A methylation reaction system and method with catalysts that can be replaced conveniently

Abstract

The application discloses a methylation reaction system and method with replaceable catalysts, which comprises an upper cylinder, a material cylinder mechanism and a lower cylinder, wherein the upper cylinder, the material cylinder mechanism and the lower cylinder are connected in sequence, the bottom of the material cylinder mechanism is provided with a material blocking mechanism, the upper cylinder and the material cylinder mechanism are both provided with limiting frames, and the lower cylinder is provided with external frames for fixing the limiting frames. The application overcomes the defects of the prior art, has reasonable design, compact structure, replaceable catalysts, effectively shortened catalyst replacement time, no wear of the cylinder during replacement, no damage to the sealing property of the cylinder, and high social use value and application prospect.

Description

Technical Field

[0001] This invention relates to the field of methylation reactor technology, and in particular to a methylation reaction system and method with easily replaceable catalysts. Background Technology

[0002] Methylation is a reaction in which hydrogen in an organic compound molecule is replaced by a methyl group. In existing reaction equipment, fixed-bed reactors and straight-tube reactors are mostly used. Sufficient preheating treatment is required at the top of the reaction equipment to ensure contact with the catalyst and avoid uneven heating of the material, which could lead to catalyst deactivation.

[0003] Existing conventional pipeline reactors are prone to uneven heating during the feeding process, resulting in poor reaction efficiency and catalyst deactivation. In practical applications, an electric heating automatic control system is added to regulate this process.

[0004] In existing reactors, the effectiveness of the catalyst gradually decreases during use. When replacing the catalyst, the disassembly of the reaction section pipeline is quite complicated, which directly prevents the reactor from being quickly put back into production, thus significantly impacting production efficiency.

[0005] Furthermore, replacing the existing catalyst requires disassembling the entire reaction section and then spending a considerable amount of time cleaning its interior before the new catalyst can be installed, resulting in long downtime and directly impacting production efficiency.

[0006] Therefore, the inventors designed and developed a methylation reaction system that can be installed and disassembled in a replaceable manner, which allows for convenient replacement of the catalyst required for the methylation reaction, saving the time required for catalyst replacement. Summary of the Invention

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A methylation reaction system with easily replaceable catalyst includes an upper cylinder, a material cylinder mechanism, and a lower cylinder, which are sequentially connected. The bottom of the material cylinder mechanism is provided with a material blocking mechanism, and both the upper cylinder and the material cylinder mechanism are provided with limiting frames. The lower cylinder is provided with external frames on both sides for fixing the limiting frames.

[0009] Preferably, the feed cylinder mechanism includes a first feed cylinder filled with catalyst and a second feed cylinder for replacing the first feed cylinder, wherein the first feed cylinder is provided with a balance plate for connecting the second feed cylinder;

[0010] The balance plate is provided with a height guide frame, a clamping plate, and a wheel groove on the height guide frame.

[0011] Preferably, the outer frame includes a pad frame, with end supports at both ends of the pad frame and a central support in the middle of the pad frame for fixing the limiting frame;

[0012] The end support is provided with a drive mechanism and a guide frame;

[0013] The guide frame is provided with a placement slot.

[0014] Preferably, the driving mechanism includes a lead screw, with right-angle brackets connected to end supports at both ends of the lead screw and bearing sleeves. A drive motor for driving the lead screw to rotate is provided on the right-angle brackets, and a slider assembly connected to the outer wall of the material cylinder mechanism is provided on the lead screw.

[0015] Preferably, the slider assembly includes a first slider fixed to both sides of the outer wall of the first barrel and a second slider fixed to both sides of the outer wall of the second barrel.

[0016] Preferably, mounting frames are provided on both sides of the outer wall of the upper cylinder and the material cylinder mechanism, and the mounting frames are provided with a displacement mechanism embedded in the wheel groove;

[0017] The displacement mechanism includes a support plate connected to the mounting frame. Both ends of the support plate are provided with support columns, and a support cylinder is sleeved on the support column. The other end of the support cylinder is provided with a roller located on the wheel groove.

[0018] Preferably, the end of the support column is provided with a pad located inside the support cylinder, and the other side of the pad is connected to a return spring fixed to the inner wall of the support cylinder.

[0019] Preferably, the bottom of both the first and second material cylinders is provided with a discharge port and a storage inclined plate, and the straight edge of the discharge port is hinged to the material blocking mechanism;

[0020] The material blocking mechanism includes a material blocking plate hinged to the straight edge of the discharge port, and a gearbox installed at the bottom of the material cylinder mechanism. The gearbox is equipped with a locking motor that drives the internal gears of the gearbox to rotate. The bottom of the material cylinder mechanism is equipped with a rack tooth that meshes with the gears inside the gearbox. The material blocking plate is equipped with a transverse frame, and the bottom of the material cylinder mechanism is equipped with a buckle that provides a limit for the rack tooth.

[0021] A method for operating a methylation reaction system with readily replaceable catalysts includes the following steps:

[0022] S1: The catalyst is pre-filled. After the first cylinder (201) is connected to the upper cylinder (1) and the lower cylinder (3), the catalyst inside the first cylinder (201) can be filled into the second cylinder (202) before the catalyst inside the first cylinder (201) loses its function. After the catalyst inside the first cylinder (201) loses its function, the sealing bolts between the upper cylinder (1) and the lower cylinder (3) and the first cylinder (201) can be removed and the first cylinder (201) can be disassembled.

[0023] S2: Replace the catalyst. After all the sealing bolts between the first cylinder (201) and the upper cylinder (1) and the lower cylinder (3) are removed, the two synchronously rotating drive motors (603) can be turned on to make the lead screw (601) rotate, so that the slider group (604) located on both sides of the first cylinder (201) and the second cylinder (202) can move in the same direction, so that the second cylinder (202) filled with new catalyst moves between the upper cylinder (1) and the lower cylinder (3), and then the sealing bolts seal the connection between the second cylinder (202) and the upper cylinder (1) and the lower cylinder (3).

[0024] S3: Collect and discharge the spent catalyst. Separate the connection between the first cylinder (201) and the upper cylinder (1) and lower cylinder (3). Move the box or trolley for collecting spent catalyst to the bottom of the first cylinder (201). Open the baffle mechanism (9) so that the baffle mechanism (9) can release the obstruction of the catalyst, so that the spent catalyst in the first cylinder (201) can fall into the box or trolley. Then close the baffle mechanism (9) so that the bottom of the first cylinder (201) is closed. Add new catalyst so that the newly filled catalyst will not fall from the bottom of the first cylinder (201).

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. Using an external frame for the erection of the upper cylinder, the material cylinder mechanism, and the lower cylinder can effectively improve the installation and disassembly efficiency of the upper cylinder, the material cylinder mechanism, and the lower cylinder.

[0027] 2. By utilizing the drive mechanism and guide frame to perform translational operations on the material cylinder mechanism, the first and second material cylinders can be easily replaced, facilitating the replacement operation.

[0028] 3. The replacement setting of the first and second material cylinders allows the catalyst to be pre-filled inside the second material cylinder before the catalyst needs to be replaced in the first material cylinder, saving the time consumed by catalyst filling after disassembly;

[0029] 4. The baffle mechanism enables the replacement of the first or second material cylinder to perform rapid discharge and loading operations, saving time for discharging the failed catalyst.

[0030] 5. During the replacement process, the translation of the barrel mechanism can rely on the height guide frame and the displacement mechanism to raise the height of the upper barrel and lower the height of the lower barrel, so that the sealing contact ends of the upper barrel, the barrel mechanism and the lower barrel do not generate strong friction.

[0031] 6. By setting up the storage inclined plate and the discharge port, the catalyst can be conveniently discharged through the inclined angle of the storage inclined plate when the material blocking mechanism releases its support for the catalyst.

[0032] In summary, this invention overcomes the shortcomings of the prior art by providing a replaceable catalyst installation, which effectively shortens the catalyst replacement time and does not cause wear to the cylinder during replacement, thus avoiding damage to the sealing of its connection. It has high social value and application prospects. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the external frame structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the upper cylinder structure in this invention;

[0037] Figure 4 This is a schematic diagram of the material cylinder mechanism in this invention;

[0038] Figure 5 This is a schematic diagram of the lower cylinder structure in this invention;

[0039] Figure 6 This is a top view of the upper cylinder structure in this invention;

[0040] Figure 7 For this Figure 6 A schematic diagram of the structural plan section at point AA;

[0041] Figure 8 For this Figure 7 Enlarged view of the local structure at point B;

[0042] Figure 9 This is a schematic diagram of the drive mechanism in this invention;

[0043] Figure 10 This is a schematic diagram of the guide frame structure in this invention;

[0044] Figure 11 This is a schematic diagram of the limiting frame in this invention;

[0045] Figure 12 This is a schematic diagram of the material blocking mechanism in this invention;

[0046] Figure 13 This is a schematic diagram of the bottom structure of the inner cavity of the barrel mechanism in this invention;

[0047] Figure 14 This is a schematic diagram of the bottom structure of the barrel mechanism in this invention;

[0048] Figure 15 This is a schematic diagram of the baffle plate in this invention.

[0049] In the diagram: 1. Upper cylinder; 11. Mounting frame; 2. Material cylinder mechanism; 201. First material cylinder; 202. Second material cylinder; 203. Discharge port; 204. Storage inclined plate; 21. Balance plate; 211. Height guide frame; 2111. Wheel groove; 212. Clamping plate; 3. Lower cylinder; 4. Limiting frame; 5. External frame; 51. Pad frame; 52. End support column; 53. Central support column; 6. Drive mechanism; 601. Lead screw; 602. Right angle frame 603. Drive motor; 604. Slider assembly; 6041. First slider; 6042. Second slider; 7. Guide frame; 71. Placement slot; 8. Shifting mechanism; 801. Support plate; 802. Support column; 803. Support cylinder; 804. Pad; 805. Return spring; 806. Roller; 9. Material blocking mechanism; 91. Material blocking plate; 92. Gearbox; 93. Locking motor; 94. Horizontal moving frame; 95. Toothed bar; 96. Buckle. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1

[0052] Reference Figure 1-15A methylation reaction system with a conveniently replaceable catalyst includes an upper cylinder 1, a material cylinder mechanism 2, and a lower cylinder 3. The upper cylinder 1 is responsible for filling the packing material inside. Both 1 and 2 are equipped with independent electric heating systems and adopt DCS electric heating for automatic temperature control. The upper cylinder 1, the material cylinder mechanism 2, and the lower cylinder 3 are sequentially connected. The bottom of the material cylinder mechanism 2 is equipped with a material blocking mechanism 9. The upper cylinder 1 and the material cylinder mechanism 2 are both equipped with limiting frames 4. The lower cylinder 3 is equipped with external frames 5 on both sides for fixing the limiting frames 4.

[0053] Specifically, the cylinder mechanism 2 includes a first cylinder 201 filled with catalyst and a second cylinder 202 for replacing the first cylinder 201. The first cylinder 201 is provided with a balance plate 21 for connecting the second cylinder 202.

[0054] The balance plate 21 is provided with a height guide frame 211 and a clamping plate 212. The height guide frame 211 is provided with a wheel groove 2111. The first material cylinder 201 and the second material cylinder 202 can be interchanged, which facilitates the discharge and filling of the catalyst, saves the time required for catalyst replacement, and improves the efficiency of actual production.

[0055] Specifically, the outer frame 5 includes a pad frame 51, with end supports 52 at both ends of the pad frame 51, and a central support 53 in the middle of the pad frame 51 for fixing the limiting frame 4;

[0056] A drive mechanism 6 is provided on the end support 52, and a guide frame 7 is provided on the end support 52;

[0057] The guide frame 7 is provided with a placement slot 71, the end support column 52 provides support for the drive mechanism 6 and the guide frame 7, and indirectly provides overall support for the material cylinder mechanism 2. The central support column 53 provides support for the upper cylinder 1 and the lower cylinder 3, so that the overall device will not deviate in position during operation.

[0058] Specifically, the drive mechanism 6 includes a lead screw 601, with right-angle brackets 602 connected to the end support column 52 at both ends of the lead screw 601 bearing sleeves. The right-angle brackets 602 are equipped with a drive motor 603 for driving the lead screw 601 to rotate. The lead screw 601 is equipped with a slider group 604 connected to the outer wall of the material cylinder mechanism 2. The drive mechanism 6 provides power input for the lateral movement of the first material cylinder 201 and the second material cylinder 202, allowing the first material cylinder 201 and the second material cylinder 202 to be interchanged.

[0059] Specifically, the slider assembly 604 includes a first slider 6041 fixed to both sides of the outer wall of the first material cylinder 201, and a second slider 6042 fixed to both sides of the outer wall of the second material cylinder 202.

[0060] Specifically, mounting brackets 11 are provided on both sides of the outer wall of the upper cylinder 1 and the material cylinder mechanism 2, and the mounting brackets 11 are provided with a shifting mechanism 8 embedded in the wheel groove 2111;

[0061] The shifting mechanism 8 includes a support plate 801 connected to the mounting frame 11. Both ends of the support plate 801 are provided with support columns 802. A support cylinder 803 is sleeved on the support column 802. The other end of the support cylinder 803 is provided with a roller 806 located on the wheel groove 2111. When the upper cylinder 1 and the lower cylinder 3 are bolted together with the material cylinder mechanism 2, the return spring 805 will be elastically deformed, so that the upper cylinder 1, the material cylinder mechanism 2 and the lower cylinder 3 can be tightly fitted together.

[0062] Specifically, the end of the support column 802 is provided with a pad 804 located inside the support cylinder 803. The other side of the pad 804 is connected to a return spring 805 fixed to the inner wall of the support cylinder 803. The relative displacement between the material cylinder mechanism 2 and the upper cylinder 1 and the lower cylinder 3 caused by the translation of the material cylinder mechanism 2 causes the height of the wheel groove 2111 to change the height of the upper cylinder 1 and the lower cylinder 3. The height of the upper cylinder 1 located above the material cylinder mechanism 2 will rise, and the height of the lower cylinder 3 located below the material cylinder mechanism 2 will decrease, so that the material cylinder mechanism 2 will not have severe friction with its contact end during the transverse movement process.

[0063] Specifically, the bottom of the first material cylinder 201 and the second material cylinder 202 are both provided with a discharge port 203 and a storage inclined plate 204, and the straight edge of the discharge port 203 is hinged to the material blocking mechanism 9.

[0064] The material blocking mechanism 9 includes a material blocking plate 91 hinged to the straight edge of the discharge port 203, and a gearbox 92 installed at the bottom of the material cylinder mechanism 2. The gearbox 92 is equipped with a locking motor 93 that drives the internal gears of the gearbox 92 to rotate. The bottom of the material cylinder mechanism 2 is equipped with a rack tooth 95 that meshes with the internal gears of the gearbox 92. The material blocking plate 91 is equipped with a transverse frame 94. The bottom of the material cylinder mechanism 2 is equipped with a retaining ring 96 that provides a limit for the rack tooth 95. The gear transmission inside the gearbox 92 can control the two rack teeth 95 to move in the same direction. The locking motor 93 provides the rotational power input for the gear set inside the gearbox 92. The retaining ring 96 provides support for the rack tooth 95. When the end of the rack tooth 95 is inserted into the transverse frame 94, the bottom surface of the material blocking plate 91 will be flush with the bottom surface of the material cylinder mechanism 2.

[0065] A method for operating a methylation reaction system with readily replaceable catalysts includes the following steps:

[0066] S1: The catalyst is pre-filled. After the first cylinder 201 is connected to the upper cylinder 1 and the lower cylinder 3, the catalyst inside the first cylinder 201 can be filled into the second cylinder 202 before the catalyst inside the first cylinder 201 loses its function. After the catalyst inside the first cylinder 201 loses its function, the sealing bolts between the upper cylinder 1 and the lower cylinder 3 and the first cylinder 201 can be removed, and the first cylinder 201 can be disassembled.

[0067] S2: Replace the catalyst. After all the sealing bolts between the first cylinder 201 and the upper cylinder 1 and the lower cylinder 3 are removed, the two synchronously rotating drive motors 603 can be turned on to rotate the lead screw 601. This allows the slider groups 604 located on both sides of the first cylinder 201 and the second cylinder 202 to move in the same direction, so that the second cylinder 202 filled with the new catalyst moves between the upper cylinder 1 and the lower cylinder 3. Then, the sealing bolts seal the connection between the second cylinder 202 and the upper cylinder 1 and the lower cylinder 3.

[0068] S3: Collect and discharge the spent catalyst. Separate the connection between the first cylinder 201 and the upper cylinder 1 and lower cylinder 3. Move the box or trolley for collecting spent catalyst to the bottom of the first cylinder 201. Activate the baffle mechanism 9 to release the obstruction of the catalyst, allowing the spent catalyst in the first cylinder 201 to fall into the box or trolley. Then close the baffle mechanism 9 to close the bottom of the first cylinder 201. Add new catalyst so that the newly filled catalyst does not fall from the bottom of the first cylinder 201.

[0069] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0072] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A methylation reaction system with readily replaceable catalyst, comprising an upper cylinder (1), a feed cylinder mechanism (2), and a lower cylinder (3), characterized in that: The upper cylinder (1), the material cylinder mechanism (2) and the lower cylinder (3) are sequentially connected. The bottom of the material cylinder mechanism (2) is provided with a material blocking mechanism (9). The upper cylinder (1) and the material cylinder mechanism (2) are both provided with a limiting frame (4). The lower cylinder (3) is provided with an external frame (5) on both sides for fixing the limiting frame (4). The cylinder mechanism (2) includes a first cylinder (201) filled with catalyst and a second cylinder (202) for replacing the first cylinder (201). The first cylinder (201) is provided with a balance plate (21) for connecting the second cylinder (202). The balance plate (21) is provided with a height guide frame (211), the balance plate (21) is provided with a clamping plate (212), and the height guide frame (211) is provided with a wheel groove (2111). The upper cylinder (1) and the material cylinder mechanism (2) are provided with mounting brackets (11) on both sides of the outer wall, and the mounting brackets (11) are provided with a shifting mechanism (8) embedded in the wheel groove (2111). The shifting mechanism (8) includes a support plate (801) connected to the mounting frame (11). Both ends of the support plate (801) are provided with support columns (802). A support cylinder (803) is sleeved on the support column (802). The other end of the support cylinder (803) is provided with a roller (806) located on the wheel groove (2111). The end of the support column (802) is provided with a pad (804) located inside the support cylinder (803), and the other side of the pad (804) is connected to a return spring (805) fixed to the inner wall of the support cylinder (803). The relative displacement between the barrel mechanism (2) and the upper cylinder (1) and the lower cylinder (3) caused by the translation of the barrel mechanism (2) causes the height of the wheel groove (2111) to change the height of the upper cylinder (1) and the lower cylinder (3). The height of the upper cylinder (1) located above the barrel mechanism (2) will rise, and the height of the lower cylinder (3) located below the barrel mechanism (2) will decrease, so that the barrel mechanism (2) will not have severe friction with its contact end during the transverse process.

2. The methylation reaction system with readily replaceable catalyst according to claim 1, characterized in that: The outer frame (5) includes a pad frame (51), both ends of which are provided with end supports (52), and the middle of the pad frame (51) is provided with a central support (53) for fixing the limiting frame (4). The end support (52) is provided with a drive mechanism (6) and a guide frame (7). The guide frame (7) is provided with a placement slot (71).

3. The methylation reaction system with readily replaceable catalyst according to claim 2, characterized in that: The driving mechanism (6) includes a lead screw (601), both ends of which are fitted with right-angle brackets (602) connected to the end support column (52). The right-angle brackets (602) are equipped with a drive motor (603) for driving the lead screw (601) to rotate. The lead screw (601) is equipped with a slider group (604) connected to the outer wall of the material cylinder mechanism (2).

4. The methylation reaction system with readily replaceable catalyst according to claim 3, characterized in that: The slider assembly (604) includes a first slider (6041) fixed to both sides of the outer wall of the first cylinder (201) and a second slider (6042) fixed to both sides of the outer wall of the second cylinder (202).

5. A methylation reaction method with readily replaceable catalyst, employing the methylation reaction system with readily replaceable catalyst as described in claim 4, characterized in that, Includes the following steps: S1: The catalyst is pre-filled. After the first cylinder (201) is connected to the upper cylinder (1) and the lower cylinder (3), the catalyst inside the first cylinder (201) is filled with catalyst before the catalyst inside the first cylinder (202) loses its function. After the catalyst inside the first cylinder (201) loses its function, the sealing bolts between the upper cylinder (1) and the lower cylinder (3) and the first cylinder (201) are removed, and the first cylinder (201) is disassembled. S2: Replace the catalyst. After all the sealing bolts between the first cylinder (201) and the upper cylinder (1) and the lower cylinder (3) are removed, turn on the two synchronously rotating drive motors (603) to make the lead screw (601) rotate so that the slider group (604) located on both sides of the first cylinder (201) and the second cylinder (202) can move in the same direction, so that the second cylinder (202) filled with new catalyst moves between the upper cylinder (1) and the lower cylinder (3), and then the sealing bolts seal the connection between the second cylinder (202) and the upper cylinder (1) and the lower cylinder (3). S3: Collect and discharge the spent catalyst. Separate the connection between the first cylinder (201) and the upper cylinder (1) and the lower cylinder (3). Move the box or trolley for collecting spent catalyst to the bottom of the first cylinder (201). Open the baffle mechanism (9) so that the baffle mechanism (9) can release the obstruction of the catalyst, so that the spent catalyst in the first cylinder (201) can fall into the box or trolley. Then close the baffle mechanism (9) so that the bottom of the first cylinder (201) is closed. Add new catalyst so that the newly filled catalyst will not fall from the bottom of the first cylinder (201).

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