A fixed bed reaction device for chemical products

Abstract

The present invention relates to the technical field of fixed bed reaction devices, and specifically discloses a fixed bed reaction device for chemical products, comprising: a tower body, a feed pipe, a discharge pipe and a driving mechanism, and also comprising a reaction module, an upper closed component, a lower closed component, and a transmission module. The driving mechanism can drive the upper closed component and the lower closed component to open and close the reaction module. The reaction module comprises a supporting cylinder coaxially rotating in the tower body, and four partition plates evenly distributed in the supporting cylinder and arranged along its radial direction. The beneficial effects of the present invention are as follows: the raw materials move along four chambers for one circle, and the raw materials are fed alternately from the top and the bottom of each chamber in turn, so that the catalysts in the four chambers can react with the raw materials. The supporting cylinder can rotate, and the chamber into which the raw materials enter for the first time can be continuously replaced, and all chambers can be used as the first chamber into which the raw materials enter, so that the catalysts in all chambers can fully react with the raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of fixed bed reaction devices, and in particular to a fixed bed reaction device for chemical products. Background Art

[0002] Fixed bed reactor refers to a reactor filled with granular solid catalysts or solid reactants to form a stacked bed layer of a certain height. Gas or liquid materials flow through the static fixed bed layer through the gaps between particles, realizing a heterogeneous reaction process. The characteristic of this type of reactor is that the solid particles filled in the equipment are fixed, which is different from the moving bed and fluidized bed in which the solid materials move in the equipment. It is also called a packed bed reactor. Fixed bed reactors are widely used in gas-solid phase reaction and liquid-solid phase reaction processes, for example, fixed semi-water gas generators in the synthetic ammonia industry, fixed bed ion exchange columns in water treatment, etc. Trickle bed reactors can also be classified as fixed bed reactors. The gas and liquid phases flow downward through the bed layer in parallel, forming gas-liquid-solid contact.

[0003] The Chinese patent with the authorization announcement number CN113769663B discloses a fixed bed reaction device, a synthesis system and a synthesis method for methylamine synthesis. The fixed bed reaction device includes a tower body, a plurality of catalyst layers and a plurality of feed pipes. The plurality of catalyst layers are respectively arranged on cross sections of different heights of the tower body; the plurality of feed pipes are arranged parallel to the axial direction of the tower body and are evenly distributed along the cross section of the tower body; the feed end of the feed pipe is arranged near the bottom of the tower body, and the discharge end is arranged near the top of the tower body; the synthesis gas outlet of the tower body is located at the lower end of the tower body. The feed pipe can make fuller use of the reaction heat to heat the raw gas, and the temperature of the raw gas is increased by heat exchange. Since the synthesis reaction of methylamine needs to be carried out at a certain temperature and pressure, after the temperature of the raw gas is increased, the reaction can be fully catalyzed in the uppermost section of the filler, which can improve the utilization rate of the catalyst in the synthetic fixed bed reaction device.

[0004] Existing fixed bed reactors generally adopt the upper feeding and lower discharging method. Most of the materials will react with the catalyst in the upper layer first, resulting in a large loss of the upper catalyst and incomplete utilization of the lower catalyst. However, when replacing the catalyst, all of them need to be replaced, resulting in a waste of catalyst. Summary of the invention

[0005] The present invention provides a fixed bed reaction device for chemical products, aiming to solve the technical problem that the fixed bed reactor in the related art generally adopts the upper feeding and lower discharging method, most of the materials will react with the catalyst in the upper layer first, resulting in a large loss of the upper catalyst and incomplete utilization of the lower catalyst, but all the catalysts need to be replaced when replacing, resulting in waste of catalysts.

[0006] A fixed bed reaction device for chemical products of the present invention comprises: a tower body, a feed pipe, a discharge pipe and a driving mechanism, and also comprises a reaction module, an upper closing component, a lower closing component and a transmission module. The driving mechanism can drive the upper closing component and the lower closing component to open and close the reaction module. The reaction module comprises a bearing cylinder coaxially rotating in the tower body, four partition plates uniformly distributed in the bearing cylinder and arranged along its radial direction, and four chambers for carrying catalysts are formed in the bearing cylinder. The upper closing component comprises an upper cover that can be raised and lowered and sealed and installed on the bearing cylinder, an upper sealing plate arranged along the radial direction of the upper cover, and a separator arranged along the radial direction of the upper cover. And an isolation plate perpendicular to the upper sealing plate, a chamber on one side of the isolation plate is connected to the feed pipe, and a chamber on the other side is connected to the discharge pipe, the lower closing assembly includes a bottom cover that can be raised and lowered and sealed and installed at the bottom of the bearing cylinder, a lower sealing plate radially arranged along the upper cover, the lower sealing plate and the upper sealing plate are perpendicular to each other, the transmission module includes a driving groove arranged on the outer wall of the bottom cover, a block that is slidably fitted to the bottom cover through a spring and has inclined surfaces on the upper and lower sides, and a driving column that rotates on the bearing cylinder, the driving groove has multiple inclined sections and vertical sections, the vertical section connects adjacent inclined sections end to end, the block is located in the vertical section, and the bottom inclined surface is consistent with the inclination direction of the inclined section.

[0007] Beneficial effects: The carrier cylinder is divided into multiple chambers for carrying catalysts, and two adjacent chambers are alternately connected up and down, so that the raw materials move along the four chambers for one circle, and the raw materials are alternately fed from the top and bottom of each chamber, so that the catalysts in the four chambers can react with the raw materials. At the same time, the carrier cylinder can rotate, and the chamber where the raw materials enter for the first time can be continuously replaced, so that all chambers can be used as the first chambers where the raw materials enter, and in this cycle, the catalysts in all chambers can fully react with the raw materials.

[0008] Preferably, the tower body is slidably fitted with an upper slide plate and a lower slide plate which are spaced apart from each other. The upper slide plate is fixedly connected to the upper cover, and the lower slide plate is fixedly connected to the bottom cover. An upper rack is fixedly mounted on the upper slide plate, and a lower rack is fixedly mounted on the lower slide plate. A gear driven by a motor is rotatably mounted on the tower body, and the gear is meshed with the upper rack and the lower rack at the same time.

[0009] The effect is that the upper cover and the bottom cover can be driven to open or close the carrying tube.

[0010] Preferably, the clamping block is horizontally slidably matched with the bottom cover and is arranged radially along the bottom cover, and the bottom surface of the clamping block is flush with the upper surface of the inclined section.

[0011] The effect is that the block can prevent the driving column from moving upward directly along the vertical section of the driving slot when the bottom cover just starts to move downward. The bottom surface of the block is an inclined surface, which can force the driving column to enter the inclined section of the driving slot.

[0012] Preferably, a fixed tube coaxially arranged with the supporting tube is fixedly installed on the partition plate, an upper mounting tube is arranged at the center position of the upper sealing plate, a lower mounting tube is arranged at the center position of the lower sealing plate, a feed pipe passes through the upper mounting tube and the fixed tube and the upper end extends into the upper mounting tube, and a feed port is opened on the upper mounting tube.

[0013] The effect is that the feed pipe extends into the fixed pipe, and the heat generated by the reaction is transferred to the feed pipe through the fixed pipe, so that the raw materials in the feed pipe can be preheated, thereby preventing the raw materials that have not been preheated from directly contacting the high-temperature catalyst and causing the catalyst to deactivate quickly.

[0014] Preferably, a discharge pipe is provided on the bottom cover, and an arc-shaped discharge port is opened on the discharge pipe, an inner tube is slidably installed up and down inside the discharge pipe, an arc-shaped inner hole is opened near the upper position of the inner tube, an adjustment ring is rotatably installed on the outer wall of the inner tube, a lever is fixedly installed on the adjustment ring, and an L-shaped adjustment hole is opened on the discharge pipe.

[0015] The effect is that when the raw material is liquid, during the process of opening the bottom cover, since the discharge pipe is arranged at the top, liquid will remain in the supporting tube, which will cause liquid leakage, and the residual liquid inside can be discharged through the discharge port and the inner hole.

[0016] Preferably, four driving grooves are provided, and each of them corresponds to a chamber carrying a catalyst.

[0017] Preferably, the discharge pipe is fixedly installed on the top of the tower body, and the discharge pipe is sealingly slidably matched with the upper cover.

[0018] Preferably, the bottom of the supporting tube is symmetrically provided with side plates front and back, the driving column is installed on the side plates, and the driving column is located in the driving groove.

[0019] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the supporting tube is divided into a plurality of chambers for carrying catalysts, and two adjacent chambers are alternately connected up and down, so that the raw materials move along the four chambers for one circle, and the raw materials are fed alternately from the top and bottom of each chamber in turn, so that the catalysts in the four chambers can react with the raw materials. At the same time, the supporting tube can rotate, and the chamber that the raw materials enter for the first time can be continuously replaced, so that all chambers can be used as the first chambers that the raw materials enter, so that the cycle allows the catalysts in all chambers to fully react with the raw materials. At the same time, the feed pipe extends into the fixed pipe, and the heat generated by the reaction is transferred to the feed pipe through the fixed pipe, so that the raw materials in the feed pipe can be preheated. It is prevented that the raw materials that have not been preheated directly contact the high-temperature catalyst, causing the catalyst to deactivate quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of the present invention.

[0021] Figure 2 It is a cross-sectional view of the present invention.

[0022] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0023] Figure 4 It is a schematic structural diagram of the bearing tube of the present invention.

[0024] Figure 5 It is a schematic diagram of the exploded view of the carrying tube, the upper cover and the bottom cover of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the driving column of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the upper cover of the present invention.

[0027] Figure 8 It is an exploded schematic diagram of the bottom cover and the inner tube of the present invention.

[0028] Reference numerals:

[0029] 10. Tower body; 11. Drive chamber; 12. Feed pipe; 20. Bearing tube; 21. Fixed tube; 22. Partition plate; 23. Side plate; 24. Drive column; 30. Upper cover; 31. Discharge pipe; 32. Upper mounting tube; 33. Feed port; 34. Upper sealing plate; 35. Isolation plate; 40. Bottom cover; 41. Lower mounting tube; 42. Lower sealing plate; 43. Drive groove; 44. Block; 50. Upper slide plate; 51. Upper rack; 52. Lower slide plate; 53. Lower rack; 54. Gear; 60. Discharge pipe; 61. Discharge port; 62. Adjustment hole; 63. Inner tube; 64. Inner hole; 65. Adjustment ring; 66. Push rod. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0031] like Figures 1 to 8 As shown, a specific embodiment of a fixed bed reaction device for chemical products of the present invention includes a tower body 10, a reaction module, an upper closed component, a lower closed component, a transmission module, a discharge module and a driving mechanism.

[0032] like Figure 2 A feed pipe 12 is fixedly installed at the bottom of the tower body 10, and a discharge pipe 31 is fixedly installed at the top of the tower body 10.

[0033] like Figure 2 , Figure 4 , Figure 5and Figure 6 The reaction module includes a supporting tube 20 rotatably installed in the tower body 10. The supporting tube 20 is an upper and lower opening structure. A fixed tube 21 is coaxially arranged at the center position of the supporting tube 20. Four partition plates 22 are evenly arranged on the outer wall of the fixed tube 21 along its circumference. One end of the partition plate 22 is fixedly connected to the fixed tube 21, and the other end is fixedly connected to the inner wall of the supporting tube 20, thereby dividing the inner side of the supporting tube 20 into four chambers, and the four chambers are loaded with catalysts.

[0034] The raw materials are generally gas or liquid. The reaction between the catalyst and the raw materials is an exothermic reaction, so a large amount of heat is generated. In addition, the raw materials that have not been preheated directly contact the high-temperature catalyst, which will cause the catalyst to deactivate quickly. In this embodiment, the feed pipe 12 extends into the fixed pipe 21 and rotates with the fixed pipe 21. The heat generated by the reaction is transferred to the feed pipe 12 through the fixed pipe 21, so that the raw materials in the feed pipe 12 can be preheated.

[0035] like Figure 7 The upper sealing assembly includes an upper cover 30 which can be lifted and lowered at the opening above the carrier tube 20. An upper sealing plate 34 is radially fixedly installed on the inner side of the upper cover 30. An upper mounting tube 32 is arranged at the center of the upper sealing plate 34. The upper mounting tube 32 is coaxially arranged with the upper cover 30.

[0036] An isolation plate 35 is fixedly installed on the outer peripheral wall of the upper mounting tube 32, and the isolation plate 35 is vertically arranged with the upper sealing plate 34. When the upper cover 30 is covered on the supporting tube 20, the upper mounting tube 32 is docked with the fixed tube 21, and the two are sealed together. The upper sealing plate 34 and the isolation plate 35 are respectively in contact with the corresponding partition plate 22, and the upper sealing plate 34 and the isolation plate 35 are both sealed together with the partition plate 22.

[0037] The upper end of the feed pipe 12 extends to above the fixed tube 21. When the upper cover 30 is covered on the supporting tube 20, the upper end of the feed pipe 12 will be located in the upper mounting tube 32. A feed port 33 is provided on the upper mounting tube 32. The feed port 33 is located between the isolation plate 35 and the upper sealing plate 34. Therefore, when the raw material enters the feed pipe 12, it finally enters the upper mounting tube 32, and then enters the catalyst from above through the feed port 33.

[0038] A discharge hole is provided at the top of the chamber between the isolation plate 35 and the sealing plate 34 on the other side, and the discharge hole is in sealing and sliding cooperation with the discharge pipe 31 .

[0039] like Figure 5The lower sealing assembly includes a bottom cover 40 which can be lifted and lowered and installed at the bottom opening of the bearing cylinder 20. A lower sealing plate 42 is fixedly installed on the bottom cover 40 along its radial direction. A lower mounting tube 41 is arranged at the center of the lower sealing plate 42. The lower mounting tube 41 is coaxially arranged with the bottom cover 40 and penetrates the bottom cover 40 vertically. The feed pipe 12 passes through the middle of the lower mounting tube 41 and is in sealing and sliding cooperation with the lower mounting tube 41.

[0040] When the bottom cover 40 is matched with the bottom of the carrying tube 20 , the lower sealing plate 42 abuts against the corresponding partition plate 22 , and the lower sealing plate 42 is sealed and matched with the partition plate 22 .

[0041] It is particularly noted that the lower sealing plate 42 and the upper sealing plate 34 are arranged perpendicular to each other.

[0042] Therefore, when the isolation plate 35 is not set, among the four chambers containing catalysts, two adjacent ones are connected in sequence, and the top connection and the bottom connection are alternately set. By setting the isolation plate 35, the chamber corresponding to the feed port 33 and the chamber corresponding to the discharge pipe 31 are completely closed, and the two chambers are not connected. The raw material can enter one of the chambers through the feed port 33, and after a circle of circulation, it is discharged from the top of the last chamber.

[0043] For example, the chamber corresponding to the feed port 33 is set as the first chamber, and the second chamber, the third chamber and the fourth chamber are arranged counterclockwise. After the raw material passes through the feed pipe 12 and the feed port 33, it enters the first chamber from the top, and then moves downward along the first chamber. The raw material first reacts with the catalyst in the first chamber. When the raw material moves to the bottom of the first chamber, it enters the bottom of the second chamber from the bottom, and then moves upward along the second chamber. After reaching the top of the second chamber, it enters the third chamber, and then moves downward along the third chamber. After reaching the bottom of the third chamber, it enters the fourth chamber, until it moves to the top of the fourth chamber. At this time, it is blocked by the isolation plate 35, and the raw material that has completed the reaction is discharged from the discharge pipe 31.

[0044] The raw materials are made to move along the four chambers for one circle, and the raw materials are fed alternately from the top and the bottom of each chamber in turn, so that the catalysts in the four chambers can react with the raw materials.

[0045] It is particularly noted that in other embodiments, the number of chambers in the carrier tube 20 may be 6, 8 or even more, and this embodiment is the optimal implementation.

[0046] The driving mechanism can synchronously drive the upper cover 30 and the bottom cover 40 to open and then close the upper and lower openings of the carrier tube 20 . During the opening process, the transmission module can drive the carrier tube 20 to rotate 90 degrees, thereby replacing the chamber corresponding to the feed port 33 .

[0047] like Figure 2 and Figure 4 The driving mechanism includes a driving chamber 11 arranged on one side of the tower body 10, the driving chamber 11 is connected to the tower body 10, and an upper slide plate 50 and a lower slide plate 52 are arranged in the driving chamber 11 at intervals. The upper slide plate 50 and the lower slide plate 52 are both slidably fitted in the driving chamber 11, the upper slide plate 50 is fixedly connected to the upper cover 30, and the lower slide plate 52 is fixedly connected to the bottom cover 40.

[0048] An upper rack 51 is fixedly mounted on the lower end of the upper slide 50, and a lower rack 53 is fixedly mounted on the upper end of the lower slide 52. A gear 54 driven by a motor is also rotatably mounted in the driving chamber 11, and the gear 54 is meshed with the upper rack 51 and the lower rack 53. When the motor drives the gear 54 to rotate, the upper slide 50 and the lower slide 52 can move toward each other through the upper rack 51 and the lower rack 53, that is, they are simultaneously close to or away from the gear 54. This drives the upper cover 30 and the bottom cover 40 to be opened and closed simultaneously.

[0049] like Figure 5 and Figure 6 The transmission module includes a driving groove 43 opened on the outer wall of the bottom cover 40. The driving groove 43 has multiple inclined sections and vertical sections. In this embodiment, the number of the inclined sections is 4, corresponding to the four chambers for loading catalysts, and the number of the vertical sections is also 4. The vertical section connects two adjacent inclined sections end to end, so that all the inclined sections are connected to the vertical sections.

[0050] like Figure 3 Each vertical section is provided with a block 44 near the lower end. The block 44 is horizontally slidably mounted on the bottom cover 40 through a spring, and the moving end of the block 44 is an inclined surface inclined upward, and the bottom surface of the block 44 is also an inclined surface, and the inclination direction is consistent with the inclined section. The bottom surface of the block 44 is flush with the upper surface of the inclined section.

[0051] The bottom of the supporting tube 20 is symmetrically provided with side plates 23 , and the inner side surfaces of the side plates 23 are rotatably mounted with driving posts 24 , and the driving posts 24 are located in the driving grooves 43 .

[0052] In the initial state, the driving column 24 is located at the end of the inclined section of the driving slot 43. When the bottom cover 40 moves downward to open, the driving column 24 is forced to move along the inclined section of the driving slot 43, so that the bearing cylinder 20 rotates. When the driving column 24 moves to the other end of the inclined section, the bearing cylinder 20 just rotates 90 degrees, that is, the position of a chamber, and then the bottom cover 40 is lifted upward. During the lifting process, the driving column 24 will move downward along the vertical section of the driving slot 43 until it passes through the block 44. The block 44 shrinks inward to ensure the passing of the driving column 24, and then the block 44 is reset. After passing through the block 44, the driving column 24 enters the end of the adjacent inclined section, and this cycle is repeated.

[0053] The setting of the block 44 can ensure that when the bottom cover 40 just starts to move downward, the driving column 24 is prevented from moving upward directly along the vertical section of the driving groove 43. The bottom surface of the block 44 is an inclined surface, which can force the driving column 24 to enter the inclined section of the driving groove 43.

[0054] The raw materials are fed alternately from the top and bottom of each chamber, but the raw materials will still react more with the catalysts in the first two chambers, and the catalysts in the last two chambers may still not be fully utilized, so after working for a period of time, the carrier cylinder 20 is rotated 90 degrees, and the chamber corresponding to the feed port 33 is replaced, that is, the chamber where the raw materials first enter is replaced. All chambers can be used as the first chambers for the raw materials to enter, so that the catalysts in all chambers can fully react with the raw materials.

[0055] When the raw material is liquid, during the process of opening the bottom cover 40, since the discharge pipe 31 is arranged at the top, liquid will remain in the supporting tube 20, which will cause the liquid to leak out, so a discharge module is required to discharge the residual liquid inside first.

[0056] like Figure 8 The discharge module includes a discharge pipe 60 installed on the bottom cover 40 , the upper end of the discharge pipe 60 extends to the lower sealing plate 42 , and arc-shaped discharge ports 61 are opened on both sides of the discharge pipe 60 , and the lower edge of the discharge port 61 is flush with the inner bottom of the bottom cover 40 .

[0057] An inner tube 63 is installed inside the discharge pipe 60 so as to slide up and down. Arc-shaped inner holes 64 are provided on both sides of the inner tube 63 near the top. When discharge is not required, the inner hole 64 is located above the discharge port 61, and the two are not connected. When discharge is required, the inner tube 63 slides downward, and the inner hole 64 is connected with the discharge port 61, and the raw material is discharged from the inner tube 63 after passing through the two holes.

[0058] An adjusting ring 65 is rotatably installed on the outer wall of the inner tube 63, and a lever 66 is fixedly installed on the adjusting ring 65. An L-shaped adjusting hole 62 is opened on the discharge pipe 60, and the lever 66 passes through the adjusting hole 62. When discharge is not required, the lever 66 is located in the horizontal part of the adjusting hole 62. When the inner tube 63 needs to slide downward, the lever 66 is pushed to one side and then pulled downward to make it enter the vertical part of the adjusting hole 62, thereby controlling the descent of the inner tube 63.

[0059] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A fixed bed reaction device for chemical products, comprising: A tower body (10), a feed pipe (12), a discharge pipe (31), and a drive mechanism; characterized in that it also includes a reaction module, an upper closing component, a lower closing component, and a transmission module, and the drive mechanism can drive the upper closing component and the lower closing component to open and close the reaction module; The reaction module comprises a supporting cylinder (20) coaxially rotating in a tower body (10), four partition plates (22) evenly distributed in the supporting cylinder (20) and arranged along its radial direction, and four chambers for supporting catalysts are formed in the supporting cylinder (20); The upper sealing assembly comprises an upper cover (30) which is installed on the bearing cylinder (20) in a liftable and sealing manner, an upper sealing plate (34) which is arranged radially along the upper cover (30), and an isolation plate (35) which is arranged radially along the upper cover (30) and is perpendicular to the upper sealing plate (34); a chamber on one side of the isolation plate (35) is in communication with the feed pipe (12), and a chamber on the other side is in communication with the discharge pipe (31); The lower sealing assembly comprises a bottom cover (40) which is installed in a lifting and sealing manner at the bottom of the bearing cylinder (20), and a lower sealing plate (42) which is arranged radially along the upper cover (30), wherein the lower sealing plate (42) and the upper sealing plate (34) are perpendicular to each other; The transmission module comprises a driving groove (43) provided on the outer wall of the bottom cover (40), a clamping block (44) which is slidably matched with the bottom cover (40) through a spring and has inclined surfaces at the top and bottom, and a driving column (24) which rotates on the supporting cylinder (20); the driving groove (43) has a plurality of inclined sections and vertical sections, the vertical sections connect adjacent inclined sections end to end, the clamping block (44) is located in the vertical section, and the bottom inclined surface has the same inclination direction as the inclined section.

2. A fixed bed reaction device for chemical products according to claim 1, characterized in that: An upper slide plate (50) and a lower slide plate (52) are slidably matched in the tower body (10) and are arranged at intervals in an upper and lower manner. The upper slide plate (50) is fixedly connected to the upper cover (30), and the lower slide plate (52) is fixedly connected to the bottom cover (40). An upper rack (51) is fixedly mounted on the upper slide plate (50), and a lower rack (53) is fixedly mounted on the lower slide plate (52). A gear (54) driven by a motor is rotatably mounted on the tower body (10), and the gear (54) is meshed with the upper rack (51) and the lower rack (53) at the same time.

3. A fixed bed reaction device for chemical products according to claim 1, characterized in that: The clamping block (44) is horizontally slidably matched with the bottom cover (40) and is arranged radially along the bottom cover (40); the bottom surface of the clamping block (44) is flush with the upper surface of the inclined section.

4. A fixed bed reaction device for chemical products according to claim 1, characterized in that: A fixed tube (21) coaxially arranged with the supporting tube (20) is fixedly mounted on the partition plate (22); an upper mounting tube (32) is arranged at the center of the upper sealing plate (34); a lower mounting tube (41) is arranged at the center of the lower sealing plate (42); a feed tube (12) passes through the upper mounting tube (32) and the fixed tube (21) and its upper end extends into the upper mounting tube (32); and a feed port (33) is provided on the upper mounting tube (32).

5. A fixed bed reaction device for chemical products according to claim 1, characterized in that: The bottom cover (40) is provided with a discharge pipe (60), and an arc-shaped discharge port (61) is provided on the discharge pipe (60). An inner pipe (63) is slidably mounted inside the discharge pipe (60) up and down, and an arc-shaped inner hole (64) is provided near the upper part of the inner pipe (63). An adjustment ring (65) is rotatably mounted on the outer wall of the inner pipe (63), and a lever (66) is fixedly mounted on the adjustment ring (65). An L-shaped adjustment hole (62) is provided on the discharge pipe (60).

6. A fixed bed reaction device for chemical products according to claim 1, characterized in that: Four driving grooves (43) are provided, and correspond to the chambers carrying the catalyst respectively.

7. A fixed bed reaction device for chemical products according to any one of claims 1 to 6, characterized in that: The discharge pipe (31) is fixedly mounted on the top of the tower body (10), and the discharge pipe (31) is in sealing and sliding cooperation with the upper cover (30).

8. A fixed bed reaction device for chemical products according to claim 7, characterized in that: The bottom of the bearing cylinder (20) is symmetrically provided with side plates (23) at the front and rear ends, and the driving column (24) is mounted on the side plates (23), and the driving column (24) is located in the driving groove (43).

Images