Methanol-to-olefin reaction equipment

Abstract

Relating to the technical field of chemical reaction devices, the invention discloses a methanol-to-olefin reaction device, which comprises a reactor, a cyclone separator, an exhaust pipe, a fan, a linkage assembly and a pulse blowing assembly. The bottom of the reactor is provided with reactant and catalyst feed ports, and the top is connected with a cyclone separator through a pipeline; the bottom of the cyclone separator and the reactor form a closed loop through a recovery pipe, and the top of the cyclone separator is connected with an auxiliary cylinder through a communicating pipe. The exhaust pipe is obliquely arranged on the outer side of the auxiliary pipe, a filter plate, a rotating shaft and a scraper are arranged in the exhaust pipe, fan power is transmitted to the rotating shaft through the linkage assembly to drive the scraper to rotate, and catalyst particles attached to the filter plate are dynamically cleaned. The pulse blowing assembly blows back the filter plate through periodic high-pressure airflow, and is combined with scraper cleaning to prevent blockage. Through closed-loop recovery, dynamic self-cleaning and mechanical linkage design, the catalyst utilization rate is increased, the gas product purity is guaranteed, and equipment abrasion is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical reaction devices, in particular to methanol to olefins reaction equipment. Background Art

[0002] Methanol to olefins technology is one of the core processes in coal chemical industry and natural gas chemical industry. It efficiently converts methanol into low-carbon olefins such as ethylene and propylene through a fluidized bed reactor, and has important industrial value.

[0003] During this reaction, the gas-solid two-phase mixture flows through a cyclone separator to separate the catalyst from the gaseous products. However, the existing technology still has the following significant problems: the capture efficiency of traditional cyclone separators for catalysts with smaller particle sizes is significantly reduced, causing these particles to escape from the top outlet along with the gaseous products, resulting in continuous catalyst loss, increasing raw material costs and subsequent recovery loads. At the same time, the escaped catalyst remains in the gaseous products, not only reducing the purity of the olefins but also causing wear and blockage in downstream pipelines, compression equipment, and distillation units, affecting the overall process stability. To address this issue, we propose a methanol to olefins reaction device. Summary of the Invention

[0004] The object of the present invention is to provide a methanol to olefins reaction device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a methanol to olefins reaction equipment, comprising: a reactor, a reactant feed port and a catalyst feed port are provided at the bottom, a cyclone separator is fixedly connected to the top through a pipeline, a recovery pipe is fixedly provided at the bottom outlet of the cyclone separator, the recovery pipe outlet is connected to the interior of the reactor, the top outlet of the cyclone separator is fixedly connected to an auxiliary tube through a connecting pipe, and the bottom outlet of the auxiliary tube is circulated and connected to the connecting tube through the auxiliary pipe; an exhaust pipe is obliquely arranged on the outside of the auxiliary pipe, a filter plate is fixedly provided in the exhaust pipe, a rotating shaft is rotatably provided at the center of the filter plate, a scraper is fixedly provided on the outside of the rotating shaft, and the bottom of the scraper is in contact with the filter plate; a fan is provided in the connecting pipe and fixed by a mounting frame; a linkage assembly is provided in the auxiliary tube, for transmitting the power of the fan to the rotating shaft; a pulse blowing assembly is provided behind the filter plate, for removing the catalyst attached to the filter plate by airflow.

[0006] Preferably, the linkage assembly includes a first bevel gear and a second bevel gear that mesh with each other, the first bevel gear is fixedly connected to the fixed shaft of the fan, and the second bevel gear is fixedly connected to the rotating shaft.

[0007] Preferably, the pulse blowing assembly includes multiple air cylinders, which are fixed in a fixed frame in the exhaust pipe. A conical air nozzle is provided at one end of the air cylinder close to the filter plate. A piston plate is slidingly provided in the air cylinder. A piston rod is fixed on the side of the piston plate away from the filter plate. The end of the piston rod is connected to a rotatable movable shaft, which is linked to the rotating shaft through a fixed cylinder, and the fixed cylinder is coaxially fixed to the rotating shaft.

[0008] Preferably, a slider is provided for sliding inside the fixed cylinder, and the slider is coaxially connected to the movable shaft through a connecting rod, the slider is rotatably connected to the connecting rod, and the movable shaft is coaxially fixed to the connecting rod; a fixed tube is fixed inside the exhaust pipe, and two groups of unidirectional spiral grooves are provided on the inner side of the fixed tube, and the angle between the starting points of the two groups of spiral grooves is 180°; a fixed block is fixed at the connection between the connecting rod and the movable shaft, and horizontal grooves and vertical grooves are symmetrically provided on the outer side of the fixed block, and pressure rods are slidably provided in the horizontal grooves and the vertical grooves; the outer end of the pressure rod in the horizontal groove is inserted into the spiral groove for sliding cooperation; symmetrically distributed vertical track grooves are also provided on the inside of the fixed tube, and the depth of the track groove is less than that of the spiral groove, and the upper and lower ends are respectively connected to the starting point and end point of the spiral groove; a guide groove is provided between the top of the track groove and the end point of the spiral groove, for guiding the pressure rod to slide from the spiral groove into the track groove; limit components are provided in the horizontal groove and the vertical groove to limit the position of the pressure rod.

[0009] Preferably, a first compression spring is provided on the top of the slider, and the first compression spring connects the slider and the top of the fixed tube; a symmetrically distributed insert and a second compression spring are provided on the outside of the connecting rod, and the insert is slidably arranged in a receiving groove arranged on the outside of the connecting rod, and the second compression spring is fixed between the insert and the receiving groove, and the outside of the insert cooperates with the limiting groove arranged on the inside of the fixed tube to control the linkage between the connecting rod and the fixed tube.

[0010] Preferably, the inner end of the pressure rod is conical, and when the pressure rod in the vertical groove moves upward, it triggers the release of the fillet, embedding the fillet into the limiting groove, so that the connecting rod and the fixed cylinder rotate synchronously, and at the same time squeezes the pressure rod in the horizontal groove to reinsert it into the spiral groove, thereby driving the slider to reciprocate through the spiral groove.

[0011] Preferably, the tail ends of the connecting pipe and the auxiliary pipe are both inclined to guide the catalyst to flow back to the reactor.

[0012] Preferably, a third compression spring is provided in the air cylinder, and two ends of the third compression spring are respectively fixedly connected to the piston plate and the top of the air cylinder to assist the piston plate in resetting.

[0013] Preferably, the limiting assembly includes a limiting shaft and a fourth compression spring. A placement groove is provided on the inner side of the horizontal groove and the vertical groove. The limiting shaft is slidably arranged in the placement groove. The fourth compression spring is arranged in the placement groove, and the two ends are respectively fixed to the placement groove and the limiting shaft. A sink groove is provided on the outer side of the pressure rod to cooperate with the outer end of the limiting shaft. The outer end of the limiting shaft and the sink groove are both arc-shaped. The limiting shaft cooperates with the sink groove through the fourth compression spring to stabilize the position of the pressure rod.

[0014] Preferably, a sliding groove is fixedly provided in both the horizontal groove and the vertical groove, and a protrusion cooperating with the sliding groove is provided on the outer side of the pressure rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention utilizes a coordinated design of a cyclone separator, auxiliary drum, and inclined reflux duct, combined with the dynamic cleaning capabilities of a filter plate scraper and pulsed air blowing assembly, to enhance the capture efficiency of fine catalyst particles and reduce catalyst escape with gaseous products. This improvement effectively reduces continuous catalyst loss, saves raw material costs, and reduces the load on subsequent recovery systems.

[0017] 2. The filter plates' fine filtration and pulsed airflow cleaning mechanism efficiently separate catalyst residues from gaseous products, ensuring high purity of olefin products such as ethylene and propylene. Furthermore, this reduces wear and clogging of downstream pipelines, compression equipment, and distillation units by escaping particles, improving overall process continuity and equipment lifespan.

[0018] 3. The linkage assembly transmits fan power to the scraper and pulse air blowing assembly, achieving real-time scraping of catalyst from the filter plate surface and back-flushing of air, forming a dynamic self-cleaning cycle. This design eliminates the need for frequent downtime for cleaning, reduces maintenance costs, and ensures long-term stable operation of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the auxiliary cylinder of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the filter plate of the present invention;

[0022] Figure 4 This is a structural schematic diagram of the filter plate portion of the present invention from another perspective;

[0023] Figure 5 This is a schematic diagram of the structure of the fixed pipe part of the present invention;

[0024] Figure 6 Schematic diagram of the internal structure of the gas cylinder of the present invention;

[0025] Figure 7 This is a schematic cross-sectional view of the connecting rod structure of the present invention;

[0026] Figure 8 It is a partial cross-sectional schematic diagram of the internal structure of the fixed tube of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the guide groove portion of the present invention;

[0028] Figure 10 It is a partial cross-sectional schematic diagram of the fixing block portion of the present invention;

[0029] Figure 11 It is a structural schematic diagram of the pressure rod part of the present invention.

[0030] In the figure: 1-reactor; 2-reactant feed port; 3-catalyst feed port; 4-cyclone separator; 5-recovery pipe; 6-connecting pipe; 7-auxiliary cylinder; 8-exhaust pipe; 9-auxiliary pipe; 10-filter plate; 11-rotating shaft; 12-scraper; 13-fan; 14-linkage assembly; 15-pulse blowing assembly; 16-first bevel gear; 17-second bevel gear; 18-fixed shaft; 19-air cylinder; 20-piston plate; 21-piston rod; 22 , movable shaft; 23, fixed cylinder; 24, slider; 25, connecting rod; 26, fixed tube; 27, spiral groove; 28, fixed block; 29, horizontal groove; 30, vertical groove; 31, pressure rod; 32, track groove; 33, guide groove; 34, limiting assembly; 35, first compression spring; 36, molding; 37, second compression spring; 38, limiting groove; 39, third compression spring; 40, limiting shaft; 41, fourth compression spring; 42, sink groove; 43, slide groove; 44, protrusion. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0032] Example:

[0033] Please refer to Figures 1-11 The figure shows a methanol-to-olefins reaction equipment, comprising: a reactor 1, with a reactant feed port 2 and a catalyst feed port 3 provided at the bottom, the top of which is fixedly connected to a cyclone separator 4 via a pipeline, a recovery pipe 5 fixedly provided at the bottom outlet of the cyclone separator 4, the outlet of the recovery pipe 5 being connected to the interior of the reactor 1, the top outlet of the cyclone separator 4 being fixedly connected to an auxiliary cylinder 7 via a connecting pipe 6, the bottom outlet of the auxiliary cylinder 7 being cyclically connected to the connecting pipe 6 via an auxiliary pipe 9; the recovery pipe 5 at the bottom of the cyclone separator 4 directly returns the captured catalyst to the reactor 1, forming a closed-loop circulation and reducing catalyst waste. At the same time, the auxiliary cylinder 7 is cyclically connected to the connecting pipe 6 via the auxiliary pipe 9 to further separate the residual catalyst;

[0034] Exhaust pipe 8 is tilted and positioned outside auxiliary pipe 9. A filter plate 10 is fixedly mounted inside exhaust pipe 8. A rotating shaft 11 is mounted at the center of filter plate 10. A scraper 12 is fixed to the outside of shaft 11. The bottom of scraper 12 is in contact with filter plate 10. Driven by shaft 11, scraper 12 dynamically removes catalyst particles adhering to the surface, preventing clogging. A fan 13 is located within connecting pipe 6 and secured by a mounting bracket. A linkage assembly 14, located within auxiliary tube 7, transmits power from fan 13 to shaft 11. A pulsed airflow assembly 15, located behind filter plate 10, removes catalyst adhering to filter plate 10 through airflow. This pulsed airflow periodically back-blows filter plate 10, thoroughly removing fine particles and ensuring the purity of the gas product. The entire system achieves efficient catalyst recovery, product purification, and equipment self-cleaning through the synergistic effects of multiple structures.

[0035] Some embodiments of the present application are described in detail below with reference to the accompanying drawings:

[0036] Please refer to Figures 1-11 In this embodiment, the coordinated design of the cyclone separator 4, auxiliary cylinder 7, and inclined reflux duct, combined with the dynamic cleaning functions of the filter plate 10, scraper 12, and pulsed air blowing assembly 15, improves the capture efficiency of fine catalyst particles and reduces catalyst escape with gaseous products. This improvement effectively reduces the continuous loss of catalyst, saves raw material costs, and reduces the load on the subsequent recovery system.

[0037] Among them, such as Figure 4 As shown, the linkage assembly 14 includes a first bevel gear 16 and a second bevel gear 17 that mesh with each other. The first bevel gear 16 is fixedly connected to the fixed shaft 18 of the fan 13, and the second bevel gear 17 is fixedly connected to the rotating shaft 11. When the fan 13 is running, its power is efficiently transmitted to the rotating shaft 11 through the gear meshing, driving the scraper 12 to rotate. The helical tooth design of the bevel gears can adapt to the transmission requirements of different axial directions, reducing power loss while ensuring the stability and continuity of power transmission. This mechanical linkage method does not require an additional power source, simplifies the system structure, and reduces energy consumption.

[0038] In addition, if Figure 5 and Figure 6As shown, the pulse air blowing assembly 15 includes multiple air cylinders 19, which are fixed to a fixed frame within the exhaust pipe 8. A conical air nozzle is installed at the end of the air cylinder 19 near the filter plate 10. A piston plate 20 slides inside the air cylinder 19. A piston rod 21 is fixed to the side of the piston plate 20 away from the filter plate 10. The end of the piston rod 21 is connected to a rotatable movable shaft 22. The movable shaft 22 is linked to the rotating shaft 11 through a fixed cylinder 23. The fixed cylinder 23 is coaxially fixed to the rotating shaft 11. When the rotating shaft 11 rotates, the fixed cylinder 23 drives the movable shaft 22 to rotate periodically, driving the piston plate 20 to reciprocate within the air cylinder 19. When the piston plate 20 compresses the air in the air cylinder 19, the conical air nozzle releases a high-pressure pulsed airflow, which impacts the filter pores of the filter plate 10, preventing catalyst from clogging the pores and affecting filtration efficiency. A third compression spring 39 assists in the rapid reset of the piston plate 20, ensuring that the frequency of the pulse air blowing is synchronized with the cleaning action of the scraper 12. The radial air guide grooves of the conical air nozzle can evenly disperse the airflow, avoid local blockage and improve cleaning efficiency;

[0039] Furthermore, a slider 24 is provided in the fixed cylinder 23 for sliding, and the slider 24 is coaxially connected to the movable shaft 22 through a connecting rod 25. The slider 24 is rotatably connected to the connecting rod 25, and the movable shaft 22 is coaxially fixed to the connecting rod 25. A fixed tube 26 is fixed in the exhaust pipe 8, and two sets of unidirectional spiral grooves 27 are provided on the inner side of the fixed tube 26, and the angle between the starting points of the two sets of spiral grooves 27 is 180 degrees. A fixed block 28 is fixed at the connection between the connecting rod 25 and the movable shaft 22, and the outer side of the fixed block 28 is symmetrical. A horizontal groove 29 and a vertical groove 30 are provided, and a pressure rod 31 is slidably provided in each of the horizontal groove 29 and the vertical groove 30; the outer end of the pressure rod 31 in the horizontal groove 29 is inserted into the spiral groove 27 for sliding cooperation; the inner side of the fixed tube 26 is also provided with a symmetrically distributed vertical track groove 32, the depth of the track groove 32 is less than that of the spiral groove 27, and the upper and lower ends are respectively connected to the starting point and the end point of the spiral groove 27; a guide groove 33 is provided between the top of the track groove 32 and the end point of the spiral groove 27, for guiding the pressure rod 31 to slide from the spiral groove 27 into the track groove 32; A limit assembly 34 is provided in both the horizontal groove 29 and the vertical groove 30 for limiting the position of the pressure rod 31. When the shaft 11 rotates, the pressure rod 31 in the horizontal groove 29 moves upward along the spiral groove 27, thereby driving the fixed block 28 and the slider 24 to move upward with the connecting rod 25 at the same time; when the pressure rod 31 reaches the end of the spiral groove 27, it slides into the vertical track groove 32 through the guide groove 33. During this process, the pressure rod 31 in the horizontal groove 29 slides inward, and the pressure rod in the vertical groove 30 is squeezed by the tapered head. The rod 31 is pressed against the inner wall of the vertical groove 30, thereby triggering the downward movement of the pressure rod 31 inside the vertical groove 30. The pressure rod 31 in the vertical groove 30 gradually squeezes the molding 36 into the storage groove, and the molding 36 is separated from the limiting groove 38, so that the connecting rod 25 is temporarily separated from the fixed cylinder 23. Afterwards, under the action of the first compression spring 35 and the guidance of the track groove 32, the fixed block 28 and the slider 24 carry the connecting rod 25 to move downward quickly and reset at the same time, thereby driving the piston plate 20 to move downward through the piston rod 21, thereby achieving the blowing effect of the air cylinder 19. When the first compression spring 35 is fully reset, the compression rod 31 in the vertical slot 30 moves upward due to the collision with the top of the fixed cylinder 23, returning to the vertical slot 30, releasing the fillet 36, which then re-enters the limiting groove 38 of the fixed cylinder 23, allowing the connecting rod 25 and the fixed cylinder 23 to be reassembled and limited. At the same time, the upward-moving compression rod 31 in the vertical slot 30 squeezes the compression rod 31 in the transverse slot 29 through the conical head, forcing the compression rod 31 in the transverse slot 29 out and re-inserting it into the spiral slot 27, forming a periodic reciprocating motion. The limiting assembly 34 stabilizes the position of the compression rod 31 through the cooperation of the limiting shaft 40 and the sink 42, ensuring a precise motion trajectory.

[0040] At the same time, if Figure 7 、 Figure 8 and Figure 10As shown, a first compression spring 35 is provided at the top of the slider 24, connecting the slider 24 to the top of the fixed tube 23. A symmetrically distributed insert 36 and a second compression spring 37 are provided on the outside of the connecting rod 25. The insert 36 slides within a receiving groove provided on the outside of the connecting rod 25, and the second compression spring 37 is fixedly positioned between the insert 36 and the receiving groove. The outside of the insert 36 cooperates with a retaining groove 38 provided on the inside of the fixed tube 23 to control the linkage between the connecting rod 25 and the fixed tube 23, ensuring that the slider 24 quickly returns to its original position during reciprocating motion. Under the action of the second compression spring 37, the insert 36 on the outside of the connecting rod 25 can be retracted and inserted into the retaining groove 38 of the fixed tube 23, controlling the linkage or separation between the connecting rod 25 and the fixed tube 23. When the pressure rod 31 in the vertical slot 30 moves upward, the strip 36 is released and inserted into the limiting slot 38, causing the connecting rod 25 and the fixed cylinder 23 to rotate synchronously. After the pressure rod 31 in the horizontal slot 29 is reinserted into the spiral slot 27, the strip 36 is reset by the action of the second compression spring 37, maintaining the stability of the mechanical linkage. This design achieves automatic switching between power transmission and intermittent separation, optimizing the movement efficiency of the slider 24.

[0041] At the same time, if Figure 10 and Figure 11 As shown, the inner end of the pressure rod 31 is conical. When the pressure rod 31 in the vertical groove 30 moves upward, the release of the insert 36 is triggered, and the insert 36 is embedded in the limit groove 38, so that the connecting rod 25 and the fixed cylinder 23 rotate synchronously, and at the same time, the pressure rod 31 in the horizontal groove 29 is squeezed and reinserted into the spiral groove 27, thereby driving the slider 24 to reciprocate through the spiral groove 27; this mechanism converts the continuous rotation of the rotating shaft 11 into the periodic reciprocation of the slider 24, and combines the action of the pulse blowing component 15 to realize the coordinated operation of dynamic cleaning of the filter plate 10 and airflow backblowing, thereby significantly improving the catalyst separation efficiency.

[0042] It is worth noting that Figure 1 As shown, the tail ends of the connecting pipe 6 and the auxiliary pipe 9 are both inclined to guide the catalyst back to the reactor 1. The inclined design reduces the retention of the catalyst in the pipeline, avoids accumulation and blockage, and at the same time promotes the unseparated fine particles to re-enter the reactor 1 to participate in the circulation, further improving the catalyst utilization rate and reducing raw material loss.

[0043] In addition, if Figure 11As shown, the limiting assembly 34 includes a limiting shaft 40 and a fourth compression spring 41. Both the transverse groove 29 and the vertical groove 30 are provided with a placement groove. The limiting shaft 40 slides in the placement groove. The fourth compression spring 41 is provided in the placement groove, and its two ends are fixed to the placement groove and the limiting shaft 40 respectively. The outer side of the pressure rod 31 is provided with a recessed groove 42 that cooperates with the outer end of the limiting shaft 40. The outer end of the limiting shaft 40 and the recessed groove 42 are both arc-shaped. The limiting shaft 40 cooperates with the recessed groove 42 through the fourth compression spring 41 to stabilize the position of the pressure rod 31. Under the action of the fourth compression spring 41, the limiting shaft 40 is embedded in the recessed groove 42, locking the position of the pressure rod 31 and preventing it from accidentally falling out during operation. When the pressure rod 31 is moved by external force, the limiting shaft 40 is compressed into the placement groove under the action of the fourth compression spring 41, ensuring that the pressure rod 31 can slide smoothly.

[0044] The method of using this device is as follows:

[0045] First, methanol and catalyst enter the reactor 1 through the reactant feed port 2 and catalyst feed port 3 at the bottom of the reactor 1, respectively. Inside the reactor 1, methanol undergoes a chemical reaction under the action of the catalyst to produce light olefins such as ethylene and propylene, and simultaneously forms a gas-solid two-phase mixture, in which the solid contains unreacted catalyst particles;

[0046] Afterwards, the gas-solid mixture enters the cyclone separator 4 from the top of the reactor 1, where centrifugal force is used to achieve preliminary separation. Large catalyst particles are thrown toward the inner wall of the separator, settle along the wall to the bottom, and are directly returned to the reactor 1 through the recovery pipe 5, forming a closed-loop circulation. The separated gas (containing a small amount of fine catalyst particles) enters the connecting pipe 6 from the top of the cyclone separator 4 and flows to the auxiliary cylinder 7.

[0047] The gas enters the auxiliary cylinder 7 through the connecting pipe 6, and the residual catalyst is further separated under the action of gravity. The separated catalyst particles are returned to the reactor 1 through the auxiliary pipe 9 and the inclined reflux pipe to reduce retention and blockage. The remaining gas enters the exhaust pipe 8 and enters the subsequent fine purification process;

[0048] When the gas flows through the filter plate 10 in the exhaust pipe 8, the filter plate 10 intercepts the remaining fine catalyst particles; the catalyst particles will adhere to the outside of the filter plate 10; when the airflow flows through the connecting pipe 6, it drives the fan 13 in the connecting pipe 6 to rotate, and its fixed shaft 18 transmits power to the rotating shaft 11 through the meshing first bevel gear 16 and second bevel gear 17. The rotating shaft 11 drives the scraper 12 to rotate. Since the bottom of the scraper 12 is in contact with the filter plate 10, the scraper 12 can dynamically scrape off the catalyst particles attached to the surface to prevent the filter pores from being clogged;

[0049] During the rotation of the rotating shaft 11, the connecting rod 25 and the movable shaft 22 are driven by the fixed cylinder 23, and the pressure rod 31 in the transverse groove 29 moves upward in the spiral groove 27, driving the piston plate 20 to move upward in the cylinder 19. When the pressure rod 31 in the transverse groove 29 reaches the end of the spiral groove 27, it slides into the vertical track groove 32 through the guide groove 33, triggering the pressure rod 31 in the vertical groove 30 to move downward, squeezing the molding 36 so that the molding 36 is out of the limit groove 38, thereby temporarily separating the connecting rod 25 from the fixed cylinder 23. At this time, the rotation of the rotating shaft 11 no longer drives the connecting rod 25 to rotate together. The pressure rod 31 in the horizontal groove 29 is now in the vertical track groove 32. Under the action of the first compression spring 35, the slider 24 falls rapidly along the track groove 32, and cooperates with the third compression spring 39 to drive the piston plate 20 to move downward rapidly. The piston plate 20 compresses the air in the air cylinder 19, and the high-pressure air flow is ejected from the conical air nozzle to blow back the filter plate 10 in a pulse form to remove the stubborn particles in the filter holes, ensuring that the blowing frequency is synchronized with the cleaning action of the scraper 12.

[0050] When the first compression spring 35 is fully reset, the compression rod 31 in the vertical groove 30 collides with the top of the fixed cylinder 23. Under the action of the reaction force, the compression rod 31 returns to the vertical groove 30, releasing the fillet 36, which then re-inserts into the limit groove 38, restoring the mechanical linkage. During this process, the compression rod 31 in the vertical groove 30 squeezes the compression rod 31 in the transverse groove 29, pressing the compression rod 31 in the transverse groove 29 outward, thereby reinserting the compression rod 31 in the transverse groove 29 into the spiral groove 27.

[0051] Repeat the above steps to achieve coordination between the scraper 12 and the pulsed airflow, prevent the filter plate 10 from being blocked, ensure gas purity, promote efficient recovery of the catalyst, and reduce raw material loss.

[0052] Example 2: This embodiment further illustrates Example 1. Figure 3 As shown, the difference lies in the optimization of the internal structure of the gas cylinder 19;

[0053] Specifically, a third compression spring 39 is installed within the air cylinder 19. Its two ends are fixedly connected to the piston plate 20 and the top of the air cylinder 19, assisting the piston plate 20 in resetting. When the piston plate 20 is driven upward by the movable shaft 22, the third compression spring 39 stores energy, preparing for the next pulsed air blow. When the pressure rod 31 in the horizontal groove 29 enters the vertical track groove 32, the third compression spring 39 assists the first compression spring 35 in releasing energy, driving the slider 24 and the piston plate 20 to move downward simultaneously, completing the air blow. This design ensures a high frequency and stability of the air blow, ensuring a continuous and effective cleaning effect.

[0054] Example 3: This embodiment further illustrates Example 1. Figure 3 and Figure 4 As shown, the difference lies in the optimization of the pressure rod 31;

[0055] Specifically, a slide groove 43 is fixedly provided in both the horizontal groove 29 and the vertical groove 30 , and a protrusion 44 cooperating with the slide groove 43 is provided on the outside of the pressure rod 31 to ensure that the pressure rod 31 slides along the predetermined track, thereby improving the reliability and safety of the system operation.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A methanol to olefins reaction device, characterized in that: include: A reactor (1) is provided with a reactant feed port (2) and a catalyst feed port (3) at the bottom, and a cyclone separator (4) is fixedly connected to the top through a pipeline. A recovery pipe (5) is fixedly provided at the bottom outlet of the cyclone separator (4), and the outlet of the recovery pipe (5) is communicated with the interior of the reactor (1). The top outlet of the cyclone separator (4) is fixedly connected to an auxiliary cylinder (7) through a connecting pipe (6), and the bottom outlet of the auxiliary cylinder (7) is cyclically communicated with the connecting pipe (6) through an auxiliary pipe (9); An exhaust pipe (8) is obliquely arranged outside the auxiliary pipe (9), a filter plate (10) is fixedly arranged inside the exhaust pipe (8), a rotating shaft (11) is rotatably arranged at the center of the filter plate (10), a scraper (12) is fixedly arranged outside the rotating shaft (11), and the bottom of the scraper (12) is in contact with the filter plate (10); A fan (13) is disposed in the communicating pipe (6) and fixed by a mounting frame; a linkage assembly (14), disposed in the auxiliary cylinder (7), for transmitting the power of the fan (13) to the rotating shaft (11); A pulse blowing assembly (15) is arranged behind the filter plate (10) and is used to remove the catalyst attached to the filter plate (10) through air flow.

2. A methanol to olefins reaction device according to claim 1, characterized in that: The linkage assembly (14) comprises a first bevel gear (16) and a second bevel gear (17) meshing with each other, the first bevel gear (16) being fixedly connected to a fixed shaft (18) of the fan (13), and the second bevel gear (17) being fixedly connected to the rotating shaft (11).

3. A methanol to olefins reaction device according to claim 2, characterized in that: The pulse blowing assembly (15) includes a plurality of air cylinders (19), the air cylinders (19) being fixed in a fixed frame in the exhaust pipe (8), a conical air nozzle being provided at one end of the air cylinder (19) close to the filter plate (10), a piston plate (20) being slidably provided in the air cylinder (19), a piston rod (21) being fixedly provided on the side of the piston plate (20) away from the filter plate (10), the end of the piston rod (21) being connected to a rotatable movable shaft (22), the movable shaft (22) being linked to the rotating shaft (11) through a fixed cylinder (23), and the fixed cylinder (23) being coaxially fixed to the rotating shaft (11).

4. The methanol to olefins reaction equipment according to claim 3, characterized in that: A slider (24) is provided in the fixed cylinder (23) for sliding movement. The slider (24) is coaxially connected to the movable shaft (22) through a connecting rod (25). The slider (24) is rotatably connected to the connecting rod (25). The movable shaft (22) is coaxially fixed to the connecting rod (25). A fixed tube (26) is fixed in the exhaust pipe (8). Two groups of unidirectional spiral grooves (27) are provided on the inner side of the fixed tube (26). The angle between the starting points of the two groups of spiral grooves (27) is 180°. A fixed block (28) is fixed at the connection between the connecting rod (25) and the movable shaft (22). A transverse groove (29) and a vertical groove (30) are symmetrically provided on the outer side of the fixed block (28). The transverse groove (29) and the vertical groove (30) are symmetrically provided on the outer side of the fixed block (28). A pressure rod (31) is slidingly provided in each groove (30); the outer end of the pressure rod (31) in the transverse groove (29) is inserted into the spiral groove (27) for sliding cooperation; the inner side of the fixed tube (26) is also provided with symmetrically distributed vertical track grooves (32), the depth of the track groove (32) is less than that of the spiral groove (27), and the upper and lower ends are respectively connected to the starting point and the end point of the spiral groove (27); a guide groove (33) is provided between the top of the track groove (32) and the end point of the spiral groove (27) for guiding the pressure rod (31) to slide from the spiral groove (27) into the track groove (32); a limit assembly (34) is provided in each of the transverse groove (29) and the vertical groove (30) for limiting the position of the pressure rod (31).

5. The methanol to olefins reaction equipment according to claim 4, characterized in that: A first compression spring (35) is provided on the top of the slider (24), and the first compression spring (35) connects the slider (24) and the top of the fixed cylinder (23); a symmetrically distributed fillet (36) and a second compression spring (37) are provided on the outside of the connecting rod (25), and the fillet (36) is slidably arranged in a receiving groove arranged on the outside of the connecting rod (25), and the second compression spring (37) is fixed between the fillet (36) and the receiving groove, and the outside of the fillet (36) cooperates with the limiting groove (38) arranged on the inside of the fixed cylinder (23) to control the linkage of the connecting rod (25) and the fixed cylinder (23).

6. The methanol to olefins reaction equipment according to claim 5, characterized in that: The inner end of the pressure rod (31) is tapered. When the pressure rod (31) in the vertical groove (30) moves upward, the release of the fillet (36) is triggered, and the fillet (36) is embedded in the limiting groove (38), so that the connecting rod (25) and the fixed cylinder (23) rotate synchronously, and at the same time, the pressure rod (31) in the horizontal groove (29) is squeezed and reinserted into the spiral groove (27), thereby driving the slider (24) to reciprocate through the spiral groove (27).

7. The methanol to olefins reaction equipment according to claim 1, characterized in that: The tail ends of the connecting pipe (6) and the auxiliary pipe (9) are both arranged at an angle to guide the catalyst to flow back to the reactor (1).

8. The methanol to olefins reaction equipment according to claim 3, characterized in that: A third compression spring (39) is provided in the air cylinder (19), and two ends of the third compression spring (39) are respectively fixedly connected to the piston plate (20) and the top of the air cylinder (19), so as to assist the piston plate (20) in resetting.

9. The methanol to olefins reaction equipment according to claim 4, characterized in that: The limiting assembly (34) includes a limiting shaft (40) and a fourth compression spring (41). The inner sides of the transverse groove (29) and the vertical groove (30) are both provided with placement grooves. The limiting shaft (40) is slidably arranged in the placement groove. The fourth compression spring (41) is arranged in the placement groove, and its two ends are respectively fixed to the placement groove and the limiting shaft (40). The outer side of the pressure rod (31) is provided with a sinking groove (42) that cooperates with the outer end of the limiting shaft (40). The outer end of the limiting shaft (40) and the sinking groove (42) are both arc-shaped. The limiting shaft (40) cooperates with the sinking groove (42) through the fourth compression spring (41) to stabilize the position of the pressure rod (31).

10. The methanol to olefins reaction equipment according to claim 4, characterized in that: A sliding groove (43) is fixedly provided in both the transverse groove (29) and the vertical groove (30), and a protrusion (44) that matches the sliding groove (43) is provided on the outer side of the pressure rod (31).

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