Green methanol preparation device and method

Abstract

The present application relates to the field of methanol preparation, and discloses a green methanol preparation device, which comprises a frame body, a preparation tank is installed on the frame body, a tank cover is arranged at the upper opening of the preparation tank, and a feeding valve and an air inlet valve are arranged on the tank cover, a tank bottom is arranged at the lower opening of the preparation tank, an exhaust pipe is arranged on one side of the tank bottom, an exhaust valve is arranged at the tail end of the exhaust pipe, an upper fixing disc and a lower fixing disc are arranged on the inner wall of the preparation tank, a plurality of upper fixing holes are arranged on the end face of the upper fixing disc in an array, a plurality of lower fixing holes coaxial with the upper fixing holes are arranged on the end face of the lower fixing disc in correspondence, a preparation pipeline is arranged between each upper fixing hole and the lower fixing hole coaxial therewith, a screw conveyor is arranged in each preparation pipeline, a plurality of notches are arranged on the surface of the helical blade of the screw conveyor in an array along the extending direction, and a head is arranged on the lower end of the screw shaft of the screw conveyor, and the head is used for plugging the lower pipe opening of the preparation pipeline.

Description

Technical Field

[0001] This invention relates to the field of methanol preparation, and more specifically to a green methanol preparation apparatus and method. Background Technology

[0002] The industrial production of methanol is a mature chemical process. Its core idea is to convert carbonaceous raw materials (such as coal and natural gas) into syngas (carbon monoxide and hydrogen), react under high pressure with a catalyst to produce crude methanol, and finally purify it through distillation to obtain the final product. In the process of producing crude methanol, a copper-based catalyst is used as the catalytic medium. During the reaction, the syngas feedstock passes through a pipe containing the copper-based catalyst to obtain crude methanol gas. This method has some shortcomings. Specifically, the effective contact between the syngas and the copper-based catalyst is one of the factors affecting the efficiency of the synthesis reaction. Therefore, it is necessary to stir the copper-based catalyst to ensure uniform, efficient, and comprehensive contact between the syngas and the catalyst. However, since the copper-based catalyst is a fixed particle, mechanical stirring, such as using blade stirring technology, can easily lead to mechanical impact damage to the catalyst, potentially affecting the synthesis reaction results.

[0003] Based on the above, the present invention proposes a green methanol preparation device and method. Summary of the Invention

[0004] To address the problems mentioned in the background above, the present invention provides a green methanol preparation apparatus and method.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0006] A green methanol preparation device includes a frame, on which a preparation tank is installed. The upper opening of the preparation tank is provided with a tank cover, and the tank cover is provided with a feed valve and an air inlet valve. The lower opening of the preparation tank is provided with a tank bottom, and an exhaust pipe is provided on one side of the tank bottom. An exhaust valve is provided at the end of the exhaust pipe.

[0007] Two fixed disks are fixedly installed on the inner wall of the preparation tank along the center line, namely the upper fixed disk and the lower fixed disk. The end face of the upper fixed disk is provided with multiple upper fixed holes, and the end face of the lower fixed disk is provided with lower fixed holes coaxial with the upper fixed holes, and multiple lower fixed holes are provided accordingly. A preparation pipe is provided between the upper fixed hole and the lower fixed hole coaxial with it, and multiple preparation pipes are provided accordingly.

[0008] Each preparation pipeline is equipped with an auger. The surface of the auger's spiral blades has several notches arranged in an array along the extension direction. The lower end of the auger shaft is equipped with a cap, which is used to seal the lower opening of the preparation pipeline.

[0009] Furthermore, the upper surface of the end cap is provided with an upper connecting hole that communicates with the preparation pipeline, and the side of the end cap is provided with a lower side hole that communicates with the preparation tank. The diameter of the upper connecting hole and the lower side hole is smaller than the size of the copper-based catalyst.

[0010] Furthermore, during methanol preparation, the auger rotates, and the rotating auger is used to pull the copper-based catalyst upwards.

[0011] Furthermore, the outer surface of the preparation tank is provided with an inlet connector and an outlet connector, both of which are located between two fixed discs.

[0012] Furthermore, it also includes a drive component one, which is used to drive the end cap to move axially;

[0013] A discharge pipe is installed at the bottom of the tank, and a discharge valve is installed at the end of the discharge pipe.

[0014] Furthermore, the lower end of the auger shaft is coaxially connected to a connecting shaft, and multiple connecting shafts are provided. The lower ends of all connecting shafts are connected through a lower connecting plate, and the connecting shaft and the lower connecting plate are movably connected. A connecting rod is connected to the lower surface of the lower connecting plate. The lower end of the connecting rod extends out of the preparation tank and is connected to a linear module. The linear module is used to drive the connecting rod to move axially.

[0015] Furthermore, a motor is installed on the lid, the output shaft of the motor is coaxial with the preparation tank, the output end of the motor extends into the lid and is provided with pusher blades, the lower surface of the pusher blades is in contact with the upper surface of the upper fixed plate, the pusher blades are in the shape of arc blades, and multiple pusher blades are arranged in an array along the circumferential direction of the output shaft of the motor.

[0016] Furthermore, it also includes a second drive component, which is used to drive the auger to rotate.

[0017] Furthermore, the second drive assembly includes a drive shaft that is hollow and sleeved outside the connecting shaft. The outer circular surface of the drive shaft is provided with a pin hole in the radial direction and a protruding pin is provided inside the pin hole.

[0018] The outer circular surface of the connecting shaft is provided with a drive groove in the shape of an annular groove. The upper wall of the drive groove is composed of an upper inclined surface and an upper flat surface. The upper flat surface is arranged vertically and multiple such surfaces are arranged in an array along the circumference of the connecting shaft. Adjacent upper flat surfaces are connected by an upper inclined surface, and the upper inclined surface is arranged at an angle. Multiple upper inclined surfaces are arranged accordingly.

[0019] The lower wall of the drive groove consists of a lower inclined surface and a lower flat surface. The lower flat surface is arranged vertically and multiple such surfaces are arranged in an array along the circumferential direction of the connecting shaft. Adjacent lower flat surfaces are connected by the lower inclined surface, which is arranged at an angle to the upper inclined surface.

[0020] The upper plane is located above the lower inclined plane, the lower plane is located below the upper inclined plane, and the end of the protruding pin is located in the drive groove;

[0021] Multiple drive shafts are provided for the auger, and all drive shafts are connected through an upper connecting plate, with the drive shaft and the upper connecting plate being a movable connection.

[0022] A guide rod is connected to the lower surface of the upper connecting plate. The lower end of the guide rod passes through the clearance hole set on the lower connecting plate and extends out of the preparation tank. A support is provided, and a vibrator is set on the support. A spring is sleeved on the outside of the guide rod between the upper and lower connecting plates.

[0023] A method for producing green methanol includes the following steps:

[0024] Step 1: The syngas feedstock for methanol production enters the preparation pipeline through the open inlet valve and upper fixing hole, and comes into contact with the copper-based catalyst. At the same time, the screw conveyor is rotated by the second drive component. The two work together to produce crude methanol gas.

[0025] Step 2: Crude methanol gas is output through the exhaust pipe and exhaust valve.

[0026] Compared with the prior art, the beneficial effects of this invention are as follows:

[0027] Technical Advantage 1. In this case, when preparing crude methanol, the copper-based catalyst is stirred by driving the auger to rotate. The rotation of the auger pulls the copper-based catalyst upward. Its technical advantage is that, due to the presence of the notch, although the copper-based catalyst tends to move upward, it leaks back down through the notch after moving a small distance, so it will not leave the preparation pipeline. Also, since the rotation of the auger blades pulls the copper-based catalyst, it is difficult to cause the copper-based catalyst to break. Therefore, the stirring structure composed of the auger and the notch can not only ensure that the methanol synthesis gas feedstock (such as carbon monoxide, carbon dioxide and hydrogen) is in uniform, sufficient and comprehensive contact with the copper-based catalyst, promoting the high efficiency of methanol preparation, but also ensure that the copper-based catalyst is not damaged by stirring.

[0028] Furthermore, if the auger rotates and pulls the copper-based catalyst downwards, the catalyst will be subjected to downward pressure and easily break due to the blockage of the lower end of the preparation pipeline. If existing common mechanical stirring technologies such as blades are used, they are prone to physical wear. In contrast, the stirring technology in this case can solve this problem.

[0029] Technical Effect 2: In this case, the preparation pipeline array is set up with multiple pipelines, which has the effect of high preparation efficiency. On this basis, all the screw conveyors are driven by the same power source (i.e., drive component two) to rotate. Therefore, the synthesis reaction conditions in each preparation pipeline are consistent, and the service life of the copper-based catalyst in each preparation pipeline is consistent. Therefore, when replacing the copper-based catalyst regularly, there is no problem that the copper-based catalyst in a certain preparation pipeline is replaced before reaching the critical service life or that the copper-based catalyst in a certain preparation pipeline has reached the critical service life but has not been replaced. The critical service life refers to whether the activity of the copper-based catalyst can serve as a catalytic medium for the synthesis reaction. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 Cross-sectional view of the present invention Figure 1 ;

[0032] Figure 3 Cross-sectional view of the present invention Figure 2 ;

[0033] Figure 4 This is a schematic diagram of the auger, end cap, and connecting shaft;

[0034] Figure 5 This is a schematic diagram of the connecting shaft and the drive shaft;

[0035] Figure 6 This is a schematic diagram of the drive slot;

[0036] Figure 7 This is a schematic diagram of driver component one and driver component two;

[0037] Figure 8 This is a schematic diagram of the second driver component.

[0038] The labels in the attached diagram are:

[0039] 100. Frame; 101. Preparation tank; 102. Water inlet connector; 103. Water outlet connector; 104. Tank cover; 105. Feed valve; 106. Exhaust pipe; 107. Exhaust valve; 108. Discharge pipe; 109. Discharge valve; 110. Upper fixing plate; 111. Lower fixing plate; 112. Preparation pipeline; 113. Screwdriver; 114. Notch; 115. Connecting shaft; 116. End cap; 117. Upper connecting hole; 118. Lower side hole; 119. Drive shaft; 120. Protruding pin; 121. Drive groove; 122. Lower connecting plate; 123. Connecting rod; 124. Linear module; 125. Vibrator; 126. Support; 127. Guide rod; 128. Upper connecting plate; 129. Spring; 130. Push blade; 131. Motor. Detailed Implementation

[0040] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0041] Reference Figures 1-3 A green methanol preparation device includes a frame 100, on which a preparation tank 101 is installed.

[0042] The preparation tank 101 is provided with a tank cover 104 at the upper opening, and the tank cover 104 is provided with a feed valve 105 and an air inlet valve.

[0043] The preparation tank 101 has a tank bottom at the lower opening and a discharge pipe 108 at the bottom of the tank bottom. A discharge valve 109 is provided at the end of the discharge pipe 108. An exhaust pipe 106 is provided on one side of the tank bottom and an exhaust valve 107 is provided at the end of the exhaust pipe 106.

[0044] The inner wall of the preparation tank 101 is fixedly provided with two fixed disks along the center line direction, namely the upper fixed disk 110 and the lower fixed disk 111. Furthermore, the end face of the upper fixed disk 110 is provided with multiple upper fixed holes, and the end face of the lower fixed disk 111 is provided with lower fixed holes coaxial with the upper fixed holes, and multiple lower fixed holes are provided accordingly. A preparation pipe 112 is provided between the upper fixed holes and the lower fixed holes coaxial with them, and multiple preparation pipes 112 are provided accordingly.

[0045] Each preparation pipe 112 is equipped with an auger 113. The surface of the spiral blades of the auger 113 has several notches 114 arranged along the extension direction. The lower end of the auger shaft of the auger 113 is provided with a cap 116. Initially, the cap 116 is used to block the lower opening of the preparation pipe 112. Further, the upper surface of the cap 116 is provided with an upper connecting hole 117 communicating with the preparation pipe 112. The side of the cap 116 is provided with a lower side hole 118 communicating with the preparation tank 101. The aperture of the upper connecting hole 117 and the lower side hole 118 is small, smaller than the size of the copper-based catalyst. Therefore, through the cooperation of the upper connecting hole 117 and the lower side hole 118, the crude methanol gas in the preparation pipe 112 can be discharged to the bottom of the tank and finally output through the exhaust pipe 106 and the open exhaust valve 107, while the copper-based catalyst remains in the preparation pipe 112.

[0046] In the preparation of crude methanol, the copper-based catalyst is stirred by driving the auger 113 to rotate. The rotation of the auger 113 pulls the copper-based catalyst upwards. The technical advantage is that, due to the presence of the notch 114, although the copper-based catalyst tends to move upwards, it leaks back down through the notch 114 after moving a small distance, so it does not leave the preparation pipe 112. Furthermore, since the rotation of the blades of the auger 113 pulls the copper-based catalyst, it is difficult to cause the copper-based catalyst to break. Therefore, the stirring structure composed of the auger 113 and the notch 114 can not only ensure that the methanol synthesis gas feedstock (such as carbon monoxide, carbon dioxide, and hydrogen) is in uniform, sufficient, and comprehensive contact with the copper-based catalyst, promoting the high efficiency of methanol preparation, but also ensure that the copper-based catalyst is not damaged by stirring.

[0047] Furthermore, if the auger 113 rotates and pulls the copper-based catalyst downwards, the copper-based catalyst will be subjected to downward pressure and easily break due to the blockage of the lower opening of the preparation pipe 112. If existing common mechanical stirring technologies such as blades are used, they are prone to physical wear. In contrast, the stirring technology in this case can solve this problem.

[0048] Reference Figure 3 During the methanol preparation process, the synthesis reaction releases a large amount of heat. Therefore, the shell side (referring to the space outside the preparation tank 101 and the preparation pipeline 112) needs to be filled with water to remove the heat of reaction through water exchange. Therefore, the outer surface of the preparation tank 101 is provided with a water inlet connector 102 and a water outlet connector 103, both of which are located between two fixed plates. Water medium is supplied to the shell side through the water inlet connector 102 and the water outlet connector 103 to remove the heat of reaction.

[0049] The drive component moves the end cap 116 up and down, thereby sealing or unsealing the opening of the preparation pipeline 112. Unsealing is used to replace the copper-based catalyst, which has a limited lifespan and requires replacement after prolonged use. For details, refer to... Figure 5 and Figure 7 The lower end of the auger shaft of the auger 113 is coaxially connected to a connecting shaft 115. Multiple connecting shafts 115 are provided. The lower ends of all connecting shafts 115 are connected through a lower connecting plate 122, and the connecting shaft 115 and the lower connecting plate 122 are movably connected. A connecting rod 123 is connected to the lower surface of the lower connecting plate 122. The lower end of the connecting rod 123 extends out of the preparation tank 101 and is connected to the linear module 124. The linear module 124 is used to drive the connecting rod 123 to move axially, thereby moving the auger 113 and the end cap 116 up and down together, thereby sealing or unsealing the lower opening of the preparation pipe 112.

[0050] The linear module 124 uses existing lead screw linear movement technology, etc., which will not be elaborated on.

[0051] Furthermore, refer to Figure 2 and Figure 3 A motor 131 is provided on the lid 104. The output shaft of the motor 131 is coaxial with the preparation tank 101. The output end of the motor 131 extends into the lid 104 and is provided with a pusher blade 130. The lower surface of the pusher blade 130 is in contact with the upper surface of the upper fixed plate 110. The pusher blade 130 is in the shape of an arc blade and multiple pusher blades are arranged in an array along the circumferential direction of the output shaft of the motor 131.

[0052] When it is necessary to replace the copper-based catalyst, first move the end cap 116 down to remove the seal on the lower opening of the preparation pipeline 112. The copper-based catalyst in the preparation pipeline 112 will be discharged through the discharge pipe 108 and the open discharge valve 109 under the action of gravity. After the process is completed, the end cap 116 will be used to seal the lower opening of the preparation pipeline 112.

[0053] Then, the new copper-based catalyst is poured into the tank cover 104 through the open feed valve 105. Some of the copper-based catalyst falls directly into the preparation pipe 112, while the remaining copper-based catalyst accumulates on the upper fixed plate 110. At the same time, the motor 131 drives the pusher blade 130 to rotate, and the pusher blade 130 scrapes and feeds the copper-based catalyst, so that the copper-based catalyst falls into the preparation pipe 112, realizing the replacement of the copper-based catalyst.

[0054] The auger 113 is rotated by the second drive component. For details, please refer to... Figures 5-8 The second drive assembly includes a drive shaft 119 that is hollow and sleeved outside the connecting shaft 115. The outer circular surface of the drive shaft 119 is provided with a pin hole in the radial direction and a protruding pin 120 is provided in the pin hole.

[0055] The outer circular surface of the connecting shaft 115 is provided with a drive groove 121 in the shape of an annular groove. The upper groove wall of the drive groove 121 is composed of an upper inclined surface and an upper flat surface. Furthermore, the upper flat surface is arranged vertically and multiple such surfaces are arranged in an array along the circumferential direction of the connecting shaft 115. Adjacent upper flat surfaces are connected by an upper inclined surface, and the upper inclined surface is arranged at an inclination. Multiple upper inclined surfaces are provided accordingly.

[0056] The lower wall of the drive groove 121 is composed of a lower inclined surface and a lower plane. Furthermore, the lower plane is arranged vertically and multiple planes are arranged in an array along the circumferential direction of the connecting shaft 115. Adjacent lower planes are connected by the lower inclined surface and the lower inclined surface is arranged at an angle. The lower inclined surface and the upper inclined surface are arranged at an angle, that is, the planes on which the two planes are located intersect.

[0057] The upper plane is located above the lower slope, and the lower plane is located below the upper slope.

[0058] The end of the protruding pin 120 is located inside the drive groove 121; therefore, when the drive shaft 119 moves axially back and forth, the connecting shaft 115 can be driven to rotate by the cooperation of the protruding pin 120 with the upper and lower inclined surfaces of the drive groove 121. The connecting shaft 115 rotates together with the auger 113. Preferably, the end cap 116 is movably connected to the auger shaft of the auger 113, for example, by a bearing. This is to prevent the end cap 116 from rotating with the auger 113 and causing wear between the end cap 116 and the lower opening of the preparation pipe 112 due to friction.

[0059] Furthermore, multiple drive shafts 119 are provided corresponding to the auger 113, and all drive shafts 119 are connected to each other through the upper connecting plate 128, and the connection method is a movable connection, such as through bearings.

[0060] A guide rod 127 is connected to the lower surface of the upper connecting plate 128. The lower end of the guide rod 127 passes through the clearance hole provided on the lower connecting plate 122 and extends out of the preparation tank 101. A support 126 is provided, and a vibrator 125 is provided on the support 126. A spring 129 is sleeved on the outside of the guide rod 127 between the upper connecting plate 128 and the lower connecting plate 122.

[0061] Through the cooperation of the vibrator 125, guide rod 127 and spring 129, the upper connecting plate 128 can be driven to move up and down reciprocally, thereby driving the drive shaft 119 to move axially reciprocally, causing the auger 113 to rotate.

[0062] A method for a green methanol production apparatus: the syngas feedstock for methanol production enters the preparation pipeline 112 through an open inlet valve and an upper fixed hole, and then flows into the bottom of the tank through an upper connecting hole 117 and a lower side hole 118. During this process, the syngas feedstock reacts to produce crude methanol gas under the catalysis of a copper-based catalyst. The crude methanol gas is finally output through an exhaust pipe 106 and an exhaust valve 107.

[0063] During the process of producing crude methanol from syngas feedstock, the auger 113 is rotated by the drive component 2, which makes the contact between the copper-based catalyst and the syngas more thorough, uniform and comprehensive, further promoting the efficient and effective occurrence of the synthesis reaction.

[0064] When the copper-based catalyst needs to be replaced after a preset time: When the copper-based catalyst needs to be replaced, first use the drive component to move the end cap 116 down to remove the seal on the lower opening of the preparation pipeline 112. The copper-based catalyst in the preparation pipeline 112 is discharged through the discharge pipe 108 and the open discharge valve 109 under the action of gravity. After the process is completed, the end cap 116 is used to seal the lower opening of the preparation pipeline 112.

[0065] Then, the new copper-based catalyst is poured into the tank cover 104 through the open feed valve 105. Some of the copper-based catalyst falls directly into the preparation pipe 112, while the remaining copper-based catalyst accumulates on the upper fixed plate 110. At the same time, the motor 131 drives the pusher blade 130 to rotate, and the pusher blade 130 scrapes and feeds the copper-based catalyst, so that the copper-based catalyst falls into the preparation pipe 112, realizing the replacement of the copper-based catalyst.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A green methanol preparation apparatus, comprising a frame (100) on which a preparation tank (101) is mounted, characterized in that, The preparation tank (101) is provided with a tank cover (104) at the upper opening and a feed valve (105) and an air inlet valve on the tank cover (104). The preparation tank (101) is provided with a tank bottom at the lower opening and an exhaust pipe (106) is provided on one side of the tank bottom. An exhaust valve (107) is provided at the end of the exhaust pipe (106). The inner wall of the preparation tank (101) is fixedly provided with two fixed disks along the center line direction, namely the upper fixed disk (110) and the lower fixed disk (111). The end face of the upper fixed disk (110) is provided with multiple upper fixed holes, and the end face of the lower fixed disk (111) is provided with a lower fixed hole coaxial with the upper fixed hole, and multiple lower fixed holes are provided accordingly. A preparation pipe (112) is provided between the upper fixed hole and the lower fixed hole coaxial with it, and multiple preparation pipes (112) are provided accordingly. Each preparation pipe (112) is equipped with an auger (113). The surface of the spiral blades of the auger (113) has several notches (114) arranged along the extension direction. The lower end of the auger shaft of the auger (113) is provided with a cap (116). The cap (116) is used to seal the lower opening of the preparation pipe (112).

2. The green methanol preparation apparatus according to claim 1, characterized in that, The upper surface of the end cap (116) is provided with an upper connecting hole (117) that communicates with the preparation pipeline (112), and the side of the end cap (116) is provided with a lower side hole (118) that communicates with the preparation tank (101). The aperture of the upper connecting hole (117) and the lower side hole (118) is smaller than the size of the copper-based catalyst.

3. A green methanol preparation apparatus according to claim 1 or 2, characterized in that, During methanol preparation, the auger (113) rotates, and the rotating auger (113) is used to pull the copper-based catalyst upward.

4. The green methanol preparation apparatus according to claim 1, characterized in that, The outer surface of the preparation tank (101) is provided with an inlet connector (102) and an outlet connector (103), both of which are located between two fixed plates.

5. The green methanol preparation apparatus according to claim 3, characterized in that, It also includes a drive assembly 1, which is used to drive the end cap (116) to move axially; A discharge pipe (108) is provided at the bottom of the tank, and a discharge valve (109) is provided at the end of the discharge pipe (108).

6. The green methanol preparation apparatus according to claim 5, characterized in that, The lower end of the auger shaft of the auger (113) is coaxially connected to a connecting shaft (115). Multiple connecting shafts (115) are provided. The lower ends of all connecting shafts (115) are connected through a lower connecting plate (122), and the connecting shaft (115) and the lower connecting plate (122) are movably connected. A connecting rod (123) is connected to the lower surface of the lower connecting plate (122). The lower end of the connecting rod (123) extends out of the preparation tank (101) and is connected to a linear module (124). The linear module (124) is used to drive the connecting rod (123) to move axially.

7. A green methanol preparation apparatus according to claim 5 or 6, characterized in that, A motor (131) is provided on the lid (104). The output shaft of the motor (131) is coaxial with the preparation tank (101). The output end of the motor (131) extends into the lid (104) and is provided with pusher blades (130). The lower surface of the pusher blades (130) is in contact with the upper surface of the upper fixed plate (110). The pusher blades (130) are in the shape of arc blades and are arranged in an array along the circumferential direction of the output shaft of the motor (131).

8. A green methanol preparation apparatus according to claim 6, characterized in that, It also includes a second drive component, which is used to drive the auger (113) to rotate.

9. A green methanol preparation apparatus according to claim 8, characterized in that, The second drive assembly includes a drive shaft (119) that is hollow and sleeved outside the connecting shaft (115). The outer circular surface of the drive shaft (119) is provided with a pin hole in the radial direction and a protruding pin (120) is provided inside the pin hole. The outer circular surface of the connecting shaft (115) is provided with a drive groove (121) in the shape of an annular groove. The upper groove wall of the drive groove (121) is composed of an upper inclined surface and an upper plane. The upper plane is arranged vertically and multiple planes are arranged in an array along the circumferential direction of the connecting shaft (115). Adjacent upper planes are connected by the upper inclined surface and the upper inclined surface is arranged at an inclination. Multiple upper inclined surfaces are arranged accordingly. The lower wall of the drive groove (121) is composed of a lower inclined surface and a lower plane. The lower plane is arranged vertically and multiple planes are arranged in an array along the circumferential direction of the connecting shaft (115). Adjacent lower planes are connected by the lower inclined surface and the lower inclined surface is arranged at an angle to the upper inclined surface. The upper plane is located above the lower inclined plane, the lower plane is located below the upper inclined plane, and the end of the protruding pin (120) is located in the drive groove (121); Multiple drive shafts (119) are provided corresponding to the auger (113). All drive shafts (119) are connected to each other through the upper connecting plate (128), and the drive shaft (119) and the upper connecting plate (128) are movably connected. A guide rod (127) is connected to the lower surface of the upper connecting plate (128). The lower end of the guide rod (127) passes through the clearance hole provided on the lower connecting plate (122) and extends out of the preparation tank (101). A support (126) is provided thereon. A vibrator (125) is provided on the support (126). A spring (129) is sleeved on the outside of the guide rod (127) between the upper connecting plate (128) and the lower connecting plate (122).

10. The method for a green methanol preparation apparatus as described in claim 9, characterized in that, Includes the following steps: Step 1: The syngas feedstock for methanol preparation enters the preparation pipeline (112) through the open inlet valve and the upper fixed hole, and comes into contact with the copper-based catalyst. At the same time, the screw conveyor (113) is rotated by the second drive component. The two work together to produce crude methanol gas. Step 2: Crude methanol gas is output through exhaust pipe (106) and exhaust valve (107).

Images