A catalyst preparation device for carbon dioxide assisted ethane dehydrogenation to ethylene

Abstract

The application discloses a catalyst preparation device for preparing ethylene through carbon dioxide assisted ethane dehydrogenation, and relates to the technical field of mixing equipment for preparing ethylene, which comprises a storage protection tank, a storage tank fixedly connected in the storage protection tank and the like. The catalyst preparation device for preparing ethylene through carbon dioxide assisted ethane dehydrogenation reflects sunlight through the storage protection tank, blocks the contact of external high temperature with the concentrated ammonia water, prevents the storage tank from being corroded by blocking sodium acetate through the first plastic inner wall, is convenient for being arranged above a reaction tank, controls the water pressure in the third installation pipe, controls the speed and intensity of water flow sprayed out of the third installation pipe by adjusting the water stirring intensity, using the centrifugal force to control the size of the hole area of the water spraying hole, and in this way, the mixed water with the concentrated ammonia water is sprayed farther, the concentrated ammonia water is distributed more uniformly, and the mixing effect is improved.

Description

A catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene Technical Field

[0001] This invention belongs to the field of ethylene preparation technology, specifically relating to a catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene. Background Technology

[0002] The co-conversion reaction of ethane and carbon dioxide utilizes the weak oxidizing property of carbon dioxide to aid the dehydrogenation of ethane to ethylene, thereby lowering the reaction temperature and improving the selectivity of the ethylene product. The Cr₂O₃-SiO₂ catalyst for the carbon dioxide oxidation of ethane to ethylene facilitates the reaction. This catalyst is prepared using the sol-gel method. Stoichiometric amounts of TEOS and Cr(NO₃)₃·9H₂O are dissolved in ethanol and water. The aqueous solution is added to the ethanol solution under stirring. During mixing and stirring, concentrated ammonia (n(NH₃):n(Cr)₂O) is added. 3+ The mixture was prepared by mixing ammonia (9:1) to obtain a gel, which was then dried and calcined to obtain Cr2O3-SiO2. When adding concentrated ammonia, the concentrated ammonia was only added to the reaction tank, resulting in a relatively concentrated distribution. Water far from the concentrated ammonia could not react fully, and the mixing effect needed to be further improved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a catalyst preparation device for carbon dioxide-assisted ethane dehydrogenation to ethylene that can overcome or partially solve the above problems.

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0005] An apparatus for preparing a catalyst for carbon dioxide-assisted ethane dehydrogenation to ethylene includes a storage and protective tank, and further includes: a storage tank fixedly connected inside the storage and protective tank, wherein multiple sets of the storage tanks are arranged circumferentially inside the storage and protective tank; a feed pipe fixedly connected to the top of the storage tank and communicating with the interior of the storage tank, the feed pipe extending to the top of the storage and protective tank, a sealing cap threaded onto the feed pipe, and a sealing gasket fitted onto the sealing cap; a first rotating shaft rotatably connected to the storage tank, one end of the first rotating shaft located inside the storage tank being fixedly connected to a lever; the storage tank includes a first metal outer wall and a first plastic inner wall; the storage and protective tank includes a second metal outer wall, a polyurethane insulation layer, and a second plastic inner wall, the polyurethane insulation layer being disposed between the second metal outer wall and the second plastic inner wall, and the second metal outer wall, the polyurethane insulation layer, and the second plastic inner wall being fixedly connected; the outer surface of the storage and protective tank is coated with a reflective coating.

[0006] It also includes a mounting box and two conveying pipes fixedly connected to both sides of the mounting box. A first mounting plate is fixedly connected to each of the two conveying pipes, and the first mounting plate is fixedly connected to the storage and protective tank. An auger is rotatably connected inside each of the two conveying pipes, and the spiral blades on the two augers have opposite spiral directions. The inlet at the top of each conveying pipe is connected to the outlet at the bottom of the storage tank. A mounting cover is fixedly connected to the bottom of the mounting box, and a discharge pipe communicating with the mounting cover is fixedly connected to the bottom of each conveying pipe. A discharge cylinder is rotatably connected to the mounting cover, and a first mounting pipe is fixedly connected to the discharge cylinder. The first mounting pipe has a communicating groove communicating with the discharge cylinder, and the first mounting pipe rotates with the storage and protective tank. The system comprises: a water supply assembly, mounted on the first mounting plate, for supplying water to the first mounting pipe; a stirring assembly, mounted inside the first mounting pipe, for stirring concentrated ammonia and water; a third mounting pipe fixedly connected to both sides of the first mounting pipe, the third mounting pipe having spray holes on its wall; a drive unit for driving the auger, the first rotating shaft, and the first mounting pipe to rotate; a connecting plate fixedly connected inside the third mounting pipe, a mounting rod fixedly connected to the connecting plate, a sleeve slidably connected to the mounting rod, a spring fitted on the mounting rod, the two ends of the spring abutting against the mounting rod and the sleeve respectively, and a sealing rod fixedly connected to the outer wall of the sleeve for sealing the spray holes.

[0007] To facilitate the rotation of the first rotating shaft, auger, and first mounting tube, preferably, the drive unit includes a dual-output shaft motor fixedly connected inside the mounting box. The first drive shaft at the bottom of the dual-output shaft motor rotates synchronously with the mounting shafts of the two augers via a bevel gear set. The first drive shaft is fixedly connected to the first mounting tube. A gearbox is fixedly connected to the top of the mounting box. The input end of the gearbox is fixedly connected to the second drive shaft at the top of the dual-output shaft motor. The output end of the gearbox is fixedly connected to a second rotating shaft. The second rotating shaft rotates synchronously with the two first rotating shafts via a sprocket set.

[0008] To improve the mixing effect of concentrated ammonia and water, preferably, the stirring assembly includes a mounting cylinder fixedly connected to the bottom of the first mounting tube, a second mounting tube rotatably connected to the mounting cylinder, and a stirring rod fixedly connected to one end of the second mounting tube extending into the first mounting tube.

[0009] To enable the second mounting tube to rotate, preferably, a turbine blade is fixedly connected to one end of the second mounting tube extending into the mounting cylinder. A water inlet is provided on the side wall of the second mounting tube inside the mounting cylinder, the water inlet being located above the turbine blade. A nozzle is fixedly connected to the side wall of the second mounting tube, and the nozzle sprays water onto the inner wall of the discharge cylinder through the connecting groove.

[0010] To facilitate water delivery into the discharge cylinder, preferably, the water delivery assembly includes a second mounting plate fixedly connected to the side wall of the first mounting plate, a piston cylinder fixedly connected to the bottom of the second mounting plate, a piston plate slidably connected inside the piston cylinder, a crank rotatably connected to the piston plate, a water inlet pipe extending into the water fixedly connected to the input end of the piston cylinder, a drain pipe fixedly connected to the output end of the piston cylinder, and the end of the drain pipe away from the piston cylinder connected to the bottom of the mounting cylinder.

[0011] To prevent the water inlet pipe from becoming clogged, preferably, a filter head is fixedly connected to one end of the water inlet pipe that extends into the water.

[0012] In order to enable the piston plate to slide back and forth, preferably, the bottom of the second mounting plate is rotatably connected to a third rotating shaft, the third rotating shaft and the discharge cylinder rotate synchronously through a spur gear set, and a crankshaft is fixedly connected to the third rotating shaft, the crankshaft being rotatably connected to the end of the crank away from the piston plate.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention reflects sunlight through the storage protective tank, blocking the high temperature of the outside from contacting the concentrated ammonia water; the first plastic inner wall isolates sodium acetate and the first metal outer wall to prevent the storage tank from being corroded; the third installation pipe stirs the water in the pool and uses centrifugal force to control the size of the spray hole area, thereby controlling the water pressure inside the third installation pipe and controlling the force of the water flow spraying out of the third installation pipe, so that the water mixed with concentrated ammonia water is sprayed further and the overall mixing effect is improved. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the internal components of the present invention;

[0016] Figure 3 is a three-dimensional structural schematic diagram of the internal components of the present invention;

[0017] Figure 4 is a cross-sectional view of Figure 3.

[0018] Figure 5 is a second sectional view of Figure 3;

[0019] Figure 6 is an exploded view of Figure 3;

[0020] Figure 7 is a magnified view of part A in Figure 6;

[0021] Figure 8 is a magnified view of part B in Figure 6;

[0022] Figure 9 is a schematic diagram of the structure of the storage protective tank of the present invention;

[0023] Figure 10 is a schematic diagram of the structure of the storage tank of the present invention;

[0024] Figure 11 is an exploded view of the storage and protective container of the present invention;

[0025] Figure 12 is an exploded view of the storage tank of the present invention;

[0026] Figure 13 is a cross-sectional view of the storage and protection tank of the present invention.

[0027] In the diagram: 100, conveying pipe; 101, auger; 102, discharge pipe; 103, bevel gear set; 104, first mounting plate; 105, second mounting plate; 106, mounting cover; 200, storage tank; 201, feed pipe; 202, sealing cover; 203, sealing gasket; 204, first rotating shaft; 205, sprocket set; 206, lever plate; 2011, first metal outer wall; 2012, first plastic inner wall; 300, mounting box; 301, dual output shaft motor; 302, gearbox; 303, second rotating shaft; 400, piston cylinder; 401, piston plate; 402, crank; 403, third rotating shaft; 404, crankshaft; 405, spur gear set; 406. 407. Drain pipe; 408. Inlet pipe; 509. Filter head; 500. Discharge cylinder; 501. First mounting pipe; 502. Mounting cylinder; 503. Second mounting pipe; 504. Connecting groove; 505. Nozzle; 506. Stirring rod; 507. Turbine blade; 508. Inlet hole; 600. Third mounting pipe; 601. Connecting plate; 602. Mounting rod; 603. Spring; 604. Sleeve; 605. Sealing rod; 606. Spray hole; 700. Storage and protection tank; 701. Second metal outer wall; 702. Polyurethane insulation layer; 703. Second plastic inner wall; 704. Reflective coating; 800. Hard water pipe; 801. Spray head; 802. Electric control valve. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings.

[0029] Referring to Figures 1 to 13, a catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene includes a storage and protection tank 700, and further includes: a storage tank 200 fixedly connected inside the storage and protection tank 700, wherein multiple sets of storage tanks 200 are arranged circumferentially within the storage and protection tank 700; a feed pipe 201 communicating with the interior of the storage tank 200 is fixedly connected to the top of the storage tank 200, the feed pipe 201 extends to the top of the storage and protection tank 700, and a sealing cap 202 is threadedly connected to the feed pipe 201. 02 is fitted with a sealing gasket 203; a first rotating shaft 204 is rotatably connected to the storage tank 200, and a lever 206 is fixedly connected to one end of the first rotating shaft 204 located inside the storage tank 200; the storage tank 200 includes a first metal outer wall 2011 and a first plastic inner wall 2012; the storage protective tank 700 includes a second metal outer wall 701, a polyurethane insulation layer 702, and a second plastic inner wall 703, the polyurethane insulation layer 702 being disposed between the second metal outer wall 701 and the second plastic inner wall 703, and the second metal outer wall 701... 1. A polyurethane insulation layer 702 and a second plastic inner wall 703 are fixedly connected; the outer surface of the storage protective tank 700 is coated with a reflective coating 704, and the storage protective tank 700 is filled with cryogenic liquid; it also includes an installation box 300 and two conveying pipes 100 respectively fixedly connected to both sides of the installation box 300, each of the two conveying pipes 100 being fixedly connected to a first mounting plate 104, the first mounting plate 104 being fixedly connected to the storage protective tank 700; each of the two conveying pipes 100 is rotatably connected to an auger 101, and the spirals on the two augers 101 are... The spiral directions of the blades are opposite; the inlet at the top of the conveying pipe 100 is connected to the outlet at the bottom of the storage tank 200; the mounting cover 106 is fixedly connected to the bottom of the mounting box 300, and the bottom of the conveying pipe 100 is fixedly connected to the outlet pipe 102 which communicates with the mounting cover 106; the outlet cylinder 500 is rotatably connected to the mounting cover 106, and the outlet cylinder 500 is fixedly connected to the first mounting pipe 501, which has a connecting groove 504 communicating with the outlet cylinder 500, and the first mounting pipe 501 is rotatably connected to the storage protection tank 700.

[0030] A water delivery assembly is mounted on the first mounting plate 104 for supplying water into the first mounting pipe 501; a stirring assembly is mounted inside the first mounting pipe 501 for stirring concentrated ammonia and water; a third mounting pipe 600 is fixedly connected to both sides of the first mounting pipe 501, and a water spray hole 606 is provided on the pipe wall of the third mounting pipe 600; the mounting box 300 is provided with a drive unit for driving the auger 101, the first rotating shaft 204, and the first mounting pipe 501 to rotate; a connecting plate 601 is fixedly connected inside the third mounting pipe 601, an mounting rod 602 is fixedly connected to the connecting plate 601, a sleeve 604 is slidably connected to the mounting rod 602, a spring 603 is sleeved on the mounting rod 602, the two ends of the spring 603 abut against the mounting rod 602 and the sleeve 604 respectively, and a sealing rod 605 for sealing the water spray hole 606 is fixedly connected to the outer wall of the sleeve 604.

[0031] Referring to Figures 1 to 9, the reflective coating 704 is used to reflect sunlight and reduce the heat transferred from sunlight to the second metal outer wall 701. The polyurethane insulation layer 702 is used to reduce the heat transferred from the second metal outer wall 701 to the second plastic inner wall 703, maintaining the low temperature of the cryogenic liquid. The first metal outer wall 2011 is used to protect the first plastic inner wall 2012, preventing it from expanding and cracking. The first plastic inner wall 2012 is used to prevent sodium acetate from corroding the storage tank 200. The metal outer wall is made of stainless steel, and the reflective coating 704 can be a composite silicate coating. The plastic inner wall can also be replaced with a glass inner wall. The cryogenic liquid can be oil, and the cryogenic liquid can also be stored, keeping the inside of the storage protective tank 700 under vacuum. This invention uses the storage protective tank 700 to reflect sunlight, blocking external high temperatures from contacting the storage tank 200. The first plastic inner wall 2012 stores sodium acetate, preventing it from corroding the storage tank 200, thus facilitating the placement of the storage tank 200 above the reaction tank.

[0032] Referring to Figures 1 to 8, the drive unit rotates the first rotating shaft 204 and the auger 101. The first rotating shaft 204 rotates the deflector plate 206, which in turn rotates the concentrated ammonia water inside the storage tank 200, thus preventing the concentrated ammonia water from falling into the conveying pipe 100. The rotating auger 101 conveys the concentrated ammonia water that falls into the conveying pipe 100 to the discharge pipe 102, where it is discharged into the installation. By controlling the rotation speed of the auger 101, the amount of concentrated ammonia water discharged into the discharge cylinder 500 can be precisely controlled. After water enters the discharge cylinder 500, it is drawn from the pool by the water supply assembly and sent into the discharge cylinder 500 to mix with the concentrated ammonia solution already in the discharge cylinder 500. Then, it flows through the connecting channel 504 into the first installation pipe 501. Inside the first installation pipe 501, a stirring mechanism agitates the water and concentrated ammonia solution, ensuring a more uniform mixture. Finally, the mixed water and concentrated ammonia solution enter the third installation pipe 600 and are discharged into the pool through the spray nozzle 606. Simultaneously, the third installation pipe 600 rotates around the first installation pipe 501, agitating the water inside the pool. Furthermore, the drive unit causes the first mounting tube 501 to rotate at high speed, which in turn causes the third mounting tube 600 to rotate at high speed. As the third mounting tube 600 rotates at high speed, centrifugal force is generated inside. Under the action of this centrifugal force, the two sleeves 604 slide towards the two ends of the third mounting tube 600, thereby causing the sealing rod 605 to slide until the end of the sleeve 604 abuts against the inner wall of the end of the third mounting tube 600. At this point, the spring 603 contracts, and the sealing rod 605 blocks part of the spray hole 606, reducing the area of ​​the spray hole 606, thereby improving... The increased pressure inside the third mounting pipe 600 allows the water mixed with concentrated ammonia to be sprayed further, thereby increasing the diffusion area of ​​the concentrated ammonia. When the first mounting pipe 501 stops rotating, the spring 603 resets, thereby resetting the sleeve 604 and increasing the orifice area of ​​the spray hole 606. Under the action of the liquid level difference, the water mixed with concentrated ammonia in the discharge cylinder 500 flows into the pool, thereby increasing the diffusion of the water containing concentrated ammonia in the pool and making the concentrated ammonia more evenly distributed. It should be noted that an air inlet is provided on the mounting cover 106, and a one-way valve is installed in the air inlet.

[0033] Referring to Figures 1 to 6, the drive unit includes a dual-output shaft motor 301 fixedly connected in the mounting box 300. The first drive shaft at the bottom of the dual-output shaft motor 301 and the mounting shafts of the two sets of augers 101 rotate synchronously through a bevel gear set 103. The first drive shaft is fixedly connected to the first mounting tube 501. A gearbox 302 is fixedly connected to the top of the mounting box 300. The input end of the gearbox 302 is fixedly connected to the second drive shaft at the top of the dual-output shaft motor 301. The output end of the gearbox 302 is fixedly connected to a second rotating shaft 303. The second rotating shaft 303 and the two first rotating shafts 204 rotate synchronously through a sprocket set 205.

[0034] Referring to Figures 1 to 7, the dual-output shaft motor 301 is started. The first drive shaft of the dual-output shaft motor 301 drives the two screw conveyors 101 to rotate via the bevel gear set 103 to transport the material. The first drive shaft also drives the third mounting pipe 600 to rotate via the first mounting pipe 501. At the same time, the second drive shaft of the dual-output shaft drives the gearbox 302 to rotate. The gear set inside the second gearbox 302 is used to amplify the torque. The output end of the gearbox 302 drives the second rotating shaft 303 to rotate. The second rotating shaft 303 drives the two first rotating shafts 204 to rotate via the sprocket set 205. The first rotating shafts 204 drive the dial plate 206 to rotate to stir the concentrated ammonia in the storage tank 200. It should be noted that the diameter of the sprocket on the second rotating shaft 303 is larger than the diameter of the sprocket on the first rotating shaft 204.

[0035] Referring to Figures 1 to 8, the stirring assembly includes a mounting cylinder 502 fixedly connected to the bottom of the first mounting tube 501. A second mounting tube 503 is rotatably connected to the mounting cylinder 502. A stirring rod 506 is fixedly connected to one end of the second mounting tube 503 extending into the first mounting tube 501. A turbine blade 507 is fixedly connected to one end of the second mounting tube 503 extending into the mounting cylinder 502. A water inlet hole 508 is provided on the side wall of the second mounting tube 503 inside the mounting cylinder 502, located above the turbine blade 507. A nozzle 505 is fixedly connected to the side wall of the second mounting tube 503. The nozzle 505 sprays water onto the inner wall of the discharge cylinder 500 through a connecting groove 504. The water supply assembly includes a second mounting plate 105 fixedly connected to the side wall of the first mounting plate 104. A piston cylinder 400 is fixedly connected to the bottom of the mounting plate 105. A piston plate 401 is slidably connected inside the piston cylinder 400. A crank 402 is rotatably connected to the piston plate 401. A water inlet pipe 407 extending into the water is fixedly connected to the input end of the piston cylinder 400. A drain pipe 406 is fixedly connected to the output end of the piston cylinder 400. The end of the drain pipe 406 away from the piston cylinder 400 is connected to the bottom of the mounting cylinder 502. A filter head 408 is fixedly connected to the end of the water inlet pipe 407 extending into the water. A third rotating shaft 403 is rotatably connected to the bottom of the second mounting plate 105. The third rotating shaft 403 and the discharge cylinder 500 rotate synchronously through a spur gear set 405. A crankshaft 404 is fixedly connected to the third rotating shaft 403. The crankshaft 404 is rotatably connected to the end of the crank 402 away from the piston plate 401.

[0036] Referring to Figures 1 to 8, as the discharge cylinder 500 rotates, the discharge cylinder 500 causes the third rotating shaft 403 to rotate via the spur gear set 405. The third rotating shaft 403 causes the crankshaft 404 to rotate. The crankshaft 404 causes the piston plate 401 to slide back and forth inside the piston cylinder 400 via the crank 402, generating positive and negative pressures inside the piston cylinder 400. The negative pressure draws water from the pool through the water inlet pipe 407. The water is filtered through the mesh on the filter head 408 and then enters the piston cylinder 400. Under the action of the positive pressure, it is forced into the drain pipe 406 and then into the mounting cylinder 502, driving the turbine blades 507 to rotate, thereby causing the second mounting pipe 503 to rotate. The second mounting pipe 503 causes... The stirring rod 506 rotates, thereby stirring the water and concentrated ammonia water entering the first installation pipe 501. The water in the installation cylinder 502 enters the second installation pipe 503 through the water inlet hole 508. The water in the second installation pipe 503 is sprayed out through the nozzle 505 and sprayed onto the inner wall of the discharge cylinder 500 through the connecting groove 504, thereby washing away the concentrated ammonia water adsorbed on the inner wall of the discharge cylinder 500. Furthermore, a ratchet mechanism can be set at the connection between the bevel gear set 103 and the auger 101. When the dual output shaft motor 301 rotates in the opposite direction, the water delivery component continues to work and stops discharging concentrated ammonia water into the discharge cylinder 500, thereby completely emptying the water mixed with concentrated ammonia water from the discharge cylinder 500.

[0037] Referring to Figures 1 to 6, a feed pipe 201, which communicates with the inside of the storage tank 200, is fixedly connected to the top of the storage tank 200. A sealing cap 202 is threaded onto the feed pipe 201, and a sealing gasket 203 is fitted onto the sealing cap 202. When the material inside the storage tank 200 is insufficient, the sealing cap 202 is opened, and concentrated ammonia is added into the storage tank 200 through the feed pipe 201. After the addition is completed, the sealing cap 202 is replaced to seal it. The sealing gasket 203 is used to improve the sealing performance between the sealing cap 202 and the feed pipe 201.

[0038] It should be noted that, in this invention, one-way valves are provided on the output end and input end of the piston cylinder 400 and on the discharge pipe 102.

[0039] Referring to Figure 13, further, a three-way electrically controlled valve 802 can be installed on the drain pipe 406, and a hard water pipe 800 can be installed on the storage protective tank 700. The hard water pipe 800 is connected to the electrically controlled valve 802, and the drain end of the hard water pipe 800 extends to the top of the storage protective tank 700 and is fixedly connected to a spray head 801. When the dual output shaft motor 301 rotates in reverse, one of the two electrically controlled valves 802 is opened, allowing the water sprayed from the corresponding piston cylinder 400 to enter the hard water pipe 800. Then, the water is sprayed onto the top of the storage protective tank 700 through the spray head 801, stirring the concentrated ammonia water while cooling the surface of the storage protective tank 700 with water, thereby further improving the cooling effect.

Claims

1. A catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene, comprising a storage and protection tank (700), characterized in that, Also includes: A storage tank (200) is fixedly connected inside the storage protective tank (700). Multiple sets of the storage tanks (200) are arranged in a circular pattern inside the storage protective tank (700). A feed pipe (201) communicating with the inside of the storage tank (200) is fixedly connected to the top of the storage tank (200). The feed pipe (201) extends to the top of the storage protective tank (700). A sealing cap (202) is threaded onto the feed pipe (201). A sealing gasket (203) is fitted onto the sealing cap (202). A first rotating shaft (204) is rotatably connected to the storage tank (200). A lever (206) is fixedly connected to one end of the first rotating shaft (204) inside the storage tank (200). The storage tank (200) includes a first metal outer wall (2011) and a first plastic inner wall (2012). The first metal outer wall (2011) is used to protect the first plastic inner wall (2012) and prevent the first plastic inner wall (2012) from expanding and cracking. The first plastic inner wall (2012) is used to prevent sodium acetate from corroding the storage tank (200). The storage protection tank (700) includes a second metal outer wall (701), a polyurethane insulation layer (702), and a second plastic inner wall (703). The polyurethane insulation layer (702) is disposed between the second metal outer wall (701) and the second plastic inner wall (703), and the second metal outer wall (701), the polyurethane insulation layer (702), and the second plastic inner wall (703) are connected. Two plastic inner walls (703) are fixedly connected; the outer surface of the storage protective tank (700) is coated with a reflective coating (704); it also includes a mounting box (300) and two conveying pipes (100) fixedly connected to both sides of the mounting box (300), each of the two conveying pipes (100) is fixedly connected to a first mounting plate (104), the first mounting plate (104) is fixedly connected to the storage protective tank (700); each of the two conveying pipes (100) is rotatably connected to an auger (101), the spiral blades on the two augers (101) have opposite spiral directions; the inlet at the top of the conveying pipe (100) is connected to the outlet at the bottom of the storage tank (200); fixedly connected to the bottom of the mounting box (300) The mounting cover (106) has a discharge pipe (102) fixedly connected to the bottom of the conveying pipe (100) and communicating with the mounting cover (106); a discharge cylinder (500) is rotatably connected to the mounting cover (106), and a first mounting pipe (501) is fixedly connected to the discharge cylinder (500). The first mounting pipe (501) has a communicating groove (504) communicating with the discharge cylinder (500), and the first mounting pipe (501) is rotatably connected to the storage and protection tank (700); a water delivery assembly is set on the first mounting plate (104) and is used to deliver water into the first mounting pipe (501); a stirring assembly is set in the first mounting pipe (501) and is used to stir concentrated ammonia and water.A third mounting pipe (600) is fixedly connected to both sides of the first mounting pipe (501). A water spray hole (606) is provided on the wall of the third mounting pipe (600). The mounting box (300) is provided with a driving unit for driving the auger (101), the first rotating shaft (204), and the first mounting pipe (501) to rotate. A connecting plate (601) is fixedly connected inside the third mounting pipe (600). An mounting rod (602) is fixedly connected to the connecting plate (601). A sleeve (604) is slidably connected to the mounting rod (602). A spring (603) is sleeved on the mounting rod (602). The two ends of the spring (603) abut against the mounting rod (602) and the sleeve (604) respectively. A sealing rod (605) for sealing the water spray hole (606) is fixedly connected to the outer wall of the sleeve (604).

2. The catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene according to claim 1, characterized in that: The drive unit includes a dual-output shaft motor (301) fixedly connected in the mounting box (300). The first drive shaft at the bottom of the dual-output shaft motor (301) rotates synchronously with the mounting shafts of the two sets of augers (101) through a bevel gear set (103). The first drive shaft is fixedly connected to the first mounting tube (501). A gearbox (302) is fixedly connected to the top of the mounting box (300). The input end of the gearbox (302) is fixedly connected to the second drive shaft at the top of the dual-output shaft motor (301). The output end of the gearbox (302) is fixedly connected to a second rotating shaft (303). The second rotating shaft (303) rotates synchronously with the two first rotating shafts (204) through a sprocket set (205).

3. The catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene according to claim 2, characterized in that: The stirring assembly includes a mounting cylinder (502) fixedly connected to the bottom of a first mounting tube (501), a second mounting tube (503) rotatably connected to the mounting cylinder (502), and a stirring rod (506) fixedly connected to one end of the second mounting tube (503) extending into the first mounting tube (501).

4. The catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene according to claim 3, characterized in that: The second mounting pipe (503) extends into the mounting cylinder (502) and is fixedly connected to one end of a turbine blade (507). The second mounting pipe (503) has a water inlet hole (508) on the side wall inside the mounting cylinder (502). The water inlet hole (508) is located above the turbine blade (507). A nozzle (505) is fixedly connected to the side wall of the second mounting pipe (503). The nozzle (505) sprays water onto the inner wall of the discharge cylinder (500) through the connecting groove (504).

5. The catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene according to claim 4, characterized in that: The water delivery assembly includes a second mounting plate (105) fixedly connected to the side wall of the first mounting plate (104). A piston cylinder (400) is fixedly connected to the bottom of the second mounting plate (105). A piston plate (401) is slidably connected inside the piston cylinder (400). A crank (402) is rotatably connected to the piston plate (401). A water inlet pipe (407) extending into the water is fixedly connected to the input end of the piston cylinder (400). A drain pipe (406) is fixedly connected to the output end of the piston cylinder (400). The end of the drain pipe (406) away from the piston cylinder (400) is connected to the bottom of the mounting cylinder (502).

6. The catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene according to claim 5, characterized in that: A filter head (408) is fixedly connected to one end of the water inlet pipe (407) that extends into the water.

7. The catalyst preparation apparatus for carbon dioxide-assisted ethane dehydrogenation to ethylene according to claim 6, characterized in that: The bottom of the second mounting plate (105) is rotatably connected to a third rotating shaft (403). The third rotating shaft (403) rotates synchronously with the discharge cylinder (500) through a spur gear set (405). A crankshaft (404) is fixedly connected to the third rotating shaft (403). The crankshaft (404) is rotatably connected to the end of the crank (402) away from the piston plate (401).

Images