Catalyst unloading apparatus and catalyst unloading method

Abstract

The application discloses a catalyst unloading device and a catalyst unloading method. The catalyst unloading device comprises an unloading pipe (1), an air supply pipe (2), a distributor (3) and distribution pipes (4), wherein the first pipe opening (101) of the unloading pipe (1) is fixedly connected with the distributor (3), a preset space is left between the distributor (3) and the first pipe opening (101), one or more distribution pipes (4) are connected with the distributor (3), and distribution pipe air outlet holes (41) are formed in the distribution pipes (4) towards the first pipe opening (101), and the air supply pipe (2) is in communication with the distributor (3) and the distribution pipes (4) in sequence. According to the application, air is supplied to the distributor outside the first pipe opening through the air supply pipe, and air is blown towards the first pipe opening through the distribution pipes by the distributor, so that the catalyst is blown into a fluidized state, enters the unloading pipe and is automatically discharged, and manual unloading is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical equipment, in particular to a catalyst unloading device and a catalyst unloading method. BACKGROUND

[0002] The methanol-to-olefin device is the core technology of the coal-to-olefin process route, and the reactor and the regenerator are core equipment of the device. The reactor produces ethylene and propylene from methanol through a catalyst reaction, and the regenerator burns the carbonized catalyst at high temperature to restore the activity of the catalyst for further reaction.

[0003] During the shutdown of the methanol-to-olefin device, all the catalysts inside need to be unloaded. Figure 1 The present application relates to the technical field of chemical equipment, in particular to a catalyst unloading device and a catalyst unloading method.

[0004] However, in the above process, part of the catalyst remains in the pot, and the catalyst remaining in the pot needs to be unloaded from the reactor and the regenerator. At the same time, the existing catalyst unloading pipeline 5' cannot completely unload the catalyst in the pot, and manual cleaning of the catalyst into the catalyst unloading pipeline 5' is required after opening the manhole. Due to the limitation of the unloading amount of the internal unloading pipeline of the container, the manual unloading time is long, which seriously affects the overhaul period. SUMMARY

[0005] The present application relates to the technical field of chemical equipment, in particular to a catalyst unloading device and a catalyst unloading method.

[0006] In one aspect, the present application provides a catalyst unloading device, which comprises an unloading pipe, an air supply pipe, a distributor, and a distribution pipe. The first pipe opening of the unloading pipe is fixedly connected with the distributor, and a preset space is left between the distributor and the first pipe opening. One or more distribution pipes are connected with the distributor, and distribution pipe air outlet holes are formed on the pipe body of the distribution pipe towards the first pipe opening. The air supply pipe is in communication with the distributor and the distribution pipe in sequence.

[0007] In some embodiments, one end of the distribution pipe is connected with the distributor, and the other end is inclined towards the first pipe opening.

[0008] In some embodiments, the catalyst unloading device comprises a plurality of distribution pipes, and the distributor is a spherical distributor. The plurality of distribution pipes are arranged in a star shape on the distributor.

[0009] In some embodiments, the catalyst unloading device further comprises an unloading tube inner conveying air duct connected with the distributor, one end of the unloading tube inner conveying air duct being in communication with the distributor and the other end extending into the first tube opening.

[0010] In some embodiments, the catalyst unloading device further comprises a distributor support, one end of the distributor support being connected with the first tube opening and the other end being connected with the distributor.

[0011] In some preferred embodiments, the distributor support comprises two support legs, each of the support legs comprising a fixed end and a connecting end, the fixed ends of the two support legs being connected with the first tube opening respectively and the fixed ends of the two support legs being symmetrical about the central axis of the unloading tube, the connecting ends of the two support legs being connected with the distributor to fix the distributor on the central axis of the unloading tube.

[0012] In some embodiments, the first tube opening is connected with a hard joint and the second tube opening of the unloading tube away from the first tube opening is connected with a flange.

[0013] In some embodiments, the catalyst unloading device further comprises a filter screen installed on the first tube opening.

[0014] In some embodiments, the unloading tube is a metal hose and the conveying air duct is a rubber hose, the conveying air duct being fixed on the unloading tube.

[0015] Another aspect of the present application provides a catalyst unloading method, comprising:

[0016] The second tube opening of the unloading tube of the catalyst unloading device is connected with a catalyst unloading pipeline, one end of the catalyst unloading pipeline being in communication with a catalyst device to be unloaded and the other end being in communication with a catalyst extraction device;

[0017] The first tube opening of the catalyst unloading device is inserted into an unloading hole of the catalyst device to be unloaded;

[0018] The conveying air duct of the catalyst unloading device is connected with an air conveying device, and gas is introduced into the conveying air duct while the catalyst extraction device is turned on.

[0019] The present application blows air to the distributor outside the first nozzle through the air supply pipe, and blows air to the first nozzle through the distribution pipe, so that the catalyst is blown into fluidization state and enters the catalyst unloading pipe, thereby realizing automatic unloading of the catalyst and avoiding manual unloading. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A simple flowchart of the existing catalyst unloading line;

[0021] Figure 2 A structural diagram of the catalyst unloading device according to one embodiment of the present application;

[0022] Figure 3 A perspective view of the catalyst unloading device according to one embodiment of the present application;

[0023] Figure 4 An enlarged view of the first nozzle of the catalyst unloading pipe of the catalyst unloading device according to one embodiment of the present application

[0024] Figure 5 Another enlarged view of the first nozzle of the catalyst unloading pipe of the catalyst unloading device according to one embodiment of the present application from another angle;

[0025] Figure 6 Another enlarged view of the first nozzle of the catalyst unloading pipe of the catalyst unloading device according to one embodiment of the present application from another angle;

[0026] Figure 7 A filter screen diagram of the catalyst unloading device according to another embodiment of the present application;

[0027] Figure 8 An installation start diagram of the filter screen of the catalyst unloading device according to another embodiment of the present application;

[0028] Figure 9 An installation process diagram of the filter screen of the catalyst unloading device according to another embodiment of the present application;

[0029] Figure 10 An installation completion diagram of the filter screen of the catalyst unloading device according to another embodiment of the present application;

[0030] Figure 11 A work flowchart of the catalyst unloading method according to one embodiment of the present application;

[0031] Figure 12 The catalyst unloading line simple flow schematic diagram provided for one of the embodiments of the present application;

[0032] Figure 13 The catalyst unloading device and metal hose connection schematic diagram provided for one of the embodiments of the present application;

[0033] Figure 14 The catalyst unloading device and metal hose connection schematic diagram provided for one of the embodiments of the present application;

[0034] Figure 15 The catalyst unloading device and metal hose connection schematic diagram provided for one of the embodiments of the present application;

[0035] Reference Signs List

[0036] 1'-reactor; 2'-regenerator; 3'-catalyst tank; 4'-steam ejector; 5'-catalyst unloading line; 1-unloading pipe; 101-first pipe opening; 102-second pipe opening; 2-air supply pipe; 3-distributor; 4-distribution pipe; 41-distribution pipe air outlet hole; 5-unloading pipe inner conveying air pipe; 6-distributor support; 61-support leg; 7-hard joint; 8-flange; 9-filter screen; 91-filter screen bolt hole; 92-filter screen center unloading pipe inner conveying air pipe hole; 10-steel hoop; 11-ball valve; 12-conveying pipe union joint; 13-plant air conveying pipe; 14-distributor support screw; 15-reactor; 151-reactor manhole pipe root valve; 16-regenerator; 161-regenerator manhole pipe root valve; 17-catalyst unloading additional line; 18-catalyst unloading line; 19-catalyst tank; 20-steam ejector; 21-metal hose; 22-flange. DETAILED DESCRIPTION

[0037] The specific embodiments of the present application are further described below with reference to the accompanying drawings. The same reference numbers in different drawings denote the same or similar components. It should be noted that the words "front", "back", "left", "right", "up", and "down" described in the following description denote the directions in the drawings, and the words "inner" and "outer" respectively denote the directions towards or away from the geometric center of a specific component.

[0038] As Figures 2 to 5As shown in the drawings, the catalyst unloading device of one embodiment of the present application comprises: an unloading pipe 1, an air supply pipe 2, a distributor 3 and a distribution pipe 4, the first pipe opening 101 of the unloading pipe 1 is fixedly connected with the distributor 3, a preset space is left between the distributor 3 and the first pipe opening 101, one or more distribution pipes 4 are connected with the distributor 3, and the distribution pipe outflow holes 41 are formed on the pipe body of the distribution pipe 4 towards the first pipe opening 101, and the air supply pipe 2 is in communication with the distributor 3 and the distribution pipe 4 in sequence.

[0039] Specifically, the unloading pipe 1 has two pipe openings, and the distributor 3 is fixedly connected at the first pipe opening 101. A space is left between the distributor 3 and the first pipe opening 101 for the catalyst to enter. The distributor 3 is provided with one or more distribution pipes 4 in communication with the distributor 3, the distribution pipe outflow holes 41 are formed on the pipe body of the distribution pipe 4 towards the first pipe opening 101, and one end of the air supply pipe 2 is in communication with an external air supply device and the other end is in communication with the distributor 3.

[0040] In use, the first pipe opening 101 of the unloading pipe 1 is inserted into the unloading hole of the catalyst device to be unloaded. The catalyst device to be unloaded includes but is not limited to a reactor and a regenerator. Preferably, the catalyst device to be unloaded is a methanol-to-olefin device reactor or regenerator. The unloading hole can be a manhole of the reactor or regenerator.

[0041] Then, the air supply pipe 2 is connected with an external air supply device, and air is supplied to the air supply pipe 2. For example, the air supply pipe 2 is connected with a factory air supply device, and factory air is supplied to the air supply pipe 2. The air supplied from the air supply pipe 2 is blown out from the distribution pipe outflow holes 41, the catalyst near the first pipe opening 101 is blown into a fluidized state, and enters the unloading pipe 1 from the first pipe opening 101.

[0042] The present application blows air to the distributor outside the first pipe opening through the air supply pipe, and blows air towards the first pipe opening from the distributor through the distribution pipe, so as to blow the catalyst into a fluidized state and enter the unloading pipe, thereby realizing automatic discharge of the catalyst and avoiding manual unloading.

[0043] As shown in the drawings, Figures 2 to 6 As shown in the drawings, the catalyst unloading device of one embodiment of the present application comprises: an unloading pipe 1, an air supply pipe 2, a distributor 3, a distribution pipe 4, an unloading pipe internal air supply pipe 5 connected with the distributor 3, and a distributor support 6, the unloading pipe 1 is a metal hose, the air supply pipe 2 is a rubber hose, the air supply pipe 2 is fixed on the unloading pipe 1, the first pipe opening 101 of the unloading pipe 1 is fixedly connected with the distributor 3, a preset space is left between the distributor 3 and the first pipe opening 101, one or more distribution pipes 4 are connected with the distributor 3, and the distribution pipe outflow holes 41 are formed on the pipe body of the distribution pipe 4 towards the first pipe opening 101, and the air supply pipe 2 is in communication with the distributor 3 and the distribution pipe 4 in sequence;

[0044] The distributor 3 is a spherical distributor, and a plurality of distribution tubes 4 are arranged in a star shape on the distributor 3, one end of the distribution tube 4 is connected with the distributor 3, and the other end is inclined to the first pipe opening 101. One end of the agent discharging pipe inner conveying air pipe 5 is communicated with the distributor 3, and the other end extends into the first pipe opening 101. One end of the distributor support 6 is connected with the first pipe opening 101, and the other end is connected with the distributor 3.

[0045] The distributor support 6 includes two support legs 61, each of which includes a fixed end and a connecting end. The fixed ends of the two support legs 61 are respectively connected with the first pipe opening 101, and the fixed ends of the two support legs 61 are symmetrical about the central axis of the agent discharging pipe 1. The connecting ends of the two support legs 61 are connected with the distributor 3, so as to fix the distributor 3 on the central axis of the agent discharging pipe 1.

[0046] The first pipe opening 101 is connected with a hard joint 7, and the second pipe opening 102 away from the first pipe opening 101 of the agent discharging pipe 1 is connected with a flange 8.

[0047] Specifically, the agent discharging pipe 1 has two pipe openings, and the distributor 3 is fixedly connected at the first pipe opening 101. A space is left between the distributor 3 and the first pipe opening 101 for the catalyst to enter. The distributor 3 is provided with one or more distribution tubes 4 communicated with the distributor 3, and the distribution tube 4 is provided with a distribution tube air outlet hole 41 on the tube body towards the first pipe opening 101. One end of the air pipe 2 is communicated with an external air supply device, and the other end is communicated with the distributor 3.

[0048] The agent discharging pipe 1 is preferably a metal hose made of stainless steel braid. The first pipe opening 101 at one end of the agent discharging pipe 1 is connected with a fixed hard joint 7, and the second pipe opening 102 at the other end is connected with a fixed flange 8. The hard joint 7 is preferably a metal steel ring, and the flange 8 is preferably a loose flange. The hard joint 7 is tightly connected with the agent discharging pipe 1, and the outer end is provided with a screw hole for installing a distributor support screw 14. The air pipe 2 is arranged on the upper part of the agent discharging pipe 1 and connected by a steel hoop 10.

[0049] The air pipe 2 is a rubber hose for conveying plant air to the distributor 3. Preferably, the air pipe 2 is communicated with the distributor 3 through a plant air conveying pipe 13. The air pipe 2 is a rubber hose with a loose joint or a screw thread at both ends. One end of the air pipe 2 is connected with a ball valve 11, which is used to control the opening and flow of plant air. The other end of the air pipe 2 is communicated with the plant air conveying pipe 13 through a conveying pipe loose joint 12.

[0050] Preferably, the plant air conveying pipe 13 is provided. The plant air conveying pipe 13 is a hard metal steel pipe, one end of which is provided with a conveying pipe loose joint 12 for connecting the air pipe 2, conveying the plant air from the air pipe 2 to the distributor 3.

[0051] Distributor 3 is preferably a spherical distributor made of a hard metal hollow sphere. Distributor 3 is connected to air supply duct 2, distribution duct 4, and the internal air delivery duct 5 of the unloading pipe, distributing internal factory air to distribution duct 4 and the internal air delivery duct 5 of the unloading pipe. Preferably, distributor 3 is connected to air supply duct 2 via factory air delivery duct 13.

[0052] There are preferably multiple distribution pipes 4. Multiple distribution pipes 4 are arranged in a star shape on the distributor 3. The distribution pipe 4 is made of a hard steel pipe, one end of which is connected to the distributor 3, and the other end is closed and inclined to the first pipe opening 101. Preferably, the pipe body of the distribution pipe 4 is inclined at 45° toward the first pipe opening 101. Distribution pipe air outlet holes 41 are provided on the pipe body of the distribution pipe 4 facing the first pipe opening 101, and preferably two rows of distribution pipe air outlet holes 41 are provided. Factory air enters the distribution pipe 4 from the distributor 3 and is blown out from the distribution pipe air outlet holes 41 to blow the catalyst in the first pipe opening 101 into a fluidized state and enter the unloading pipe 1.

[0053] The air conveying duct 5 in the unloading pipe is a hard steel pipe, one end of which is connected to the distributor 3 and the other end extends into the first pipe opening 101 of the unloading pipe 1. The factory air enters the air conveying duct 5 in the unloading pipe from the distributor 3 and blows into the first pipe opening 101 to provide conveying air for the unloading pipe 1.

[0054] The distributor bracket 6 is V-shaped and made of hard metal. The distributor bracket 6 includes two bracket legs 61, one end of which is connected to the distributor 3 and the other end is fixed to the hard joint 7 by the distributor bracket screw 14.

[0055] In one embodiment, a filter screen 9 is further included which is installed at the first pipe opening 101 .

[0056] The filter 9 is an optional part and can be installed or removed as needed. Figures 7 to 10 As shown, when there are too many catalyst lining blocks during catalyst unloading, a filter screen 9 is installed between the hard joint 7 and the distributor bracket 6. The outer ring of the filter screen 9 is a metal frame ring, and the frame ring is provided with filter screen bolt holes 91. The filter screen bolt holes 91 are located in the same position as the distributor bracket screws 14. A metal filter screen is installed in the middle of the frame, and a filter screen center unloading pipe inner air duct hole 92 is provided in the middle of the filter screen for inserting the unloading pipe inner air duct 5.

[0057] The embodiment blows air to the distributor outside the first pipe opening through the air supply pipe, and blows air from the distributor to the first pipe opening through the distribution pipe, so that the catalyst is blown into a fluidized state and enters the catalyst unloading pipe, thereby realizing automatic discharge of the catalyst and avoiding manual catalyst unloading. In addition, the air supply pipe is provided as a rubber hose, and is fastened by a steel hoop, so that the air supply pipe provides loose and conveying medium for the front end of the catalyst unloading pipe without losing softness and convenience. The air supply pipe, the distributor and the distribution pipe convey and distribute the plant air, so that the catalyst at the pipe opening of the catalyst unloading pipe is loosened into a fluidized state and enters the metal hose. The conveying air pipe in the catalyst unloading pipe conveys the catalyst in the catalyst unloading pipe by taking the plant air as conveying air, so that the catalyst flows smoothly in the pipeline, and the blockage of the catalyst unloading pipe caused by poor flow of the catalyst is avoided. The filter screen is provided, the distribution pipe works without being affected, the lining blocks carried in the catalyst are filtered, the lining blocks are prevented from blocking the pipeline, and the filter screen is designed to be detachable, so that the unloading speed of the catalyst containing less lining blocks in the upper layer of the reactor and the regenerator is accelerated, and the blockage of the conveying pipeline by the lining blocks when the catalyst containing more lining blocks in the bottom layer of the reactor and the regenerator is avoided.

[0058] As shown in Figure 11 The working flow chart of the catalyst unloading method is shown in the figure, which comprises the following steps:

[0059] In step S1101, the second pipe opening 102 of the catalyst unloading device is connected with a catalyst unloading pipeline, one end of the catalyst unloading pipeline is connected with a catalyst unloading device, and the other end is connected with a catalyst extraction device.

[0060] In step S1102, the first pipe opening 101 of the catalyst unloading device is inserted into a catalyst unloading hole of the catalyst unloading device.

[0061] In step S1103, the air supply pipe 2 of the catalyst unloading device is connected with an air supply device, and gas is supplied to the air supply pipe 2 while the catalyst extraction device is turned on.

[0062] Specifically, in step S1001, the second pipe opening 102 of the catalyst unloading device is connected with a catalyst unloading pipeline, one end of the catalyst unloading pipeline is connected with the catalyst unloading device, and the other end is connected with the catalyst extraction device.

[0063] In step S1102, the first pipe opening 101 of the catalyst unloading device is inserted into a catalyst unloading hole of the catalyst unloading device.

[0064] Wherein, the step S1101 and the step S1102 can be interchanged, that is, the second pipe orifice 102 of the catalyst unloading device can be communicated with the catalyst unloading pipeline first, and then the first pipe orifice 101 is inserted into the catalyst device to be unloaded. Or, the first pipe orifice 101 can be inserted into the catalyst device to be unloaded first, and then the second pipe orifice 102 of the catalyst unloading device is communicated with the catalyst unloading pipeline.

[0065] Finally, the step S1103 is performed to connect the air supply pipe 2 with the air supply device, and at the same time when the catalyst extraction device is opened to extract the catalyst through the catalyst unloading pipeline, the air supply device is used to introduce the gas into the air supply pipe 2, the air from the air supply pipe 2 is blown out from the air outlet hole 41 of the distribution pipe, the catalyst near the first pipe orifice 101 is blown into a fluidized state, and then enters the unloading pipe 1 from the first pipe orifice 101, and then is discharged from the second pipe orifice 102 of the unloading pipe 1 into the catalyst unloading pipeline, thereby realizing automatic extraction.

[0066] As an example, as shown in Figure 12 two catalyst unloading additional pipelines 17 are additionally arranged near the reactor manhole pipeline root valve 151 of the reactor 15 and the regenerator manhole pipeline root valve 161 of the regenerator 16, one end of the catalyst unloading additional pipeline 17 is connected with the reactor manhole pipeline root valve 151 or the regenerator manhole pipeline root valve 161 of the regenerator 16, the first section of the ordinary metal hose 21 is connected with the reactor manhole pipeline root valve 151 or the regenerator manhole pipeline root valve 161 of the regenerator 16 and extends into the equipment, the remaining sections of the ordinary metal hose 21 are sequentially communicated and extend into the equipment, and the last section of the ordinary metal hose 21 is provided with the catalyst unloading device of the embodiment. As shown in Figures 13 to 15 the flange 22 is used to connect the ordinary metal hose 21 with the unloading pipe 1 of the catalyst unloading device, the ordinary metal hose 21 with the ordinary metal hose 21, and the ordinary metal hose 21 with the additional catalyst unloading additional pipeline 17. The other end of the catalyst unloading additional pipeline 17 is communicated with the catalyst unloading pipeline 18. The unloading pipe 1 is communicated with the catalyst unloading pipeline 18 through the multiple sections of the ordinary metal hose 21 and the catalyst unloading additional pipeline 17. One end of the catalyst unloading pipeline 18 is communicated with the reactor 15 and the regenerator 16, and the other end is communicated with the catalyst tank 19 and the steam ejector 20 on the top of the catalyst tank 19 as the catalyst extraction device.

[0067] When used, it is confirmed that the catalyst tank 19 is under negative pressure, and it is confirmed that the catalyst unloading pipeline 18 is smooth. The head of the unloading pipe 1, that is, the first pipe orifice 101, is put into the catalyst stack inside the reactor 15 and the regenerator 16. The other end of the air supply pipe 2 is connected with the plant air through the hose. The air supply pipe 2 can be connected with the plant air through the ball valve 11. The ball valve 11 is opened to adjust the air volume, and the catalyst will be transported into the unloading pipe 1 and into the catalyst tank 19.

[0068] The embodiment inserts the first nozzle of the catalyst unloading device of the application into the unloading hole of the catalyst device to be unloaded, and communicates the second nozzle with the catalyst unloading pipeline, and feeds the gas into the air supply pipe, so as to blow the catalyst into a fluidized state and into the unloading pipe, so that the catalyst is automatically discharged into the catalyst unloading pipeline, the extraction is completed, and manual unloading is avoided.

[0069] The above embodiments only express several embodiments of the application, which are described in detail and specifically, but cannot be understood as the limitation of the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, several modifications and improvements can be made, which all belong to the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. A catalyst unloading device, characterized in that: include: A discharging pipe (1), an air supply pipe (2), a distributor (3) and a distribution pipe (4), wherein the first pipe opening (101) of the discharging pipe (1) is fixedly connected to the distributor (3), a preset space is reserved between the distributor (3) and the first pipe opening (101), a plurality of the distribution pipes (4) are connected to the distributor (3), and a distribution pipe air outlet hole (41) is provided on the pipe body of the distribution pipe (4) facing the first pipe opening (101), and the air supply pipe (2) is sequentially connected to the distributor (3) and the distribution pipe (4); Wherein, one end of the distribution pipe (4) is connected to the distributor (3), and the other end is inclined toward the first pipe opening (101); The distributor (3) is a spherical distributor, and a plurality of distribution pipes (4) are arranged in a star shape on the distributor (3).

2. The catalyst unloading device according to claim 1, characterized in that: It also includes an air delivery duct (5) in the unloading pipe connected to the distributor (3), one end of the air delivery duct (5) in the unloading pipe is connected to the distributor (3), and the other end extends into the first pipe opening (101).

3. The catalyst unloading device according to claim 1 or 2, characterized in that: It also includes a distributor bracket (6), one end of which is connected to the first pipe opening (101), and the other end of which is connected to the distributor (3).

4. The catalyst unloading device according to claim 3, characterized in that: The distributor bracket (6) includes two bracket legs (61), each bracket leg (61) includes a fixed end and a connecting end, the fixed ends of the two bracket legs (61) are respectively connected to the first pipe opening (101), and the fixed ends of the two bracket legs (61) are symmetrical about the central axis of the discharge pipe (1), and the connecting ends of the two bracket legs (61) are connected to the distributor (3), fixing the distributor (3) on the central axis of the discharge pipe (1).

5. The catalyst unloading device according to claim 1 or 2, characterized in that: The first pipe opening (101) is connected to a hard joint (7), and a second pipe opening (102) of the agent discharge pipe (1) away from the first pipe opening (101) is connected to a flange (8).

6. The catalyst unloading device according to claim 1 or 2, characterized in that: It also includes a filter screen (9) installed at the first pipe opening (101).

7. The catalyst unloading device according to claim 1 or 2, characterized in that: The agent discharging pipe (1) is a metal hose, the air supply pipe (2) is a tape hose, and the air supply pipe (2) is fixed on the agent discharging pipe (1).

8. A catalyst unloading method, characterized in that: include: Connecting the second pipe opening (102) of the catalyst unloading pipe (1) of the catalyst unloading device according to any one of claims 1 to 7 to a catalyst unloading pipeline, wherein one end of the catalyst unloading pipeline is connected to the catalyst device to be unloaded, and the other end is connected to the catalyst extraction device; Inserting the first pipe opening (101) of the catalyst unloading device into the unloading hole of the catalyst device to be unloaded; The air supply pipe (2) of the catalyst unloading device is connected to an air supply device, and gas is introduced into the air supply pipe (2) while the catalyst extraction device is turned on.

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