High-yield MTBE catalytic distillation device

Abstract

The invention relates to the technical field of MTBE production, in particular to a high-yield MTBE catalytic distillation device. The problem that the temperature of a reaction section in an existing device can only be roughly monitored is solved. Comprising a fixing shell, the fixing shell is rotationally connected with a partition part, the partition part is provided with storage modules which are vertically distributed at intervals, the storage modules are used for storing catalysts, flow guide folded plates which are evenly distributed in the circumferential direction are fixedly connected into the fixing shell, and the flow guide folded plates are located between every two adjacent storage modules. A temperature sensor is arranged at the bent position of the flow guide folded plate, a temperature control module is arranged on the lower portion of the flow guide folded plate, a motor is installed on the fixing shell, and an output shaft of the motor is in transmission with the partition piece through a gear set. The flow direction of materials is guided through the flow guide folded plate, so that most of the materials pass through the temperature sensor in the downward flowing process, and the monitoring precision of the device on the temperature of the materials at different positions is improved.

Description

Technical Field

[0001] The invention relates to the technical field of MTBE production, in particular to a high-yield MTBE catalytic distillation device. Background Art

[0002] MTBE (methyl tert-butyl ether) catalytic distillation unit is a core equipment of modern MTBE production process. The device realizes the coupling of reaction and separation process by integrating the etherification reactor with the distillation tower, significantly improving the continuity and compactness of the process flow, while reducing the volatility of reaction temperature control, thereby effectively improving the MTBE yield (i.e., obtaining a higher target product ratio under the same raw material input conditions). In the MTBE synthesis process, the etherification reaction of the material needs to rely on strong acidic cation exchange resin particles as a catalyst, and the reaction itself is an exothermic process. In order to inhibit side reactions (such as isobutylene self-polymerization or dimethyl ether formation), the reaction temperature needs to be precisely controlled. In the existing device, the catalyst particles are usually deposited in the reaction section in the form of a fixed bed. Although the existing technology attempts to adjust the local temperature to balance the reaction rate by setting multiple temperature monitoring points and supporting temperature control devices in the gap between the bed layers, in actual operation, when the material flows through the catalyst bed layer under the action of gravity, its flow path has significant non-uniformity and randomness, and the contact frequency between the material and the catalyst varies with the position difference, resulting in inconsistent reaction exothermic intensity in different areas of the bed layer. However, the existing temperature monitoring module can only provide rough feedback based on data from discrete points and cannot reflect the overall temperature field distribution of the catalyst bed in real time, resulting in local high-temperature areas being difficult to identify and suppress in a timely manner, causing side reactions such as isobutylene polymerization to intensify, resulting in a decrease in the yield of MTBE, and ultimately affecting the operating efficiency and economy of the device. Summary of the invention

[0003] In order to overcome the shortcoming that the temperature of the reaction section can only be roughly monitored in the existing device, the object of the present invention is to provide a high-yield MTBE catalytic distillation device.

[0004] The technical solution is: a high-yield MTBE catalytic distillation device, comprising a fixed shell, the fixed shell is rotatably connected with a partition, the partition is provided with storage modules distributed vertically at intervals, the storage modules are used to store catalysts, the fixed shell is fixed with circumferentially uniformly distributed guide folds, the guide folds are located between two adjacent storage modules, a temperature sensor is provided at the bend of the guide fold, a temperature control module is provided at the lower part of the guide fold, the fixed shell is installed with a motor, and the output shaft of the motor and the partition are driven by a gear set.

[0005] As a further preferred solution, the cross-sectional area of ​​the guide fold gradually increases from top to bottom.

[0006] As a further preferred solution, symmetrically distributed elastic plates are provided at the bottom of the guide fold, and an expansion airbag is fixedly connected between the symmetrically distributed elastic plates on the same guide fold, and the expansion airbag is filled with heat-sensitive gas.

[0007] As a further preferred scheme, the storage module includes an outer shell, which is rotatably connected to the fixed shell, and the outer shell is fixed with circumferentially distributed connecting columns and symmetrically distributed filter screens. The symmetrically distributed filter screens on the same outer shell are located between the circumferentially distributed connecting columns, and the back sides of the symmetrically distributed filter screens are fixed with circumferentially distributed fixing sleeves, which are fixed to adjacent connecting columns. All the connecting columns on the same outer shell are commonly fixed to an inner shell, and the inner shell is fixed to the partition, and the filter screen is slidably connected to the adjacent inner shell. The outer shell is provided with circumferentially evenly distributed discharge ports, and a fixing component for preventing the catalyst from rolling is provided in the inner shell, and a replacement mechanism for replacing the catalyst in the adjacent storage module is provided on the outer shell.

[0008] As a further preferred solution, the fixed component includes symmetrically distributed sliding rings, which are symmetrically distributed and slidably connected in adjacent inner shells. The filter screen is made of elastic metal material, and the sliding ring is used to squeeze the adjacent filter screen to move. A transmission gear is rotatably connected in the inner shell, and the sliding ring is fixed with a rack meshing with the adjacent transmission gear.

[0009] As a further preferred scheme, the replacement mechanism includes a first hydraulic telescopic rod evenly distributed in the circumference, the first hydraulic telescopic rod is fixed in the outer shell, and the first hydraulic telescopic rod corresponds to the discharge port one by one, the telescopic end of the first hydraulic telescopic rod is fixed with a second sealing plate, the second sealing plate is slidably connected to the adjacent outer shell, the second sealing plate is used to seal the adjacent discharge port, the inner shell is fixed and connected to a feed head evenly distributed in the circumference, the feed head is slidably connected with the first sealing plate, and a tension spring is installed between the two, the first sealing plate is used to seal the feed head and squeeze the adjacent sliding ring to move, and a driving component for driving the first sealing plate to move is provided in the fixed shell.

[0010] As a further preferred scheme, the driving assembly includes a first hydraulic push rod, which is fixed in the fixed shell, the telescopic end of the first hydraulic push rod is rotatably connected to a spline rod, the spline rod is fixed to a feed end head that is evenly distributed in the circumference, the feed end head is used to squeeze the adjacent first blocking plate to move, the feed head is used to connect the feed end head and the storage module, the partition is fixed to a fixing part, the fixing part is rotatably connected to a spline sleeve, the spline sleeve is spline-connected to the spline rod, and a rotating assembly for driving the spline rod to rotate relative to the partition is provided in the fixed shell.

[0011] As a further preferred scheme, a second hydraulic telescopic rod evenly distributed in the circumferential direction is fixedly connected to the inner shell, a spring is installed between the telescopic end of the second hydraulic telescopic rod and its fixed part, the second hydraulic telescopic rod and the first hydraulic telescopic rod on the same storage module correspond one to one, and the corresponding second hydraulic telescopic rod and the first hydraulic telescopic rod are connected through a hose, and the feed end is used to squeeze the telescopic end of the second hydraulic telescopic rod.

[0012] As a further preferred scheme, the rotating assembly includes a second hydraulic push rod, the second hydraulic push rod is fixed in the fixed shell, the telescopic end of the second hydraulic push rod is rotatably connected with an adjustment ring, the adjustment ring is slidably connected to the fixed part, the adjustment ring is provided with an inclined groove, and the outside of the spline sleeve is provided with a protrusion that slides along the inclined groove on the adjustment ring.

[0013] As a further preferred scheme, it also includes ventilation heads distributed at vertical intervals, the ventilation heads are fixedly connected to and connected with the fixed shell, the fixed shell is provided with discharge troughs distributed at vertical intervals, the number of the discharge troughs corresponds one-to-one with the number of the storage modules, the ventilation heads correspond one-to-one with the discharge troughs, the discharge troughs are connected with the discharge port of the adjacent outer shell and the adjacent ventilation heads, and the fixed shell is fixedly connected and connected with a discharge head near the adjacent discharge trough.

[0014] The present invention has the following advantages: the present invention guides the flow direction of the material through the guide folding plate, so that most of the material passes through the temperature sensor during the downward flow, thereby increasing the monitoring accuracy of the device for the material temperature at different positions, thereby increasing the accuracy of the device in adjusting the material temperature, inhibiting the occurrence of side reactions, and improving the yield of MTBE production. At the same time, the catalyst and the material are driven to rotate through the separator and the storage module, and the contact position of the catalyst and the material is continuously changed, thereby increasing the reaction efficiency and reducing the probability of local overheating.

[0015] The present invention utilizes the characteristic of the storage module to drive the catalyst to rotate, and uses the feed end head to control the first sealing plate and the second sealing plate to be opened or closed respectively, so as to realize the function of replacing the catalyst at any time during the reaction process, and the replacement process will not affect the use performance of the catalyst in other storage modules. By transferring the work of cleaning and maintaining the catalyst to the outside of the device, the device can be continuously produced, thus reducing the waste of production time and improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cross-sectional view of a fixed shell of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the separator, storage module and guide folding plate of the present invention; Figure 4 An exploded view of the fixed shell and the partition of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the storage module, the guide folding plate and the temperature sensor of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the guide folding plate, the temperature sensor and the temperature control module of the present invention; Figure 7 An exploded view of the outer shell and the filter screen of the present invention; Figure 8 is a cross-sectional view of the inner shell of the present invention; Fig. 9 It is a cross-sectional view of the outer shell and the inner shell of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the separator, the first hydraulic push rod and the spline rod of the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the fixing member, the spline sleeve and the adjusting ring of the present invention; Fig.12 is a cross-sectional view of the fixing member and the adjusting ring of the present invention; Fig.13 It is an exploded view of the spline sleeve and the adjusting ring of the present invention.

[0017] Wherein: 1-fixed shell, 101-liquid inlet pipe, 102-exhaust pipe, 103-liquid discharge pipe, 104-discharge trough, 2-partition, 3-storage module, 31-outer shell, 311-discharge port, 32-inner shell, 321-feed head, 322-first blocking plate, 33-connecting column, 34-filter screen, 341-fixed sleeve, 35-sliding ring, 351-transmission gear, 36-first hydraulic telescopic rod, 361-second blocking plate, 37-second hydraulic telescopic rod, 4-guide folding plate, 401-elastic plate, 402-expansion airbag, 5-temperature sensor, 6-temperature control module, 7-motor, 8-first hydraulic push rod, 81-spline rod, 82-feed end, 9-fixed part, 91-spline sleeve, 92-second hydraulic push rod, 93-adjusting ring, 10-vent head, 11-discharge head. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0019] High yield MTBE catalytic distillation unit, such as Figure 1-Figure 6 As shown, it includes a fixed shell 1, which is rotatably connected to a partition 2, and the partition 2 is provided with storage modules 3 distributed vertically at intervals, and the storage modules 3 are used to store catalysts. The fixed shell 1 is fixed with guide folds 4 that are evenly distributed circumferentially, and the guide folds 4 are located between two adjacent storage modules 3. A temperature sensor 5 is provided at the bending part of the guide fold 4, and a temperature control module 6 is provided at the lower part of the guide fold 4. The fixed shell 1 is installed with a motor 7, and the output shaft of the motor 7 is driven by the partition 2 through a gear set.

[0020] In the above scheme, the middle part of the fixed shell 1 is the reaction section, the upper part of the fixed shell 1 is the distillation section, and the lower part of the fixed shell 1 is the stripping section. The partition 2 separates the reaction section and the distillation section in the fixed shell 1. The distillation section and the stripping section are connected through the middle part of the partition 2. The distillation section is located at the upper part of the partition 2, and the stripping section is located at the lower part of the partition 2. The upper part of the reaction section of the fixed shell 1 is fixedly connected and connected with a liquid inlet pipe 101, which is used to discharge fully mixed methanol and isobutylene raw materials (hereinafter, the mixture in the reaction process is collectively referred to as materials) into the fixed shell 1. In this scheme, the isobutylene raw material added to the fixed shell 1 can be a mixed butene raw material (including isobutylene The fixed shell 1 is provided with a reboiler in the stripping section, and the reboiler is an existing device for heating the liquid in the stripping section to evaporate isobutylene and part of the reaction impurities into gaseous state, and then separating isobutylene and impurities into MTBE. The motor 7, the temperature sensor 5, the temperature control module 6 and the reboiler are all electrically connected to the external control terminal.

[0021] As a further preferred solution, Figure 5 and Figure 6 As shown, the cross-sectional area of ​​the guide baffle 4 increases gradually from top to bottom.

[0022] As a further preferred solution, Figure 6 As shown, symmetrically distributed elastic plates 401 are provided at the bottom of the guide fold plate 4, and an expansion airbag 402 is fixedly connected between the symmetrically distributed elastic plates 401 on the same guide fold plate 4, and the expansion airbag 402 is filled with heat-sensitive gas.

[0023] In the above scheme, the guide fold plates 4 in the same horizontal plane together form a plurality of annularly distributed zigzag flow channels. When the material flows through the zigzag flow channel, it is guided by the upper side of the zigzag flow channel and flows toward the adjacent temperature sensor 5. At this time, most of the material passes through the bend of the guide fold plate 4 during the flow process, that is, most of the material passes through the adjacent temperature sensor 5 during the flow process, thereby improving the accuracy of the temperature sensor 5 in monitoring the material temperature. The cross-sectional area of ​​the guide fold plate 4 gradually increases from top to bottom, which is used to gradually reduce the cross-sectional area of ​​the zigzag flow channel from top to bottom, thereby gradually increasing the speed at which the material flows downward, and increasing the material The speed of the material entering the lower storage module 3 is increased, thereby reducing the residence time of the material in the storage module 3, avoiding the material from staying in the storage module 3 for a long time and causing the material temperature to gradually increase, thereby reducing the probability of aggravated side reactions of the material. The elastic plate 401 and the expansion airbag 402 use the principle of thermal expansion and contraction of thermosensitive gas to fine-tune the speed of the material flowing downward in time according to the real-time temperature of the material, thereby increasing the accuracy of regulating the material temperature. The storage module 3 can be installed with a regulating module for regulating the catalyst temperature in an existing device. Since this part of the content is not the focus of the present invention, it will not be described in detail here.

[0024] The working process is as follows: when preparing to produce MTBE, the staff first starts the motor 7 and the reboiler through the control terminal. The output shaft of the motor 7 drives the partition 2 to rotate slowly clockwise (from a top-down perspective) through the gear set. The partition 2 drives the storage module 3 on it to rotate together, and the storage module 3 drives the catalyst inside it to rotate clockwise together. The staff transports materials into the liquid inlet pipe 101 through the existing device. After the material enters the fixed shell 1 through the liquid inlet pipe 101, it flows downward along the gap between the fixed shell 1 and the partition 2, and passes through each storage module 3 from top to bottom. At this time, because the storage module 3 itself rotates, the contact frequency between the catalyst and the material is increased, thereby improving the reaction rate of the material. When the material passes through the gap between two adjacent storage modules 3, the material enters the guide fold plate 4 between the two storage modules 3. Since the guide fold plate 4 does not follow the partition 2 Rotation, so when the material flows out of the rotating storage module 3, it will first impact the upper part of the adjacent guide fold plate 4, and then the material will be guided by the guide fold plate 4 and flow downward along the zigzag flow channel. At this time, the flow direction of the material is a mixed flow state, which is conducive to the mixing of materials with different reaction degrees. When the material flows out of the upper part of the guide fold plate 4, the material impacts the bend of the adjacent guide fold plate 4 under the action of fluid inertia. At this time, most of the material will contact with the temperature sensor 5 during the flow process, thereby increasing the accuracy of the temperature sensor 5 in monitoring the material temperature. The temperature sensor 5 returns the monitored data to the control terminal in real time, and the material then continues to flow downward along the zigzag flow channel. The control terminal adjusts the temperature of the material by adjusting the temperature control module 6 at the bottom of the guide fold plate 4, thereby reducing the probability of an increase in by-products due to excessively high temperature, thereby increasing the yield of MTBE of the device.

[0025] After the material passes through the zigzag flow channel, the temperature of the material at different positions is not equal. At this time, the expansion airbags 402 at different positions are filled with heat-sensitive gases due to the different temperatures of the surrounding materials, which leads to different expansion degrees of the different expansion airbags 402. The expansion airbags 402 at the lower material temperature have a lower expansion degree. Therefore, when the distance between two adjacent elastic plates 401 on the same guide fold plate 4 is small, the flow area of ​​the zigzag flow channel is large, the pressure of the material flowing downward from this place is small, and the speed of the material flowing downward is slow. When the expansion degree of the expansion airbag 402 at the higher material temperature is large, the two adjacent elastic plates 401 at this place are affected by The adjacent expansion airbags 402 are squeezed and bent in reverse, and the flow area of ​​the zigzag flow channel is reduced, which increases the pressure of the material flowing downward from there, and increases the speed at which the material flows downward. By dynamically fine-tuning the speed at which the material flows downward, the speed at which the material with a lower temperature flows downward is slowed down, increasing the contact time between the material and the catalyst at this location, thereby increasing the reaction rate of the material at this location, and at the same time increasing the speed at which the material with a higher temperature flows downward, reducing the time for the material to pass through the adjacent storage module 3 at the lower side, thereby avoiding an increase in the reaction time of the material at this location, causing the temperature of the material at this location to rise rapidly, and avoiding the occurrence of aggravated side reactions of the material, etc.

[0026] After the material passes through all the storage modules 3, the material passes through the lower part of the partition 2, enters and stays in the distillation section at the bottom of the fixed shell 1. At this time, the reboiler heats the material to evaporate the incompletely reacted butene and part of the reaction impurities into gas, thereby separating the butene from the MTBE in the material. Subsequently, the MTBE is discharged to the outside through the drain pipe 103, and the gaseous substances such as butene float upward from the middle of the partition 2 to the distillation section and are discharged to the outside through the exhaust pipe 102.

[0027] When there is no need to continue producing MTBE, the staff shuts down the motor 7 and the reboiler through the control terminal.

[0028] As a further preferred solution, Figure 5-Figure 9 As shown, the storage module 3 includes an outer shell 31, which is rotatably connected to the fixed shell 1, and the outer shell 31 is fixed with circumferentially distributed connecting columns 33 and symmetrically distributed filter screens 34. The symmetrically distributed filter screens 34 on the same outer shell 31 are located between the circumferentially distributed connecting columns 33, and the back sides of the symmetrically distributed filter screens 34 are fixed with circumferentially distributed fixing sleeves 341, and the fixing sleeves 341 are fixed to adjacent connecting columns 33. All connecting columns 33 on the same outer shell 31 are commonly fixed to the inner shell 32, and the inner shell 32 is fixed to the partition 2. The filter screen 34 is slidably connected to the adjacent inner shell 32. The outer shell 31 is provided with circumferentially evenly distributed discharge ports 311, and the inner shell 32 is provided with a fixing component for preventing the catalyst from rolling. The outer shell 31 is provided with a replacement mechanism for replacing the catalyst in the adjacent storage module 3.

[0029] In the above scheme, the catalyst in the existing device needs to be cleaned and maintained regularly during use, which makes the existing device not continuous in the process of producing MTBE. Therefore, a storage module 3 is specifically disclosed, and at the same time, a loading and unloading mechanism adapted to the above storage module 3 is disclosed, which is used to discharge the old catalyst during the production process and replace it with a new catalyst in time, and transfer the work of cleaning and maintaining the catalyst to the outside of the device, so that the device can be continuously produced and reduce the waste of production time. In the above scheme, there are two discharge ports 311, and the inner side of the outer shell 31 is approximately elliptical. The two discharge ports 311 are both located on the long axis of the ellipse on the inner side of the outer shell 31, so that the catalyst is automatically discharged to the two discharge ports 311 under the action of centrifugation. In this scheme, a discharge pipe connected to the discharge port 311 is provided in the fixed shell 1, which is used to guide the catalyst discharged from the discharge port 311 to the outside of the fixed shell 1.

[0030] As a further preferred solution, Figure 8 and Fig. 9 As shown, the fixed component includes symmetrically distributed sliding rings 35, which are all slidably connected in adjacent inner shells 32. The filter screen 34 is made of elastic metal material. The sliding ring 35 is used to squeeze the adjacent filter screen 34 to move. A transmission gear 351 is rotatably connected in the inner shell 32, and the sliding ring 35 is fixedly connected to a rack meshing with the adjacent transmission gear 351.

[0031] As a further preferred solution, Figure 8-Figure 11 As shown, the replacement mechanism includes a first hydraulic telescopic rod 36 uniformly distributed in the circumferential direction, the first hydraulic telescopic rod 36 is fixedly connected in the outer shell 31, and the first hydraulic telescopic rod 36 corresponds one-to-one with the discharge port 311, the telescopic end of the first hydraulic telescopic rod 36 is fixedly connected with a second blocking plate 361, the second blocking plate 361 is slidably connected to the adjacent outer shell 31, the second blocking plate 361 is used to block the adjacent discharge port 311, the inner shell 32 is fixedly connected and connected with a feed head 321 uniformly distributed in the circumferential direction, the feed head 321 is slidably connected with the first blocking plate 322, and a tension spring is installed therebetween, the first blocking plate 322 is used to block the feed head 321 and squeeze the adjacent sliding ring 35 to move, and a driving component for driving the first blocking plate 322 to move is provided in the fixed shell 1.

[0032] In the above scheme, two feed heads 321 are provided on an inner shell 32, and two first hydraulic telescopic rods 36 and two second blocking plates 361 are provided on an outer shell 31. The number of feed heads 321, discharge port 311, first hydraulic telescopic rod 36, second blocking plate 361 and first blocking plate 322 can be changed according to actual conditions. The filter screen 34 is made of elastic metal material. The two sliding rings 35 on the same inner shell 32 are used to squeeze adjacent filter screens 34 so that the two adjacent filter screens 34 move toward each other, thereby making the two adjacent filter screens 34 deform together. The two filter screens 34 jointly fix the catalyst between them, and the elastic force of the tension spring on the first blocking plate 322 is greater than the elastic force of the adjacent filter screens 34.

[0033] As a further preferred solution, Figure 1 , Figure 2 and Figure 10-13 As shown, the driving assembly includes a first hydraulic push rod 8, which is fixedly connected to the fixed shell 1, and the telescopic end of the first hydraulic push rod 8 is rotatably connected to a spline rod 81, and the spline rod 81 is fixedly connected to a feed end head 82 uniformly distributed in the circumference, and the feed end head 82 is used to squeeze the adjacent first blocking plate 322 to move, and the feed head 321 is used to connect the feed end head 82 and the storage module 3, and the partition 2 is fixedly connected to a fixing member 9, and the fixing member 9 is rotatably connected to a spline sleeve 91, and the spline sleeve 91 is spline-connected to the spline rod 81, and a rotating assembly for driving the spline rod 81 to rotate relative to the partition 2 is provided in the fixed shell 1.

[0034] As a further preferred solution, Figure 8 and Figure 10-13 As shown, a second hydraulic telescopic rod 37 evenly distributed in the circumferential direction is fixedly connected to the inner shell 32, a spring is installed between the telescopic end of the second hydraulic telescopic rod 37 and its fixed part, the second hydraulic telescopic rod 37 and the first hydraulic telescopic rod 36 on the same storage module 3 correspond one to one, and the corresponding second hydraulic telescopic rod 37 and the first hydraulic telescopic rod 36 are connected by a hose, and the feed end 82 is used to squeeze the telescopic end of the second hydraulic telescopic rod 37.

[0035] As a further preferred solution, Figure 2 and Figure 10-13 As shown, the rotating assembly includes a second hydraulic push rod 92, which is fixed in the fixed shell 1. The telescopic end of the second hydraulic push rod 92 is rotatably connected to an adjusting ring 93. The adjusting ring 93 is slidably connected to the fixing member 9. The adjusting ring 93 is provided with an inclined groove, and a protrusion sliding along the inclined groove on the adjusting ring 93 is provided outside the spline sleeve 91.

[0036] In the above scheme, the initial state of the telescopic end of the first hydraulic push rod 8 is a fully retracted state, the initial state of the telescopic end of the second hydraulic push rod 92 is a fully extended state, the initial state of the feed end head 82 is located above the uppermost first blocking plate 322, the initial state of the first blocking plate 322 is blocked with the adjacent feed head 321, the two sliding rings 35 initially squeeze the adjacent filter screens 34 to deform, the initial state of the filter screen 34 is a power storage state, the number of the second hydraulic telescopic rods 37 is two, the feed end head 82 is connected to the external vacuum feeder through a rotary joint (the vacuum feeder and the rotary joint are both existing technologies and can be replaced by other machines with the same function), the second hydraulic The volume of the telescopic rod 37 is equal to the volume of the adjacent first hydraulic telescopic rod 36. When the telescopic end of the second hydraulic telescopic rod 37 is squeezed and retracted, the hydraulic oil in the second hydraulic telescopic rod 37 flows into the adjacent first hydraulic telescopic rod 36, thereby causing the telescopic end of the first hydraulic telescopic rod 36 to retract inward. The initial state of the protrusion on the spline sleeve 91 is located at the upper end of the slide groove on the adjustment ring 93. When the adjustment ring 93 moves upward relative to the fixing member 9, the inclined slide groove on the adjustment ring 93 drives the spline sleeve 91 to rotate counterclockwise (from top to bottom perspective). When the adjustment ring 93 moves downward relative to the fixing member 9, the inclined slide groove on the adjustment ring 93 drives the spline sleeve 91 to rotate clockwise (from top to bottom perspective).

[0037] The working process is as follows: before starting the device, the staff fills all the storage modules 3 with the catalyst by manual filling or other methods. Then the staff uses the device to produce MTBE according to the above working process. In the process of producing MTBE, the activity of the catalyst gradually decreases. The staff estimates the usage status of the catalyst based on the production time. When the activity of the catalyst decreases to a state where replacement is required, the staff takes out the old catalysts in different storage modules 3 in turn, and fills the new catalysts into the storage modules 3. During this process, the motor 7 is always in working condition, and the partition 2, storage module 3, spline rod 81, feed end 82, fixing part 9, spline sleeve 91 and adjustment ring 93 are always in synchronous rotation state.

[0038] Take the uppermost storage module 3 and its components as an example (i.e. Fig.11Taking the parts in the middle as an example), the staff first controls the telescopic end of the second hydraulic push rod 92 through the control terminal to drive the adjusting ring 93 to retract upward, so that the adjusting ring 93 drives the spline sleeve 91, the spline rod 81 and the feeding end head 82 to rotate counterclockwise until the feeding end head 82 is staggered with the adjacent first blocking plate 322 in the vertical direction. The staff controls the telescopic end of the second hydraulic push rod 92 to stop moving through the control terminal. At this time, the protrusion on the spline sleeve 91 is located in the middle of the slide groove on the adjusting ring 93. Then the staff controls the telescopic end of the first hydraulic push rod 8 to extend downward through the control terminal until the lowermost side of the feeding end head 82 is aligned with the telescopic end of the second hydraulic telescopic rod 37. The staff controls The control terminal controls the telescopic end of the first hydraulic push rod 8 to stop moving, and controls the telescopic end of the second hydraulic push rod 92 to continue to retract upward to the limit position, so that the adjusting ring 93 drives the spline sleeve 91, the spline rod 81 and the feed end head 82 to continue to rotate counterclockwise, and the feed end head 82 gradually squeezes the telescopic end of the adjacent second hydraulic telescopic rod 37, so that the telescopic end of the second hydraulic telescopic rod 37 retracts to the limit position, and the spring on the second hydraulic telescopic rod 37 is compressed and stored, and the hydraulic oil in the second hydraulic telescopic rod 37 flows into the adjacent first hydraulic telescopic rod 36, so that the telescopic end of the adjacent first hydraulic telescopic rod 36 drives the second blocking plate 361 to retract, and the second blocking plate 361 releases the adjacent discharge port 311 The catalyst is then blocked. At this time, the catalyst is discharged outward from the discharge port 311 under the action of centrifugation. The catalyst moves to the outside of the fixed shell 1 through the discharge pipe in the fixed shell 1 that is connected to the discharge port 311. When the device discharges the old catalyst during the production process, part of the material is discharged along with the old catalyst. The staff uses the existing separation device to separate the catalyst and the raw material, and returns the raw material to the liquid inlet pipe 101. When the catalyst is completely discharged, the control terminal controls the telescopic end of the second hydraulic push rod 92 to extend and reset. The telescopic end of the second hydraulic push rod 92 drives the feed end 82 to rotate and reset through the adjusting ring 93, the spline sleeve 91 and the spline rod 81 to not contact the telescopic end of the second hydraulic telescopic rod 37. position, and then the control terminal closes the second hydraulic push rod 92. The telescopic end of the second hydraulic telescopic rod 37 is extended and reset under the action of the spring thereon, so that the telescopic end of the first hydraulic telescopic rod 36 and the second blocking plate 361 are synchronously moved and reset, and the second blocking plate 361 re-blocks the adjacent discharge port 311 to prevent the newly loaded catalyst from being discharged outward. When the control terminal closes the second hydraulic push rod 92, the control terminal controls the telescopic end of the first hydraulic push rod 8 to move upward and reset to the initial position. Then the control terminal controls the telescopic extension of the second hydraulic push rod 92 to reset to the initial position, so that the feed end 82 is reset to the initial position, and is ready to fill the catalyst into the storage module 3.

[0039] When the catalyst is filled into the storage module 3, the staff controls the telescopic end of the first hydraulic push rod 8 to move downward through the control terminal, and the telescopic end of the first hydraulic push rod 8 drives the spline rod 81 and the feed end 82 to move downward together, and the feed end 82 squeezes the first blocking plate 322 to move downward, and the tension spring on the first blocking plate 322 stretches and accumulates force, and the two sliding rings 35 move back to back under the elastic force of the adjacent filter screen 34 until the first blocking plate 322 and the adjacent parts move to Fig.11 When in the position shown, the staff controls the telescopic end of the first hydraulic push rod 8 to stop moving downward through the control terminal. At this time, the feed end 82 is connected to the feed head 321. The staff controls the vacuum loader to transport the catalyst into the feed end 82. The catalyst enters the feed head 321 through the feed end 82, and then enters the storage module 3. At this time, the catalyst is accumulated on one side of the storage module 3 close to the outer shell 31 under the action of centrifugal force, which is convenient for filling the storage module 3 with the catalyst.

[0040] After the staff has filled a sufficient amount of catalyst, the staff turns off the vacuum loader and controls the telescopic end of the first hydraulic push rod 8 to move upward and reset through the control terminal. At this time, the telescopic end of the first hydraulic push rod 8 drives the feed end head 82 to move upward through the spline rod 81, and the feed end head 82 stops squeezing the first blocking plate 322. The first blocking plate 322 moves upward and resets under the action of the tension spring thereon, and blocks the feed head 321, and squeezes the lower sliding ring 35 to move upward, and the lower filter screen 34 is deformed upward. During the movement of the lower sliding ring 35, the transmission gear 351 is driven to rotate through its upper rack, and the transmission gear 351 drives the upper sliding ring 35 to move downward, and the upper filter screen 34 is deformed downward. The filter screens 34 on the upper and lower sides jointly wrap the catalyst in the storage module 3, thereby avoiding the continuous displacement of the catalyst in the storage module 3 during rotation, thereby reducing the probability of catalyst wear.

[0041] When it is necessary to discharge or fill the catalyst into other storage modules 3 on the lower side, the staff needs to first control the second hydraulic push rod 92 to work through the control terminal before controlling the telescopic end of the first hydraulic push rod 8 to move downward through the control terminal, so that the telescopic end of the second hydraulic push rod 92 retracts upward, and the telescopic end of the second hydraulic push rod 92 simultaneously drives the adjustment ring 93 to move upward, and the adjustment ring 93 drives the spline sleeve 91 to rotate counterclockwise (from a top-down perspective) until the feed end 82 and the first blocking plate 322 are staggered in the vertical direction, so as to avoid the feed end 82 and the uppermost first blocking plate 322 being squeezed against each other when the telescopic end of the first hydraulic push rod 8 moves downward, causing The feed end head 82 cannot move downward to the specified position. After the staff offsets the feed end head 82 from the first sealing plate 322, the staff closes the second hydraulic push rod 92 through the control terminal, and controls the first hydraulic push rod 8 to drive the feed end head 82 to move downward to an appropriate height (for example, when the catalyst of the second-layer storage module 3 needs to be filled or discharged, the feed end head 82 needs to first move to the bottom of the first-layer first sealing plate 322 and the top of the second-layer first sealing plate 322). Then the staff controls the movement of the feed end head 82 according to the same steps as above to discharge the catalyst in other storage modules 3 located on the lower side, or to fill the catalyst into the storage module 3.

[0042] During normal use of the device, the feed end 82 does not contact the telescopic end of the second hydraulic telescopic rod 37 and the first blocking plate 322. The first blocking plate 322 is always located at the position of blocking the feed head 321 under the action of the adjacent tension spring. The two filter screens 34 jointly clamp the adjacent catalysts, and the second blocking plate 361 always blocks the adjacent discharge port 311.

[0043] As a further preferred solution, Figure 1-Figure 4 As shown, it also includes vertically spaced ventilation heads 10, which are fixedly connected to and communicated with the fixed shell 1. The fixed shell 1 is provided with discharge grooves 104 which are vertically spaced. The number of the discharge grooves 104 corresponds one-to-one to the number of the storage modules 3. The ventilation heads 10 correspond one-to-one to the discharge grooves 104. The discharge grooves 104 are connected to the discharge port 311 of the adjacent outer shell 31 and the adjacent ventilation heads 10. The fixed shell 1 is fixedly connected to and communicated with a discharge head 11 near the adjacent discharge groove 104.

[0044] The above scheme aims to propose a specific structure for discharging the catalyst, using a discharge trough 104 instead of the discharge pipe in the above scheme, and each discharge trough 104 corresponds to at least one vent head 10 and a discharge head 11, the vent head 10 is connected to an external air supply system, and the discharge head 11 is connected to an external storage system. The vent head 10 promotes the catalyst discharged from the discharge port 311 to move to the discharge head 11 by ventilating the adjacent discharge trough 104, thereby discharging the catalyst out of the fixed shell 1.

[0045] The working process is as follows: when the staff intends to take out the catalyst in the uppermost storage module 3, the staff first starts the external air supply system, and connects the uppermost ventilation head 10 with the air supply system, and the uppermost discharge head 11 with the storage system. At this time, the air supply system supplies air to the uppermost ventilation head 10, and the gas passes through the uppermost discharge trough 104 and is discharged outwardly from the discharge head 11. Then the staff discharges the catalyst in the uppermost storage module 3 according to the same steps as above. After the catalyst enters the discharge trough 104 under the action of centrifuge, it is discharged outwardly from the discharge head 11 following the air flow. The staff collects the discharged catalyst through the existing storage system to facilitate the subsequent cleaning of the catalyst. When the staff has discharged all the catalyst, the staff turns off the air supply system, and disconnects the connection between the ventilation head 10 and the air supply system, and the connection between the discharge head 11 and the storage system.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-yield MTBE catalytic distillation unit, characterized in that: The invention comprises a fixed shell (1), wherein the fixed shell (1) is rotatably connected to a partition (2), wherein the partition (2) is provided with storage modules (3) distributed at vertical intervals, wherein the storage modules (3) are used to store catalysts, wherein a circumferentially uniformly distributed flow guide folding plate (4) is fixedly connected to the fixed shell (1), wherein the flow guide folding plate (4) is located between two adjacent storage modules (3), wherein a temperature sensor (5) is provided at a bend of the flow guide folding plate (4), wherein a temperature control module (6) is provided at the lower part of the flow guide folding plate (4), and wherein a motor (7) is installed on the fixed shell (1), wherein an output shaft of the motor (7) and the partition (2) are driven by a gear train.

2. The high-yield MTBE catalytic distillation device according to claim 1, characterized in that: The cross-sectional area of ​​the guide fold plate (4) gradually increases from top to bottom.

3. The high-yield MTBE catalytic distillation device according to claim 2, characterized in that: The bottom of the guide fold plate (4) is provided with symmetrically distributed elastic plates (401), and an expansion airbag (402) is fixedly connected between the symmetrically distributed elastic plates (401) on the same guide fold plate (4), and the expansion airbag (402) is filled with heat-sensitive gas.

4. The high-yield MTBE catalytic distillation device according to claim 1, characterized in that: The storage module (3) comprises an outer shell (31), the outer shell (31) being rotatably connected to the fixed shell (1), the outer shell (31) being fixedly connected to circumferentially distributed connecting columns (33) and symmetrically distributed filter screens (34), the symmetrically distributed filter screens (34) on the same outer shell (31) being located between the circumferentially distributed connecting columns (33), the back sides of the symmetrically distributed filter screens (34) being fixedly connected to circumferentially distributed fixing sleeves (341), the fixing sleeves (341) being fixedly connected to adjacent connecting columns (33) ), all the connecting columns (33) on the same outer shell (31) are fixedly connected to the inner shell (32), the inner shell (32) is fixedly connected to the partition (2), the filter screen (34) is slidably connected to the adjacent inner shell (32), the outer shell (31) is provided with discharge ports (311) evenly distributed in the circumferential direction, the inner shell (32) is provided with a fixing component for preventing the catalyst from rolling, and the outer shell (31) is provided with a replacement mechanism for replacing the catalyst in the adjacent storage module (3).

5. The high-yield MTBE catalytic distillation device according to claim 4, characterized in that: The fixing assembly comprises symmetrically distributed sliding rings (35), the symmetrically distributed sliding rings (35) are all slidably connected to the adjacent inner shells (32), the filter screen (34) is made of elastic metal material, the sliding ring (35) is used to squeeze the adjacent filter screen (34) to move, the inner shell (32) is rotatably connected with a transmission gear (351), and the sliding ring (35) is fixedly connected with a rack meshing with the adjacent transmission gear (351).

6. The high-yield MTBE catalytic distillation device according to claim 5, characterized in that: The replacement mechanism comprises a first hydraulic telescopic rod (36) uniformly distributed in the circumferential direction, the first hydraulic telescopic rod (36) being fixedly connected to the outer shell (31), and the first hydraulic telescopic rod (36) corresponding to the discharge port (311) one by one, a second blocking plate (361) being fixedly connected to the telescopic end of the first hydraulic telescopic rod (36), the second blocking plate (361) being slidably connected to the adjacent outer shell (31), the second blocking plate (361) being used to block the adjacent discharge port (311), the inner shell (32) being fixedly connected to and in communication with a feed head (321) uniformly distributed in the circumferential direction, the feed head (321) being slidably connected to the first blocking plate (322), and a tension spring being installed between the two, the first blocking plate (322) being used to block the feed head (321) and squeeze the adjacent sliding ring (35) to move, and a driving component for driving the first blocking plate (322) to move is arranged in the fixed shell (1).

7. The high-yield MTBE catalytic distillation device according to claim 6, characterized in that: The driving assembly comprises a first hydraulic push rod (8), the first hydraulic push rod (8) being fixedly connected in the fixed shell (1), the telescopic end of the first hydraulic push rod (8) being rotatably connected to a spline rod (81), the spline rod (81) being fixedly connected to a feed end head (82) uniformly distributed in the circumferential direction, the feed end head (82) being used to squeeze the adjacent first blocking plate (322) to move, the feed head (321) being used to connect the feed end head (82) and the storage module (3), the partition (2) being fixedly connected to a fixing member (9), the fixing member (9) being rotatably connected to a spline sleeve (91), the spline sleeve (91) being spline-connected to the spline rod (81), and a rotating assembly being used to drive the spline rod (81) to rotate relative to the partition (2) is provided in the fixed shell (1).

8. The high-yield MTBE catalytic distillation device according to claim 7, characterized in that: The inner shell (32) is fixedly connected with second hydraulic telescopic rods (37) uniformly distributed in the circumferential direction, and a spring is installed between the telescopic end of the second hydraulic telescopic rod (37) and its fixed portion. The second hydraulic telescopic rod (37) and the first hydraulic telescopic rod (36) on the same storage module (3) correspond to each other one by one, and the corresponding second hydraulic telescopic rods (37) and the first hydraulic telescopic rod (36) are connected through a hose, and the feed end (82) is used to squeeze the telescopic end of the second hydraulic telescopic rod (37).

9. The high-yield MTBE catalytic distillation device according to claim 8, characterized in that: The rotating assembly comprises a second hydraulic push rod (92), the second hydraulic push rod (92) is fixedly connected to the fixed shell (1), the telescopic end of the second hydraulic push rod (92) is rotatably connected to an adjustment ring (93), the adjustment ring (93) is slidably connected to the fixed member (9), the adjustment ring (93) is provided with an inclined slide groove, and the spline sleeve (91) is provided with a protrusion sliding along the inclined slide groove on the adjustment ring (93).

10. The high-yield MTBE catalytic distillation device according to claim 9, characterized in that: It also includes ventilation heads (10) distributed vertically at intervals, the ventilation heads (10) being fixedly connected to and in communication with the fixed shell (1), the fixed shell (1) being provided with discharge grooves (104) distributed vertically at intervals, the number of the discharge grooves (104) corresponding one-to-one to the number of the storage modules (3), the ventilation heads (10) corresponding one-to-one to the discharge grooves (104), the discharge grooves (104) being in communication with the discharge port (311) of the adjacent outer shell (31) and the adjacent ventilation heads (10), and the fixed shell (1) being fixedly connected to and in communication with a discharge head (11) near the adjacent discharge groove (104).

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