Lateral flow catalyst bed structure
By introducing lateral flow design and adjustment components into the catalyst bed structure, the problems of temperature unevenness and catalyst accumulation in strong endothermic reactions are solved, the stability of reactant flow and the uniformity of catalyst are achieved, and the reaction efficiency is improved and selective.
Patent Information
- Application Number
- CN202411412838.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-01-17
AI Technical Summary
The existing catalyst bed structure has problems such as uneven reactant temperature, blockage of catalyst accumulation, low reaction efficiency and inner wall pollution in strong endothermic reactions, and lacks real-time temperature monitoring and regulation functions, resulting in unstable reactions and reduced selectivity.
A lateral flowing catalyst bed structure is designed, including a shell assembly, feeding assembly and adjustment assembly, which enhances heat transfer through thermal conduction columns and cutter inclined plates, uses expanded materials to monitor temperature, and the elastic plate adjusts the size of the cutter hole. Sealed the push plate and the moving plate to vibrate the catalyst to ensure stable reactant flow and catalyst clearance.
Improve the reaction accuracy and stability between reactants and catalysts, enhance the uniformity and cleanliness of the catalysts, ensure the uniformity and heat transfer efficiency of the reactant flow channels, improve the selectivity of intermediate products, and avoid catalyst blockage. and inner wall contamination.
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Figure CN119318919A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of chemical reaction equipment, and in particular relates to a lateral flow catalyst bed structure. Background Art
[0002] The reactor provides storage space for the catalyst and improves mass and heat transfer in the reaction chamber through the arrangement of heating methods and channel structures. Traditional fixed bed reactors use high-temperature feed, bed heat exchange, inter-bed feeding and other methods to add heat to or remove heat from the catalyst bed. However, this heat exchange method has a slow heat transfer rate and uneven temperature distribution, which reduces the reaction conversion rate and selectivity. When the traditional bed structure is applied to strong endothermic rapid reactions, the effective reaction area is only concentrated in the upper part of the bed. After the reactants contact the catalyst, they quickly absorb heat and cool down, and most of the loading area is not effectively utilized.
[0003] Chinese invention patent CN106475018B discloses a fixed bed reactor and a gas distributor thereof, wherein the gas distributor comprises a feed main pipe, a distribution ring pipe and a plurality of distribution branches, wherein the upper end of the feed main pipe is used to connect to the inlet pipe of the fixed bed reactor, the lower end of the feed main pipe is closed, and the wall of the feed main pipe is provided with a plurality of discharge ports spaced along its circumference; the fixed bed reactor has low reaction efficiency and poor reaction effect.
[0004] Chinese invention patent CN108854857B relates to the field of petrochemical equipment, and provides a flow-guiding support grid and a fluidized bed reactor for a reactor catalyst bed. The flow-guiding support grid is a double-layer cylindrical structure, including a radially arranged distribution tube, support bars, a contact tube, and a connecting ring plate at the end. The distribution tube is arranged parallel to the contact tube. The catalyst bed is difficult to operate and has low operating accuracy, and is not suitable for mass production.
[0005] Since the chemical reaction between the reactants and the catalyst is a strongly endothermic reaction, the temperature of the reactants will change rapidly inside the catalyst. If the temperature inside the reactor does not meet the catalytic reaction requirements of the reactants, the catalytic reaction of the reactants will change, thereby causing the reaction to stop. However, the prior art lacks the function of real-time monitoring and adjustment of the temperature of the reactants inside the reactor, thereby being unable to ensure the stable progress of the reaction. In addition, there is a lack of selectivity for the intermediate products of the catalytic strongly endothermic reaction process, which reduces the diversity of choices and is unable to meet actual production and processing needs.
[0006] At the same time, when the catalyst is inside the reactor for a long time, the catalyst is prone to accumulation and blockage, thereby reducing the fluidity of the reactants. In addition, when the catalyst or reactants circulate back and forth laterally inside the reactor, they are prone to impact and collide with the inner wall, thereby causing damage to the reactants or the catalyst.
[0007] When the reactants continuously circulate back and forth laterally inside the reactor and react with the catalyst, they tend to adhere to the inner wall of the reactor, which not only reduces the cleanliness of the inner wall of the reactor, but also affects subsequent reactions. Summary of the invention
[0008] In view of the above problems, the present invention provides a lateral flow catalyst bed structure.
[0009] To achieve the above object, the present invention provides the following technical solution: a lateral flow catalyst bed structure, comprising a shell assembly, a plurality of feeding assemblies are evenly and staggeredly arranged inside the shell assembly, a plurality of regulating assemblies are evenly arranged inside the shell assembly, and each of the regulating assemblies corresponds to the feeding assembly; The housing assembly comprises a shell, a reaction chamber is provided inside the shell, a catalyst is provided inside the reaction chamber, and a plurality of heat-conducting columns are provided through the reaction chamber; The feeding assembly comprises a plurality of material discharge inclined plates, the upper part of which is movably connected with a movable plate, the movable plate moves up and down to vibrate the catalyst, and a material discharge hole is formed in the area where the rear end of the material discharge inclined plate is not in contact with the inner wall of the reaction chamber; The adjustment component includes a plurality of inner grooves, the inner grooves are slidably connected to a sealing push plate in a sealing manner, a driven plate is provided on one side of the sealing push plate close to the reaction chamber through a connecting rod, and an elastic plate is provided on the other end of the driven plate, and the elastic plate moves and adjusts the opening size of the discharge hole.
[0010] The present invention monitors the temperature of the reactants inside the feed hole in real time through the expansion material, thereby improving the accuracy and stability of the reaction between the reactants and the catalyst, and when the elastic plate moves inside the feed hole and adjusts the opening area of the feed hole, the elastic plate drives multiple stirring rods to stir and improve the unblocking of the catalyst, and at the same time, the sealing push plate moves inside the inner groove and realizes the circulation of the gas inside the flow cavity, thereby driving the moving plate to vibrate up and down and unblock the catalyst, thereby improving the uniformity and cleanliness of the catalyst.
[0011] Preferably, the catalyst is located in the area formed by the inner wall of the reaction chamber, the outer surface of the heat-conducting column, the top of the movable plate and the bottom of the discharge inclined plate. A plurality of through holes are provided above and below the outer shell. The inner wall of the through hole and the outer surface of the heat-conducting column are sealed and connected to each other. The heat-conducting column introduces the heat required for the reaction into the reaction chamber. The catalyst and the reactants have a strong endothermic reaction. A plurality of intermediate material pipes are evenly provided on one side of the outer shell. An electromagnetic valve is provided inside the intermediate material pipe. The plurality of intermediate material pipes match the top of the discharge inclined plate at the corresponding position.
[0012] Preferably, a control component is provided on one side of the shell, a plurality of legs are evenly provided on the outer surface of the shell, a buffer pad is provided at the bottom of the legs, a feed pipe is provided on the top side of the shell, the bottom of the feed pipe is connected with the reaction chamber, a discharge pipe is provided on the bottom side of the shell, the top of the discharge pipe is connected with the reaction chamber, the positions of the feed pipe and the discharge pipe match the position of the discharge ramp, an upper slope is provided on the inner top of the reaction chamber, a lower slope is provided on the inner bottom of the reaction chamber, and the upper slope and the lower slope both correspond to the discharge ramp.
[0013] Preferably, the plurality of said material unloading inclined plates are staggered and equidistantly distributed, and the said material unloading inclined plates are obliquely arranged downward from the inner wall end of the reaction chamber to the other end, and a baffle is provided at the end of the said material unloading inclined plate, and the baffle forms a top groove with the inside of the reaction chamber, and a plurality of connecting springs are evenly provided on the top of the said material unloading inclined plate, and the top of the said connecting spring is fixedly connected to the bottom of the movable plate, and the outer surface of the said movable plate is sealingly and slidingly connected to the baffle and the inner wall of the reaction chamber, and the said movable plate moves upward and scrapes the inner wall of the reaction chamber, and the moving height value of the said movable plate is less than the height value of the baffle.
[0014] Preferably, a plurality of docking holes are evenly arranged inside the unloading inclined plate, and the inner walls of the docking holes match the outer surfaces of the heat-conducting columns. A plurality of matching holes are evenly arranged inside the movable plate, and the matching holes correspond to the docking holes. An elastic ring is arranged on the inner wall of the matching hole, and the inner wall of the elastic ring is sealingly and slidably connected to the outer surface of the heat-conducting column.
[0015] Preferably, an expansion cavity is formed between the sealing push plate on the side close to the reaction cavity and the inner wall of the inner groove, and an expansion material is provided inside the expansion cavity. The expansion material has the principle of thermal expansion and contraction, and the expansion material inside each expansion cavity detects the temperature value of the discharge hole at the corresponding position. The sealing push plate on the side close to the reaction cavity is evenly provided with multiple reset springs, and the other side of the reset spring is fixedly connected to the inner wall of the expansion cavity.
[0016] Preferably, a flow chamber is formed between the side of the sealing push plate away from the reaction chamber and the inner groove, and a flowing gas is arranged inside the flow chamber. A plurality of air holes are evenly arranged inside the outer shell, one end of the air hole is connected with the adjacent top groove, and the other end of the air hole is connected with the flow chamber. The movement of the sealing push plate changes the volume of the flow chamber, and the gas inside the flow chamber circulates along the air holes and the top groove.
[0017] Preferably, a connecting hole is provided on one side of the inner groove, and the other side of the connecting hole is connected to the reaction chamber. The outer surface of the connecting rod is sealingly and slidably connected to the inner wall of the connecting hole. A limiting groove is provided on the end of the connecting rod. A limiting block is provided on the side of the driven plate close to the connecting rod. The limiting groove is sealingly and slidably connected to the limiting block. The driven plate moves up, down, left and right inside the reaction chamber, and the height values of the limiting block and the driven plate are both smaller than the height value of the elastic plate.
[0018] Preferably, the elastic plate is elastic, and both sides of the elastic plate are sealingly and slidingly connected to the inner wall of the reaction chamber. The elastic plate corresponds to the discharge hole, and a plurality of stirring rods are evenly arranged on one side of the elastic plate close to the discharge inclined plate. The gaps between the plurality of stirring rods change with the deformation of the elastic plate. The top and bottom of the elastic plate are provided with wedge surfaces, and the wedge surfaces respectively match the bottom of the discharge inclined plate and the top of the movable plate.
[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a shell assembly, a feeding assembly and an adjusting assembly to cooperate with each other. The catalyst bed structure improves the flow path of the reactants, increases the disturbance in the reaction chamber, promotes the uniform distribution of the reactants, and increases the flow channel of the reactants, which is conducive to the full conversion of the reactants. The heat-conducting columns and the discharge inclined plates enhance heat conduction and can act as heat-conducting fins to strengthen the heat transfer between the catalysts and the wall of the reaction chamber, so that the temperature distribution in the reaction chamber is uniform, which promotes the reaction in the positive direction, effectively improves the selectivity of the intermediate products, and ensures the diversity of selection.
[0020] 2. The present invention sets the mutual cooperation of components such as the feed hole and the elastic plate. When the temperature at the feed hole in the catalyst bed structure changes, the position of the elastic plate is adjusted accordingly, thereby adjusting the opening area of the feed hole, further ensuring that the flow rate of the reactants remains stable, and avoiding the reaction from being unable to proceed accurately and efficiently due to too much or too little reactants.
[0021] 3. The present invention sets an elastic plate and a stirring plate and other components to cooperate with each other. In the catalyst bed structure, when the elastic plate moves laterally, the stirring rod can also stir the catalyst at the feed hole, and cooperate with the lateral vibration of the elastic plate on the catalyst, so as to further improve the flow and stability of the catalyst at the feed hole and ensure the flow stability of the reactants inside the catalyst.
[0022] 4. The present invention sets a sealing push plate and a moving plate to cooperate with each other. When the sealing push plate moves inside the inner tank, the flow of gas drives the moving plate to vibrate up and down, thereby vibrating and clearing the catalyst above the moving plate, avoiding long-term accumulation of the catalyst and clogging, thereby reducing the reaction effect of the catalyst and the reactant. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the three-dimensional explosion structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 for Figure 3 The enlarged schematic diagram of point B in the middle; Figure 6 It is a schematic diagram of the internal structure of the housing assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the feeding assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the regulating component of the present invention.
[0024] In the figure: 1. Shell assembly; 101. Shell; 102. Reaction chamber; 103. Leg; 104. Feed pipe; 105. Discharge pipe; 106. Heat-conducting column; 107. Upper slope; 108. Lower slope; 109. Through hole; 110. Intermediate material pipe; 2. Feeding assembly; 201. Discharge inclined plate; 202. Baffle; 203. Connecting spring; 204. Moving plate; 205. Top groove; 206. Docking hole; 2 07, matching hole; 208, elastic ring; 209, feeding hole; 3, adjustment component; 301, inner groove; 302, connecting hole; 303, sealing push plate; 304, connecting rod; 305, return spring; 306, limit groove; 307, limit block; 308, driven plate; 309, elastic plate; 310, stirring rod; 311, vent hole; 312, expansion chamber; 313, flow chamber; 314, wedge surface. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0026] like Figure 1-8As shown, a lateral flow catalyst bed structure is mainly used for catalytic strong endothermic reaction between reactants and catalysts, which includes a shell component 1, and a plurality of feeding components 2 are evenly and staggeredly arranged inside the shell component 1, and the feeding component 2 is obliquely arranged inside the shell component 1, so that the reactants continuously flow laterally above the feeding component 2 and have a strong endothermic reaction with the catalyst, and a plurality of regulating components 3 are evenly arranged inside the shell component 1, and each regulating component 3 corresponds to the feeding component 2. Since the reaction between the reactants and the catalyst is a strong endothermic reaction, and when the temperature of the reactants at a certain position changes, the feeding speed of the reactants at that position is adjusted by the regulating component 3, thereby ensuring that the catalytic reaction is carried out continuously and stably.
[0027] The housing assembly 1 includes a shell 101, a reaction chamber 102 is provided inside the shell 101, a catalyst is provided inside the reaction chamber 102, and the reactants circulate back and forth laterally inside the reaction chamber 102 and react with the catalyst, a plurality of heat-conducting columns 106 are provided inside the reaction chamber 102, and the heat-conducting columns 106 are vertically inserted into the reaction chamber 102, and a plurality of through holes 109 are provided above and below the shell 101, and the inner walls of the through holes 109 are sealed and connected to the outer surfaces of the heat-conducting columns 106, and the heat-conducting columns 106 are introduced into the reaction chamber 102. The heat required for the reaction, and the vertically arranged heat-conducting columns 106 ensure the reaction No matter where the reactants move to, the heat-conducting column 106 can provide the reactants with the heat required for the reaction. A plurality of intermediate material pipes 110 are evenly arranged on one side of the outer shell 101. A solenoid valve is arranged inside the intermediate material pipe 110. The plurality of intermediate material pipes 110 match the top of the corresponding position of the discharge inclined plate 201. When intermediate products of different stages are needed, it is only necessary to open the solenoid valve inside the intermediate material pipe 110 at the corresponding position. Then, the intermediate products in the catalytic strong endothermic reaction can reach the inside of the intermediate material pipe 110 along the side of the corresponding position of the discharge inclined plate 201 and be finally discharged, thereby effectively improving the selectivity of the intermediate products and ensuring the diversity of selection.
[0028] A control component is provided on one side of the shell 101, and the control component electrically controls each electrical component. A heat medium tube is surrounded by the outer surface of the shell 101, and the heat medium tube heats the reactants inside the reaction chamber 102, and cooperates with the heat conductive column 106 to further improve the heating efficiency and heating effect. A plurality of legs 103 are evenly provided on the outer surface of the shell 101, and a buffer pad is provided at the bottom of the leg 103. The setting of the buffer pad improves the supporting stability of the leg 103.
[0029] A feed pipe 104 is provided on one side of the top of the shell 101, and the bottom of the feed pipe 104 is connected to the reaction chamber 102, so that the reactants enter the reaction chamber 102 along the feed pipe 104 for catalytic reaction. A discharge pipe 105 is provided on one side of the bottom of the shell 101, and the top of the discharge pipe 105 is connected to the reaction chamber 102. After the reaction is completed, the reactants are discharged and recovered along the discharge pipe 105.
[0030] The feeding assembly 2 includes a plurality of discharge inclined plates 201, which are staggered and equidistantly distributed. The discharge inclined plates 201 are obliquely downwardly arranged from the inner wall end of the reaction chamber 102 to the other end. Therefore, the reactants entering the reaction chamber 102 along the feed pipe 104 move laterally reciprocatingly above the discharge inclined plates 201, and are finally discharged along the discharge pipe 105. A baffle 202 is provided at the end of the discharge inclined plates 201, and a top groove 205 is formed between the top of the discharge inclined plates 201, the side walls of the baffle 202 and the inner wall of the reaction chamber 102. The baffle 202 blocks and protects the end of the discharge inclined plates 201. A movable plate 204 is movably connected above the discharge inclined plates 201, so that the movable plate 204 can move up and down inside the top groove 205 and vibrate the catalyst, thereby avoiding the catalyst from accumulating for a long time inside the reaction chamber 102 and causing blockage.
[0031] The positions of the feed pipe 104 and the discharge pipe 105 are matched with the position of the discharge ramp 201. The inner top of the reaction chamber 102 is provided with an upper slope 107, and the inner bottom of the reaction chamber 102 is provided with a lower slope 108. The upper slope 107 and the lower slope 108 both correspond to the discharge ramp 201. The setting of the upper slope 107 and the lower slope 108 not only improves the lateral circulation of the reactants in the reaction chamber 102, but also further cooperates with the adjustment component 3 to improve the cleaning effect of the inside of the reaction chamber 102. The catalyst is located in the area formed by the inner wall of the reaction chamber 102, the outer surface of the heat-conducting column 106, the upper part of the movable plate 204 and the lower part of the discharge ramp 201. Therefore, before the reaction, the catalyst is first placed in the reaction chamber 102, and the catalyst uses its solid state to achieve a stable position in the reaction chamber 102, and then the reactants are placed and catalytic reactions are carried out with the catalyst.
[0032] A plurality of connecting springs 203 are evenly arranged on the top of the unloading inclined plate 201, and the top of the connecting spring 203 is fixedly connected to the bottom of the movable plate 204. The setting of the connecting spring 203 further improves the elastic reset performance of the movable plate 204. The outer surface of the movable plate 204 is sealed and slidably connected with the baffle 202 and the inner wall of the reaction chamber 102. Therefore, the movable plate 204 moves upward and scrapes the inner wall of the reaction chamber 102, thereby ensuring the cleanliness of the inside of the reaction chamber 102 and the unobstructedness of the catalyst. The moving height value of the movable plate 204 is less than the height value of the baffle 202. Therefore, the movable plate 204 will not detach along the baffle 202 when moving up and down in the top groove 205, thereby ensuring the stability and efficiency of the reaction.
[0033] A discharge hole 209 is formed in the area where the rear end of the discharge inclined plate 201 is not in contact with the inner wall of the reaction chamber 102 , and the catalyst and reactants are discharged in a lateral reciprocating cycle at the discharge hole 209 .
[0034] A plurality of docking holes 206 are evenly arranged inside the unloading inclined plate 201, and the inner wall of the docking hole 206 matches the outer surface of the heat-conducting column 106, so the heat-conducting column 106 passes through the docking hole 206, and a plurality of matching holes 207 are evenly arranged inside the movable plate 204, and the matching hole 207 corresponds to the docking hole 206. Similarly, the heat-conducting column 106 passes through the matching hole 207, and the inner wall of the matching hole 207 is provided with an elastic ring 208, and the inner wall of the elastic ring 208 is sealingly and slidably connected to the outer surface of the heat-conducting column 106. The elastic ring 208 is elastic, so when the movable plate 204 moves up and down inside the top groove 205, the movable plate 204 drives the elastic ring 208 inside the matching hole 207 to move up and down, and the elastic ring 208 is sealingly and elastically slidably connected to the outer surface of the heat-conducting column 106, thereby ensuring the sealing of the matching hole 207 without hindering the up and down movement of the movable plate 204.
[0035] The adjustment component 3 includes multiple inner grooves 301, and the positions of the inner grooves 301 match the positions of the discharge holes 209, that is, the inner grooves 301 are used to adjust the discharge amount of the reactants at the discharge holes 209. The inner sealing sliding connection of the inner grooves 301 is provided with a sealing push plate 303, and the sealing push plate 303 can slide in a sealed manner inside the inner grooves 301. The side of the sealing push plate 303 close to the reaction chamber 102 is provided with a driven plate 308 through a connecting rod 304, and the other end of the driven plate 308 is provided with an elastic plate 309. When the sealing push plate 303 moves, the driven plate 308 is synchronously driven to move through the connecting rod 304, and the elastic plate 309 moves and adjusts the opening size of the discharge hole 209, thereby further adjusting the discharge amount of the reactants to ensure that the heat of the reactants matches that of the heat-conducting column 106.
[0036] An expansion chamber 312 is formed between the sealing push plate 303 on one side close to the reaction chamber 102 and the inner wall of the inner groove 301. An expansion material is arranged inside the expansion chamber 312. The expansion material has the principle of thermal expansion and contraction. The expansion material inside each expansion chamber 312 detects the temperature value of the corresponding discharge hole 209. When the temperature of the reactant at the discharge hole 209 decreases, the volume of the expansion material decreases under the principle of thermal expansion and contraction, and the sealing push plate 303 moves toward the end close to the reaction chamber 102. A plurality of reset springs 305 are evenly arranged on the side of the sealing push plate 303 close to the reaction chamber 102. The other side of the reset spring 305 is fixedly connected to the inner wall of the expansion chamber 312. The setting of the reset spring 305 further improves the elastic reset effect of the sealing push plate 303.
[0037] A flow chamber 313 is formed between the sealing push plate 303 and the inner groove 301 away from the side of the reaction chamber 102, and a flowing gas is provided inside the flow chamber 313. When the sealing push plate 303 moves inside the inner groove 301, the volume of the flow chamber 313 changes. A plurality of vents 311 are evenly provided inside the outer shell 101. One end of the vent 311 is connected to the top groove 205, and the other end of the vent 311 is connected to the flow chamber 313. The gas inside the flow chamber 313 can flow with the top groove 205 via the vent 311. The movement of the sealing push plate 303 causes the volume of the flow chamber 313 to change, and the gas inside the flow chamber 313 flows with the top groove 205 along the vent 311. When the amount of gas inside the top groove 205 changes, the connecting spring 203 cooperates to drive the moving plate 204 to move up and down, thereby driving the catalyst above the moving plate 204 to vibrate, thereby improving the dredging property of the catalyst.
[0038] A connecting hole 302 is provided on one side of the inner groove 301, and the other side of the connecting hole 302 is connected to the reaction chamber 102. The outer surface of the connecting rod 304 is sealed and slidably connected to the inner wall of the connecting hole 302. The setting of the connecting hole 302 ensures the limiting effect of the lateral movement of the connecting rod 304. A limiting groove 306 is provided on the end of the connecting rod 304, and a limiting block 307 is provided on the side of the driven plate 308 close to the connecting rod 304. The limiting groove 306 is sealed and slidably connected to the limiting block 307. When the connecting rod 304 moves laterally, it drives the driven plate 308 to move. 08 moves horizontally, and because the unloading inclined plate 201 is inclined, the driven plate 308 moves up and down vertically synchronously under the limiting action of the unloading inclined plate 201 when moving horizontally. Therefore, the driven plate 308 moves up and down, left and right inside the reaction chamber 102. The height values of the limiting block 307 and the driven plate 308 are both smaller than the height value of the elastic plate 309. Therefore, the driven plate 308 will not contact the bottom of the unloading inclined plate 201 and the top of the moving plate 204, and the up and down movement of the moving plate 204 will not be hindered by the driven plate 308.
[0039] The elastic plate 309 is elastic, and the front and rear sides of the elastic plate 309 are sealed and slidably connected to the inner wall of the reaction chamber 102. The elastic plate 309 corresponds to the discharge hole 209. When the elastic plate 309 moves laterally, the opening size of the discharge hole 209 is adjusted. A plurality of stirring rods 310 are evenly arranged on one side of the elastic plate 309 close to the discharge inclined plate 201. The gaps between the plurality of stirring rods 310 change with the deformation of the elastic plate 309. When the stirring rods 310 move with the elastic plate 309 and the gaps change, the stirring rods 310 stir the catalyst inside the reaction chamber 102, further In order to improve the flowability and uniformity of the catalyst, wedge-shaped surfaces 314 are provided on the top and bottom of the elastic plate 309, and the wedge-shaped surfaces 314 are matched with the bottom of the discharge inclined plate 201 and the top of the movable plate 204 respectively. With the setting of the wedge-shaped surface 314, when the driven plate 308 drives the elastic plate 309 to move laterally at the position of the discharge hole 209, the wedge-shaped surface 314 is respectively squeezed with the bottom of the discharge inclined plate 201 and the top of the movable plate 204 and drives the elastic plate 309 to move up and down, and the elastic plate 309 drives the stirring rod 310 to move, thereby further improving the stirring effect on the catalyst.
[0040] Since the chemical reaction between the reactants and the catalyst is a strong endothermic reaction, when the temperature inside the reaction chamber 102 does not meet the catalytic reaction requirements of the reactants, the reactants will change and cause the reaction to stop. However, the prior art lacks real-time monitoring and corresponding adjustment of the reactant temperature inside the reaction chamber 102, and thus cannot ensure the stable progress of the reaction; at the same time, when the catalyst catalyzes the reaction with the laterally flowing reactants inside the reaction chamber 102 for a long time, the catalyst is prone to accumulation and blockage, thereby reducing the flow stability of the reactants; when the reactants or catalysts circulate back and forth laterally inside the reaction chamber 102, the reactants or catalysts will impact and collide with the inside of the reaction chamber 102, thereby causing damage to the reactant or catalyst structure; and when the flowing reactants impact the inner wall of the reaction chamber 102, the inner wall of the reaction chamber 102 will be attached and contaminated, and the reactants will adhere to the top of the movable plate 204, thereby reducing the cleanliness of the inner wall of the reaction chamber 102 and the movable plate 204, and affecting the subsequent lateral circulation of the reactants.
[0041] In order to solve the above problems, when the lateral flow catalyst bed structure is actually used, the catalyst bed structure is first placed in a suitable position. Since the internal temperature of the reaction chamber 102 is room temperature in the initial state, the sealing push plate 303 is in the initial position, and the sealing push plate 303 drives the elastic plate 309 to be in the initial position through the connecting rod 304 and the driven plate 308. The elastic plate 309 is in the initial position inside the discharge hole 209 and is close to the inner wall end of the reaction chamber 102, and the elastic plate 309 can move in the left and right directions. Then, the catalyst is poured into the reaction chamber 102 along the feed pipe 104. The catalyst continues to flow obliquely downward along the top of the moving plate 204. When the catalyst reaches the end of the discharge hole 209, the catalyst elastically contacts and turns with the elastic plate 309, further avoiding the collision between the catalyst and the inner wall of the reaction chamber 102 and causing damage to its structure or components, thereby effectively improving the stability and sufficiency of the catalyst flowing inside the reaction chamber 102.
[0042] When the catalyst is discharged along the discharge pipe 105 after multiple lateral circulation flows, the bottom of the discharge pipe 105 is blocked with a filter screen, and the volume of the reactants is smaller than the volume of the catalyst. At this time, only the reactants can pass through, but the catalyst cannot, further ensuring the thoroughness of the reaction between the catalyst and the reactants inside the reaction chamber 102. At the same time, the heat medium pipe on the outer surface of the shell 101 works and provides the required heat to the inside of the reaction chamber 102, and the heat conducting column 106 starts to work, thereby ensuring that the temperature of the catalyst above the movable plate 204 at different heights reaches the temperature required for the reaction, generally 400 degrees Celsius. This temperature setting further ensures the strong endothermic demand for the reaction between the reactants and the catalyst, and avoids the reaction being unable to proceed accurately and efficiently due to a sudden drop in the temperature of the reactants.
[0043] After the preliminary deployment is completed, the reactants are introduced into the reaction chamber 102 along the feed pipe 104. The reactants flow obliquely downward above the moving plate 204 and continuously react with the catalyst inside the reaction chamber 102. The reaction is a strong endothermic reaction. At this time, the heat conducting column 106 is used to provide the required heat for the reaction, thereby ensuring that the reaction continues to proceed stably. As the reactants continue to flow, the reactants reach the discharge hole 209 and turn, then the reactants realize lateral circulation flow and are finally discharged along the discharge pipe 105. This process improves the flow path of the reactants, increases the disturbance in the reaction chamber 102, and promotes the distribution of the reactants. Uniform; and increased reactant flow channels, which is conducive to the full conversion of reactants; the heat-conducting columns 106 and the discharge inclined plate 201 enhance heat conduction and can act as heat-conducting fins, thereby strengthening the heat transfer between the catalysts and the wall of the reaction chamber 102, making the temperature distribution in the reaction chamber 102 uniform, and promoting the reaction to proceed in the positive direction. When intermediate products of different stages are needed, it is only necessary to open the solenoid valve inside the intermediate material pipe 110 at the corresponding position, and the intermediate products in the catalytic strong endothermic reaction can reach the inside of the intermediate material pipe 110 along the side of the discharge inclined plate 201 at the corresponding position and finally be discharged, thereby effectively improving the selectivity of the intermediate products and ensuring the diversity of selection.
[0044] When the reactants reach the end of the discharge hole 209, the reactants contact the elastic plate 309 and turn. At the same time, the expansion material inside the expansion chamber 312 monitors the temperature of the reactants in real time. When the temperature of the reactants drops, it means that the reaction efficiency of the reactants and the heat-conducting column 106 is too high, that is, the heat provided by the heat-conducting column 106 cannot meet the catalytic reaction requirements of the reactants, which corresponds to the amount of the reactants. Therefore, in the subsequent catalytic reaction, the amount of reactants needs to be appropriately reduced to ensure that the reactants can react thoroughly and effectively when they continue to circulate back and forth laterally.
[0045] When the temperature of the reactants decreases, the temperature of the expansion material inside the expansion chamber 312 decreases, and the corresponding volume of the expansion material decreases, and the thrust exerted by the expansion material on the sealing push plate 303 decreases. Under the elastic force of the return spring 305, the sealing push plate 303 is driven to move closer to the end of the reaction chamber 102. When the sealing push plate 303 moves, it simultaneously drives the connecting rod 304 to move. When the connecting rod 304 moves, it drives the elastic plate 309 to move through the driven plate 308. The elastic plate 309 moves closer to the end of the discharge inclined plate 201, and the blocking area of the discharge hole 209 by the elastic plate 309 increases, and the corresponding opening area of the discharge hole 209 decreases. The reactants above the discharge inclined plate 201 enter the subsequent lateral flow downward along the discharge hole 209, and the flow rate is reduced, which further ensures that the subsequent reactants and the catalyst can thoroughly and effectively carry out a strong endothermic reaction on the basis of the heat provided by the heat conducting column 106, and avoids the incomplete catalytic reaction of the reactants when the amount of reactants is too much and the heat provided by the heat conducting column 106 does not meet the requirements, thereby ultimately affecting the reaction effect.
[0046] Similarly, when the temperature of the reactants rises, it means that the amount of reactants is too small, the heat conducting column 106 provides too much heat, and the amount of reactants introduced needs to be increased subsequently. Then, the heated volume of the expansion material inside the expansion chamber 312 increases, and the expansion material drives the sealing push plate 303 to stretch the reset spring 305 to move away from the reaction chamber 102 end. The sealing push plate 303 drives the elastic plate 309 to move away from the discharge inclined plate 201 end through the connecting rod 304 and the driven plate 308. The opening area of the discharge hole 209 increases, and the lateral flow of the reactants above the discharge inclined plate 201 along the discharge hole 209 increases, further ensuring that the reactants can react thoroughly and effectively.
[0047] At the same time, when the elastic plate 309 moves laterally inside the discharge hole 209 and adjusts the opening area of the discharge hole 209, the elastic plate 309 always maintains a close fit with the inner wall of the reaction chamber 102 by virtue of its own elasticity, thereby improving the elastic scraping effect on the inner wall of the reaction chamber 102. At the same time, the lateral movement of the elastic plate 309 can also adjust the squeezing force on the catalyst at the position of the discharge hole 209, thereby changing the squeezing force on the catalyst at this location, and driving the catalyst to vibrate at the discharge hole 209, further improving the dredging and uniformity of the catalyst, and avoiding the catalyst from accumulating for a long time and causing blockage, thereby affecting the fluidity and stability of the reactants inside the catalyst.
[0048] When the elastic plate 309 undergoes elastic deformation, the elastic plate 309 correspondingly drives the gaps between the multiple stirring rods 310 to change, and the stirring rods 310 swing regularly inside the discharge hole 209, thereby stirring the catalyst at the discharge hole 209 with the help of the stirring rods 310, thereby further improving the uniformity of the catalyst. This process is carried out continuously, slowly and steadily, and therefore will not cause damage to the structure of the catalyst itself. Therefore, while achieving the adjustment of the discharge amount of the reactant inside the discharge hole 209, the catalyst at the discharge hole 209 can also be vibrated and cleared, thereby improving the uniformity and stability of the flow of the reactant inside the catalyst.
[0049] When the elastic plate 309 moves laterally, with the help of the wedge-shaped surface 314 cooperating with the bottom of the discharge inclined plate 201 and the wedge-shaped top of the movable plate 204, the elastic plate 309 moves up and down inside the reaction chamber 102 accordingly. Specifically, when the elastic plate 309 moves toward the end of the discharge inclined plate 201, with the help of the limiting action of the limiting groove 306 and the limiting block 307, the driven plate 308 and the elastic plate 309 can move downward synchronously. When the elastic plate 309 moves downward, it correspondingly drives multiple stirring rods 310 to move downward and stir the catalyst inside the discharge hole 209, thereby further improving the stirring and vibration effect of the catalyst inside the discharge hole 209 while ensuring the scraping and cleaning effect of the inner wall of the reaction chamber 102, thereby ensuring the stability and unblocking of the catalyst.
[0050] Furthermore, when the sealing push plate 303 moves laterally inside the inner groove 301, the extrusion force exerted by the sealing push plate 303 on the flow chamber 313 changes, and the extrusion force on the flowing gas inside the flow chamber 313 changes synchronously, that is, when the sealing push plate 303 moves away from the reaction chamber 102, the sealing push plate 303 squeezes the internal gas of the flow chamber 313, and the internal gas of the flow chamber 313 enters the top groove 205 along the multiple vents 311, and the gas volume inside the top groove 205 increases and drives the moving plate 204 to stretch the connecting spring 203 to move upward, and the moving plate When the sealing push plate 303 moves upward, the catalyst above is squeezed synchronously. Similarly, when the sealing push plate 303 moves toward the end close to the reaction chamber 102, the gas inside the top groove 205 flows back to the inside of the flow chamber 313 along the multiple vents 311, and the movable plate 204 is driven to move downward along the top groove 205 under the elastic force of the connecting spring 203. The movable plate 204 can continuously vibrate up and down inside the top groove 205, further improving the vibration and dredging effect on the catalyst above the movable plate 204, ensuring that the catalyst will not be blocked when used for a long time, etc., thereby improving the fluidity and stability of the reactants.
[0051] When the reactants are circulated back and forth and the reaction is completed, the reactants reach the end of the discharge pipe 105 and are discharged for recycling. The above process is repeated to catalyze the reactants. After the reaction is completed, the filter screen inside the discharge pipe 105 is taken out, so that the catalyst is continuously discharged along the discharge pipe 105. At the same time, the temperature of the heat-conducting column 106 is adjusted to make the temperature inside the reaction chamber 102 constantly change. The expansion material inside the expansion chamber 312 drives the sealing push plate 303 to continuously move horizontally inside the inner groove 301, and the sealing push plate 303 corresponds to the inner groove 301. 1 continuously moves laterally inside, the sealing push plate 303 drives the elastic plate 309 to move laterally inside the reaction chamber 102 through the connecting rod 304 and the driven plate 308 and realizes the lateral scraping of the inner wall of the reaction chamber 102, and at the same time, the gas inside the flow chamber 313 flows back along the multiple vents 311 and the top groove 205 and drives the moving plate 204 to vibrate up and down, further improving the vibration scraping cleaning effect of the catalyst or reactant attached to the inner wall of the reaction chamber 102 and the upper part of the moving plate 204, ensuring the cleanliness and dredging of the structure inside, and avoiding affecting the subsequent reaction.
[0052] The catalyst bed structure improves the flow path of the reactants, increases the disturbance in the reaction chamber 102, promotes the uniform distribution of the reactants, and increases the flow channel of the reactants, which is conducive to the full conversion of the reactants. The heat-conducting column 106 and the discharge inclined plate 201 enhance heat conduction and can act as heat-conducting fins to strengthen the heat transfer between the catalyst and the wall of the reaction chamber 102, so that the temperature distribution in the reaction chamber 102 is uniform, and the reaction is promoted in the positive direction; at the same time, when the temperature at the discharge hole 209 changes, the position of the elastic plate 309 is adjusted accordingly, thereby realizing the adjustment of the opening area of the discharge hole 209, further ensuring that the flow of the reactants remains stable, avoiding too much or too little reactants, etc., which may cause the reaction to be inaccurate At the same time, when the elastic plate 309 moves laterally, the catalyst at the discharge hole 209 can be stirred with the help of the stirring rod 310, and the elastic plate 309 can further improve the dredging and stability of the catalyst at the discharge hole 209 in cooperation with the lateral vibration of the catalyst, thereby ensuring the flow stability of the reactants inside the catalyst; and when the sealing push plate 303 moves inside the inner groove 301, the flow of gas drives the moving plate 204 to vibrate up and down, thereby vibrating and dredging the catalyst above the moving plate 204, avoiding long-term accumulation of the catalyst and causing blockage, thereby reducing the reaction effect of the catalyst and the reactants; better cleaning performance, stronger dredging performance, simple and stable operation, and stronger adaptability.
[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A lateral flow catalyst bed structure, characterized in that: It comprises a shell component (1), wherein a plurality of feeding components (2) are evenly and staggeredly arranged inside the shell component (1), and a plurality of adjusting components (3) are evenly arranged inside the shell component (1), and each of the adjusting components (3) corresponds to a feeding component (2); The housing assembly (1) comprises a housing (101), a reaction chamber (102) is provided inside the housing (101), a catalyst is provided inside the reaction chamber (102), and a plurality of heat-conducting columns (106) are provided through the reaction chamber (102); The feeding assembly (2) comprises a plurality of material discharge inclined plates (201), wherein a movable plate (204) is movably connected above the material discharge inclined plates (201), wherein the movable plate (204) moves up and down to vibrate the catalyst, and a material discharge hole (209) is formed in an area where the rear end of the material discharge inclined plates (201) is not in contact with the inner wall of the reaction chamber (102); The adjustment assembly (3) comprises a plurality of inner grooves (301), the inner parts of the inner grooves (301) being sealingly slidably connected to a sealing push plate (303), a side of the sealing push plate (303) close to the reaction chamber (102) being provided with a driven plate (308) via a connecting rod (304), and an elastic plate (309) being provided at the other end of the driven plate (308), and the elastic plate (309) is movable and adjusts the opening size of the discharge hole (209).
2. The lateral flow catalyst bed structure according to claim 1, characterized in that: The catalyst is located in a region formed by the inner wall of the reaction chamber (102), the outer surface of the heat-conducting column (106), the upper part of the movable plate (204) and the lower part of the material discharging inclined plate (201). A plurality of through holes (109) are provided above and below the shell (101). The inner wall of the through hole (109) and the outer surface of the heat-conducting column (106) are sealed and connected to each other. The heat-conducting column (106) introduces heat required for the reaction into the reaction chamber (102). The catalyst and the reactant react in a strongly endothermic reaction. A plurality of intermediate material pipes (110) are evenly provided on one side of the shell (101). A solenoid valve is provided inside the intermediate material pipe (110). The plurality of intermediate material pipes (110) match the upper part of the material discharging inclined plate (201) at corresponding positions.
3. The lateral flow catalyst bed structure according to claim 1, characterized in that: A control component is provided on one side of the shell (101); a plurality of legs (103) are evenly provided on the outer surface of the shell (101); a buffer pad is provided at the bottom of the legs (103); a feed pipe (104) is provided on one side of the top of the shell (101); the bottom of the feed pipe (104) is connected to the reaction chamber (102); a discharge pipe (105) is provided on one side of the bottom of the shell (101); the top of the discharge pipe (105) is connected to the reaction chamber (102); the positions of the feed pipe (104) and the discharge pipe (105) are matched with the position of the discharge inclined plate (201); an upper inclined surface (107) is provided on the inner top of the reaction chamber (102); a lower inclined surface (108) is provided on the inner bottom of the reaction chamber (102); the upper inclined surface (107) and the lower inclined surface (108) are both corresponding to the discharge inclined plate (201).
4. The lateral flow catalyst bed structure according to claim 1, characterized in that: The plurality of material discharging inclined plates (201) are staggered and equidistantly distributed, the material discharging inclined plates (201) are obliquely downwardly arranged from the inner wall end of the reaction chamber (102) to the other end, a baffle plate (202) is provided at the end of the material discharging inclined plate (201), the baffle plate (202) and the inside of the reaction chamber (102) form a top groove (205), a plurality of connecting springs (203) are evenly provided at the top of the material discharging inclined plate (201), the top of the connecting spring (203) is fixedly connected to the bottom of the moving plate (204), the outer surface of the moving plate (204) is sealingly slidably connected to the baffle plate (202) and the inner wall of the reaction chamber (102), the moving plate (204) moves upward and scrapes the inner wall of the reaction chamber (102), and the moving height value of the moving plate (204) is less than the height value of the baffle plate (202).
5. The lateral flow catalyst bed structure according to claim 1, characterized in that: The interior of the unloading inclined plate (201) is evenly provided with a plurality of docking holes (206), the inner walls of the docking holes (206) match the outer surfaces of the heat-conducting columns (106), the interior of the movable plate (204) is evenly provided with a plurality of matching holes (207), the matching holes (207) correspond to the docking holes (206), the inner walls of the matching holes (207) are provided with elastic collars (208), the inner walls of the elastic collars (208) are sealingly and slidably connected to the outer surfaces of the heat-conducting columns (106).
6. The lateral flow catalyst bed structure according to claim 1, characterized in that: An expansion chamber (312) is formed between the side of the sealing push plate (303) close to the reaction chamber (102) and the inner wall of the inner groove (301), and an expansion material is provided inside the expansion chamber (312). The expansion material has the principle of thermal expansion and contraction. The expansion material inside each expansion chamber (312) detects the temperature value of the corresponding position of the discharge hole (209). A plurality of return springs (305) are evenly provided on the side of the sealing push plate (303) close to the reaction chamber (102), and the other side of the return spring (305) is fixedly connected to the inner wall of the expansion chamber (312).
7. The lateral flow catalyst bed structure according to claim 4, characterized in that: A flow chamber (313) is formed between the side of the sealing push plate (303) away from the reaction chamber (102) and the inner groove (301), wherein flowing gas is provided inside the flow chamber (313), and a plurality of vent holes (311) are evenly provided inside the housing (101), wherein one end of the vent hole (311) is connected to an adjacent top groove (205), and the other end of the vent hole (311) is connected to the flow chamber (313), and the movement of the sealing push plate (303) causes the volume of the flow chamber (313) to change, and the gas inside the flow chamber (313) circulates with the top groove (205) along the vent holes (311).
8. The lateral flow catalyst bed structure according to claim 1, characterized in that: A connecting hole (302) is provided on one side of the inner groove (301), and the other side of the connecting hole (302) is connected to the reaction chamber (102). The outer surface of the connecting rod (304) is sealed and slidably connected to the inner wall of the connecting hole (302). A limiting groove (306) is provided at the end of the connecting rod (304). A limiting block (307) is provided on the side of the driven plate (308) close to the connecting rod (304). The limiting groove (306) is sealed and slidably connected to the limiting block (307). The driven plate (308) moves up and down and left and right inside the reaction chamber (102), and the height values of the limiting block (307) and the driven plate (308) are both smaller than the height value of the elastic plate (309).
9. The lateral flow catalyst bed structure according to claim 1, characterized in that: The elastic plate (309) is elastic, and both sides of the elastic plate (309) are sealingly and slidably connected to the inner wall of the reaction chamber (102). The elastic plate (309) corresponds to the discharge hole (209). A plurality of stirring rods (310) are evenly arranged on one side of the elastic plate (309) close to the discharge inclined plate (201). The gaps between the plurality of stirring rods (310) change with the deformation of the elastic plate (309). The top and bottom of the elastic plate (309) are both provided with wedge-shaped surfaces (314), and the wedge-shaped surfaces (314) respectively match the bottom of the discharge inclined plate (201) and the top of the movable plate (204).
Citation Information
Patent Citations
Fixed-bed reactor and its gas distributor
CN106475018B
A flow-guiding support grid for catalyst bed in a reactor and a fluidized bed reactor
CN108854857B