Fluidized bed catalyst filling system

Abstract

The utility model relates to the technical field of catalyst filling, in particular to a fluidized bed catalyst filling system which comprises a catalyst tank arranged below a working platform, a fluidized bed reactor communicated with the catalyst tank, a hoisting mechanism arranged above the working platform and a purging device connected with the catalyst tank, an agent adding opening of an agent adding pipe is formed in the top of the catalyst tank, the agent adding pipe extends to the position above the working platform, and the air outlet end of the purging device penetrates through the agent adding pipe and extends into the catalyst tank; by arranging the hoisting mechanism, the catalyst can be further conveniently filled into the catalyst tank through the catalyst adding pipe, so that the filling difficulty and the filling cost are reduced, and the filling efficiency is improved; and the blowing device can blow away the raised catalyst in the catalyst tank after the catalyst is filled and blocks the catalyst adding pipe, so that more sufficient filling of the catalyst is further ensured, the filling efficiency of the catalyst is improved, and the production efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst filling, and particularly relates to a fluidized bed catalyst filling system. Background Technique

[0002] The fluidized bed is used to carry out hydrogenation reaction on feed oil and hydrogen under the action of a catalyst. Since the fluidized bed hydrogenation reaction needs to add the catalyst in time according to the reaction state, the catalyst is usually stored in a catalyst storage tank first and discharged when needed. For example, the Chinese utility model patent with the application number 201820188358.5 provides a fluidized bed hydrogenation reaction device, which is provided with a catalyst storage tank connected to a fluidized bed reactor for providing the catalyst for the fluidized bed.

[0003] In order to avoid frequently filling the catalyst into the catalyst tank, the volume of the catalyst tank is usually large, and the height is about 20m. Therefore, the rated catalyst is added to the catalyst tank during each operation. However, due to the large volume and high height of the catalyst tank and the large amount of catalyst to be filled, it is difficult and inefficient to manually carry the bagged catalyst. At the same time, diesel oil is filled into the catalyst tank, and the catalyst accumulates at the dosing port after the catalyst is filled, so that the catalyst tank cannot be fully filled, and the actual filling requirement of the catalyst cannot be completed, increasing the dosing time and the filling frequency, thereby reducing the work efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fluidized bed catalyst filling system to solve the technical problem of low filling efficiency of the catalyst tank in the current fluidized bed operation.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fluidized bed catalyst filling system includes a catalyst tank arranged below an operation platform, a fluidized bed reactor communicated with the catalyst tank, a hoisting mechanism arranged above the operation platform, and a purging device connected to the catalyst tank;

[0007] A dosing pipe is arranged at the top of the catalyst tank, the dosing pipe extends above the operation platform, the air inlet end of the purging device is located outside the catalyst tank, and the air outlet end of the purging device passes through the dosing pipe and extends into the catalyst tank.

[0008] Further defined, the dosing pipe includes a dosing section and an aggregate section, a dosing switch valve is arranged on the dosing section, the dosing switch valve is located above the operation platform, and the bottom of the dosing section extends into the catalyst tank;

[0009] The aggregate section is connected to the top of the catalyst tank through the additive section. The additive switching valve is arranged on the additive section. The purging device is detachably connected to the aggregate section, and the gas outlet end of the purging device sequentially passes through the aggregate section and the additive section and extends to the lower part of the additive section.

[0010] Further defined, the additive switching valve is detachably connected to the additive section.

[0011] Further defined, the purging device includes a gas source pipe, a connecting pipe and a diffusion hood which are connected in sequence;

[0012] The gas source is located outside the catalyst tank. The diffusion hood and the connecting pipe both extend into the catalyst tank through the gas source pipe. The aggregate section is detachably connected to the gas source pipe or the connecting pipe.

[0013] Further defined, the additive section is detachably connected to the aggregate section through a flange.

[0014] Further defined, a pressure equalizing pipe is also arranged at the top of the catalyst tank. The pressure equalizing pipe is located on one side of the additive pipe, extends above the operation platform, and is communicated with the inside of the catalyst tank.

[0015] Further defined, a pressure equalizing valve is arranged on the pressure equalizing pipe.

[0016] Further defined, the hoisting mechanism includes a hoisting frame, a hoisting drive and a hook;

[0017] The hoisting frame is arranged above the operation platform. The top of the hoisting drive is slidably connected to the hoisting frame. The hook is drivingly connected to the bottom of the hoisting drive. The additive pipe is located below the hook, and the pressure equalizing pipe extends below the hoisting frame.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. By arranging the catalyst tank below the operation platform and extending the additive pipe above the operation platform, the present utility model reduces the handling difficulty of bagged catalysts; meanwhile, by arranging the hoisting mechanism, it can further facilitate the filling of the catalyst into the catalyst tank through the additive pipe, reduce the filling difficulty and filling cost, and improve the filling efficiency; and by arranging the purging device, it can blow away the bulged catalyst inside the catalyst tank after the catalyst filling blocks the additive pipe, thereby further ensuring more sufficient filling of the catalyst, improving the filling efficiency of the catalyst, and further improving the production efficiency.

[0020] 2. The utility model utilizes the detachable connection between the aggregate section and the gas source pipe or the connecting pipe. On the one hand, after the bulging part in the catalyst tank blocks the additive pipe, the purging device can be connected to the aggregate section, and the pressurized gas output through the diffusion hood opening can blow away the bulging part, so as to facilitate the continuous filling of the catalyst and make the filling more sufficient. On the other hand, the depth of the diffusion hood opening extending into the catalyst tank can be adjusted according to the height of the bulging part, so as to conveniently adjust the position to be purged according to the filling progress and meet the actual use requirements.

[0021] 3. By arranging the pressure equalizing pipe, the utility model can, on the one hand, avoid the risk of pressure in the catalyst tank and, on the other hand, timely discharge the gas blown into the catalyst tank by the purging device, ensure the pressure balance inside the catalyst tank, and ensure safe and reliable use. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the fluidized bed catalyst filling system of the utility model;

[0023] In the figure: 1 - operation platform; 2 - catalyst tank; 3 - fluidized bed reactor; 4 - additive section; 5 - aggregate section; 6 - connecting pipe; 7 - diffusion hood opening; 8 - pressure equalizing pipe; 9 - lifting frame; a - catalyst particles; b - additive switch valve; c - gas source pipe; d - pressure equalizing valve; e - lifting drive; f - lifting hook. Detailed Embodiments

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the following further details the utility model with reference to the drawings and embodiments. The specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, not all of them. However, those skilled in the art should understand that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present disclosure.

[0025] The following details the specific embodiments of the utility model with reference to the drawings.

[0026] Refer to Figure 1 , this embodiment provides a fluidized bed catalyst filling system, including an operation platform 1, a catalyst tank 2, a fluidized bed reactor 3, a lifting mechanism and a purging device.

[0027] Specifically, the catalyst tank 2 is arranged below the operation platform 1. The fluidized bed reactor 3 is communicated with the discharging end at the bottom of the catalyst tank 2. The fluidized bed reactor 3 can be optionally arranged below the operation platform 1 or outside the operation platform 1. The hoisting mechanism is arranged above the operation platform 1 and is used to hoist the packaged catalyst, such as bagged catalyst, canned catalyst or catalyst packaged in other ways.

[0028] Among them, an additive pipe is arranged at the top of the catalyst tank 2. The top of the additive pipe passes through the operation platform 1 and extends above the operation platform 1. The additive pipe is located below the hoisting mechanism. Before the actual filling operation, the packaged catalyst can be stacked on the operation platform 1 in advance for convenient operation. During the filling process, the operator can hoist the stacked catalyst to the position of the additive pipe through the hoisting mechanism, and then fill the catalyst particles a into the catalyst tank 2 along the additive pipe. By repeating this process, manpower can be saved, the filling difficulty can be reduced, and the filling efficiency can be improved.

[0029] After the catalyst particles a are stacked in the catalyst tank 2, a bulge is formed below the additive pipe. When the height of the bulge is the same as that of the additive pipe, the outlet of the additive pipe is blocked, and the catalyst cannot flow smoothly into the catalyst tank 2. At this time, there is still free space in the catalyst tank 2. At this time, when the additive pipe is blocked during the catalyst filling process, the air inlet end of the purging device is connected to the gas source, and the air outlet end of the purging device extends below the additive pipe. The catalyst particles a in the bulge are disturbed and dispersed by the filled diesel to make the catalyst particles a in the catalyst tank 2 evenly scattered in the catalyst tank 2, so that the catalyst particles a can continue to be filled, making the filling of the catalyst in the catalyst tank 2 more uniform and meeting the actual requirements of catalyst filling.

[0030] Furthermore, the additive pipe includes an additive section 4 and an aggregate section 5. The additive section 4 is installed at the top of the catalyst tank 2, and the aggregate section 5 is installed at the top of the additive section 4. Preferably, the aggregate section 5 is detachably connected to the additive section 4, such as by flange connection. When the catalyst tank 2 needs to be filled, the aggregate section 5 is connected to the additive section 4. The top of the aggregate section 5 is of a flared structure, so it is convenient for filling.

[0031] After the filling is completed, the aggregate section 5 can be removed and connected to the top of the additive section 4 through an end cover, which is convenient for the catalyst to be pressed into the fluidized bed reactor 3 by pressure difference during additive addition, meeting the filling requirements of the catalyst.

[0032] Among them, the top of the additive section 4 passes through the operation platform 1 from below the operation platform 1 and extends above the operation platform 1. The aggregate section 5 is located above the operation platform 1. The bottom of the additive section 4 extends into the catalyst tank 2, and the extension length is about 5 m.

[0033] At the same time, an additive switch valve b is provided on the additive section 4, and the additive switch valve b is located above the working platform 1. The additive switch valve b can adjust the opening of the additive section 4 to control the amount of additive, and can also close the additive section 4 to facilitate the control of the additive state.

[0034] Similarly, the dosing switch valve b is also selected to be detachably connected to the dosing section 4 through a flange, so as to facilitate maintenance and replacement.

[0035] To further explain, the purging device includes an air source pipe c, a connecting pipe 6 and a diffusion hood port 7 which are connected in sequence.

[0036] One end of the gas source pipe c is connected to the gas source, which can be pressurized nitrogen or other inert gas to ensure the safety of the dosing; the other end of the gas source pipe c is connected to the connecting pipe 6, and the length of the gas source pipe c can be adjusted according to demand, for example, selected to be 5m to 10m.

[0037] The connecting pipe 6 is a hollow cylindrical structure, and the material can be iron or copper to increase the weight; the flared end of the diffusion cover mouth 7 is downward when in use and is used to blow away the raised catalyst particles a; in order to facilitate use and reduce the difficulty of manual operation, it is preferred to disassemble the gas source pipe c or the connecting pipe 6 and the aggregate section 5 when in use, and the disassembly connection can be connected by snapping, bonding, tying or locking, etc., to ensure a stable connection while reducing the difficulty of disassembly; to achieve the blowing of the raised areas of different heights in the catalyst tank 2, to ensure that the catalyst is more fully filled in the catalyst tank 2.

[0038] In order to prevent excessive pressurized gas from accumulating in the catalyst tank 2 during the purging process and increasing the gas pressure in the catalyst tank 2, a pressure equalizing pipe 8 is selected to be provided on the top of the catalyst tank 2. The top of the pressure equalizing pipe 8 extends through the working platform 1 to the bottom thereof to release the gas. In order to prevent the gas inside the catalyst tank 2 from causing damage to the human body, the gas outlet end of the pressure equalizing pipe 8 needs to face away from the personnel working space, and can also be selected to be input into the exhaust gas filtration system of the factory area.

[0039] At the same time, in order to prevent the pressure equalizing pipe 8 from bringing moisture into the catalyst tank 2, a pressure equalizing valve d is installed on the pressure equalizing pipe 8. The pressure equalizing valve d can be an exhalation valve or a one-way valve.

[0040] To further explain, the hoisting mechanism includes a hoisting frame 9, a hoisting drive e and a hook f. The hoisting frame 9 is installed on the working platform 1. The hoisting frame 9 is located above the dosing pipe, and the pressure equalizing pipe 8 is located below the hoisting frame 9.

[0041] The lifting drive e is slidably connected to the lifting frame 9, so that the lifting drive e can reciprocate on the lifting frame 9, and is used to drive the hook f to move between the catalyst stacking position and the aggregate section 5, to transport the catalyst and improve the filling efficiency; the hook f is transmission-connected to the lifting drive e, and is used to drive the hook f to move up and down.

[0042] Obviously, the embodiments described above are only some of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fluidized bed catalyst filling system, characterized in that: It comprises a catalyst tank (2) arranged below an operating platform (1), a fluidized bed reactor (3) connected to the catalyst tank (2), a hoisting mechanism arranged above the operating platform (1) and a purge device connected to the catalyst tank (2); A dosing pipe is provided on the top of the catalyst tank (2), and the dosing pipe extends to the top of the working platform (1). The air inlet end of the purge device is located outside the catalyst tank (2), and the air outlet end of the purge device passes through the dosing pipe and extends to the inside of the catalyst tank (2).

2. The ebullated bed catalyst filling system according to claim 1, characterized in that: The dosing pipe comprises a dosing section (4) and a material collecting section (5); the dosing section (4) is provided with a dosing switch valve (b); the dosing switch valve (b) is located above the working platform (1); and the bottom of the dosing section (4) extends to the interior of the catalyst tank (2); The aggregate section (5) is connected to the top of the catalyst tank (2) via the dosing section (4); the dosing switch valve (b) is arranged on the dosing section (4); the purge device is detachably connected to the aggregate section (5); and the air outlet end of the purge device sequentially passes through the aggregate section (5) and the dosing section (4) and extends to the bottom of the dosing section (4).

3. The ebullated bed catalyst filling system according to claim 2, characterized in that: The dosing switch valve (b) is detachably connected to the dosing section (4).

4. The ebullated bed catalyst filling system according to claim 3, characterized in that: The purging device comprises an air source pipe (c), a connecting pipe (6) and a diffusion cover port (7) which are connected in sequence; The gas source is located outside the catalyst tank (2), the diffusion cover port (7) and the connecting pipe (6) are both extended to the inside of the catalyst tank (2) through the gas source pipe (c), and the aggregate section (5) is detachably connected to the gas source pipe (c) or the connecting pipe (6).

5. The ebullated bed catalyst filling system according to claim 4, characterized in that: The additive section (4) is detachably connected to the aggregate section (5) via a flange.

6. The ebullated bed catalyst filling system according to claim 5, characterized in that: A pressure equalizing pipe (8) is also provided on the top of the catalyst tank (2). The pressure equalizing pipe (8) is located on one side of the dosing pipe. The pressure equalizing pipe (8) extends above the working platform (1). The pressure equalizing pipe (8) is connected to the interior of the catalyst tank (2).

7. The ebullated bed catalyst filling system according to claim 6, characterized in that: The pressure equalizing pipe (8) is provided with a pressure equalizing valve (d).

8. The ebullated bed catalyst filling system according to claim 7, characterized in that: The hoisting mechanism comprises a hoisting frame (9), a hoisting drive (e) and a hook (f); The hanging frame (9) is arranged above the working platform (1), the top of the hanging drive (e) is slidably connected to the hanging frame (9), the hook (f) is transmission-connected to the bottom of the hanging drive (e), the dosing pipe is located below the hook (f), and the pressure equalizing pipe (8) extends to the bottom of the hanging frame (9).

Images