Catalyst precursor injection device and method for slurry bed reactor

Abstract

The invention relates to the field of slurry bed reactors, and discloses a catalyst precursor injection device and method for a slurry bed reactor, the catalyst precursor injection device comprises a tank body and a storage tank, the outer wall of the tank body is provided with a feeding port, the storage tank is inserted into the inner wall of the feeding port, the inner wall of the storage tank is provided with a pre-pressing assembly, and the pre-pressing assembly is inserted into the storage tank. The pre-pressing assembly comprises a pressed pipe, the right end of the pressed pipe is fixedly connected to the left end of the storage tank, a communicating hole is formed in the left surface of the pressed pipe, a pressure plate is connected to an inner wall piston of the pressed pipe, a connecting rod is fixedly connected to the right end of the pressure plate, and the connecting rod penetrates through and is slidably connected to the inner wall of the storage tank. According to the invention, a catalyst precursor can be put into the storage tank firstly, the storage cavity is pressurized through the gas transmission pressurization equipment, and when the internal pressure of the storage cavity is the same as the internal pressure of the pressure cavity, the catalyst precursor can be injected into the tank body, so that the deterioration probability of the catalyst precursor is reduced, and the catalytic effect can be improved.

Description

Technical Field

[0001] The present invention relates to the field of slurry bed reactors, and in particular to a catalyst precursor injection device and method for a slurry bed reactor. Background Art

[0002] A slurry bed reactor is a device used for chemical reactions and is widely used in chemical industry, energy and other fields. It is usually a cylindrical closed container that can withstand a certain pressure and temperature and provide a relatively stable space for the reaction. Most reactions require the assistance of catalysts. At this time, an injection device is needed to inject the catalyst precursor into the reactor.

[0003] During the reaction, in order to ensure the reaction rate, it is necessary to inject gas into the reactor to increase the internal pressure of the reactor, which will cause the internal air pressure of the reactor to be greater than the external air pressure. At this time, if the catalyst precursor is directly injected into the reactor, the huge pressure change will cause the physical or chemical properties of the catalyst precursor to change, which will affect the catalytic effect. Therefore, a catalyst precursor injection device and method for a slurry bed reactor are proposed to solve the above problems. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides a catalyst precursor injection device and method for a slurry bed reactor, which aims to solve the problem in the prior art that "due to the pressure difference between the inside and outside of the reactor, directly injecting the catalyst precursor into the reactor will affect the catalytic effect".

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A catalyst precursor injection device for a slurry bed reactor comprises a tank body and a storage tank, wherein the outer wall of the tank body is provided with an inlet, the storage tank is plugged into the inner wall of the inlet, and the inner wall of the storage tank is provided with a pre-pressing component; The pre-pressurization assembly includes a pressure-bearing tube, the right end of the pressure-bearing tube is fixedly connected to the left end of the storage tank, the left surface of the pressure-bearing tube is provided with a connecting hole, the inner wall piston of the pressure-bearing tube is connected to a pressure plate, the right end of the pressure plate is fixedly connected to a connecting rod, the connecting rod passes through and is slidably connected to the inner wall of the storage tank, the right end of the connecting rod is fixedly connected to a balance plate, the cavity between the pressure plate and the connecting hole is set as a pressure cavity, the balance plate piston is connected to the inner wall of the storage tank, the inner wall of the storage tank near the right side cavity of the balance plate is set as a material storage cavity, and a pressurizing structure capable of increasing the pressure in the material storage cavity is provided in the storage tank; An opening and closing assembly for injecting catalyst precursor is arranged on the storage tank located outside the material storage cavity.

[0006] As a further description of the above technical solution: The boost structure comprises: A return spring connected between the balance plate and the bottom of the storage tank; A gas delivery pipe, one end of which is connected to the storage tank, and the other end of which is equipped with a gas delivery head.

[0007] As a further description of the above technical solution: The right end of the storage tank is fixedly connected with a support rod, the right end of the support rod is fixedly connected with a support plate, and the front and rear ends of the support plate are fixedly connected with handles.

[0008] As a further description of the above technical solution: The right end of the balance plate is fixedly connected with an indicator rod, the right end of the indicator rod passes through and is slidably connected to the outer wall of the storage tank, the indicator rod passes through and is slidably connected to the right end of the support plate, the right end of the indicator rod is fixedly connected with a rubber block, the right end of the support plate is fixedly connected with a baffle, and the baffle is set to be U-shaped.

[0009] As a further description of the above technical solution: The opening and closing assembly comprises a fixing frame, which is fixedly connected to the inner wall of the storage tank, and the inner wall of the fixing frame is hinged with an opening and closing plate.

[0010] As a further description of the above technical solution: The opening and closing plate is fixedly connected with a support frame on one side close to the center line of the storage tank, and the outer wall of the support frame is sleeved with a guide frame.

[0011] As a further description of the above technical solution: The right end of the guide frame is fixedly connected with a transmission rod, the transmission rod penetrates and is slidably connected to the right surface of the storage tank, and the right end of the transmission rod is fixedly connected with a connector.

[0012] As a further description of the above technical solution: The outer wall of the connecting head is fixedly connected with a transmission frame, the right surface of the storage tank is rotatably connected with a threaded rod, and the transmission frame is threadedly connected to the inner wall of the threaded rod.

[0013] As a further description of the above technical solution: A motor is installed on the support plate, and an output shaft of the motor is drivingly connected to the threaded rod.

[0014] An operating method for a catalyst precursor injection device for a slurry bed reactor comprises the following steps.

[0015] S1: Before feeding, start the motor to drive the threaded rod to rotate, drive the transmission frame to move to the left, push the connector to move to the left, push the transmission rod to move to the left, push the opening and closing plate to rotate outward and tilt to open, then the whole device can be rotated to a vertical state, then the catalyst precursor to be fed can be poured into the storage tank, then the motor can be adjusted to rotate in the opposite direction to drive the opening and closing plate to close again, and the preparation work is now completed; S2: After the preparation work is completed, the whole device can be inserted into the tank through the insertion port. At this time, the pressure chamber will be directly connected to the internal space of the tank through the connecting hole. Since the internal pressure of the tank is relatively high, the pressure inside the pressure chamber will also increase, pushing the pressure plate to move to the right, pushing the connecting rod to move to the right, and the connecting rod will push the balance plate to move to the right. At this time, the reset spring is stretched, and the balance plate will push the indicator rod to move to the right; S3. When the operator observes that the indicator rod moves to the right, the pressure inside the tank is greater than the standard air pressure. Then the operator can drive the gas into the storage tank through the external gas transmission and pressure boosting equipment to increase the air pressure inside the storage chamber. When the air pressure inside the storage chamber is equal to the air pressure inside the pressure chamber, the thrust on the pressure plate is the same as the thrust on the balance plate. At this time, the reset spring can pull the balance plate to move to the left and reset. At the same time, the balance plate will drive the indicator rod to move to the left and reset. When the operator observes that the indicator rod moves to the left and resets, the air pressure inside the pressure chamber and the storage chamber is already in the same state, which means that the simulation step is completed. S4: When the air pressure in the pressure chamber is the same as that in the storage chamber, the motor can be started to drive the threaded rod to rotate. The rotation of the threaded rod can drive the opening and closing plate to rotate and open. At this time, the catalyst precursor in the storage tank can enter the interior of the tank through the opening. During the feeding process, the operator can drive the entire device to rotate by rotating the handle, which can further promote the feeding. S5: When the feeding is completed, the motor can be adjusted to rotate in the opposite direction to drive the pressure plate to rotate inward and close, and then the entire device can be pulled out from the inside of the tank to complete a complete feeding.

[0016] The present invention has the following beneficial effects: 1. In the present invention, when it is necessary to add a catalyst precursor, the catalyst precursor can be first put into the storage tank, and then the storage tank can be inserted into the input port. The storage chamber can be pressurized by means of a pressurizing device. When the pressure inside the storage chamber is the same as the pressure inside the pressure chamber, the balance plate will be reset under the drive of the reset spring. Since the pressure inside the storage chamber is gradually increased, the catalyst precursor can gradually adapt to the pressure inside the tank body, thereby reducing the probability of deterioration of the catalyst precursor and improving the catalytic effect. 2. In the present invention, by using a set of transmission frames to drive two sets of transmission rods to move synchronously, the two sets of opening and closing plates can be controlled to rotate and open simultaneously, so that the pressure relief speed on both sides of the overall device can be the same when the overall device is opened, which can prevent the storage tank from being damaged due to different pressure relief speeds on both sides, and the overall device has good durability; 3. In the present invention, the baffle plate is provided to shield the rubber block. When the pressure tube is inserted into the tank body, due to the high pressure inside the tank body, the gas inside the tank body will push the pressure plate to move quickly to the right, so that the indicator rod and the rubber block will also be driven to move quickly to the right. The baffle plate can block the rubber block, thus preventing the rubber block from directly hitting the operator, and the overall device has better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention in a semi-inserted state; Figure 2 It is a schematic diagram of the three-dimensional structure cross section of the storage tank in the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the opening and closing component in the present invention in an open state; Figure 4 It is a schematic diagram of the three-dimensional structure of the support frame and the guide frame in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention in a fully inserted state.

[0018] Legend: 1. Tank body; 2. Inlet; 3. Storage tank; 4. Pre-pressurization assembly; 41. Pressure pipe; 42. Pressure plate; 43. Connecting hole; 44. Pressure chamber; 45. Connecting rod; 46. Balance plate; 47. Reset spring; 48. Storage chamber; 49. Indicator rod; 410. Gas pipe; 411. Gas head; 412. Rubber block; 5. Opening and closing assembly; 51. Fixed frame; 52. Opening and closing plate; 53. Support frame; 54. Guide frame; 55. Transmission rod; 56. Connecting head; 57. Transmission frame; 58. Threaded rod; 59. Motor; 6. Boosting assembly; 61. Support rod; 62. Support plate; 63. Baffle; 64. Handle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Reference Figure 1 - Figure 3, an embodiment of the present invention is: a catalyst precursor injection device for a slurry bed reactor, comprising a tank body 1 for storing a liquid to be reacted and a storage tank 3 for storing a catalyst precursor, the outer wall of the tank body 1 is provided with an inlet 2 for adding a catalyst, a control valve is installed inside the tank body 1, and the connection and closing of the inlet 2 can be controlled, the storage tank 3 is plugged into the inner wall of the inlet 2, and the inner wall of the storage tank 3 is provided with a pre-pressing component 4 for simulating the high pressure condition inside the tank body 1, the pre-pressing component 4 includes a pressure tube 41 for supporting the movement of a pressure plate 42, the right end of the pressure tube 41 is fixedly connected to the left end of the storage tank 3, the left surface of the pressure tube 41 is provided with a connecting hole 43 for supplying air flow into the pressure tube 41, the inner wall piston of the pressure tube 41 is connected with a pressure plate 42 for pushing a connecting rod 45, the right end of the pressure plate 42 is fixedly connected with a connecting rod 45 for transmitting motion, and the connecting rod 45 passes through and is slidably connected to the inner wall of the storage tank 3.

[0021] When the pressure plate 42 moves to the right, the connecting rod 45 will also move to the right synchronously. The right end of the connecting rod 45 is fixedly connected to a balance plate 46 for supporting the connecting rod 45. The cavity between the pressure plate 42 and the connecting hole 43 is set as a pressure chamber 44. When the pressure tube 41 is inserted into the interior of the tank body 1, the gas inside the tank body 1 will enter the interior of the pressure chamber 44, which will cause the internal pressure of the pressure chamber 44 to be equal to the internal pressure of the tank body 1.

[0022] Reference Figure 1 - Figure 3 The piston of the balance plate 46 is connected to the inner wall of the storage tank 3, and the balance plate 46 can move left and right on the inner wall of the storage tank 3. The inner wall of the storage tank 3 near the right side cavity of the balance plate 46 is set as a storage chamber 48, and the storage chamber 48 can be used to store catalysts. The left end of the balance plate 46 is fixedly connected to a reset spring 47 for driving the balance plate 46 to move and reset. The left end of the reset spring 47 is fixedly connected to the inner wall of the storage tank 3, and the reset spring 47 will always pull the balance plate 46 to the left. The right end of the balance plate 46 is fixedly connected to an indicator rod 49 for prompting the operator, and the right end of the indicator rod 49 passes through and is slidably connected to the outer wall of the storage tank 3.

[0023] By observing the position of the indicator rod 49, the position of the balance plate 46 at this time can be compared. A gas pipe 410 for conveying gas to the inside of the storage tank 3 is installed on the right surface of the storage tank 3. A gas head 411 for connecting a gas boosting device is installed on the right end of the gas pipe 410. The gas boosting device is a prior art. After being connected to the gas head 411, high-pressure gas can be input into the storage tank 3. Due to the prior art and the fact that it can be implemented by people in this field, no further description will be made in this case. The inner wall of the storage tank 3 is provided with an opening and closing component 5 for controlling the opening or closing of the outside of the storage tank 3.

[0024] Reference Figure 2 , Figure 3 and Figure 5 The right end of the storage tank 3 is fixedly connected with a support rod 61, and the right end of the support rod 61 is fixedly connected with a support plate 62 for providing support for the installation of other components. When the support plate 62 moves, it will drive the storage tank 3 to move synchronously through the support rod 61. The front and rear ends of the support plate 62 are fixedly connected with handles 64 for facilitating the operator to manually move the entire device. Generally, the entire device is manually moved by the operator holding the handle 64. When the overall environment is not suitable for people to stand, the entire device can also be driven to move by clamping the handle 64 by a manipulator. The indicator rod 49 passes through and is slidably connected to the right end of the support plate 62. The right end of the indicator rod 49 is fixedly connected with a rubber block 412. The right end of the support plate 62 is fixedly connected with a baffle 63 for blocking the rubber block 412. The baffle 63 is set to a U shape. By using the baffle 63 to block the rubber block 412, the rubber block 412 can be prevented from moving too fast to injure the operator.

[0025] Reference Figure 2 - Figure 4 The opening and closing assembly 5 includes a fixed frame 51 for supporting the movement of an opening and closing plate 52. The fixed frame 51 is fixedly connected to the inner wall of the storage tank 3. The inner wall of the fixed frame 51 is hinged with an opening and closing plate 52 for controlling the opening or closing of the storage tank 3. The outer wall of the opening and closing plate 52 is made of rubber material and can maintain good sealing after being fitted with the fixed frame 51.

[0026] The opening and closing plate 52 is fixedly connected to a support frame 53 near the center line of the storage tank 3 to drive the opening and closing plate 52 to rotate. The outer wall of the support frame 53 is sleeved with a guide frame 54 for driving the support frame 53 to move. The right end of the guide frame 54 is fixedly connected to a transmission rod 55 for driving the guide frame 54 to move. The transmission rod 55 penetrates and is slidably connected to the right surface of the storage tank 3. When the transmission rod 55 moves to the left, the support frame 53 can be squeezed by the guide frame 54 to drive the opening and closing plate 52 to rotate outward and open. The right end of the transmission rod 55 is fixedly connected to a connector 56 that drives the transmission rod 55 to move. The outer wall of the connector 56 is fixedly connected to the It is fixedly connected with a transmission frame 57. When the transmission frame 57 moves left and right, the connecting head 56 will be driven to move synchronously, so that the transmission rod 55 will also be driven to move synchronously. The right surface of the storage tank 3 is rotatably connected with a threaded rod 58 for controlling the movement of the transmission frame 57. The transmission frame 57 is threadedly connected to the inner wall of the threaded rod 58. The right surface of the support plate 62 is installed with a motor 59 for controlling the rotation of the threaded rod 58. The right end of the threaded rod 58 is fixedly connected to the left end of the output shaft of the motor 59. The motor 59 is a servo motor, which can be started and stopped at any time, and can realize forward and reverse rotation. The threaded rod 58 can be driven to rotate by starting the motor 59.

[0027] This embodiment also provides an operating method for a catalyst precursor injection device for a slurry bed reactor, comprising the following steps: S1: Before feeding, start the motor 59 to drive the threaded rod 58 to rotate, drive the transmission frame 57 to move to the left, push the connector 56 to move to the left, push the transmission rod 55 to move to the left, push the opening and closing plate 52 to rotate outward and tilt to open, then the whole device can be rotated to a vertical state, and then the catalyst precursor to be fed can be poured into the storage tank 3, and then the motor 59 can be adjusted to rotate in the opposite direction to drive the opening and closing plate 52 to close again, and the preparation work is completed; S2: After the preparation work is completed, the whole device can be inserted into the tank body 1 through the input port 2. At this time, the pressure chamber 44 will be directly connected with the internal space of the tank body 1 through the connecting hole 43. Since the internal pressure of the tank body 1 is relatively large, the pressure inside the pressure chamber 44 will also increase, pushing the pressure plate 42 to move rightward, pushing the connecting rod 45 to move rightward, and the connecting rod 45 will push the balance plate 46 to move rightward. At this time, the reset spring 47 is stretched, and the balance plate 46 will push the indicator rod 49 to move rightward; S3, when the operator observes that the indicator rod 49 moves to the right, the internal pressure of the tank body 1 is greater than the standard air pressure, and then the operator can drive the gas into the storage tank 3 through the external gas transmission and pressure boosting equipment to increase the internal air pressure of the storage chamber 48. When the internal air pressure of the storage chamber 48 is equal to the internal air pressure of the pressure chamber 44, the thrust of the pressure plate 42 is the same as the thrust of the balance plate 46. At this time, the reset spring 47 can pull the balance plate 46 to move to the left and reset. At the same time, the balance plate 46 will drive the indicator rod 49 to move to the left and reset. When the operator observes that the indicator rod 49 moves to the left and resets, the internal air pressure of the pressure chamber 44 and the storage chamber 48 are already in the same state, which means that the simulation step is completed; S4: When the air pressure in the pressure chamber 44 is the same as that in the material storage chamber 48, the motor 59 can be started to drive the threaded rod 58 to rotate. The rotation of the threaded rod 58 can drive the opening and closing plate 52 to rotate and open. At this time, the catalyst precursor in the storage tank 3 can enter the interior of the tank body 1 through the opening. During the feeding process, the operator can drive the entire device to rotate by rotating the handle 64, so as to further promote the feeding. S5: When the feeding is completed, the motor 59 can be adjusted to rotate in the reverse direction to drive the pressure plate 42 to rotate inward and close, and then the entire device can be pulled out from the inside of the tank body 1 to complete a complete feeding.

Claims

1. A catalyst precursor injection device for a slurry bed reactor, comprising a tank body (1) and a storage tank (3), wherein the outer wall of the tank body (1) is provided with an injection port (2), characterized in that: The storage tank (3) is plugged into the inner wall of the input port (2), and the inner wall of the storage tank (3) is provided with a pre-pressing component (4); The pre-pressurizing assembly (4) comprises a pressure-bearing tube (41), the right end of which is fixedly connected to the left end of the storage tank (3), the left surface of which is provided with a connecting hole (43), the inner wall piston of the pressure-bearing tube (41) is connected to a pressure plate (42), the right end of the pressure plate (42) is fixedly connected to a connecting rod (45), the connecting rod (45) passes through and is slidably connected to the inner wall of the storage tank (3), the right end of the connecting rod (45) is fixedly connected to a balance plate (46), the cavity between the pressure plate (42) and the connecting hole (43) is set as a pressure cavity (44), the balance plate (46) is piston-connected to the inner wall of the storage tank (3), the inner wall of the storage tank (3) near the right side cavity of the balance plate (46) is set as a material storage cavity (48), and the storage tank (3) is provided with a pressurizing structure (6) capable of increasing the pressure in the material storage cavity (48); An opening and closing assembly (5) for injecting a catalyst precursor is provided on the storage tank (3) located outside the material storage chamber (48).

2. The catalyst precursor injection device for a slurry bed reactor according to claim 1, characterized in that: The boost structure (6) comprises: a return spring (47), wherein the return spring (47) is connected between the balance plate (46) and the bottom of the storage tank (3); A gas delivery pipe (410), one end of which is connected to the storage tank (3), and the other end of which is provided with a gas delivery head (411).

3. The catalyst precursor injection device for a slurry bed reactor according to claim 1, characterized in that: The right end of the storage tank (3) is fixedly connected to a support rod (61), the right end of the support rod (61) is fixedly connected to a support plate (62), and the front and rear ends of the support plate (62) are fixedly connected to handles (64).

4. The catalyst precursor injection device for a slurry bed reactor according to claim 3, characterized in that: The right end of the balance plate (46) is fixedly connected to an indicator rod (49), the right end of the indicator rod (49) passes through and is slidably connected to the outer wall of the storage tank (3), the indicator rod (49) passes through and is slidably connected to the right end of the support plate (62), the right end of the indicator rod (49) is fixedly connected to a rubber block (412), the right end of the support plate (62) is fixedly connected to a baffle (63), and the baffle (63) is arranged in a U shape.

5. The catalyst precursor injection device for a slurry bed reactor according to claim 3, characterized in that: The opening and closing assembly (5) comprises a fixing frame (51), wherein the fixing frame (51) is fixedly connected to the inner wall of the storage tank (3), and an opening and closing plate (52) is hingedly connected to the inner wall of the fixing frame (51).

6. The catalyst precursor injection device for a slurry bed reactor according to claim 5, characterized in that: A support frame (53) is fixedly connected to one side of the opening and closing plate (52) close to the center line of the storage tank (3), and a guide frame (54) is sleeved on the outer wall of the support frame (53).

7. A catalyst precursor injection device for a slurry bed reactor according to claim 6, characterized in that: The right end of the guide frame (54) is fixedly connected to a transmission rod (55), the transmission rod (55) penetrates and is slidably connected to the right surface of the storage tank (3), and the right end of the transmission rod (55) is fixedly connected to a connector (56).

8. The catalyst precursor injection device for a slurry bed reactor according to claim 7, characterized in that: The outer wall of the connecting head (56) is fixedly connected to a transmission frame (57), the right surface of the storage tank (3) is rotatably connected to a threaded rod (58), and the transmission frame (57) is threadedly connected to the inner wall of the threaded rod (58).

9. The catalyst precursor injection device for a slurry bed reactor according to claim 8, characterized in that: A motor (59) is mounted on the support plate (62), and an output shaft of the motor (59) is drivingly connected to the threaded rod (58).

10. The method for operating the catalyst precursor injection device for a slurry bed reactor according to claim 9, characterized in that: The following steps are involved: S1: Before feeding, the motor (59) is started to drive the threaded rod (58) to rotate, drive the transmission frame (57) to move to the left, push the connector (56) to move to the left, push the transmission rod (55) to move to the left, push the opening and closing plate (52) to rotate outward and tilt to open, then the whole device can be rotated to a vertical state, and then the catalyst precursor to be fed can be poured into the storage tank (3), and then the motor (59) can be adjusted to rotate in the opposite direction to drive the opening and closing plate (52) to close again, and the preparation work is completed; S2: After the preparation work is completed, the whole device can be inserted into the interior of the tank body (1) through the insertion port (2). At this time, the pressure chamber (44) will be directly connected to the internal space of the tank body (1) through the connecting hole (43). Since the internal pressure of the tank body (1) is relatively high, the pressure inside the pressure chamber (44) will also increase accordingly, pushing the pressure plate (42) to move rightward, pushing the connecting rod (45) to move rightward, and the connecting rod (45) will push the balance plate (46) to move rightward. At this time, the return spring (47) is stretched, and at the same time, the balance plate (46) will push the indicator rod (49) to move rightward; S3. When the operator observes that the indicator rod (49) moves to the right, the internal pressure of the tank body (1) is greater than the standard air pressure. The operator can then drive the gas into the storage tank (3) through the external gas transmission and pressure boosting equipment to increase the internal air pressure of the storage chamber (48). When the internal air pressure of the storage chamber (48) is equal to the internal air pressure of the pressure chamber (44), the thrust of the pressure plate (42) is the same as the thrust of the balance plate (46). At this time, the reset spring (47) can pull the balance plate (46) to move it to the left and reset. At the same time, the balance plate (46) will drive the indicator rod (49) to move to the left and reset. When the operator observes that the indicator rod (49) moves to the left and resets, the internal air pressure of the pressure chamber (44) and the storage chamber (48) are in the same state, which means that the simulation step is completed. S4: When the internal air pressure of the pressure chamber (44) and the storage chamber (48) is the same, the motor (59) can be started to drive the threaded rod (58) to rotate. The rotation of the threaded rod (58) can drive the opening and closing plate (52) to rotate and open. At this time, the catalyst precursor in the storage tank (3) can enter the tank body (1) through the opening. During the feeding process, the operator can drive the entire device to rotate by rotating the handle (64), so as to further promote the feeding. S5: When the feeding is completed, the motor (59) can be adjusted to rotate in the opposite direction to drive the pressure plate (42) to rotate inward and close, and then the entire device can be withdrawn from the interior of the tank body (1), completing a complete feeding.

Images