A marine methanol synthesis device

Abstract

The present invention belongs to the technical field of methanol synthesis, and discloses a marine methanol synthesis device, including a reactor, a catalyst cartridge, an air inlet and a discharge port, a sealing cover is installed on the top of the reactor by bolt compression, a supplementary mechanism is installed on the top of the sealing cover, the supplementary mechanism includes a fixed pipe fixedly installed on the top of the sealing cover, a mounting box is fixedly installed on the bottom of the fixed pipe, through grooves are provided at both ends of the mounting box, a limiting ring is fixedly installed on the bottom of the inner wall of the fixed pipe, a transmission shaft is rotatably installed on the top of the inner wall of the fixed pipe, and multiple sets of spiral plates are fixedly installed on the upper side of the outer surface of the transmission shaft. The device realizes the automatic pressurization function of the device, and the design realizes automatic pressurization in conjunction with the increase of reaction temperature, abandons the disadvantages of using an air pump in traditional technology, not only reduces the ship load, but also saves fuel, and improves the reliability of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of methanol synthesis, and in particular relates to a marine methanol synthesis device. Background Art

[0002] Methanol is often used as fuel for internal combustion engines to provide power for various vehicles. In the marine field, some cruise ships will be driven by methanol internal combustion engines, which requires a large amount of methanol as raw material, which is costly and cannot meet the demand in terms of energy saving. Research has found that in addition to the traditional synthesis of methanol by adding carbon monoxide to hydrogen, there is another way: that is, using carbon dioxide and hydrogen to react under high temperature, high pressure and catalyst to produce methanol. There are also a large amount of high-temperature carbon dioxide and heat in the exhaust gas of marine methanol internal combustion engines. Therefore, the high-temperature water and exhaust gas used for cooling the main engine of the internal combustion engine can be used for waste heat recovery, and the steam generator can be driven to generate electricity (such as steam generators or others. The steam generator mainly uses the high-temperature waste heat of the main engine to heat water and generate high-temperature and high-pressure water vapor. The water vapor is sent to the steam turbine and uses its high-temperature and high-pressure characteristics to drive the steam turbine to rotate, thereby driving the generator to work). Then the electricity generated is electrolyzed to produce hydrogen. At the same time, carbon capture technology is used to collect carbon dioxide in the main engine exhaust gas, and then methanol is synthesized and transported to the main engine as supplementary fuel, thereby converting part of the heat energy of the main engine into methanol, and the consumption of raw materials can be greatly reduced.

[0003] For the synthesis of methanol, it is necessary to set up a marine methanol synthesis device. In the prior art, the interior of the methanol synthesis device needs to be pressurized and heated during the reaction. Pressurization is a relatively difficult part to solve, which requires special equipment to achieve, such as an air pump. However, in the marine field, the air pump not only increases the load of the cruise ship, but also requires additional power drive, which is completely inconsistent with fuel economy. Therefore, the present invention takes this demand as a target and designs a new marine methanol synthesis device. Summary of the invention

[0004] The object of the present invention is to provide a marine methanol synthesis device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a marine methanol synthesis device, comprising a reactor, a catalyst cartridge, an air inlet and a discharge port, a sealing cover is installed on the top of the reactor by bolt pressing, a heating box is fixedly installed inside the reactor, a heater is installed inside the heating box and filled with heat exchange fluid, a fixing module is also provided in the inner cavity of the reactor and is used to clamp the catalyst cartridge, a supplementing mechanism is installed on the top of the sealing cover, and a reflux mechanism is installed on the side of the supplementing mechanism;

[0006] The supplementary mechanism comprises a fixed tube fixedly installed on the top of the sealing cover, a mounting box fixedly installed on the bottom of the fixed tube, through grooves are provided at both ends of the mounting box, a limiting ring is fixedly installed on the bottom of the inner wall of the fixed tube, a transmission shaft is rotatably installed on the top of the inner wall of the fixed tube, a plurality of sets of spiral plates are fixedly installed on the upper side of the outer surface of the transmission shaft, a limiting sleeve is slidably sleeved on the lower side of the outer surface of the transmission shaft, the limiting sleeve is gap-fitted with the inner ring surface of the limiting ring, a spring four is movably sleeved on the outer surface of the limiting sleeve, and a bevel gear is installed on the bottom end of the transmission shaft;

[0007] A rotating shaft is rotatably installed on the left and right sides of the inner wall of the sealing cover, and the opposite ends of the two groups of rotating shafts are rotatably installed on the inner wall of the mounting box. Another group of bevel gears is installed on one end of the two groups of rotating shafts and is transmission-connected to the transmission shaft. A spring three is elastically connected to the top of the inner wall of the sealing cover, and a piston is elastically connected to the bottom end of the spring three. A slide groove is provided on the left and right sides of the top of the piston, and a slider is slidably installed inside the slide groove. A rack is rotatably installed on the top of the slider, and a transmission gear is fixedly installed on the outer surface of the rotating shaft, and the rack is meshed with the transmission gear. The space above the piston in the inner cavity of the sealing cover is filled with thermal expansion liquid.

[0008] Preferably, the fixing module includes a bottom ring located at the bottom of the inner wall of the reactor and an upper clamping plate located above the catalyst cartridge, the top of the bottom ring is elastically mounted with multiple groups of spring 1s, and is elastically connected to the lower clamping plate through the spring 1, the surfaces of the lower clamping plate and the upper clamping plate are provided with multiple groups of through holes for the end of the catalyst cartridge to be plugged in, the catalyst cartridge is clamped between the lower clamping plate and the upper clamping plate, the top of the upper clamping plate is provided with four groups of disassembly grooves equidistantly distributed around the circumference, the top of the inner wall of the reactor is provided with four groups of mounting grooves equidistantly distributed around the circumference, the inside of the mounting groove is fixedly connected with spring 2, one end of the spring 2 is elastically connected with a fixing block, the fixing block is adapted to be snap-fitted into the mounting groove, and is limitedly abutted against the top of the upper clamping plate.

[0009] Preferably, the reflux mechanism includes a connecting tube 1 fixedly connected to the left side of the fixed tube, one end of the connecting tube 1 is fixedly connected to a connecting tube 2, the connecting tube 2 is vertically fixedly installed on the top of the sealing cover and extends to the inner cavity of the sealing cover, the right side of the outer surface of the connecting tube 2 is connected to a connecting tube 3, the bottom sealing sleeve of the inner wall of the connecting tube 2 is provided with a sealing block, the left side of the outer surface of the connecting tube 2 is fixedly connected to a connecting tube 4, the connecting tube 4 is designed in a "U" shape, the upper end interface of the connecting tube 4 is located above the sealing block, and the lower end interface of the connecting tube 4 is located at the bottom of the outer surface of the connecting tube 2.

[0010] Preferably, a limiting column located between the upper end opening of the limiting column and the sealing block is fixedly installed on the inner wall of the connecting pipe 2, and when the top end of the sealing block abuts against the limiting column, the connecting pipe 4 is connected with the connecting pipe 3.

[0011] Preferably, the discharge port is installed at the bottom end of the reactor, the air inlet is arranged in two groups and symmetrically distributed on the left and right sides of the reactor, and the top end of the fixed pipe is used for externally connecting a device for storing thermal expansion liquid.

[0012] Preferably, the two groups of rotating shafts have opposite directions and the same rotation speed, the two ends of the spring four are elastically connected to the limit sleeve and the limit ring respectively, and the top of the lower end of the limit sleeve is sealingly abutted against the limit ring.

[0013] Preferably, the rack is arranged at an angle and meshes with and overlaps the outer surface of the transmission gear, and when the piston moves to the lowest point, the rack is in a vertical state.

[0014] Preferably, both ends of the transmission gear are provided with limiting grooves, the outer surface of the rack is movably connected to the limiting plate, the inner side of the limiting plate is fixedly connected with a clamping column, and is limitedly clamped in the limiting groove by the clamping column, and the top of the piston is fixedly connected with a heat pipe.

[0015] Preferably, after the rack moves to the vertical state, the rack moves in the vertical direction under the limiting action of the limiting plate and always remains in meshing with the transmission gear.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. This device is redesigned based on the basic principle of methanol synthesis, and realizes a high-reliability automatic pressurization function, which brings extremely high safety and extremely low use cost in the marine field. By adding thermal expansion liquid into the inner cavity of the sealing cover, its volume is expanded by heating, and the piston is driven to move down automatically, changing the effective volume in the inner cavity of the reactor, and realizing the automatic pressurization function of the device. This design realizes automatic pressurization in conjunction with the increase of reaction temperature, abandoning the disadvantages of using air pumps in traditional technology, not only reducing the ship load, but also saving fuel and improving the reliability of the device.

[0018] 2. Then, the piston is used to drive the rack to move downward, and the transmission gear is driven to rotate synchronously to transmit power to the transmission shaft and the spiral plate. During the downward movement of the piston, the inner cavity of the fixed tube generates a downward axial thrust, and the limit sleeve is limited and secured by spring four and the limit ring so that it can only discharge liquid downward but not upward. The downward axial thrust pushes the limit sleeve to move downward, so that the stored thermal expansion fluid enters the sealing cover through the gap of the limit ring, providing sufficient hydraulic medium for the downward movement of the piston to perform the pressurization operation, and also increasing the hydraulic push stroke.

[0019] 3. This device uses an upper clamping plate and a lower clamping plate to clamp multiple groups of catalyst cartridges, so that the catalyst cartridges can be more stable after installation. The upper clamping plate is limited and abutted by the fixed block on the inner wall of the installation groove and cannot move upward. The upper clamping plate is used to press the catalyst cartridge and the lower clamping plate downward to compress the spring. This design enables the catalyst cartridge installed inside the device to adapt to the bumpy movement on the water. The deformable spring is used to absorb the bumps experienced by the device when used on a ship, making the device more suitable for use on water.

[0020] 4. The device also adds a reflux mechanism to supplement the replenishing mechanism, which is used to recover the thermal expansion fluid that enters the inner cavity of the sealing cover. When the piston moves downward and drives the transmission shaft and the spiral plate to rotate forward, the spiral plate is used to generate a downward thrust to open the limit sleeve and replenish the thermal expansion fluid. At this time, the inner cavity of the connecting pipe 1 is connected to the fixed pipe, and a downward thrust is also generated inside the connecting pipe 2, which just fixes the sealing block and blocks the connecting pipe 3. When the piston is reset, the transmission shaft and the spiral plate reverse, and the axial thrust generated is opposite. At this time, the limit sleeve is responsible for closing the limit ring, and a negative pressure suction force is generated inside the connecting pipe 2, and the sealing block is pulled upward, opening the connecting pipe 3 and connecting with the connecting pipe 4, so that the thermal expansion fluid is recovered to the storage device through here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall process of methanol supply and recovery of the present invention;

[0022] Figure 2 It is a front schematic diagram of the device of the present invention;

[0023] Figure 3 It is a front cutaway schematic diagram of the device of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at center A;

[0025] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0026] Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at C in the middle;

[0027] Figure 7 For the present invention Figure 3 A magnified schematic diagram of the structure at D in the middle;

[0028] Figure 8 It is a schematic diagram of the inner cavity of the side of the sealing cover of the present invention;

[0029] Fig. 9 For the present invention Figure 8 A magnified schematic diagram of the structure at E in the middle;

[0030] Fig.10 It is a schematic diagram of the separation of the bottom ring, the first spring, the lower clamping plate, the upper clamping plate, the second spring, the fixing block, the heating box, the heater and the catalyst cartridge of the present invention;

[0031] Fig.11 It is a schematic top view of the inner cavity of the reactor of the present invention;

[0032] Fig.12 A schematic diagram of the sealing cover and the supplementary mechanism of the present invention;

[0033] Fig.13 For the present invention Fig.12 A magnified view of the structure at F in the middle;

[0034] Fig.14 This is a diagram of the rotating shaft, gear, rack, limit plate and slider of the present invention;

[0035] Fig.15 It is a schematic diagram of the separation of the transmission shaft, spiral plate, limit ring, limit sleeve and spring four of the present invention.

[0036] In the figure:

[0037] 1. Reactor; 11. Air inlet; 12. Discharge port; 13. Bottom ring; 14. Spring 1; 15. Lower clamping plate; 16. Upper clamping plate; 17. Disassembly slot; 18. Installation slot; 19. Spring 2; 110. Fixing block;

[0038] 2. Sealing cover; 21. Rotating shaft; 22. Spring three; 23. Transmission gear; 24. Limiting groove; 25. Rack; 26. Limiting plate; 27. Piston; 28. Slide groove; 29. ​​Sliding block; 210. Heat pipe;

[0039] 3. Supplementary mechanism; 31. Fixed pipe; 32. Mounting box; 33. Through slot; 34. Transmission shaft; 35. Spiral plate; 36. Limiting ring; 37. Limiting sleeve; 38. Spring four;

[0040] 4. Reflux mechanism; 41. Connecting pipe 1; 42. Connecting pipe 2; 43. Limiting column; 44. Sealing block; 45. Connecting pipe 3; 46. Connecting pipe 4;

[0041] 5. Heating box; 6. Heater; 7. Catalyst cartridge. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figures 1 to 15 As shown, in an embodiment of the present invention, a marine methanol synthesis device comprises a reactor 1, a catalyst cartridge 7, an air inlet 11 and a discharge port 12, a sealing cover 2 is installed on the top of the reactor 1 by bolt pressing, a heating box 5 is fixedly installed inside the reactor 1, a heater 6 is installed inside the heating box 5 and filled with a heat exchange liquid, a fixing module is also provided in the inner cavity of the reactor 1 and is used to clamp the catalyst cartridge 7, a replenishing mechanism 3 is installed on the top of the sealing cover 2, and a reflux mechanism 4 is installed on the side of the replenishing mechanism 3;

[0044] The supplement mechanism 3 includes a fixed tube 31 fixedly installed on the top of the sealing cover 2, a mounting box 32 fixedly installed on the bottom of the fixed tube 31, through grooves 33 are provided at both ends of the mounting box 32, a limit ring 36 is fixedly installed on the bottom of the inner wall of the fixed tube 31, a transmission shaft 34 is rotatably installed on the top of the inner wall of the fixed tube 31, a plurality of sets of spiral plates 35 are fixedly installed on the upper side of the outer surface of the transmission shaft 34, a limit sleeve 37 is slidably sleeved on the lower side of the outer surface of the transmission shaft 34, the limit sleeve 37 is clearance-matched with the inner ring surface of the limit ring 36, a spring 38 is movably sleeved on the outer surface of the limit sleeve 37, and a bevel gear is installed on the bottom end of the transmission shaft 34;

[0045] The left and right sides of the inner wall of the sealing cover 2 are rotatably mounted with a rotating shaft 21, and the opposite ends of the two sets of rotating shafts 21 are rotatably mounted on the inner wall of the mounting box 32. One end of the two sets of rotating shafts 21 is mounted with another set of bevel gears, and is transmission-connected with the transmission shaft 34. The top of the inner wall of the sealing cover 2 is elastically connected with a spring three 22, and the bottom end of the spring three 22 is elastically connected with a piston 27. The left and right sides of the top of the piston 27 are provided with a slide groove 28, and a slider 29 is slidably mounted inside the slide groove 28. A rack 25 is rotatably mounted on the top of the slider 29. A transmission gear 23 is fixedly mounted on the outer surface of the rotating shaft 21, and the rack 25 is meshed with the transmission gear 23. The space above the piston 27 in the inner cavity of the sealing cover 2 is filled with thermal expansion liquid.

[0046] Effective volume: the compressible space below the piston 27 in the inner cavity of the reactor 1;

[0047] This device is redesigned based on the basic principle of methanol synthesis, and realizes a high-reliability automatic pressurization function, which brings extremely high safety and extremely low use cost in the marine field. By adding thermal expansion liquid into the inner cavity of the sealing cover 2, its volume is expanded by heating, and the piston 27 is driven to move down automatically, the effective volume in the inner cavity of the reactor 1 is changed, and the automatic pressurization function of the device is realized. This design realizes automatic pressurization in conjunction with the increase of reaction temperature, abandons the disadvantages of using air pumps in traditional technologies, not only reduces the ship load, but also saves fuel and improves the reliability of the device.

[0048] Then, the piston 27 is used to drive the rack 25 to move downward, and synchronously drives the transmission gear 23 to rotate, so as to transmit power to the transmission shaft 34 and the spiral plate 35. During the downward movement of the piston 27, the inner cavity of the fixed tube 31 generates a downward axial thrust, and the limit sleeve 37 is safely limited by the spring 38 and the limit ring 36 so that it can only discharge liquid downward but not upward. The downward axial thrust pushes the limit sleeve 37 to move downward, so that the stored thermal expansion liquid enters the sealing cover 2 through the gap of the limit ring 36, thereby providing sufficient hydraulic medium for the piston 27 to move downward to perform the pressurization operation, and also increasing the hydraulic pushing stroke.

[0049] Among them, the fixing module includes a bottom ring 13 located at the bottom of the inner wall of the reactor 1 and an upper clamping plate 16 located above the catalyst cartridge 7. The top of the bottom ring 13 is elastically installed with multiple groups of springs 14, and is elastically connected to the lower clamping plate 15 through the springs 14. The surfaces of the lower clamping plate 15 and the upper clamping plate 16 are provided with multiple groups of through holes for the end of the catalyst cartridge 7 to be plugged in. The catalyst cartridge 7 is clamped between the lower clamping plate 15 and the upper clamping plate 16. The top of the upper clamping plate 16 is provided with four groups of disassembly grooves 17 equidistantly distributed around the circumference. The top of the inner wall of the reactor 1 is provided with four groups of mounting grooves 18 equidistantly distributed around the circumference. The interior of the mounting groove 18 is fixedly connected with a spring 19. One end of the spring 19 is elastically connected with a fixing block 110. The fixing block 110 is adapted to be snap-fitted into the mounting groove 18 and limitedly abutted against the top of the upper clamping plate 16.

[0050] When the catalyst cartridge 7 is disassembled, the upper clamping plate 16 can be rotated and the disassembly groove 17 can be aligned with the fixing block 110 to make way, so that the installation of the upper clamping plate 16 can be released;

[0051] The device utilizes an upper clamping plate 16 and a lower clamping plate 15 to clamp multiple groups of catalyst cartridges 7, so that the catalyst cartridges 7 can be more stable after installation. The upper clamping plate 16 is limited and abutted by the fixed block 110 on the inner wall of the installation groove 18 and cannot move upward. The upper clamping plate 16 is used to press the catalyst cartridge 7 and the lower clamping plate 15 downward so that the spring 14 is compressed. This design enables the catalyst cartridge 7 installed inside the device to adapt to the bumpy movement on the water, and utilizes the deformable spring 14 to absorb the bumps experienced by the device when used on a ship, making the device more adaptable to water.

[0052] Wherein, the reflux mechanism 4 includes a connecting pipe 1 41 fixedly connected to the left side of the fixed pipe 31, one end of the connecting pipe 1 41 is fixedly connected with a connecting pipe 2 42, the connecting pipe 2 42 is vertically fixedly installed on the top of the sealing cover 2, and extends to the inner cavity of the sealing cover 2, the right side of the outer surface of the connecting pipe 2 42 is connected with a connecting pipe 3 45, the bottom sealing sleeve of the inner wall of the connecting pipe 2 42 is provided with a sealing block 44, the left side of the outer surface of the connecting pipe 2 42 is fixedly connected with a connecting pipe 4 46, the connecting pipe 4 46 is designed in a "U" shape, the upper end interface of the connecting pipe 4 46 is located above the sealing block 44, and the lower end interface of the connecting pipe 4 46 is located at the bottom of the outer surface of the connecting pipe 2 42;

[0053] The device also adds a reflux mechanism 4 to supplement the replenishing mechanism 3, which is used to recover the thermal expansion liquid entering the inner cavity of the sealing cover 2. When the piston 27 moves downward and drives the transmission shaft 34 and the spiral plate 35 to rotate forward, the spiral plate 35 is used to generate a downward thrust to open the limit sleeve 37 to replenish the thermal expansion liquid. At this time, the inner cavity of the connecting pipe 1 41 is connected to the fixed pipe 31, and the connecting pipe 2 42 also generates a downward thrust, which just fixes the sealing block 44 and blocks the connecting pipe 3 45. When the piston 27 is reset, the transmission shaft 34 and the spiral plate 35 are reversed, and the axial thrust generated is opposite. At this time, the limit sleeve 37 is responsible for closing the limit ring 36, and the connecting pipe 2 42 generates a negative pressure suction force, and pulls the sealing block 44 upward, opens the connecting pipe 3 45, and connects with the connecting pipe 4 46, so that the thermal expansion liquid is recovered to the storage device through here.

[0054] It should be noted that the thermal expansion fluid cannot flow back through the limit ring 36. Due to the elastic installation design of the limit sleeve 37 and the spring four 38, the limit ring 36 only has the function of passing the thermal expansion fluid downward and cannot perform backflow recovery. Therefore, when the piston 27 moves downward, the pressure of the thermal expansion fluid that gradually expands inside it increases, and it is necessary to use the one-way valve function of the limit ring 36 to block it to prevent the occurrence of backflow.

[0055] The inner wall of the connecting pipe 2 42 is fixedly provided with a limiting column 43 located between the upper opening of the limiting column 43 and the sealing block 44. When the top end of the sealing block 44 abuts against the limiting column 43, the connecting pipe 4 46 is connected with the connecting pipe 3 45.

[0056] The limiting column 43 is responsible for limiting the sealing block 44 to prevent the sealing block 44 from moving upward and blocking the opening of the connecting pipe 1 41. When the sealing block 44 moves upward to the highest point, the connecting pipe 3 45 is connected to the connecting pipe 4 46, and the thermal expansion fluid can flow back along this point.

[0057] The discharge port 12 is installed at the bottom of the reactor 1, the air inlet 11 is provided in two groups and symmetrically distributed on the left and right sides of the reactor 1, and the top of the fixed pipe 31 is used for externally connecting a device for storing thermal expansion liquid;

[0058] The thermal expansion fluid can be kerosene, which is easy to obtain, low in cost, has a high ignition point and is non-flammable. It can also actively lubricate the piston 27 and reduce the resistance it encounters during movement.

[0059] The two sets of rotating shafts 21 have opposite directions and the same rotation speed. The two ends of the spring 38 are elastically connected to the limit sleeve 37 and the limit ring 36 respectively. The top of the lower end of the limit sleeve 37 is sealed against the limit ring 36.

[0060] The rack 25 and the transmission gear 23 convert the linear motion of the piston 27 into the rotational motion of the transmission shaft 34 and the spiral plate 35, and generate an "automatic pump" to realize the automatic filling function of the thermal expansion liquid.

[0061] The rack 25 is tilted and meshes with the outer surface of the transmission gear 23. When the piston 27 moves to the lowest point, the rack 25 is in a vertical state.

[0062] The two sets of racks 25 are symmetrically distributed on the left and right sides of the inner cavity of the sealing cover 2. When the racks 25 move downward, the two sets of rotating shafts 21 generate rotating forces with opposite directions and the same speed, and drive the transmission shaft 34 to rotate.

[0063] The transmission gear 23 has limit grooves 24 at both ends, the outer surface of the rack 25 is movably connected to the limit plate 26, the inner side of the limit plate 26 is fixedly connected to a clamping column, and is limitedly clamped in the limit groove 24 by the clamping column, and the top of the piston 27 is fixedly connected to the heat pipe 210;

[0064] The clamping column on the inner wall of the limit plate 26 is responsible for movably clamping in the limit groove 24, so that the rack 25 is limited and overlapped on the outer surface of the transmission gear 23. When the rack 25 moves downward and gradually becomes vertical, the rack 25 can be limited, but the limit plate 26 and the rack 25 are in a movably clamped relationship, so that there will be no interference with the downward movement of the rack 25 in the vertical state.

[0065] After the rack 25 moves to the vertical state, the rack 25 moves in the vertical direction under the limiting action of the limiting plate 26 and always keeps meshing with the transmission gear 23;

[0066] When the rack 25 moves to a vertical state, the limiting plate 26 is in a horizontal state. At this time, the rack 25 can continue to move downward and cooperate with the transmission gear 23 to generate a longer movement stroke.

[0067] Working principle and usage process:

[0068] When the device is working, it mainly receives carbon dioxide collected from the main engine exhaust gas through two groups of air inlets 11, and hydrogen produced by the main engine exhaust gas and high-temperature hot water recovery power generation as the source of methanol synthesis, and discharges the produced methanol through the discharge port 12;

[0069] First, open the sealing cover 2, and insert the catalyst cartridge 7 into the heating box 5, so that its bottom end is plugged into the top of the lower clamping plate 15, and the spring 14 is compressed downward, then, the upper clamping plate 16 is aligned with the top of the catalyst cartridge 7 and plugged in, and the upper clamping plate 16 is pressed downward, driving the catalyst cartridge 7 and the lower clamping plate 15 to be pressed downward as a whole, and the spring 14 is further compressed, and the upper clamping plate 16 is downwardly abutted against the inclined surface of the fixing block 110, and the fixing block 110 is pushed into the mounting groove 18, and after the upper clamping plate 16 is located below the fixing block 110, the fixing block 110 protrudes from the inner wall of the reactor 1 again under the action of the spring 2 19, and the upper part of the upper clamping plate 16 is limitedly abutted, and the catalyst cartridge 7 is fixed;

[0070] Then, sufficient amounts of carbon dioxide and hydrogen are introduced into the reactor 1 through the air inlet 11, and the heater 6 is started to heat the heat exchange liquid in the inner cavity of the heating box 5, and the catalyst cylinder 7 is heated through the inner wall of the heating box 5, so that the temperature of the inner cavity of the reactor 1 rises to between 200°C and 300°C. The heat is transferred to the thermal expansion liquid above the piston 27 through the heat pipe 210, and its volume begins to expand and pushes the piston 27 downward, compressing the effective volume in the inner cavity of the reactor 1 to perform a pressurization operation. The piston 27 begins to drive the slider 29 and the rack 25 to move downward, and the rack 25 meshes with the transmission gear 23, and by driving the rotating shaft 21 to rotate, the power is transmitted to the transmission shaft 34 and the spiral plate 35. The axial thrust generated by the rotation of the spiral plate 35 begins to act downward, and partially acts on the reflux mechanism 4;

[0071] In the fixed pipe 31, as Figure 5As shown, the spiral plate 35 generates a downward pumping thrust, which, on the one hand, drives the thermal expansion liquid in the fixed tube 31 to push the limiting sleeve 37 downward, and makes the thermal expansion liquid flow downward along the gap of the limiting ring 36 into the installation box 32, and then flows into the inner cavity of the sealing cover 2 through the through groove 33, and serves as a hydraulic supplement for the downward movement of the piston 27. On the other hand, the thrust also absorbs the thermal expansion liquid from the device storing the thermal expansion liquid through the top opening of the fixed tube 31 for continuous replenishment;

[0072] In the reflux mechanism 4, the thermal expansion liquid passes through the connecting pipe 1 41 and the connecting pipe 2 42 to generate a thrust force on the sealing block 44 downward, and firmly fixes the sealing block 44 to the bottom of the inner wall of the connecting pipe 2 42, thereby blocking the connecting pipe 3 45;

[0073] When the rack 25 is driven to move downward, the limit plate 26 is used to limit it and keep the rack 25 always meshing with the transmission gear 23. After the rack 25 moves to a vertical state, the limit plate 26 limits the rack 25 so that it keeps moving vertically downward. When the piston 27 moves to the lowest point, the device is pressurized to a specified pressure, and the raw material is catalyzed by the catalyst cartridge 7 to produce methanol, which is then discharged.

[0074] When the device stops running and the catalyst cartridge 7 is replaced, it is first necessary to release the pressure, turn off the heater 6, and restore the internal temperature of the device to normal. The thermal expansion liquid begins to restore its original volume. At this time, the piston 27 moves downward and resets under the drive of the spring three 22. At this time, the rack 25 cooperates with the transmission gear 23 and realizes the reversal of the transmission shaft 34. At this time, the limit sleeve 37 closes the gap of the limit ring 36 upward under the action of the reverse thrust generated by the spiral plate 35, but will generate negative pressure suction on the inner cavity of the connecting tube 1 41 and the connecting tube 2 42. The sealing block 44 begins to move downward gradually until it abuts against the limit column 43. At this time, the connecting tube three 45 is connected with the connecting tube four 46, and the thermal expansion liquid entering the inner cavity of the sealing cover 2 begins to flow back to the storage device along the connecting tube three 45, the connecting tube four 46, the connecting tube two 42 and the connecting tube one 41.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine methanol synthesis device, comprising a reactor (1), a catalyst cartridge (7), an air inlet (11) and a discharge port (12), wherein a sealing cover (2) is installed on the top of the reactor (1) by bolting, a heating box (5) is fixedly installed inside the reactor (1), a heater (6) is installed inside the heating box (5) and is filled with a heat exchange fluid, and is characterized in that: The inner cavity of the reactor (1) is also provided with a fixing module for clamping the catalyst cartridge (7); a replenishing mechanism (3) is installed on the top of the sealing cover (2); and a reflux mechanism (4) is installed on the side of the replenishing mechanism (3); The supplementing mechanism (3) comprises a fixed tube (31) fixedly mounted on the top of the sealing cover (2); a mounting box (32) is fixedly mounted on the bottom of the fixed tube (31); through grooves (33) are provided at both ends of the mounting box (32); a limit ring (36) is fixedly mounted on the bottom of the inner wall of the fixed tube (31); a transmission shaft (34) is rotatably mounted on the top of the inner wall of the fixed tube (31); a plurality of groups of spiral plates (35) are fixedly mounted on the upper side of the outer surface of the transmission shaft (34); a limit sleeve (37) is slidably sleeved on the lower side of the outer surface of the transmission shaft (34); the limit sleeve (37) is clearance-fitted with the inner ring surface of the limit ring (36); a spring four (38) is movably sleeved on the outer surface of the limit sleeve (37); and a bevel gear is mounted on the bottom end of the transmission shaft (34); Rotating shafts (21) are rotatably mounted on both sides of the inner wall of the sealing cover (2). The opposite ends of the two groups of rotating shafts (21) are rotatably mounted on the inner wall of the mounting box (32). Another group of bevel gears are mounted on one end of the two groups of rotating shafts (21) and are transmission-connected to the transmission shaft (34). A spring three (22) is elastically connected to the top of the inner wall of the sealing cover (2). A piston (27) is elastically connected to the bottom end of the spring three (22). A slide groove (28) is provided on both sides of the top of the piston (27). A slider (29) is slidably mounted inside the slide groove (28). A rack (25) is rotatably mounted on the top of the slider (29). A transmission gear (23) is fixedly mounted on the outer surface of the rotating shaft (21). The rack (25) meshes with the transmission gear (23). The space above the piston (27) in the inner cavity of the sealing cover (2) is filled with thermal expansion liquid. The fixing module comprises a bottom ring (13) located at the bottom of the inner wall of the reaction kettle (1) and an upper clamping plate (16) located above the catalyst cartridge (7); the top of the bottom ring (13) is elastically mounted with a plurality of groups of springs (14) and is elastically connected to a lower clamping plate (15) via the springs (14); the surfaces of the lower clamping plate (15) and the upper clamping plate (16) are both provided with a plurality of groups of through holes for inserting the end of the catalyst cartridge (7); the catalyst cartridge (7) is clamped between the lower clamping plate (15) and the upper clamping plate (16). The top of the upper clamping plate (16) is provided with four groups of disassembly grooves (17) which are equidistantly distributed around the circumference, and the top of the inner wall of the reactor (1) is provided with four groups of installation grooves (18) which are equidistantly distributed around the circumference, and the inside of the installation groove (18) is fixedly connected with a second spring (19), and one end of the second spring (19) is elastically connected with a fixing block (110), and the fixing block (110) is adapted to be snap-fitted into the installation groove (18) and limitedly abutted against the top of the upper clamping plate (16); When the catalyst cartridge (7) is disassembled, the upper clamping plate (16) is rotated and the disassembly groove (17) is aligned with the fixed block (110) to make way, thereby releasing the installation of the upper clamping plate (16); the reflux mechanism (4) comprises a connecting pipe 1 (41) fixedly connected to the left side of the fixed pipe (31); one end of the connecting pipe 1 (41) is fixedly connected to a connecting pipe 2 (42); the connecting pipe 2 (42) is vertically fixedly installed on the top of the sealing cover (2) and extends to the inner side of the sealing cover (2). The connecting tube 2 (42) is connected to the cavity on the right side of the outer surface thereof with a connecting tube 3 (45), a sealing block (44) is provided on the bottom sealing sleeve of the inner wall of the connecting tube 2 (42), a connecting tube 4 (46) is fixedly connected to the left side of the outer surface of the connecting tube 2 (42), the connecting tube 4 (46) is designed in a "U" shape, the upper end interface of the connecting tube 4 (46) is located above the sealing block (44), and the lower end interface of the connecting tube 4 (46) is located at the bottom of the outer surface of the connecting tube 2 (42).

2. A marine methanol synthesis device according to claim 1, characterized in that: A limiting column (43) located between the upper end opening of the limiting column (43) and the sealing block (44) is fixedly mounted on the inner wall of the connecting pipe (42); when the top end of the sealing block (44) abuts against the limiting column (43), the connecting pipe (46) is connected to the connecting pipe (45).

3. A marine methanol synthesis device according to claim 2, characterized in that: The discharge port (12) is installed at the bottom end of the reactor (1), the air inlet (11) is arranged in two groups and symmetrically distributed on the left and right sides of the reactor (1), and the top end of the fixed pipe (31) is used to connect an external device for storing thermal expansion liquid.

4. A marine methanol synthesis device according to claim 3, characterized in that: The two groups of rotating shafts (21) rotate in opposite directions and have the same rotation speed. The two ends of the spring (38) are elastically connected to the limit sleeve (37) and the limit ring (36) respectively. The top of the lower end of the limit sleeve (37) is in sealing contact with the limit ring (36).

5. A marine methanol synthesis device according to claim 4, characterized in that: The rack (25) is arranged in an inclined manner and meshes with and overlaps the outer surface of the transmission gear (23); when the piston (27) moves to the lowest point, the rack (25) is in a vertical state.

6. A marine methanol synthesis device according to claim 5, characterized in that: Both ends of the transmission gear (23) are provided with limit grooves (24); the outer surface of the rack (25) is movably engaged with a limit plate (26); the inner side surface of the limit plate (26) is fixedly connected with a clamping column and is limitedly engaged with the limit groove (24) by the clamping column; and the top of the piston (27) is fixedly connected with a heat conduction pipe (210).

7. A marine methanol synthesis device according to claim 6, characterized in that: After the rack (25) moves to a vertical state, the rack (25) moves in a vertical direction under the limiting action of the limiting plate (26) and always remains in mesh with the transmission gear (23).

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