the rotating drum 122 to rotate, and the rotating drum 122 drives the filter assembly 13 to rotate; The diameters of the outer tube 120 and the inner cavity 121 are both larger than the diameter of the pipe 11, and the outer tube 120 and the inner cavity 121 are both made of aluminum alloy. According to the continuity equation A of the fluid 1 v 1 =A 2 v 2 (where A is the cross-sectional area of ​​the pipe 11, and v is the flow rate); when the exhaust gas enters the inner cavity 121 with a larger diameter from the pipe 11 with a smaller diameter, due to the cross-sectional area A of the inner cavity 121 2 Greater than the cross-sectional area A of the original pipe 111 , when the flow rate remains unchanged, the flow rate v of the exhaust gas 2 will be reduced; and a lower flow rate is conducive to the precipitation of impurities; at a higher flow rate, the impurity particles in the exhaust gas will be carried by the airflow and move continuously due to the greater impact of the airflow, and it is difficult to precipitate; when the flow rate is reduced, the airflow's ability to carry the impurity particles is weakened, and the impurity particles are more likely to sink due to gravity; therefore, when impurities pass through the inner cavity 121 between the two pipes 11, they are more likely to settle inside the inner cavity 121, and the exhaust impurities are pre-treated; Secondly, the specific structure of the filter assembly 13 is disclosed. The filter assembly 13 includes a filter screen 130, which is fixedly connected to the inner wall of the drum 122. A flow guide 132 is fixedly connected to the inner wall of the drum 122 near one end thereof. A reciprocating member 131 is fixedly connected to one end of the drum 122. The reciprocating member 131 is movably connected to the inner cavity 121. See also Figure 4 , Figure 6 , Figure 7 ,and Figure 8 As shown, when exhaust gas enters the inner cavity 121, the exhaust gas will be located inside the reciprocating member 131, and the exhaust gas flow speed is adjusted by the guide member 132, and the exhaust gas is guided to the filter 130, and the impurities in the exhaust gas are intercepted by the filter 130; and when the drum 122 rotates, the filter 130, the reciprocating member 131 and the guide member 132 are driven to rotate at the same time, and the reciprocating member 131 rotates to push the guide member 132, so that the guide member 132 rubs against the surface of the filter 130, and the impurities blocked on the surface of the filter 130 are cleared; at the same time, the rotation of the reciprocating member 131 also scrapes and cleans the condensation sticking to its inner wall under the influence of the coolant, so as to avoid clogging by impurities; The reciprocating member 131 includes a sheave 1310, which is fixedly connected to one end of the rotating drum 122, and is movably connected to the inner wall of the inner cavity 121. The inner wall of the sheave 1310 is provided with a wave-shaped groove, and a round pin 1312 is movably connected inside the groove of the sheave 1310. The end of the round pin 1312 that passes through the inner wall of the sheave 1310 is fixedly connected to a scraper ring 1311, and the scraper ring 1311 is movably connected inside the sheave 1310. See also Figure 4 and Figure 7 As shown, the rotating drum 122 rotates to drive the groove wheel 1310 to rotate, and the round pin 1312 contacts and exerts force on the side of the groove of the groove wheel 1310, so that the round pin 1312 reciprocates inside the wave-shaped groove of the inner wall of the groove wheel 1310, and the scraper ring 1311 reciprocates on the inner wall of the groove wheel 1310 through the movement of the round pin 1312, thereby scraping and cleaning the sticky paraffin debris on the inner wall of the groove wheel 1310; The guide member 132 includes two brackets 1320, which are symmetrically fixedly connected to the inner wall of the rotating drum 122, a rotating rod 1322 is movably connected inside the bracket 1320, and a guide plate 1321 is fixedly connected to the outer wall of the rotating rod 1322. The two guide plates 1321 are movably connected inside the scraper ring 1311, and a plurality of elastic members 1324 are fixedly connected inside the groove at one end of the guide plate 1321, and a scraper 1323 is fixedly connected between the ends of the plurality of elastic members 1324, and the scraper 1323 is movably connected between the inside of the guide plate 1321 and the end of the filter screen 130; See also Figure 4 and Figure 8 As shown, the rotating rod 1322 and the guide plate 1321 are driven to expand outward by the elastic force of the return spring (not shown in the figure) between the rotating rod 1322 and the bracket 1320, so that the two guide plates 1321 form a guiding effect from large to small inside the groove wheel 1310, so that the exhaust gas flow rate passing through the two guide plates 1321 is gradually reduced, the energy of the exhaust gas is gradually dispersed, the impact force on the filter device is reduced, the structural integrity of the filter device is protected, the frequency of equipment maintenance and replacement is reduced, and the high-speed exhaust gas may be prevented from carrying a large number of particles to the filter medium quickly. If a large number of particles are accumulated on the surface of the filter medium in a short time, it is easy to cause blockage; the guiding process from large to small flow rate allows the particles to have more opportunities to settle or disperse before reaching the filter medium, avoiding excessive accumulation of particles on the surface of the filter medium, thereby reducing the possibility of clogging the filter medium and extending the service life of the filter medium; At the same time, the scraper 1323 is pushed against the surface of the filter screen 130 by the rebound force of the elastic member 1324; when the scraper ring 1311 moves to the ends of the two guide plates 1321, the curvature of its inner wall exerts pressure on the curvature of the outer wall of the guide plate 1321, so that the guide plate 1321 flips inward along the curvature of the inner wall of the scraper ring 1311, and drives the rotary spring (not shown in the figure) to rotate, and adjusts the direction of the guide plate 1321 and the scraper 1323, so that the scraper 1323 scrapes against the filter screen 130, cleans the impurities blocked on the filter screen 130, and after the scraper ring 1311 passes through the two guide plates 1321, the guide direction of the guide plate 1321 is reset by the rebound force of the rotary spring (not shown in the figure).

[0021] In summary, the working principle of this solution is as follows: First, the tail gas output from the end of the chlorinated paraffin tail gas emission device is transported through the pipeline 11; at the same time, the water pipe is responsible for transporting the coolant between the inner wall of the outer tube 120 and the outer wall of the inner cavity 121, and the water pumping pipe circulates and recovers the coolant; during the coolant circulation process, the circulating coolant will cool and condense the tail gas passing through the inner cavity 121; during this period, when the water flow in the water pipe rushes towards the threaded plate 124, the force generated by the water flow causes the threaded plate 124 to rotate around its central axis; and the rotation of the threaded plate 124 will drive the rotating drum 122 to rotate, and the rotation of the rotating drum 122 will further drive the groove wheel 1310 to rotate; When the groove wheel 1310 rotates, the round pin 1312 contacts the side of the groove of the groove wheel 1310 and exerts a force on it; under the action of this force, the round pin 1312 reciprocates inside the wavy groove body of the inner wall of the groove wheel 1310; as the round pin 1312 moves, it drives the scraper ring 1311 to reciprocate on the inner wall of the groove wheel 1310, so that the paraffin debris adhering to the inner wall of the groove wheel 1310 can be scraped and cleaned; By relying on the elastic force of the return spring (not shown in the figure) between the rotating rod 1322 and the bracket 1320, the rotating rod 1322 and the guide plate 1321 are driven to expand outward; in this way, the two guide plates 1321 form a guide effect from large to small inside the groove wheel 1310, so that the exhaust gas flow rate passing through the two guide plates 1321 is gradually reduced; In addition, the scraper 1323 is pushed by the rebound force of the elastic member 1324, so that its top end is tightly pressed against the surface of the filter screen 130; when the scraper ring 1311 moves to the ends of the two guide plates 1321, the curvature of the inner wall of the scraper ring 1311 will exert pressure on the curvature of the outer wall of the guide plate 1321; under the action of this pressure, the guide plate 1321 will flip inward along the curvature of the inner wall of the scraper ring 1311, and drive the rotary spring (not shown in the figure) to rotate; this rotation can adjust the direction of the guide plate 1321 and the scraper 1323, so that the scraper 1323 can scrape against the surface of the filter screen 130 and clean the impurities blocked on the filter screen 130; after the scraper ring 1311 passes through the two guide plates 1321, under the action of the rebound force of the rotary spring (not shown in the figure), the guide direction of the guide plate 1321 returns to the initial state, and so on.

[0022] 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 tail gas detection device for use in a chlorinated paraffin production process, comprising a non-dispersive infrared analyzer (1), wherein the non-dispersive infrared analyzer (1) and the end of a chlorinated paraffin tail gas emission device are both fixedly connected with a pipe (11), wherein the pipe (11) is a soft structure, and is characterized in that: A cooling assembly (12) is fixedly connected between the two pipes (11), a filtering assembly (13) is fixedly connected inside the cooling assembly (12), and a water guide pipe and a water extraction pipe are respectively provided between the end of the cooling assembly (12) and the non-dispersive infrared analyzer (1); The filter assembly (13) is used to pre-treat the exhaust gas entering the non-dispersive infrared analyzer (1) from the chlorinated paraffin exhaust gas emission device, and the cooling assembly (12) is used to cool the exhaust gas impurities passing through the filter assembly (13) and to clean the filter structure and inner wall inside the filter assembly (13).

2. The tail gas detection device for the production process of chlorinated paraffin according to claim 1, characterized in that: The cooling component (12) comprises an outer tube (120), the inner part of the outer tube (120) is fixedly connected to an inner cavity (121), a rotating cylinder (122) is movably connected to the inner part of a groove near one end of the inner cavity (121), both ends of the rotating cylinder (122) are fixedly connected to piston rings (123), the piston ring (123) is movably connected to the inner part of the inner cavity (121), and the inner wall of the inner cavity (121) is movably connected to the filter component (13).

3. The tail gas detection device for the production process of chlorinated paraffin according to claim 2, characterized in that: The outer wall of the rotating drum (122) is fixedly connected to a threaded plate (124), and the threaded plate (124) is movably connected between the inner wall of the outer tube (120) and the outer wall of the inner cavity (121). A water guide pipe and a water pumping pipe are provided between one end of the outer tube (120) and the non-dispersive infrared analyzer (1).

4. The tail gas detection device for the production process of chlorinated paraffin according to claim 3, characterized in that: The diameters of the outer tube (120) and the inner cavity (121) are both greater than the diameter of the pipeline (11), and the outer tube (120) and the inner cavity (121) are both made of aluminum alloy.

5. The tail gas detection device for the production process of chlorinated paraffin according to claim 2, characterized in that: The filter assembly (13) comprises a filter screen (130), the filter screen (130) being fixedly connected to the inner wall of a rotating drum (122), a flow guide member (132) being fixedly connected to the inner wall of the rotating drum (122) near one end thereof, a reciprocating member (131) being fixedly connected to one end of the rotating drum (122), and the reciprocating member (131) being movably connected inside the inner cavity (121).

6. The tail gas detection device for the production process of chlorinated paraffin according to claim 5, characterized in that: The reciprocating member (131) comprises a groove wheel (1310), wherein the groove wheel (1310) is fixedly connected to one end of the rotating drum (122), and the groove wheel (1310) is movably connected to the inner wall of the inner cavity (121). The inner wall of the groove wheel (1310) is provided with a wavy groove, and a round pin (1312) is movably connected inside the groove of the groove wheel (1310). The end of the round pin (1312) that passes through the inner wall of the groove wheel (1310) is fixedly connected to a scraper ring (1311), and the scraper ring (1311) is movably connected inside the groove wheel (1310).

7. The tail gas detection device for the production process of chlorinated paraffin according to claim 6, characterized in that: The guide member (132) comprises two brackets (1320), the two brackets (1320) are symmetrically fixedly connected to the inner wall of the rotating drum (122), the brackets (1320) are movably connected to a rotating rod (1322) inside, the outer wall of the rotating rod (1322) is fixedly connected to a guide plate (1321), the two guide plates (1321) are movably connected inside a scraper ring (1311), a plurality of elastic members (1324) are fixedly connected inside a groove at one end of the guide plate (1321), a scraper (1323) is fixedly connected between the ends of the plurality of elastic members (1324), and the scraper (1323) is movably connected between the inside of the guide plate (1321) and the end of the filter screen (130).

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