Dehydrogenation reactor capable of increasing conversion rate

Abstract

The utility model discloses a dehydrogenation reactor capable of improving conversion rate, which belongs to the technical field of deoxidation reactors and comprises a treatment box, two groups of gas-guide tubes are symmetrically mounted at the upper end and the lower end in the treatment box, screws are mounted in the gas-guide tubes, and a guide rod is arranged on one side of each screw. By adopting a double-station structure, namely two sets of catalytic dehydrogenation mechanisms, when methanol is subjected to catalytic dehydrogenation, and a catalyst in one set of catalytic dehydrogenation sleeve needs to be replaced due to long-time use, the motor can rotate through the main gear, and the driving wheel drives the screw rod to rotate through the auxiliary gear; further, the reversing plate moves under the action of threads and the limitation of the guide rod, the position of the reversing plate in the gas guide pipe is adjusted, the flowing direction of methanol can be changed, then the two catalytic dehydrogenation mechanisms are alternately used, and continuous and efficient dehydrogenation treatment can still be performed on methanol when the filter element is replaced; the dehydrogenation efficiency and the use effect of the device are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of deoxygenation reactors, in particular to a dehydrogenation reactor capable of improving conversion rate. Background Art

[0002] Methyl formate can be produced through a variety of technical routes. Among them, methanol catalytic dehydrogenation is widely used due to its simple process flow, convenient operation, non-corrosiveness, and low equipment investment. The methanol catalytic dehydrogenation method requires a dehydrogenation reactor, and its general process is as follows: methanol enters the dehydrogenation reactor after vaporization and superheating, and reacts under the catalysis of the catalyst in the dehydrogenation reactor to generate methyl formate.

[0003] In the existing dehydrogenation reactor, when catalytically dehydrogenating methanol, the performance of the catalyst will deteriorate as the dehydrogenation time progresses, and it needs to be replaced. During the replacement process, the air intake needs to be cut off, which leads to the interruption of dehydrogenation. The raw gas cannot be continuously and efficiently dehydrogenated, resulting in poor use effect of the device. Therefore, a dehydrogenation reactor that can improve the conversion rate is urgently needed to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a dehydrogenation reactor which can improve the conversion rate.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A dehydrogenation reactor capable of improving conversion rate comprises a treatment box, wherein two groups of air guide pipes are symmetrically installed at the upper and lower ends of the treatment box, a screw is installed in the air guide pipe, a guide rod is arranged on one side of the screw, a reversing plate is sleeved on the screw and the guide rod, two groups of folding sealing sleeves are symmetrically installed on both sides of the reversing plate, a sealing strip is fixed on the outer side wall of the reversing plate, a transmission box is installed on one side wall of the treatment box, a motor is arranged in the transmission box, a main gear is fixed on the output shaft of the motor, and two groups of sub gears are symmetrically installed on both sides of the main gear.

[0007] Preferably, one end of the screw rod is rotatably connected to the inside of the air guide tube, the other end of the screw rod passes through the air guide tube, and the guide rod is welded to the inside of the air guide tube.

[0008] Preferably, the reversing plate is threadedly connected to the screw rod, the guide rod passes through the reversing plate, the outer diameter of the reversing plate is consistent with the inner diameter of the air guide tube, the folding sealing sleeve is fixedly connected to the reversing plate and the air guide tube, and a sealing ring is fixed on the outer side wall of the reversing plate.

[0009] Preferably, the transmission box is fixedly connected to the processing box, the motor is fixed to the inner wall of the transmission box by bolts, and the output shaft of the motor is fixedly connected to the main gear.

[0010] Preferably, the main gear is meshed with the auxiliary gear, and the other end of the screw is fixedly connected to a side wall of the auxiliary gear.

[0011] Preferably, two groups of catalytic sleeves are symmetrically installed between the air guide pipes, and the catalytic sleeves are filled with catalysts.

[0012] Preferably, an air intake pipe is fixed in the middle of the air guide pipe located at the top, and an exhaust pipe is fixed in the middle of the air guide pipe located at the bottom.

[0013] Beneficial technical effects of the utility model:

[0014] The utility model adopts a double-station structure, i.e. two sets of catalytic dehydrogenation mechanisms. During the catalytic dehydrogenation of methanol, when the catalyst in one set of catalytic dehydrogenation sleeve needs to be replaced due to long service time, the motor can be rotated through the main gear, and the driving wheel drives the screw to rotate through the auxiliary gear, so that the reversing plate moves under the action of the thread and the limit of the guide rod, and the position of the reversing plate in the air guide pipe is adjusted to change the flow direction of methanol, so that the two sets of catalytic dehydrogenation mechanisms are used alternately, and the methanol can still be continuously and efficiently dehydrogenated when the filter element is replaced, thereby effectively improving the dehydrogenation efficiency and use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of a dehydrogenation reactor capable of improving conversion rate according to the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of a treatment box in a preferred embodiment of a dehydrogenation reactor capable of improving conversion rate according to the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of a transmission box in a preferred embodiment of a dehydrogenation reactor capable of improving conversion rate according to the utility model;

[0018] Figure 4 It is a schematic diagram of the internal structure of the gas guide pipe in a preferred embodiment of a dehydrogenation reactor capable of improving the conversion rate according to the utility model;

[0019] Figure 5 The figure is a schematic diagram of the connection relationship among the reversing plate, the screw rod and the guide rod in a preferred embodiment of a dehydrogenation reactor capable of improving the conversion rate according to the present invention.

[0020] The following are the descriptions of the reference numerals:

[0021] 1. Treatment box; 2. Exhaust pipe; 3. Transmission box; 4. Intake pipe; 5. Air guide pipe; 6. Catalytic sleeve; 7. Main gear; 8. Sub gear; 9. Motor; 10. Screw; 11. Folding sealing sleeve; 12. Reversing plate; 13. Guide rod; 14. Sealing ring. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0023] like Figure 1-Figure 5 As shown, a dehydrogenation reactor capable of improving conversion rate provided in this embodiment comprises a treatment box 1, wherein two groups of air guide pipes 5 are symmetrically installed at the upper and lower ends of the treatment box 1, a screw 10 is installed in the air guide pipe 5, a guide rod 13 is arranged on one side of the screw 10, a reversing plate 12 is sleeved on the screw 10 and the guide rod 13, two groups of folding sealing sleeves 11 are symmetrically installed on both sides of the reversing plate 12, a sealing strip is fixed on the outer side wall of the reversing plate 12, a transmission box 3 is installed on one side wall of the treatment box 1, a motor 9 is arranged in the transmission box 3, a main gear 7 is fixed on the output shaft of the motor 9, and two groups of sub gears 8 are symmetrically installed on both sides of the main gear 7.

[0024] One end of the screw rod 10 is rotatably connected to the inside of the air guide tube 5 , and the other end of the screw rod 10 passes through the air guide tube 5 . The guide rod 13 is welded inside the air guide tube 5 , and the guide rod 13 can limit and guide the movement of the reversing plate 12 .

[0025] The reversing plate 12 is connected to the screw 10 by threads, and the guide rod 13 passes through the reversing plate 12. The outer diameter of the reversing plate 12 is consistent with the inner diameter of the air duct 5. The folding sealing sleeve 11 is fixedly connected to the reversing plate 12 and the air duct 5. A sealing ring 14 is fixed on the outer wall of the reversing plate 12. During the rotation of the screw 10, the reversing plate 12 moves in the air duct 5 under the action of the threads, thereby adjusting the flow direction of methanol. The sealing folding sleeve can wrap the screw 10 and the guide rod 13 on the one hand, and ensure the movement performance of the reversing plate 12 on the other hand. The sealing ring 14 can seal the connection between the reversing plate 12 and the air duct 5.

[0026] The transmission box 3 is fixedly connected to the processing box 1 , the motor 9 is fixed to the inner wall of the transmission box 3 by bolts, the output shaft of the motor 9 is fixedly connected to the main gear 7 , and the motor 9 drives the main gear 7 to rotate.

[0027] The main gear 7 is meshed with the sub gear 8, and the other end of the screw rod 10 is fixedly connected to a side wall of the sub gear 8. The main gear 7 drives the screw rod 10 to rotate through the sub gear 8.

[0028] Two groups of catalytic sleeves 6 are symmetrically installed between the air guide pipes 5. The catalytic sleeves 6 are filled with catalysts. When the methanol gas passes through the catalytic sleeves 6, the catalyst in the catalytic sleeves 6 performs dehydrogenation treatment on the methanol gas.

[0029] An air intake pipe 4 is fixed in the middle of the upper air guide pipe 5 , and an exhaust pipe 2 is fixed in the middle of the lower air guide pipe 5 . Methanol gas enters the device through the air intake pipe 4 , and the dehydrogenated methanol gas is discharged from the device through the exhaust pipe 2 .

[0030] The working principle of the device is as follows: methanol gas enters the air duct 5 through the air inlet pipe 4 and flows into a group of catalytic sleeves 6. At this time, the catalyst in the catalytic sleeves 6 dehydrogenates the methanol gas. The dehydrogenated methanol gas is discharged from the device through the exhaust pipe 2. When the catalyst in a set of catalytic sleeves 6 needs to be replaced due to long service life, the motor 9 can be rotated through the main gear 7, and the driving wheel drives the screw 10 to rotate through the sub-gear 8, so that the reversing plate 12 moves under the action of the thread and the limit of the guide rod 13. By adjusting its position in the air duct 5, the flow direction of methanol can be changed, so that the two sets of catalytic dehydrogenation mechanisms can be used alternately, and the methanol can still be continuously and efficiently dehydrogenated when the filter element is replaced, effectively improving the dehydrogenation efficiency and use effect of the device.

[0031] The above are only further embodiments 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 scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A dehydrogenation reactor capable of improving conversion rate, characterized in that: The invention comprises a processing box (1), wherein two groups of air guide tubes (5) are symmetrically installed at the upper and lower ends of the processing box (1), a screw rod (10) is installed in the air guide tube (5), a guide rod (13) is arranged on one side of the screw rod (10), a reversing plate (12) is sleeved on the screw rod (10) and the guide rod (13), two groups of folding sealing sleeves (11) are symmetrically installed on both sides of the reversing plate (12), a sealing strip is fixed on the outer side wall of the reversing plate (12), a transmission box (3) is installed on one side wall of the processing box (1), a motor (9) is arranged in the transmission box (3), a main gear (7) is fixed on the output shaft of the motor (9), and two groups of auxiliary gears (8) are symmetrically installed on both sides of the main gear (7).

2. A dehydrogenation reactor capable of improving conversion rate according to claim 1, characterized in that: One end of the screw rod (10) is rotatably connected to the inside of the air guide tube (5), the other end of the screw rod (10) passes through the air guide tube (5), and the guide rod (13) is welded inside the air guide tube (5).

3. A dehydrogenation reactor capable of improving conversion rate according to claim 2, characterized in that: The reversing plate (12) is connected to the screw rod (10) by threads, the guide rod (13) passes through the reversing plate (12), the outer diameter of the reversing plate (12) is consistent with the inner diameter of the air guide tube (5), the folding sealing sleeve (11) is fixedly connected to the reversing plate (12) and the air guide tube (5), and a sealing ring (14) is fixed on the outer wall of the reversing plate (12).

4. A dehydrogenation reactor capable of improving conversion rate according to claim 3, characterized in that: The transmission box (3) is fixedly connected to the processing box (1), the motor (9) is fixed to the inner wall of the transmission box (3) by bolts, and the output shaft of the motor (9) is fixedly connected to the main gear (7).

5. A dehydrogenation reactor capable of improving conversion rate according to claim 4, characterized in that: The main gear (7) is meshed with the auxiliary gear (8), and the other end of the screw rod (10) is fixedly connected to a side wall of the auxiliary gear (8).

6. A dehydrogenation reactor capable of improving conversion rate according to claim 5, characterized in that: Two groups of catalytic sleeves (6) are symmetrically installed between the air guide pipes (5), and the catalytic sleeves (6) are filled with catalysts.

7. A dehydrogenation reactor capable of improving conversion rate according to claim 6, characterized in that: An air intake pipe (4) is fixed to the middle of the air guide pipe (5) located at the top, and an exhaust pipe (2) is fixed to the middle of the air guide pipe (5) located at the bottom.

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