Methanol recovery mechanism for five-tower rectification scheme

Abstract

The utility model discloses a methanol recovery mechanism for a five-tower rectification scheme, which comprises a machine body, a recovery pipe is arranged at the lower end of the machine body, and a power mechanism is arranged on one side of the recovery pipe. According to the utility model, methanol rectified by the five-tower rectification device can be filtered, the recovered methanol is prevented from containing impurities, the rectification quality of methanol is effectively ensured, meanwhile, the filter screen can be prevented from being blocked, and the recovery efficiency of methanol is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of five-tower distillation of methanol, in particular to a methanol recovery mechanism for a five-tower distillation scheme. Background Art

[0002] The main task of the methanol synthesis section is to synthesize crude methanol from the synthesis gas from the coal-based methanol purification section under certain pressure, temperature and catalyst conditions. The crude methanol needs to be further distilled through five-tower distillation to obtain refined methanol. Compared with the traditional three-tower distillation scheme, the five-tower distillation scheme can increase the output of refined methanol and reduce the energy consumption of methanol distillation.

[0003] The existing five-tower distillation device cannot filter methanol during the methanol distillation recovery process, resulting in impurities in the methanol, thereby reducing the quality of methanol distillation, so it needs to be improved. Utility Model Content

[0004] The utility model aims to overcome the problem that the existing five-tower distillation device cannot filter methanol during the methanol recovery process, resulting in impurities in the recovered methanol, thereby reducing the quality of methanol distillation, and proposes a methanol recovery mechanism for a five-tower distillation scheme.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A methanol recovery mechanism for a five-tower distillation scheme comprises a body, a recovery pipe is arranged at the lower end of the body, and a power mechanism is arranged on one side of the recovery pipe;

[0007] A filter frame is provided in the recovery pipe, and a filter screen is provided in the filter frame. One side of the filter frame passes through one side of the recovery pipe and is provided with a connecting plate. The connecting plate is detachably connected to one side of the recovery pipe. A driving rod is provided on the power mechanism, and the driving rod is rotatably connected in the recovery pipe. A driving bevel gear is fixedly sleeved on the middle part of the driving rod, and a transmission bevel gear is meshed on one side of the lower end of the driving bevel gear. A rotating shaft is fixed to the middle part of the lower end of the transmission bevel gear, and a cleaning plate is fixed to the lower end of the rotating shaft. Brushes are provided on both sides of the lower end of the cleaning plate, and the two brushes respectively abut against both sides of the upper end of the filter screen.

[0008] Preferably, in order to provide power for the rotation of the driving rod, the power mechanism includes a fixing frame fixedly connected to one side of the recovery pipe, a servo motor is fixedly installed in the fixing frame, and one end of the driving rod passes through one side of the recovery pipe and is fixedly connected to the end of the output shaft of the servo motor.

[0009] Preferably, in order to fix the connecting plate and the filter frame in the recovery pipe, screws are provided through the four corners of the connecting plate, one end of the four screws is fixedly connected to one side of the recovery pipe, nuts are threaded on the four screws, and the four nuts are respectively abutted against the four corners of one side of the connecting plate.

[0010] Preferably, in order to seal the connection between the connecting plate and the recovery pipe, a sealing gasket is provided on the other side of the connecting plate, the sealing gasket abuts against one side of the recovery pipe, and a handle is fixed on one side of the connecting plate.

[0011] Preferably, in order to support the filter frame and prevent methanol from impacting and deforming the filter frame, four limiting wheels are symmetrically rotatably connected on the relative inner walls of the recovery tube, and the four limiting wheels respectively abut against the four corners of the lower end of the filter frame, and the other side of the lower end of the filter frame abuts against a limiting block, and the limiting block is fixedly connected to the inner wall on the other side of the recovery tube.

[0012] Preferably, in order to protect the driving bevel gear and the transmission bevel gear from methanol corrosion, a waterproof box is rotatably sleeved in the middle of the driving rod, the driving bevel gear and the transmission bevel gear are both located in the waterproof box, the rotating shaft is rotatably sleeved in the middle of the lower end of the waterproof box, and fixing rods are fixed at the four corners on both sides of the waterproof box, the other ends of the eight fixing rods are respectively fixedly connected to the relative inner walls of the recovery pipe, and a conical block is provided at the upper end of the waterproof box.

[0013] Preferably, in order to support the machine body and improve the stability of the machine body, a valve is provided on the upper part of the recovery pipe, a fixing plate is fixedly sleeved on the lower part of the machine body, and support rods are fixed to the four corners of the lower end of the fixing plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Through the use of filter racks and filter screens, the methanol recovered after distillation in the five-tower distillation unit can be filtered to avoid impurities in the recovered methanol, effectively ensuring the distillation quality of methanol;

[0016] 2. The use of power mechanism, cleaning plate and brush can clean the filter during the process of filtering methanol, avoiding clogging of the filter and effectively ensuring the recovery efficiency of methanol;

[0017] In summary, the utility model can filter the methanol after distillation in the five-tower distillation device, avoid impurities in the recovered methanol, effectively ensure the distillation quality of the methanol, and at the same time avoid clogging of the filter screen to ensure the recovery efficiency of the methanol. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a connection structure diagram of a methanol recovery mechanism for a five-tower distillation solution proposed by the utility model;

[0019] Figure 2 A schematic diagram of the internal structure of a recovery pipe of a methanol recovery mechanism for a five-tower distillation scheme proposed in the utility model;

[0020] Figure 3 This is an enlarged view of point A of a methanol recovery mechanism for a five-tower distillation scheme proposed in the utility model;

[0021] Figure 4 This is an enlarged view of point B of the methanol recovery mechanism for a five-tower distillation solution proposed in the utility model.

[0022] In the figure: 1 body, 2 recovery pipe, 3 valve, 4 fixing frame, 5 servo motor, 6 driving rod, 7 driving bevel gear, 8 transmission bevel gear, 9 rotating shaft, 10 cleaning plate, 11 brush, 12 waterproof box, 13 conical block, 14 fixing rod, 15 filter frame, 16 connecting plate, 17 handle, 18 sealing gasket, 19 screw, 20 nut, 21 limiting wheel, 22 limiting block, 23 fixing plate, 24 supporting rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1-4A methanol recovery mechanism for a five-tower distillation scheme includes a body 1, a fixed plate 23 is fixedly sleeved at the lower part of the body 1, and support rods 24 are fixed at the four corners of the lower end of the fixed plate 23. The body 1 can be supported by the four support rods 24 and the fixed plate 23 to keep the body 1 stable. The body 1 adopts a five-tower three-effect reverse coupling methanol distillation process, and a medium-pressure tower system is added. The hot gas at the top of each tower is used as the heat source of the reboiler at the bottom of the next distillation tower, saving steam for distilling methanol. A recovery pipe 2 is arranged at the lower end of the body 1, and a filter rack 15 is arranged in the recovery pipe 2. A filter screen is arranged in the filter rack 15. One end of the recovery pipe 2 is connected to a matching methanol recovery device. The methanol after distillation by the body 1 will be transported to the methanol recovery device through the recovery pipe 2. The filter frame 15 is installed in the recovery pipe 2, and the filter screen can be installed in the recovery pipe 2. The filter screen can filter the methanol passing through the recovery pipe 2 to prevent the methanol after distillation from containing impurities that affect the distillation recovery quality of the methanol, effectively ensuring the distillation recovery quality of the methanol. Four limiting wheels 21 are symmetrically rotatably connected on the relative inner walls of the recovery pipe 2. The four limiting wheels 21 respectively abut against the four corners of the lower end of the filter frame 15, and the other side of the lower end of the filter frame 15 abuts against the limiting block 22. The limiting block 22 is fixedly connected to the inner wall of the other side of the recovery pipe 2. The four limiting wheels 21 can support the four corners of the lower end of the filter frame 15 to prevent the filter frame 15 from being deformed by the impact of methanol. The limiting block 22 can support the front end of the filter frame 15 to improve the impact resistance of the filter frame 15.

[0025] Reference Figure 1 , 24. One side of the filter frame 15 passes through one side of the recovery pipe 2 and is provided with a connecting plate 16. The connecting plate 16 is detachably connected to one side of the recovery pipe 2. The filter frame 15 and the filter screen can be conveniently disassembled and assembled from the recovery pipe 2 through the connecting plate 16. The filter frame 15 and the filter screen can be fixedly installed in the recovery pipe 2 by fixing the connecting plate 16 on the recovery pipe 2. A sealing gasket 18 is provided on the other side of the connecting plate 16. The sealing gasket 18 abuts against one side of the recovery pipe 2. The connection between the connecting plate 16 and the recovery pipe 2 can be sealed by the sealing gasket 18 to avoid leakage at the connection between the connecting plate 16 and the recovery pipe 2. A handle 17 is fixed on one side of the connecting plate 16. The handle 17 can conveniently drive the connecting plate 16 so that the connecting plate 16 can be more convenient to move when taking. For convenience, screws 19 are provided through the four corners of the connecting plate 16, one ends of the four screws 19 are fixedly connected to one side of the recovery pipe 2, nuts 20 are threadedly sleeved on the four screws 19, and the four nuts 20 respectively abut against the four corners of one side of the connecting plate 16, an external thread is provided on the surface of the screw 19, and an internal thread is provided in the nut 20. The connecting plate 16 can be fixed to the recovery pipe 2 through the structure of the four nuts 20 and the four screws 19, and a valve 3 is provided on the upper part of the recovery pipe 2. The valve 3 is connected to the supporting parts for stable operation, and can be programmed for automatic operation. The valve 3 is used to control the switch of the recovery pipe 2. When cleaning the filter screen, the recovery pipe 2 can be closed through the valve 3 to prevent the recovery pipe 2 from leaking when the filter screen is removed from the recovery pipe 2.

[0026] Reference Figure 2 , 3A power mechanism is provided on one side of the recovery pipe 2, and a driving rod 6 is provided on the power mechanism. The driving rod 6 is rotatably connected to the recovery pipe 2. The operation of the power mechanism can drive the driving rod 6 to rotate, and the driving rod 6 will drive the supporting components in the recovery pipe 2 to operate. The power mechanism includes a fixing frame 4 fixedly connected to one side of the recovery pipe 2, and a servo motor 5 is fixedly installed in the fixing frame 4. One end of the driving rod 6 passes through one side of the recovery pipe 2 and is fixedly connected to the end of the output shaft of the servo motor 5. The servo motor 5 can be fixedly installed on the recovery pipe 2 through the fixing frame 4. The servo motor 5 is connected to the supporting components for stable operation, and can be programmed for automatic operation. The operation of the servo motor 5 will drive the driving rod 6 to rotate, and the driving rod 6 A driving bevel gear 7 is fixedly sleeved in the middle part, and a transmission bevel gear 8 is meshed on one side of the lower end of the driving bevel gear 7. The rotation of the driving rod 6 will drive the driving bevel gear 7 to rotate, and the rotation of the driving bevel gear 7 will push the transmission bevel gear 8 to rotate. A rotating shaft 9 is fixed in the middle part of the lower end of the transmission bevel gear 8, and a cleaning plate 10 is fixed at the lower end of the rotating shaft 9. Brushes 11 are arranged on both sides of the lower end of the cleaning plate 10, and the two brushes 11 are respectively in contact with both sides of the upper end of the filter screen. The rotation of the transmission bevel gear 8 will drive the rotating shaft 9 to rotate, and the rotating shaft 9 will drive the cleaning plate 10 to operate, and the cleaning plate 10 will drive the two brushes 11 to operate, and the two brushes 11 will clean the filter screen to prevent the filter screen from being blocked and affecting the recovery efficiency of methanol.

[0027] Reference Figure 2 , 3 The middle part of the driving rod 6 is rotatably sleeved with a waterproof box 12, and the driving bevel gear 7 and the transmission bevel gear 8 are both located in the waterproof box 12. The driving bevel gear 7 and the transmission bevel gear 8 can be protected by the waterproof box 12 to prevent methanol from corroding the driving bevel gear 7 and the transmission bevel gear 8. The rotating shaft 9 is rotatably sleeved in the middle part of the lower end of the waterproof box 12. Fixed rods 14 are fixed on the four corners of both sides of the waterproof box 12. The other ends of the eight fixed rods 14 are respectively fixedly connected to the relative inner walls of the recovery pipe 2. A conical block 13 is provided at the upper end of the waterproof box 12. The waterproof box 12 can be fixed in the recovery pipe 2 by the eight fixed rods 14. The methanol can be prevented from accumulating on the upper end of the waterproof box 12 by the conical block 13.

[0028] In the utility model, when in use: the body 1 transports the methanol after distillation to the supporting equipment through the recovery pipe 2, the methanol passing through the recovery pipe 2 will be filtered through the filter screen in the filter frame 15 to prevent impurities in the methanol, and at the same time the supporting control equipment controls the servo motor 5 to operate, the servo motor 5 drives the driving rod 6 to rotate, the driving rod 6 drives the driving bevel gear 7 to rotate, the driving bevel gear 7 drives the transmission bevel gear 8 to rotate, the transmission bevel gear 8 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the cleaning plate 10 to operate, the cleaning plate 10 drives the brush 11 to operate, the brush 11 cleans the filter screen to prevent the filter screen from being blocked and affecting the recovery efficiency of methanol.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A methanol recovery mechanism for a five-tower distillation scheme, comprising a body (1), characterized in that: A recovery pipe (2) is provided at the lower end of the machine body (1), and a power mechanism is provided on one side of the recovery pipe (2); A filter frame (15) is arranged in the recovery pipe (2), and a filter screen is arranged in the filter frame (15). One side of the filter frame (15) passes through one side of the recovery pipe (2) and is provided with a connecting plate (16). The connecting plate (16) is detachably connected to one side of the recovery pipe (2). A driving rod (6) is arranged on the power mechanism. The driving rod (6) is rotatably connected in the recovery pipe (2). A driving bevel gear (7) is fixedly sleeved in the middle of the driving rod (6). A transmission bevel gear (8) is meshed on one side of the lower end of the driving bevel gear (7). A rotating shaft (9) is fixed in the middle of the lower end of the transmission bevel gear (8). A cleaning plate (10) is fixed at the lower end of the rotating shaft (9). Brushes (11) are arranged on both sides of the lower end of the cleaning plate (10). The two brushes (11) respectively abut against both sides of the upper end of the filter screen.

2. A methanol recovery mechanism for a five-tower distillation scheme according to claim 1, characterized in that: The power mechanism comprises a fixing frame (4) fixedly connected to one side of the recovery pipe (2), a servo motor (5) being fixedly installed in the fixing frame (4), and one end of the driving rod (6) passing through one side of the recovery pipe (2) and fixedly connected to the end of the output shaft of the servo motor (5).

3. A methanol recovery mechanism for a five-tower distillation scheme according to claim 1, characterized in that: Screw rods (19) are provided through the four corners of the connecting plate (16), one end of each of the four screw rods (19) is fixedly connected to one side of the recovery pipe (2), nuts (20) are threadedly sleeved on the four screw rods (19), and the four nuts (20) are respectively pressed against the four corners of one side of the connecting plate (16).

4. A methanol recovery mechanism for a five-tower distillation scheme according to claim 1, characterized in that: A sealing gasket (18) is provided on the other side of the connecting plate (16), and the sealing gasket (18) contacts one side of the recovery pipe (2). A handle (17) is fixed on one side of the connecting plate (16).

5. A methanol recovery mechanism for a five-tower distillation scheme according to claim 1, characterized in that: Four limiting wheels (21) are symmetrically rotatably connected to the opposite inner walls of the recovery pipe (2), and the four limiting wheels (21) respectively abut against the four corners of the lower end of the filter frame (15). The other side of the lower end of the filter frame (15) abuts against a limiting block (22), and the limiting block (22) is fixedly connected to the inner wall on the other side of the recovery pipe (2).

6. A methanol recovery mechanism for a five-tower distillation scheme according to claim 1, characterized in that: The middle part of the driving rod (6) is rotatably sleeved with a waterproof box (12), the driving bevel gear (7) and the transmission bevel gear (8) are both located in the waterproof box (12), the rotating shaft (9) is rotatably sleeved in the middle part of the lower end of the waterproof box (12), the four corners on both sides of the waterproof box (12) are fixed with fixed rods (14), the other ends of the eight fixed rods (14) are respectively fixedly connected to the opposite inner walls of the recovery pipe (2), and the upper end of the waterproof box (12) is provided with a conical block (13).

7. A methanol recovery mechanism for a five-tower distillation scheme according to claim 1, characterized in that: A valve (3) is provided at the upper portion of the recovery pipe (2), a fixing plate (23) is fixedly sleeved at the lower portion of the machine body (1), and support rods (24) are fixed at the four corners of the lower end of the fixing plate (23).

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