A highly efficient 1,1-difluoroethane cracking furnace equipment

Abstract

The invention discloses a highly efficient 1,1-difluoroethane cracking furnace equipment, including a shell, a flow bypass system, a tube-and-tube reaction system, a temperature measuring device, and a cracking gas inlet and outlet system, wherein the flow bypass system includes a baffle, and the baffle is in a spiral shape; the tube-and-tube reaction system includes tubes, the tubes are equipped with catalysts, and the ends of the tubes are sealed with a spring support structure for the catalyst part; the cracking gas inlet and outlet system includes a top air inlet pipe box and a bottom discharge pipe box, a gas distributor is installed in the top air inlet pipe box, and a separation and filtering device is installed in the bottom discharge pipe box. The present invention adopts the design of the separation and filtering device, and when the output shaft of the hydraulic cylinder rotates, the cross pipe and the cleaning brush will also rotate synchronously to clean the rectangular filter plate, and the washing liquid is sprayed through the cleaning liquid nozzle, and the cleaning liquid can be sprayed during the cleaning of the rectangular filter plate by the cleaning brush, thereby improving the cleaning effect.

Description

Technical Field

[0001] The invention relates to the technical field of cracking furnaces, and in particular to a highly efficient 1,1-difluoroethane cracking furnace device. Background Art

[0002] Polyvinyl fluoride (PVF) has super weather resistance, durability, good non-adhesion, high mechanical strength and excellent wear resistance. Therefore, it is widely used in various fields such as aviation, aerospace, solar cells, construction, anti-corrosion and packaging. Vinyl fluoride (VF) is particularly important in fluororesin industrial equipment as the main raw material for the production of polyvinyl fluoride (PVF). The present invention provides a high-efficiency 1,1-difluoroethane (R152a) cracking furnace equipment, which is mainly used for the production of vinyl fluoride (VF), thereby providing key raw materials for the production of polyvinyl fluoride.

[0003] In the prior art, a cracking furnace is provided with a separation and filtration device at the bottom discharge position. Under the heating action of the shell side, a cracking reaction occurs to produce vinyl fluoride, hydrogen fluoride and other by-products. The products flow out from the bottom of the tube array. The solid by-products in the products can be filtered out by the separation and filtration device. The separation and filtration device needs to clean the filter screen regularly. In the prior art, it is mainly washed with a large amount of clean water, which has low cleaning efficiency and poor cleaning effect. At the same time, it consumes more water resources, thereby causing a waste of water resources. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides a high-efficiency 1,1-difluoroethane cracking furnace equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An efficient 1,1-difluoroethane cracking furnace device comprises a shell, a bypass system, a tube-and-tube reaction system, a temperature measuring device and a cracking gas inlet and outlet system, wherein the bypass system comprises a baffle plate, and the baffle plate is in a spiral shape;

[0007] The tube-in-tube reaction system comprises tubes, catalysts are installed inside the tubes, and the ends of the tubes are sealed with spring support structures for the catalysts.

[0008] The cracking gas inlet and outlet system comprises a top air inlet pipe box and a bottom outlet pipe box, a gas distributor is installed in the top air inlet pipe box, and a separation and filtering device is installed in the bottom outlet pipe box.

[0009] Preferably, the separation and filtration device includes a first mounting bracket, which is fixed on the inner wall of the shell near the bottom discharge port, and a plurality of rectangular filter plates are rotatably mounted on the first mounting bracket, and a filter net is provided on the rectangular filter plate. A synchronous flipping drive mechanism is provided on the first mounting bracket, and the synchronous flipping drive mechanism is used to drive the synchronous flipping of the plurality of rectangular filter plates, and an active cleaning mechanism is provided under the first mounting bracket, and the active cleaning mechanism is used to clean the rectangular filter plates.

[0010] Preferably, the synchronous flipping drive mechanism includes a worm gear, which is fixed on the mounting shaft of the rectangular filter plate. A worm is mounted at the bottom end of the first mounting bracket and rotated with the worm gear. The worm gear is meshed with the worm, and a first spur gear is fixed at the bottom end of the worm.

[0011] Preferably, the top end of one of the worms extends above the first mounting bracket, a synchronous gear ring is rotatably mounted on the bottom end of the first mounting bracket, and the plurality of first spur gears are all meshed with the synchronous gear ring.

[0012] Preferably, a first bevel gear is fixed to the top of the worm extending above the first mounting bracket, a first power input shaft is rotatably mounted on the housing, a second bevel gear is fixed to one end of the first power input shaft, and the first bevel gear is meshed with the second bevel gear.

[0013] Preferably, the active cleaning mechanism comprises a second mounting bracket located directly below the first mounting bracket, a hydraulic cylinder is rotatably mounted on the top end of the second mounting bracket, a cross tube is rotatably mounted on the output shaft of the hydraulic cylinder, and a cleaning brush is fixed on the cross tube.

[0014] Preferably, a third bevel gear is fixed to the outside of the hydraulic cylinder, a second power input shaft is rotatably mounted on the housing, a fourth bevel gear is fixed to one end of the second power input shaft, and the third bevel gear is meshed with the fourth bevel gear.

[0015] Preferably, a plurality of cleaning liquid nozzles are installed on the transverse tube, the cleaning liquid nozzles are connected to the transverse tube, a telescopic connecting tube is connected to the transverse tube via a second rotating joint, and one end of the telescopic connecting tube away from the second rotating joint is connected to the rotating part of the first rotating joint.

[0016] Preferably, a first pulley is fixed on the transverse tube, a rotating shaft is installed on one side of the output shaft of the hydraulic cylinder, a second pulley is fixed on the rotating shaft, and a synchronous belt is provided between the first pulley and the second pulley.

[0017] Preferably, a second spur gear is fixed to the outside of the rotating shaft, and a vertically arranged rack is fixed to the cylinder body of the hydraulic cylinder, and the rack is meshed with the second spur gear.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The overall structure of the cracking furnace of the invention adopts a vertical fixed tube plate heat exchanger structure, which has the characteristics of simple structure, easy operation and installation, etc.

[0020] 2. The material in the shell of the present invention is fed from the bottom, and the material is discharged from the top to form a complete countercurrent with the cracked part of the material, which has high heat exchange efficiency.

[0021] 3. The tubes of the present invention are equipped with suitable catalysts, which can make 1,1-difluoroethane (R152a) undergo cracking reaction at a suitable temperature. The ends of the tubes are provided with springs or flower plates to support the catalyst, which can prevent carbon accumulation on the surface of the catalyst and extend the service life of the catalyst. The reaction is stable, thus ensuring the stability of the product after the reaction.

[0022] 4. Through the design of the separation and filtration device, the filter on the rectangular filter plate can filter the product. By driving the rectangular filter plate to flip, the top of the filter plate can be facing downward, so that the by-products filtered from the top can fall by gravity, which is convenient for cleaning the filter plate and prevents clogging. The rectangular filter plate is divided into multiple parts to ensure that the rectangular filter plate occupies less space during the flipping process and is not easy to interfere with other objects.

[0023] 5. When one of the worms rotates, the meshing of the first spur gear and the synchronous gear ring can drive the other worms to rotate synchronously. When the worm rotates, it can drive the worm wheel meshing with it to rotate, and then drive the filter plate connected to it to flip, thereby achieving the purpose of driving multiple filter plates to flip synchronously.

[0024] 6. The output shaft of the hydraulic cylinder is rotated and equipped with a horizontal tube, on which a cleaning brush is fixed. Therefore, when the output shaft of the hydraulic cylinder rotates, the horizontal tube and the cleaning brush will also rotate synchronously to clean the rectangular filter plate. The cleaning liquid is sprayed out through the cleaning liquid nozzle, and the cleaning liquid can be sprayed out during the cleaning of the rectangular filter plate by the cleaning brush, thereby improving the cleaning effect.

[0025] 7. When the hydraulic cylinder is shortened, the meshing of the rack and the second spur gear can drive the rotating shaft to rotate, and then drive the cross tube to rotate through the synchronous belt, so that when the hydraulic cylinder is shortened, the cleaning fluid nozzle points downward. The cleaning fluid nozzle will only point upward when cleaning, and it will point downward in other states, which can prevent the reaction products from entering the interior of the cleaning fluid nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is an overall cross-sectional view of the present invention;

[0028] Figure 2 This is a cross-sectional view of the tube array of the present invention;

[0029] Figure 3 A top view of the separation and filtration device of the present invention;

[0030] Figure 4 A bottom view of the separation and filtration device of the present invention;

[0031] Figure 5 It is a front view of the separation and filtration device of the present invention;

[0032] Figure 6 Based Figure 5 Enlarged cross-sectional view of position A in the middle;

[0033] Figure 7 This is a bottom-up perspective view of the separation and filtration device of the present invention;

[0034] Figure 8 for Figure 7 Enlarged detail of position B in the middle;

[0035] Fig. 9 It is a top-down perspective stereoscopic view of the separation and filtration device of the present invention;

[0036] Fig.10 It is a schematic diagram of a synchronous flipping state of multiple rectangular filter plates on the separation and filtration device of the present invention;

[0037] Fig.11 This is an enlarged detail view of the main perspective of the hydraulic cylinder position of the present invention;

[0038] Fig.12 It is an enlarged stereoscopic view of the hydraulic cylinder position of the present invention from a first viewing angle;

[0039] Fig.13 It is an enlarged stereoscopic view of the hydraulic cylinder position of the present invention from a second viewing angle;

[0040] Fig.14 for Fig.13 Enlarged detail image of the middle C position;

[0041] In the figure: 1 shell, 2 baffle, 3 tube array, 301 spring support structure, 4 temperature measuring device, 5 gas distributor, 7 separation and filtering device, 701 first mounting bracket, 702 rectangular filter plate, 703 worm gear, 704 worm, 705 first spur gear, 706 synchronous gear ring, 707 first bevel gear, 708 first power input shaft, 709 second bevel gear, 8 second mounting bracket, 801 hydraulic cylinder, 802 first rotary joint, 803 third bevel gear, 804 second power input shaft, 805 fourth bevel gear, 806 cross pipe, 807 cleaning brush, 808 cleaning liquid nozzle, 809 second rotary joint, 810 telescopic connecting pipe, 9 rotating shaft, 901 second spur gear, 902 synchronous belt, 903 rack. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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. Example 1

[0043] Reference Figure 1-14 , an efficient 1,1-difluoroethane cracking furnace device, including a shell 1, a bypass system, a tube-and-tube reaction system, a temperature measuring device 4, and a cracking gas inlet and outlet system. The bypass system includes a baffle 2, which is in a spiral shape. The baffle 2 is used to increase a more efficient heat exchange effect. According to process requirements, the baffle 2 is designed to be in a spiral shape, thereby solving the problem of easy scaling of hot materials, reducing fluid resistance and fluid fluctuations during flow, and ultimately improving heat exchange efficiency. Of course, according to the characteristics of the hot material, in certain cases, the baffle 2 structure can also be a bow-shaped baffle;

[0044] Temperature measuring device 4, the reaction temperature of the material inside the tube is crucial to the effect of reaction and cracking. The cracking furnace is provided with 4-8 temperature measuring ports on the top tube box. When the tubes are arranged, the tubes should be arranged at the temperature measuring ports, that is, each temperature measuring port should correspond to a tube axially. The temperature measuring ports should be arranged in all directions of the circumference.

[0045] The shell 1 includes a cracking furnace shell body, an inlet and outlet pipe, and a cracking furnace support ear. The shell part is a heating system, and the inside of the shell provides a heat source for the reaction by adding hot materials. In order to effectively control the cracking cost, the hot material can be molten salt or heat transfer oil and other materials, and the material entry temperature should be controlled at 320°C~360°C. In order to improve the heat exchange efficiency of the equipment, the method of feeding from the bottom and discharging from the top is adopted to form a countercurrent method with the medium in the cracking tube for heat exchange. The shell material can be reasonably selected according to the temperature and the characteristics of the selected hot material medium, and generally low alloy steel can be selected.

[0046] The tube-in-tube reaction system includes tubes 3, which are filled with catalysts, and the ends of the tubes 3 are sealed with spring support structures 301 for the catalyst part. The tube specifications are generally selected to have a diameter of about 40mm-70mm, and the tube materials are selected from nickel-based materials. The ends of the upper and lower tubes are connected by fixed tube sheets. The cracking gas of 1,1-difluoroethane (R152a) is carried out from the top of the tubes, and the catalyst part inside the tubes undergoes a cracking reaction under the heating of the shell side to produce vinyl fluoride, hydrogen fluoride and other by-products. The products flow out from the bottom of the tubes. The spring has a conical structure, and the conical spacing is selected according to the length of the tube expansion part to select a suitable stiffness to ensure that the catalyst will not leak from the tubes, thereby increasing the overall permeability. The direction of rotation of the spring and the material of the spring are reasonably selected according to the process requirements and the characteristics of the catalyst. The spring support causes the catalyst to vibrate slightly through the spring structure during the reaction, which can effectively prevent carbon accumulation on the catalyst surface, thereby solving the problem of catalyst deactivation and extending the service life of the catalyst. The spring support is easy to disassemble, providing certain convenient conditions for subsequent maintenance. A flower plate may also be integrally provided at the end of the tube array, with some oblong holes provided on the flower plate, the flow area of ​​the holes being equal to the flow area of ​​the tube array, and a wire mesh laid on the flower plate;

[0047] The cracking gas inlet and outlet system includes a top inlet pipe box and a bottom outlet pipe box, a gas distributor 5 is installed in the top inlet pipe box, and a separation and filtering device 7 is installed in the bottom outlet pipe box;

[0048] The cracking gas enters from the top and reaches the gas distributor 5 by the action of the gravity of the internal pressure gauge. The gas distributor 5 can make the gas evenly distributed into the inside of the tube 3, thereby solving the problem of insufficient cracking amount and excessive by-products caused by uneven heat exchange. When encountering the catalyst at the tube 3 and heating the hot material in the shell, cracking and reaction occur. The products after cracking are vinyl fluoride, hydrogen fluoride and other by-products. After flowing out of the tube, the product enters the bottom discharge pipe box. The bottom pipe box separation and filtration device can separate some organic by-products through the internal wire mesh filter, thereby reducing the subsequent separation cost. The final product is discharged from the outlet system. The flow area of ​​the cracking outlet pipe needs to be larger than the inlet. Example 2

[0049] Reference Figure 1-14 , the difference between this embodiment and embodiment 1 is that the separation and filtration device 7 includes a first mounting bracket 701, the first mounting bracket 701 is fixed on the inner wall of the shell 1 near the bottom discharge port, a plurality of rectangular filter plates 702 are rotatably mounted on the first mounting bracket 701, a filter screen is provided on the rectangular filter plate 702, a synchronous flipping driving mechanism is provided on the first mounting bracket 701, the synchronous flipping driving mechanism is used to drive the synchronous flipping of the plurality of rectangular filter plates 702, and an active cleaning mechanism is provided below the first mounting bracket 701, the active cleaning mechanism is used to clean the rectangular filter plate 702;

[0050] The filter on the rectangular filter plate 702 can filter the product. By turning the rectangular filter plate 702, the top of the filter plate 702 can be turned downward so that the by-products filtered from the top can fall by gravity, making it easy to clean the filter plate 702 and prevent clogging.

[0051] The rectangular filter plate 702 is divided into multiple parts to ensure that the rectangular filter plate 702 occupies less space during the flipping process and is not easy to interfere with other objects. In order to drive the multiple rectangular filter plates 702 to flip synchronously, the synchronous flipping drive mechanism includes a worm gear 703, which is fixed on the mounting shaft of the rectangular filter plate 702. A worm 704 is rotatably mounted at the bottom end of the first mounting bracket 701 and the worm gear 703. The worm gear 703 meshes with the worm 704. A first spur gear 705 is fixed at the bottom end of the worm gear 704, and the top end of one of the worm gears 704 extends above the first mounting bracket 701. A synchronous gear ring 706 is rotatably mounted at the bottom end of the first mounting bracket 701, and multiple first spur gears 705 are all meshed with the synchronous gear ring 706.

[0052] When one of the worm gears 704 rotates, the meshing of the first spur gear 705 and the synchronous gear ring 706 can drive the other worm gears 704 to rotate synchronously. When the worm gear 704 rotates, it can drive the worm wheel 703 meshing with it to rotate, and then drive the filter plate 702 connected to it to flip over, thereby achieving the purpose of driving multiple filter plates 702 to flip synchronously.

[0053] Among them, a first bevel gear 707 is fixed to the top of the worm 704 extending above the first mounting bracket 701, and a first power input shaft 708 is rotatably mounted on the shell 1. A second bevel gear 709 is fixed to one end of the first power input shaft 708, and the first bevel gear 707 is meshed with the second bevel gear 709. The other end of the first power input shaft 708 is power-connected to a driving device arranged outside the shell 1 through a magnetic coupling. Since direct contact is not required, the shell 1 does not need to be punched, and the airtightness of the shell 1 can be ensured. When the first power input shaft 708 rotates, one of the worms 704 is driven to rotate through the meshing of the first bevel gear 707 and the second bevel gear 709. Example 3

[0054] Reference Figure 1-14 The difference between this embodiment and embodiment 2 is that the active cleaning mechanism includes a second mounting bracket 8 located directly below the first mounting bracket 701, a hydraulic cylinder 801 is rotatably mounted on the top of the second mounting bracket 8, a cross tube 806 is rotatably mounted on the output shaft of the hydraulic cylinder 801, and a cleaning brush 807 is fixed on the cross tube 806.

[0055] Among them, a third bevel gear 803 is fixed to the outside of the hydraulic cylinder 801, a second power input shaft 804 is rotatably mounted on the housing 1, a fourth bevel gear 805 is fixed to one end of the second power input shaft 804, the third bevel gear 803 is meshed with the fourth bevel gear 805, and the other end of the second power input shaft 804 is also connected to the driving device arranged outside the housing 1 through a magnetic coupling for power;

[0056] The hydraulic cylinder 801 can drive the cleaning brush 807 to move up and down. When the rectangular filter plate 702 is turned over, it can ensure that there is no interference between the two. The third bevel gear 803 fixed outside the hydraulic cylinder 801 is meshed with the fourth bevel gear 805 on the second power input shaft 804, realizing the transmission of external power to the hydraulic cylinder 801. When the second power input shaft 804 rotates, the hydraulic cylinder 801 will rotate with it through the bevel gear transmission.

[0057] The output shaft of the hydraulic cylinder 801 is rotatably mounted with a transverse tube 806, on which a cleaning brush 807 is fixed. Therefore, when the output shaft of the hydraulic cylinder 801 rotates, the transverse tube 806 and the cleaning brush 807 also rotate synchronously to clean the rectangular filter plate 702.

[0058] Among them, multiple cleaning liquid nozzles 808 are installed on the horizontal tube 806, and the cleaning liquid nozzles 808 are connected to the horizontal tube 806. The horizontal tube 806 is connected with a telescopic connecting tube 810 through a second rotating joint 809. The end of the telescopic connecting tube 810 away from the second rotating joint 809 is connected to the rotating part of the first rotating joint 802. The first rotating joint 802 allows the cleaning liquid to be continuously supplied during the rotation process. The cleaning liquid is sprayed out through the cleaning liquid nozzle 808. The cleaning liquid can be sprayed out during the process of the cleaning brush 807 cleaning the rectangular filter plate 702, thereby improving the cleaning effect.

[0059] Among them, a first pulley is fixed on the cross tube 806, a rotating shaft 9 is installed on one side of the output shaft of the hydraulic cylinder 801, a second pulley is fixed on the rotating shaft 9, a synchronous belt 902 is provided between the first pulley and the second pulley, a second spur gear 901 is also fixed on the outside of the rotating shaft 9, a vertically arranged rack 903 is fixed on the cylinder body of the hydraulic cylinder 801, the rack 903 is meshed with the second spur gear 901, when the hydraulic cylinder 801 is shortened, the meshing of the rack 903 and the second spur gear 901 can drive the rotating shaft 9 to rotate, and then drive the cross tube 806 to rotate through the synchronous belt 902, so that when the hydraulic cylinder 801 is shortened, the cleaning liquid nozzle 808 is downward, and the cleaning liquid nozzle 808 will only be upward when cleaning, and it will be downward in other states, which can prevent the reaction products from entering the interior of the cleaning liquid nozzle 808.

[0060] 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", "axial", "radial", "circumferential" 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 limiting the present invention.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An efficient 1,1-difluoroethane cracking furnace device, comprising a shell (1), a bypass system, a tube-and-tube reaction system, a temperature measuring device (4) and a cracking gas inlet and outlet system, characterized in that: The cracking gas inlet and outlet system comprises a bottom discharge pipe box, in which a separation and filtering device (7) is installed; The separation and filtration device (7) comprises a first mounting bracket (701), the first mounting bracket (701) being fixed on the inner wall of the housing (1) near the bottom discharge port, a plurality of rectangular filter plates (702) being rotatably mounted on the first mounting bracket (701), and filter screens being provided on the rectangular filter plates (702); The first mounting bracket (701) is provided with a synchronous flipping driving mechanism, which is used to drive the multiple rectangular filter plates (702) to flip synchronously, and an active cleaning mechanism is provided below the first mounting bracket (701), which is used to clean the rectangular filter plates (702); The synchronous turning driving mechanism comprises a worm wheel (703), the worm wheel (703) is fixed on the mounting shaft of the rectangular filter plate (702), a worm (704) is rotatably mounted at the bottom end of the first mounting bracket (701) and the worm wheel (703), the worm wheel (703) is meshed with the worm (704), and a first spur gear (705) is fixed at the bottom end of the worm (704); The top end of one of the worm gears (704) extends above the first mounting bracket (701), and a synchronous gear ring (706) is rotatably mounted on the bottom end of the first mounting bracket (701), and a plurality of first spur gears (705) are all meshed with the synchronous gear ring (706).

2. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 1, characterized in that: The cracking gas inlet and outlet system further comprises a top air inlet pipe box, in which a gas distributor (5) is installed, the bypass system comprises a baffle (2), the baffle (2) is in a spiral shape, the tube-in-tube reaction system comprises a tube-in-tube (3), a catalyst is installed inside the tube-in-tube (3), and the end of the tube-in-tube (3) adopts a spring support structure (301) to seal the catalyst part.

3. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 1, characterized in that: A first bevel gear (707) is fixed to the top of the worm (704) extending above the first mounting bracket (701), a first power input shaft (708) is rotatably mounted on the housing (1), a second bevel gear (709) is fixed to one end of the first power input shaft (708), and the first bevel gear (707) is meshed with the second bevel gear (709).

4. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 1, characterized in that: The active cleaning mechanism comprises a second mounting bracket (8) located directly below the first mounting bracket (701), a hydraulic cylinder (801) being rotatably mounted on the top end of the second mounting bracket (8), a transverse tube (806) being rotatably mounted on the output shaft of the hydraulic cylinder (801), and a cleaning brush (807) being fixed on the transverse tube (806).

5. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 4, characterized in that: A third bevel gear (803) is fixed to the outside of the hydraulic cylinder (801), a second power input shaft (804) is rotatably mounted on the housing (1), a fourth bevel gear (805) is fixed to one end of the second power input shaft (804), and the third bevel gear (803) is meshed with the fourth bevel gear (805).

6. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 5, characterized in that: A plurality of cleaning liquid spray heads (808) are mounted on the transverse tube (806), the cleaning liquid spray heads (808) being in communication with the transverse tube (806), a telescopic connecting tube (810) being connected to the transverse tube (806) via a second rotating joint (809), and an end of the telescopic connecting tube (810) away from the second rotating joint (809) being in communication with a rotating portion of the first rotating joint (802).

7. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 6, characterized in that: A first pulley is fixed on the transverse tube (806), a rotating shaft (9) is installed on one side of the output shaft of the hydraulic cylinder (801), a second pulley is fixed on the rotating shaft (9), and a synchronous belt (902) is provided between the first pulley and the second pulley.

8. The efficient 1,1-difluoroethane cracking furnace equipment according to claim 7, characterized in that: A second spur gear (901) is also fixed to the outside of the rotating shaft (9), and a vertically arranged rack (903) is fixed to the cylinder body of the hydraulic cylinder (801), and the rack (903) is meshed with the second spur gear (901).

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