A reaction apparatus and method for producing ethylene from CO2

Abstract

The application discloses a reaction device for preparing ethylene by converting CO2 and a method thereof, which comprises a workbench plate, a gas collecting mechanism, an electric shock reaction mechanism and a gas suction pump arranged at the top end of the workbench plate; a driving mechanism is arranged at the top end of the gas collecting mechanism; the gas collecting mechanism comprises two groups of gas proportion collecting boxes, a first gas guide pipe and a second gas guide pipe are arranged at the gas inlet end and the gas outlet end of each gas proportion collecting box respectively, the second gas guide pipes of the two groups are communicated through a gas collecting pipe, a connection butterfly valve for controlling conduction is arranged at one end of the gas collecting pipe, the electric shock reaction mechanism is fixedly arranged at the gas outlet end of the gas collecting pipe and communicated with the gas collecting pipe, and the gas suction pump is communicated with the electric shock reaction mechanism. The reaction device is simple to operate, can prevent mismatching of raw gas during proportioning, improves the proportioning accuracy, prevents air from entering when injecting carbon dioxide and a catalyst through a sealing moving plate in the electric shock heating box, and improves the preparation efficiency of ethylene.

Description

Technical Field

[0001] This invention relates to the field of ethylene production technology, and in particular to a reaction apparatus and method for producing ethylene by CO2 conversion. Background Technology

[0002] Ethylene, with the chemical formula C₂H₄ and a molecular weight of 28.054, is an organic compound composed of two carbon atoms and four hydrogen atoms, connected by carbon-carbon double bonds. Ethylene exists in certain tissues and organs of plants and is converted from methionine under sufficient oxygen conditions. It is a basic chemical raw material for the synthesis of synthetic fibers, synthetic rubber, synthetic plastics (polyethylene and polyvinyl chloride), and synthetic ethanol (alcohol). It is also used to manufacture raw materials for vinyl chloride, styrene, ethylene oxide, acetic acid, acetaldehyde, and explosives. Furthermore, it is used as a ripening agent for fruits and vegetables and is a proven plant hormone. Ethylene is one of the world's largest-produced chemical products, and the ethylene industry is the core of the petrochemical industry. Ethylene products account for more than 75% of petrochemical products and hold a vital position in the national economy. Globally, ethylene production is considered one of the important indicators for measuring the level of development of a country's petrochemical industry. Existing technologies for ethylene production suffer from the following problems: In existing CO2 chemical conversion ethylene production devices, the ratio of carbon dioxide to catalyst gas needs to be adjusted during the production of ethylene crude processing gas. Incorrect gas ratios during injection can easily lead to ethylene production failure. Furthermore, residual air in the electrostatic precipitator also affects ethylene yield. To address these issues, the inventors propose a CO2 chemical conversion ethylene production device. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a reaction apparatus and method for producing ethylene from CO2, thereby improving the control precision of the feed gas and the efficiency of ethylene production.

[0004] Technical solution: The present invention provides a reaction apparatus for the conversion of CO2 to ethylene, comprising:

[0005] Workbench;

[0006] A gas collection mechanism is fixedly mounted on a workbench. A drive mechanism is provided at the top of the gas collection mechanism. The gas collection mechanism includes two sets of gas proportioning collection boxes. Each gas proportioning collection box has a first gas guide pipe and a second gas guide pipe at its inlet and outlet ends, respectively. The two sets of second gas guide pipes are connected through a gas collection pipe, and a connecting butterfly valve for controlling the conduction is provided at one end of the gas collection pipe.

[0007] An electric shock reaction mechanism is fixedly installed at the gas outlet end of the gas collecting pipe and connected to the gas collecting pipe.

[0008] An air pump is connected to the exhaust end of the electric shock reaction mechanism via a connecting pipe.

[0009] Preferably, a sealing plate is slidably provided inside the gas proportioning collection box, and the outer peripheral wall of the sealing plate is in an interference fit with the inner wall of the gas proportioning collection box;

[0010] A threaded rod is fixedly connected to the center of the top of the sealing plate;

[0011] The top of the gas proportioning collection box is fixedly connected to a first filter screen protection plate. The first filter screen protection plate is provided with a first connecting hole for the threaded rod to pass through, and the top of the threaded rod can pass upward through the first connecting hole.

[0012] Preferably, the sealing plate has an arc-shaped surface at the gas inlet end of the gas proportioning collection box.

[0013] Preferably, the outer end face of the gas proportioning collection box is provided with a mounting groove along the height, and a scale plate is fixedly connected inside the mounting groove.

[0014] Preferably, the driving mechanism includes a fixed box fixedly connected to the upper end of the first filter screen protection plate. The fixed box is provided with a first limiting groove and a second limiting groove corresponding to the threaded rod, and the first limiting groove and the second limiting groove are horizontally staggered. The first limiting groove and the second limiting groove are respectively provided with adjusting gears that are drivenly connected to the threaded rod.

[0015] The upper end of the fixed box is provided with a second connecting hole corresponding to the first limiting groove and the second limiting groove, respectively, for the threaded rod to pass through;

[0016] The fixed box has an adjustment groove between the first limiting groove and the second limiting groove. The adjustment groove is provided with a first electric telescopic rod and a second electric telescopic rod that is telescopically connected to the first electric telescopic rod. The lower end of the second electric telescopic rod is provided with a transmission gear. The transmission gear can mesh with the adjustment gears in the first limiting groove and the second limiting groove respectively.

[0017] Preferably, the adjusting gear has a through threaded hole in the center, and the threaded rod is rotatably connected to the threaded hole;

[0018] A servo motor is fixedly connected to the upper end of the fixed box, and the output end of the servo motor extends into the adjustment groove and is fixedly connected to the first electric telescopic rod.

[0019] Preferably, the electric shock reaction mechanism includes an electric shock heating box, and a second filter screen protection plate is fixedly connected to the top of the electric shock heating box; an electric box is fixedly connected to the lower part of both sides of the outer wall of the electric shock heating box.

[0020] The lower inner wall of the electric shock heating box is symmetrically provided with positive and negative electrode strips and heating strips that are electrically connected to the power box. Limiting strips are respectively connected to the upper ends of the positive and negative electrode strips and heating strips.

[0021] The electric shock heating box is equipped with a sealing movable plate, and the sealing movable plate has slots on both sides corresponding to the limiting strip;

[0022] A silicone sealing sheet is fixedly connected to the outer wall of the sealing movable plate, and the silicone sealing sheet is interference-fitted with the inner wall of the electric shock heating box.

[0023] Preferably, both the first and second gas guide tubes are fixedly connected to a gas conduction component, which controls the conduction of the reaction gas.

[0024] Preferably, the gas conduction assembly includes a fixed sleeve, an arc-shaped sleeve is fixedly connected to the inlet end of the fixed sleeve, and a vent hole is provided at the outer end of the arc-shaped sleeve; a mesh plate is fixedly connected to the exhaust end of the fixed sleeve.

[0025] The fixed sleeve is equipped with a spherical plug, which can be movably inserted into the arc-shaped sleeve and into the vent hole; a support spring is fixedly connected between the spherical plug and the grid plate.

[0026] A method for producing ethylene from CO2 includes the following steps:

[0027] Step 1: Activate the first electric telescopic rod. The telescopic end of the first electric telescopic rod moves, driving the transmission gear to move between the adjusting gears in the first and second limiting grooves. The two adjusting gears can mesh with the transmission gears respectively. Activate the servo motor to drive the first electric telescopic rod to rotate. The rotation of the first electric telescopic rod drives the transmission gear and adjusting gear to mesh and rotate. The threaded rods inside the two sets of gas proportioning collection boxes are respectively rotated and connected to the adjusting gears in the first and second limiting grooves. The sealing plate is attached to the inner wall of the gas proportioning collection box. The rotation of the adjusting gears drives the threaded rods to move vertically up and down. The movement of the threaded rods drives the sealing plate to attach to the bottom of the gas proportioning collection box. After the sealing plate is attached, fix the pipes of the carbon dioxide gas box and the catalyst to the corresponding first gas guide pipes through the two first fixed pipes. Then, start the vacuum pump to completely remove the air inside the electric heating box. Install the pipe of the ethylene collection box to the exhaust end of the vacuum pump.

[0028] Step 2: Adjust the initial position of the sealing plate in the gas proportioning collection box according to the ratio of catalyst to carbon dioxide gas. After calculating the ratio, activate the first and second electric telescopic rods to adjust their extension lengths, so that the transmission gear meshes with the adjusting gear inside the first limiting groove, or with the second limiting groove. Based on the CO2 and catalyst gas ratio values, first collect the gas with the required ratio. The rotation of the transmission gear drives the corresponding adjusting gear to rotate, which in turn moves the corresponding threaded rod and sealing plate. The operator observes the scale plate on the gas proportioning collection box. When the sealing plate moves to the ratio scale, activate the first electric telescopic rod to drive the transmission gear. When the wheel moves to the middle position of the two adjusting gears, the servo motor is restarted. The two adjusting gears rotate simultaneously, driving the two threaded rods and the sealing plate to move simultaneously. Carbon dioxide and catalyst gas enter the interior of the two gas proportioning collection boxes through the first gas guide pipe, respectively. During the gas extraction process, the gas enters the interior of the fixed sleeve through the vent hole on the arc sleeve. The gas pressure squeezes the spherical plug, compressing the support spring and causing it to contract. The gas then passes through the grid plate and enters the gas proportioning collection box for storage. When the sealing plate, which is closer to the first filter screen protection plate, contacts the first filter screen protection plate, the servo motor stops rotating. The support spring rebounds, causing the spherical plug to abut against the inner wall of the arc sleeve, thereby achieving a sealing effect and preventing gas leakage.

[0029] Step 3: Open the connecting butterfly valve, start the servo motor to drive the two adjusting gears to rotate simultaneously, causing the two threaded rods and sealing plates to move towards the bottom of the gas proportioning collection box. Carbon dioxide and catalyst gas are squeezed into the gas collecting pipe and then enter the electric shock heating box through the connecting butterfly valve. The gas will push up the sealing moving plate inside the electric shock heating box until the sealing plate near the bottom of the gas proportioning collection box contacts the bottom of the gas proportioning collection box. Start the first and second electric telescopic rods to adjust the position of the transmission gears, and continue to move the sealing plates that are not in contact with the bottom of the gas proportioning collection box until the two sealing plates contact the bottom of the gas proportioning collection box. The two sealing plates block the connecting gas holes, and the gas will not flow. The gas inside the gas proportioning collection box completely enters the electric shock heating box.

[0030] Step 4: Turn on the power box on the electric heating box. The positive and negative electrode bars are energized and the heating bars release heat. Carbon dioxide reacts with the catalyst until the crude processing gas of ethylene is generated. After the production is completed, turn off all electrical appliances and start the vacuum pump. The vacuum pump completely removes the crude processing gas from the electric heating box and collects the gas in the ethylene collection box.

[0031] Beneficial effects: Compared with the prior art, the present invention has the following outstanding advantages:

[0032] 1. The ethylene reaction apparatus of the present invention, through a transmission mechanism provided on the gas collection mechanism, has two displaced adjusting gears inside the transmission mechanism. The initial position of the sealing plate is adjusted according to the ratio of catalyst to carbon dioxide gas. The first and / or second electric telescopic rods are activated, extending or retracting by different lengths. This achieves meshing transmission between the transmission gear and the adjusting gear inside the first limiting groove, or between the transmission gear and the adjusting gear inside the second limiting groove. Based on the raw material gas ratio, the gas with the required proportion is collected first. The rotation of the transmission gear drives the rotation of the adjusting gear, which in turn drives... As the threaded rod and sealing plate move, the operator observes the scale plate on the gas proportioning collection box. When the sealing plate moves to the proportioning scale position, the first electric telescopic rod is activated to drive the transmission gear to move to the middle position of the two adjusting gears. The servo motor is then activated again, and the two adjusting gears rotate simultaneously, driving the two threaded rods and sealing plates to move simultaneously. Carbon dioxide and catalyst gas enter the interior of the two gas proportioning collection boxes through the first gas guide pipe, respectively, completing the collection of reaction gases. The gas collection mechanism of this invention is simple to operate, can prevent misalignment of raw material gases during proportioning, and greatly improves the accuracy of the reaction device; it can improve the proportioning efficiency and accuracy of raw material gases.

[0033] 2. The present invention includes a gas conduction assembly inside the first or second gas guide tube. The gas conduction assembly includes a fixed sleeve, an arc-shaped sleeve, a spherical plug, and a grid plate. During the gas extraction process, the gas enters the fixed sleeve through the vent on the arc-shaped sleeve. At the same time, the gas pressure presses against the spherical plug, and the support spring is compressed and contracts. The gas passes through the grid plate and enters the gas proportioning collection box. When the gas extraction stops, the support spring rebounds, and the outer wall of the spherical plug presses against the inner wall of the arc-shaped sleeve, thereby achieving a sealing effect and preventing gas leakage.

[0034] 3. A sealing moving plate is slidably connected inside the electric shock heating box. When the air pump is started, the air pump completely removes the air from inside the electric shock heating box. The sealing moving plate contacts the bottom of the electric shock heating box, which plays a good sealing role and can prevent air from entering when carbon dioxide and catalyst are injected, thus affecting the ethylene production efficiency. Attached Figure Description

[0035] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the internal structure of the gas collection mechanism;

[0037] Figure 3 This is a second-view three-dimensional structural diagram of the present invention;

[0038] Figure 4 for Figure 1 Schematic diagram of the internal structure of the electric shock reaction mechanism;

[0039] Figure 5 for Figure 2 Enlarged structural diagram at point A in the middle;

[0040] Figure 6 for Figure 3 Enlarged structural diagram at point B.

[0041] Figure label:

[0042] 1. Workbench;

[0043] 2. Gas collection mechanism; 201. Gas proportioning collection box; 202. Mounting slot; 203. Scale plate; 204. Sealing plate; 205. Arc-shaped surface; 206. Fixing block; 207. Threaded rod; 208. First filter screen protection plate; 209. First connecting hole;

[0044] 3. Support columns;

[0045] 4. Drive mechanism; 401. Fixing box; 402. Servo motor; 403. First limiting groove; 404. Second limiting groove; 405. Second connecting hole; 406. Adjusting groove; 407. First electric telescopic rod; 408. Second electric telescopic rod; 409. Transmission gear; 410. Adjusting gear; 411. Threaded hole;

[0046] 5. First air duct; 6. First fixed tube;

[0047] 7. Electric shock reaction mechanism; 701. Electric shock heating box; 702. Second filter screen protection plate; 703. Power supply box; 704. Positive and negative electrode strips; 705. Limiting strip; 706. Sealing moving plate; 707. Slot; 708. Silicone sealing sheet; 709. Heating strip;

[0048] 8. Air pump; 9. Second air guide pipe; 10. Air collection pipe; 11. Connecting butterfly valve; 12. Connecting pipe; 13. Second fixing pipe; 14. Support bar; 15. Fixing sleeve; 16. Arc sleeve; 17. Mesh plate; 18. Spherical plug; 19. Spring; 20. Vent hole. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figure 1-6 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0050] Example 1:

[0051] like Figure 1-3 As shown, a CO2 conversion reaction device for producing ethylene according to the present invention includes a workbench 1. A gas collection mechanism 2 and an electric shock reaction mechanism 7 are respectively supported on the workbench 1 by support columns 3. A support bar 14 is fixed between the gas collection mechanism 2 and the electric shock reaction mechanism 7. A drive mechanism 4 is provided at the top of the gas collection mechanism 2. The gas collection mechanism 2 includes two sets of gas proportioning collection boxes 201. Each gas proportioning collection box 201 has a first gas guide pipe 5 and a second gas guide pipe 9 at its inlet and outlet ends, respectively. A first fixed pipe 6 is fixedly connected to the outer end of the first gas guide pipe 5. The first fixed pipe 6 can be fixedly connected to the inlet pipes of the CO2 gas box and the catalyst gas box, respectively. The two sets of second gas guide pipes 9 are connected through a gas collecting pipe 10, and one end of the gas collecting pipe 10 is provided with a connecting butterfly valve 11 for controlling the conduction. The electric shock reaction mechanism 7 is fixedly installed at the outlet end of the gas collecting pipe 10 and connected to the gas collecting pipe 10. The mixed gas in the gas collection mechanism 2 can be controlled to enter the electric shock reaction mechanism 7 for chemical reaction to generate ethylene gas through the connecting butterfly valve 11. The exhaust end of the electric shock reaction mechanism 7 is provided with a connecting pipe 12. The connecting pipe 12 is connected to the inlet end of the vacuum pump 8 through the second fixed pipe 13. The exhaust end of the vacuum pump is connected to the ethylene collection box. The ethylene gas prepared by the electric shock reaction mechanism 7 is extracted into the ethylene collection box for storage by the vacuum pump 8.

[0052] like Figure 2 and Figure 5 As shown, a sealing plate 204 is slidably installed inside the gas proportioning collection box 201. The sealing plate 204 has an arc-shaped surface 205 at the gas inlet end of the gas proportioning collection box 201, and its outer peripheral wall is interference-fitted with the inner wall of the gas proportioning collection box 201, ensuring a sealed connection between the sealing plate 204 and the gas proportioning collection box 201. A fixing block 206 is located at the center of the top of the sealing plate 204, and a threaded rod 207 is fixedly connected to the fixing block 206. A first filter screen protection plate 208 is fixedly connected to the top of the gas proportioning collection box 201. The first filter screen protection plate 208 has a first connecting hole 209 for the threaded rod 207 to pass through, and the top of the threaded rod 207 can pass upward through the first connecting hole 209. During operation, the threaded rod 207 moves up and down along the first connecting hole 209, which drives the sealing plate 204 to slide up and down along the inner wall of the gas proportioning collection box 201.

[0053] like Figure 1 As shown, the outer end faces of the two sets of gas proportioning collection boxes 201 are provided with mounting grooves 202 along the height. A scale plate 203 is fixedly connected inside the mounting groove 202. The scale plate 203 can be made of transparent acrylic plate. The specific height position of the sealing plate inside the gas proportioning collection box can be observed through the scale plate, so as to control the gas collection ratio inside the gas proportioning collection box.

[0054] like Figure 5 The drive mechanism 4 includes a fixed box 401 fixedly connected to the upper end of the first filter screen protection plate 208. The fixed box 401 is provided with a first limiting groove 403 and a second limiting groove 404 corresponding to the threaded rod 207, and the first limiting groove 403 and the second limiting groove 404 are horizontally staggered. The first limiting groove 403 and the second limiting groove 404 are respectively provided with adjusting gears 410 that are drivenly connected to the threaded rod 207. The upper end of the fixed box 401 is provided with a second connecting hole 405 corresponding to the first limiting groove 403 and the second limiting groove 404 for the threaded rod to pass through. The upper end of the threaded rod 207 can pass through the second connecting hole 405 to meet the adjustment of the position of the sealing plate in the gas proportioning collection box. The fixed box 401 has an adjustment groove 406 between the first limiting groove 403 and the second limiting groove 404. The adjustment groove 406 contains a first electric telescopic rod 407 and a second electric telescopic rod 408 telescopically connected within the first electric telescopic rod 407. The lower end of the second electric telescopic rod 408 has a transmission gear 409, which can mesh with the adjustment gears 410 in the first limiting groove 403 and the second limiting groove 404 respectively. The adjustment gear 410 has a through threaded hole 411 in its center, and the threaded rod 207 is rotatably connected to the threaded hole 411. A servo motor 402 is fixedly connected to the upper end of the fixed box 401. The output end of the servo motor 402 extends into the adjustment groove 406 and is fixedly connected to the first electric telescopic rod 407. During operation, the servo motor 402 can control the first and second electric telescopic rods to rotate along their axial direction, thereby driving the transmission gear to rotate. The first and second electric telescopic rods can adjust the spatial position of the transmission gear 409 through telescopic operation, and respectively realize the transmission connection with the adjustment gear 410, thereby realizing the adjustment of the position of the sealing plate in the two sets of gas proportioning collection boxes.

[0055] like Figure 3 and Figure 6 As shown, both the first gas guide tube 5 and the second gas guide tube 9 are fixedly connected to a gas conduction assembly, which controls the conduction of the reaction gas. The gas conduction assembly includes a fixed sleeve 15, an arc-shaped sleeve 16 fixedly connected to the inlet end of the fixed sleeve 15, and a vent hole 20 provided at the outer end of the arc-shaped sleeve 16. A grid plate 17 is fixedly connected to the exhaust end of the fixed sleeve 15. A spherical plug 18 is movably provided on the fixed sleeve 15, and the spherical plug 18 can be movably inserted into the arc-shaped sleeve 16 and into the vent hole 20. A support spring 19 is fixedly connected between the spherical plug 18 and the grid plate 17. During the gas extraction process, the gas enters the interior of the fixed sleeve through the vent hole on the arc-shaped sleeve. At the same time, the gas pressure will press against the spherical plug, and the support spring will be compressed. The gas passes through the grid plate and enters the interior of the gas proportioning collection box. When the gas extraction stops, the support spring rebounds, and the outer wall of the spherical plug is pressed against the inner wall of the arc-shaped sleeve, thereby achieving a sealing effect and preventing gas leakage.

[0056] like Figure 1 and Figure 4 As shown, the electric shock reaction mechanism 7 includes an electric shock heating box 701, with a second filter screen protection plate 702 fixedly connected to the top of the electric shock heating box 701; energized boxes 703 are fixedly connected to the lower sides of both sides of the outer wall of the electric shock heating box 701; positive and negative electrode strips 704 and heating strips 709, which are electrically connected to the energized boxes 703, are symmetrically arranged on the lower side of the inner wall of the electric shock heating box 701, and limit strips 705 are respectively connected to the upper ends of the positive and negative electrode strips 704 and heating strips 709; a sealing moving plate 706 is provided inside the electric shock heating box 701, and slots 707 corresponding to the limit strips 705 are provided on both sides of the sealing moving plate 706; a silicone sealing sheet 708 is fixedly connected to the outer wall of the sealing moving plate 706, and the silicone sealing sheet 708 is interference-fitted with the inner wall of the electric shock heating box 701. During operation, a sealing moving plate is slidably connected inside the electric shock heating box. When the air pump is started, the air pump completely removes the air from inside the electric shock heating box. The sealing moving plate contacts the bottom of the electric shock heating box, which plays a good sealing role and prevents air from entering when carbon dioxide and catalyst are injected, thus affecting the ethylene production efficiency.

[0057] Example 2:

[0058] The present invention provides a method for producing ethylene from CO2, comprising the following steps:

[0059] Step 1: Start the first electric telescopic rod 407. The telescopic end of the first electric telescopic rod 407 moves, driving the transmission gear 409 to move between the adjusting gear 410 in the first limiting groove 403 and the second limiting groove 404. The two adjusting gears 410 can mesh with the transmission gear 409 respectively for transmission. Start the servo motor 402 to drive the first electric telescopic rod 407 to rotate. The rotation of the first electric telescopic rod 407 drives the transmission gear 409 and the adjusting gear 410 to mesh and rotate. The threaded rods 207 inside the two sets of gas proportioning collection boxes 201 respectively mesh with the first limiting groove 403 and the second limiting groove 404. The adjusting gear 410 is rotatably connected; the sealing plate 204 is fitted to the inner wall of the gas proportioning collection box 201. The rotation of the adjusting gear 410 drives the threaded rod 207 to move vertically. The movement of the threaded rod 207 drives the sealing plate 204 to fit against the bottom of the gas proportioning collection box 201. After the sealing plate 204 is fitted, the pipes of the carbon dioxide gas box and the catalyst are respectively fixedly connected to the corresponding first gas guide pipes 5 through two first fixed pipes 6. Then, the vacuum pump 8 is started to completely remove the air inside the electric heating box 701. The pipe of the ethylene collection box is installed to the exhaust end of the vacuum pump 8.

[0060] Step 2: Adjust the initial position of the sealing plate 204 in the gas proportioning collection box 201 according to the ratio of catalyst to carbon dioxide gas. After calculating the ratio, activate the first electric telescopic rod 407 and the second electric telescopic rod 408 to adjust the extension length, so that the transmission gear 409 meshes with the adjusting gear 410 inside the first limiting groove 403, or so that the transmission gear 409 meshes with the adjusting gear 410 inside the second limiting groove 404. According to the CO2 and catalyst gas ratio values, collect the gas with the required ratio first. The rotation of the transmission gear 409 drives the corresponding adjusting gear 410 to rotate, and the rotation of the adjusting gear 410 drives the corresponding threaded rod 207 and sealing plate 204 to move. The operator observes the scale plate 203 on the gas proportioning collection box 201. When the sealing plate 204 moves to the ratio scale, activate the first electric telescopic rod 407. The drive transmission gear 409 moves to the middle position of the two adjusting gears 410, and the servo motor 402 is started again. The two adjusting gears 410 rotate simultaneously, driving the two threaded rods 207 and the sealing plate 204 to move simultaneously. Carbon dioxide and catalyst gas enter the interior of the two gas proportion collection boxes 201 through the first gas guide pipe 5 respectively. During the gas extraction process, the gas enters the interior of the fixed sleeve 15 through the vent hole 20 on the arc sleeve 16. The gas pressure squeezes the spherical plug 18 to compress the support spring 19 and contract it. Then the gas passes through the grid plate 17 and enters the gas proportion collection box 201 for storage. When the sealing plate 204, which is closer to the first filter screen protection plate 208, contacts the first filter screen protection plate 208, the servo motor 402 stops rotating. The support spring 19 rebounds and drives the spherical plug 18 to abut against the inner wall of the arc sleeve 16, thereby playing a sealing role and preventing gas leakage.

[0061] Step 3: Open the connecting butterfly valve 11, start the servo motor 402 to drive the two adjusting gears 410 to rotate simultaneously, driving the two threaded rods 207 and the sealing plate 204 to move towards the bottom of the gas proportioning collection box 201. Carbon dioxide and catalyst gas are squeezed into the gas collecting pipe 10 and then enter the electric shock heating box 701 through the connecting butterfly valve 11. The gas will push up the sealing moving plate 706 inside the electric shock heating box 701 until the sealing plate 204 near the bottom of the gas proportioning collection box 201 contacts the bottom of the gas proportioning collection box 201. Start the first electric telescopic rod 407 and the second electric telescopic rod 408 to adjust the position of the transmission gear 409, and continue to move the sealing plate 204 that is not in contact with the bottom of the gas proportioning collection box 201 until the two sealing plates 204 contact the bottom of the gas proportioning collection box 201. The two sealing plates 204 block the connecting gas hole, and the gas will not flow. The gas inside the gas proportioning collection box 201 completely enters the electric shock heating box 701.

[0062] Step 4: Start the power box 703 on the electric heating box 701, the positive and negative electrode bars 704 are energized and the heating bar 709 releases heat, carbon dioxide reacts with the catalyst until the crude processing gas of ethylene is generated. After the production is completed, turn off all electrical appliances and start the vacuum pump 8. The vacuum pump 8 completely extracts the crude processing gas inside the electric heating box 701 and the gas enters the ethylene collection box for collection.

[0063] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A reaction apparatus for converting CO2 to produce ethylene, characterized in that, include: Workbench (1); Gas collection mechanism (2), which is fixed on the workbench (1); the top of the gas collection mechanism (2) is provided with a drive mechanism (4); the gas collection mechanism (2) includes two sets of gas proportion collection boxes (201), each of the gas proportion collection boxes (201) is provided with a first gas guide pipe (5) at the inlet end and a second gas guide pipe (9) at the outlet end, and the two sets of second gas guide pipes (9) are connected through a gas collection pipe (10), and a connecting butterfly valve (11) for controlling the conduction is provided at one end of the gas collection pipe (10); An electric shock reaction mechanism (7) is fixedly installed at the outlet end of the gas collecting pipe (10) and connected to the gas collecting pipe (10); wherein, the electric shock reaction mechanism (7) includes an electric shock heating box (701), and a second filter screen protection plate (702) is fixedly connected to the top of the electric shock heating box (701); an electric box (703) is fixedly connected to the lower sides of both sides of the outer wall of the electric shock heating box (701); positive and negative electrical contacts electrically connected to the electric box (703) are symmetrically arranged on the lower side of the inner wall of the electric shock heating box (701). The electric shock heating box (701) is equipped with an electrode strip (704) and a heating strip (709). The upper ends of the positive and negative electrode strips (704) and the heating strips (709) are respectively connected to limit strips (705). A sealing moving plate (706) is provided inside the electric shock heating box (701). The sealing moving plate (706) has slots (707) on both sides corresponding to the limit strips (705). A silicone sealing sheet (708) is fixedly connected to the outer wall of the sealing moving plate (706), and the silicone sealing sheet (708) is interference-fitted with the inner wall of the electric shock heating box (701). The air pump (8) is connected to the exhaust end of the electric shock reaction mechanism (7) via a connecting pipe (12).

2. The reaction apparatus for producing ethylene from CO2 according to claim 1, characterized in that, The gas proportioning collection box (201) is equipped with a sliding sealing plate (204), and the outer peripheral wall of the sealing plate (204) is in an interference fit with the inner wall of the gas proportioning collection box (201). A threaded rod (207) is fixedly connected to the center of the top of the sealing plate (204). The top of the gas proportioning collection box (201) is fixedly connected to a first filter screen protection plate (208). The first filter screen protection plate (208) is provided with a first connecting hole (209) for the threaded rod (207) to pass through, and the top of the threaded rod (207) can pass upward through the first connecting hole (209).

3. The reaction apparatus for producing ethylene from CO2 according to claim 2, characterized in that, The sealing plate (204) has an arc-shaped surface (205) at the air inlet end of the gas proportioning collection box (201).

4. The reaction apparatus for CO2 conversion to ethylene according to claim 3, characterized in that, The gas proportioning collection box (201) has an installation groove (202) along the height direction on its outer end face, and a scale plate (203) is fixedly connected inside the installation groove (202).

5. The reaction apparatus for CO2 conversion to ethylene according to claim 4, characterized in that, The drive mechanism (4) includes a fixed box (401) fixedly connected to the upper end of the first filter screen protection plate (208). The fixed box (401) is provided with a first limiting groove (403) and a second limiting groove (404) corresponding to the threaded rod (207), and the first limiting groove (403) and the second limiting groove (404) are horizontally staggered. The first limiting groove (403) and the second limiting groove (404) are respectively provided with adjusting gears (410) that are drively connected to the threaded rod (207). The upper end of the fixed box (401) is provided with a second connecting hole (405) for the threaded rod to pass through, corresponding to the first limiting groove (403) and the second limiting groove (404). The fixed box (401) has an adjustment groove (406) between the first limiting groove (403) and the second limiting groove (404). The adjustment groove (406) is provided with a first electric telescopic rod (407) and a second electric telescopic rod (408) telescopically connected to the first electric telescopic rod (407). The lower end of the second electric telescopic rod (408) is provided with a transmission gear (409). The transmission gear (409) can be meshed with the adjustment gear (410) in the first limiting groove (403) and the second limiting groove (404) respectively.

6. The reaction apparatus for CO2 conversion to ethylene according to claim 5, characterized in that, The adjusting gear (410) has a through threaded hole (411) in the center, and the threaded rod (207) is rotatably connected to the threaded hole (411); A servo motor (402) is fixedly connected to the upper end of the fixed box (401). The output end of the servo motor (402) extends into the adjustment groove (406) and is fixedly connected to the first electric telescopic rod (407).

7. The CO2 conversion reaction apparatus for producing ethylene according to claim 6, characterized in that, Both the first gas guide tube (5) and the second gas guide tube (9) are fixedly connected to a gas conduction component, which controls the conduction of the reaction gas.

8. The reaction apparatus for CO2 conversion to ethylene according to claim 7, characterized in that, The gas conduction assembly includes a fixed sleeve (15), an arc-shaped sleeve (16) is fixedly connected to the inlet end of the fixed sleeve (15), and a vent hole (20) is provided at the outer end of the arc-shaped sleeve (16). A grid plate (17) is fixedly connected to the exhaust end of the fixed sleeve (15). The fixed sleeve (15) is provided with a spherical plug (18), and the spherical plug (18) can be movably inserted into the arc sleeve (16) and into the vent hole (20); a support spring (19) is fixedly connected between the spherical plug (18) and the grid plate (17).

9. A method for producing ethylene from CO2, characterized in that, The reaction apparatus as described in claim 8 includes the following steps: Step 1: Start the first electric telescopic rod (407). The telescopic end of the first electric telescopic rod (407) moves, driving the transmission gear (409) to move between the adjusting gear (410) in the first limiting groove (403) and the second limiting groove (404). The two adjusting gears (410) can mesh with the transmission gear (409) respectively. Start the servo motor (402) to drive the first electric telescopic rod (407) to rotate. The rotation of the first electric telescopic rod (407) drives the transmission gear (409) and the adjusting gear (410) to mesh and rotate. The threaded rods (207) inside the two gas proportioning collection boxes (201) rotate with the adjusting gears (410) in the first limiting groove (403) and the second limiting groove (404) respectively. Dynamic connection; the sealing plate (204) is attached to the inner wall of the gas proportioning collection box (201), the adjusting gear (410) rotates and drives the threaded rod (207) to move up and down along the longitudinal direction, the threaded rod (207) moves and drives the sealing plate (204) to attach to the bottom of the gas proportioning collection box (201); after the sealing plate (204) is attached, the pipes of the gas proportioning collection box (201) for collecting carbon dioxide gas and the gas proportioning collection box (201) for collecting catalyst gas are fixedly connected to the corresponding first gas guide pipe (5) through their respective first fixed pipes (6), and then the vacuum pump (8) is started to completely remove the air inside the electric shock heating box (701); and the pipe of the ethylene collection box is installed to the exhaust end of the vacuum pump (8); Step 2: Adjust the initial position of the sealing plate (204) in the gas proportioning collection box (201) according to the ratio of catalyst gas to carbon dioxide gas. After calculating the ratio, start the first electric telescopic rod (407) and the second electric telescopic rod (408) to adjust the extension length, so that the transmission gear (409) meshes with the adjusting gear (410) inside the first limiting groove (403), or so that the transmission gear (409) meshes with the adjusting gear (410) inside the second limiting groove (404). According to the carbon dioxide and catalyst gas ratio, collect the gas with the higher required ratio first. The rotation of the transmission gear (409) drives the corresponding adjusting gear (410) to rotate. The rotation of the adjusting gear (410) drives the corresponding threaded rod (207) and the sealing plate (204) to move. The staff observes the scale plate (203) on the gas proportioning collection box (201). When the sealing plate (204) moves to the ratio scale, start the first electric telescopic rod (407) to drive the transmission gear (408) to move the gas proportioning collection box (201). The moving gear (409) moves to the middle position of the two adjusting gears (410), and the servo motor (402) is started again. The two adjusting gears (410) rotate simultaneously, driving the two threaded rods (207) and the sealing plate (204) to move simultaneously. Carbon dioxide and catalyst gas enter the interior of the corresponding gas proportion collection box (201) through their respective first gas guide pipes (5). During the gas extraction process, the gas enters the fixed sleeve (16) through the vent hole (20) on the arc sleeve (16). Inside 5), the gas pressure will squeeze the spherical plug (18) and compress the support spring (19) to contract, and the gas will pass through the grid plate (17) and enter the gas proportion collection box (201) for storage. When the sealing plate (204) which is closer to the first filter screen protection plate (208) comes into contact with the first filter screen protection plate (208), the servo motor (402) stops rotating, and the support spring (19) rebounds and drives the spherical plug (18) to abut against the inner wall of the arc sleeve (16) to play a sealing role and prevent gas leakage. Step 3: Open the connecting butterfly valve (11), start the servo motor (402) to drive the two adjusting gears (410) to rotate simultaneously, causing the two threaded rods (207) and the sealing plate (204) to move simultaneously towards the bottom of the gas proportioning collection box (201). Carbon dioxide and catalyst gas are squeezed into the gas collecting pipe (10) and then enter the electric shock heating box (701) through the connecting butterfly valve (11). The gas will push up the sealing moving plate (706) inside the electric shock heating box (701) until it approaches the sealing plate (207) at the bottom of the gas proportioning collection box (201). 4) When the gas proportioning collection box (201) comes into contact with the bottom, start the first electric telescopic rod (407) and the second electric telescopic rod (408) to adjust the position of the transmission gear (409), and continue to move the sealing plate (204) that is not in contact with the bottom of the gas proportioning collection box (201) until the two sealing plates (204) come into contact with the bottom of the gas proportioning collection box (201). The two sealing plates (204) block the connected air hole, and the gas will not flow. The gas inside the gas proportioning collection box (201) will completely enter the electric shock heating box (701). Step 4: Start the power box (703) on the electric shock heating box (701), the positive and negative electrode strips (704) are energized and the heating strip (709) releases heat, carbon dioxide reacts with the catalyst gas until the crude processing gas of ethylene is generated. After the production is completed, turn off all electrical appliances and start the vacuum pump (8). The vacuum pump (8) completely extracts the crude processing gas inside the electric shock heating box (701) and the gas enters the ethylene collection box for collection.

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