Solid catalyst recycling device based on casing barrier and cyclone separation

Abstract

The utility model discloses a solid catalyst recycling device based on casing pipe barrier and cyclone separation, including the reaction kettle body, the reaction kettle body inner chamber bottom is installed with casing pipe subassembly, and casing pipe subassembly is located below the stirring mechanism in the reaction kettle body, and the casing pipe subassembly bottom is linked through the material pipe with cyclone separator side part tangential inlet intercommunication, and the underflow of cyclone separator is linked through the reflux tube with the reaction kettle body inner chamber top intercommunication, casing pipe subassembly is formed by the inside conical fairing and the outside annular baffle splicing, the solid catalyst recycling device can solve the problem that the catalyst is lost in traditional craft, filters the blockage, and the catalyst recovery rate is improved significantly, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to a solid catalyst recycling device based on sleeve barrier and cyclone separation, belonging to the field of solid catalyst recycling technology. Background Technology

[0002] A slurry reactor is a three-phase reactor. Its core feature is that tiny solid catalyst particles are suspended in a liquid medium to form a slurry, while reactant gases are bubbled in and pass through this slurry layer.

[0003] In traditional slurry reactors or stirred tanks, directly extracting the slurry from the tank during discharge will carry away a large amount of catalyst particles. Even with simple filters, they are prone to clogging or damage, causing expensive catalyst to be passively lost with the product, increasing costs and the burden on subsequent separation processes.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a solid catalyst recycling device based on sleeve barrier and cyclone separation, which can solve the problems of catalyst loss and filter blockage in traditional processes, significantly improve catalyst recovery rate, and reduce production costs.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: A solid catalyst recycling device based on sleeve barrier and cyclone separation includes a reactor body. A sleeve assembly is installed at the bottom of the reactor body cavity. The sleeve assembly is located below the stirring mechanism in the reactor body. The bottom of the sleeve assembly is connected to the tangential inlet of the side of the cyclone separator through a transfer pipe. The underflow port of the cyclone separator is connected to the top of the reactor body cavity through a return pipe. The sleeve assembly is composed of an inner conical flow guide shroud and an outer annular baffle.

[0007] Furthermore, the conical guide shield adopts an inverted conical structure that is larger at the top and smaller at the bottom. The top of the conical guide shield is open, and the bottom of the conical guide shield is connected to the transfer pipe to achieve communication.

[0008] Furthermore, the bottom of the annular baffle is fixedly connected to the bottom wall of the reactor body, and the top of the annular baffle is fixedly connected to the top of the conical guide shroud.

[0009] Furthermore, an annular cavity is formed between the annular baffle and the reactor body.

[0010] Furthermore, the overflow port of the hydrocyclone separator is connected to the liquid outlet pipe.

[0011] Furthermore, a transfer valve is installed on the transfer pipe, and the transfer valve is located near the bottom of the sleeve assembly.

[0012] Furthermore, the reflux pipe is equipped with a pneumatic valve, which is opened and closed according to the differential pressure signal to control the underflow catalyst to return to the reactor body at regular intervals.

[0013] Furthermore, the top of the reactor body is provided with a reflux port connected to the reflux pipe.

[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: By setting a conical sleeve at the bottom of the reactor, the slurry can be smoothly extracted, and most of the catalyst is physically intercepted, effectively limiting the outflow of solid catalyst and greatly reducing the load on the subsequent hydrocyclone separator and the risk of catalyst loss. The external transfer pipe is connected in series with the hydrocyclone separator to achieve efficient separation of catalyst and liquid. The separated solid catalyst is automatically returned to the reactor body for recycling through the return pipe, and the liquid enters the subsequent process. This invention solves the problems of catalyst loss and filter blockage in traditional processes, significantly improves catalyst recovery rate (>95%), and reduces production costs. It is especially suitable for the continuous separation and recycling of solid catalysts in slurry material reactors.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the installation of the bushing assembly.

[0017] In the figure, 1-reaction vessel body, 2-stirring mechanism, 3-casing assembly, 301-conical guide shroud, 302-annular baffle, 4-annular clamping cavity, 5-transfer pipe, 6-transfer valve, 7-cyclone separator, 8-liquid outlet pipe, 9-pneumatic valve, 10-reflux pipe, 11-reflux port. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2As shown in the figure, this utility model provides a solid catalyst recycling device based on sleeve barrier and cyclone separation, including a reactor body 1. A sleeve assembly 3 is installed at the bottom of the inner cavity of the reactor body 1. The sleeve assembly 3 is located below the stirring mechanism 2 inside the reactor body 1. The bottom of the sleeve assembly 3 is connected to the tangential inlet of the side of the cyclone separator 7 through the transfer pipe 5. The bottom outlet of the cyclone separator 7 is connected to the top of the inner cavity of the reactor body 1 through the return pipe 10. The overflow outlet of the cyclone separator 7 is connected to the liquid outlet pipe 8.

[0020] The sleeve assembly 3 adopts a dual flow-blocking design, which is composed of an inner conical flow guide shroud 301 and an outer annular baffle 302.

[0021] The conical guide shroud 301 adopts an inverted conical structure with a larger top and a smaller bottom. The top of the conical guide shroud 301 is open, and the bottom of the conical guide shroud 301 is connected to the transfer pipe 5 to achieve communication. The conical guide shroud 301 prevents the catalyst from settling into the dead zone at the bottom of the reactor.

[0022] The bottom of the annular baffle 302 is fixedly connected to the bottom wall of the reactor body 1, and the top of the annular baffle 302 is fixedly connected to the top of the conical guide shroud 301, forming an annular cavity 4 between the annular baffle 302 and the reactor body 1. The annular baffle 302 achieves physical interception of the catalyst, and the size of the annular cavity 4 matches the fluidization characteristics of the catalyst.

[0023] A transfer valve 6 is installed on the transfer pipe 5. The transfer valve 6 is located near the bottom of the sleeve assembly 3. The transfer valve 6 is used to control the flow of slurry from the reactor body 1 to the hydrocyclone separator 7.

[0024] The return pipe 10 is equipped with a pneumatic valve 9, which is opened and closed according to the differential pressure signal to control the underflow catalyst to return to the reactor body 1 at regular intervals, thereby realizing fully automatic circulation.

[0025] The top of the reactor body 1 is provided with a reflux port 11 connected to the reflux pipe 10.

[0026] The specific working principle of this utility model is as follows: By installing a sleeve assembly at the bottom of the reactor's inner cavity, the material flow is guided upwards. An annular baffle forms an annular clamping cavity between the annular baffle and the reactor body. This annular clamping cavity is used for the settling of solid catalyst. The sleeve assembly ensures that the slurry can be smoothly extracted while physically intercepting most of the catalyst, effectively limiting the outflow of solid catalyst and greatly reducing the load on the subsequent hydrocyclone separator and the risk of catalyst loss. An external transfer pipe is connected in series with a hydrocyclone separator to achieve efficient separation of catalyst and liquid feed. The separated solid catalyst is automatically returned to the reactor body for recycling through a return pipe, while the liquid feed enters the subsequent process.

[0027] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A solid catalyst recycling device based on sleeve barrier and cyclone separation, characterized in that: The reactor includes a reactor body (1), and a sleeve assembly (3) is installed at the bottom of the inner cavity of the reactor body (1). The sleeve assembly (3) is located below the stirring mechanism (2) inside the reactor body (1). The bottom of the sleeve assembly (3) is connected to the tangential inlet of the side of the hydrocyclone (7) through the transfer pipe (5). The bottom outlet of the hydrocyclone (7) is connected to the top of the inner cavity of the reactor body (1) through the return pipe (10). The sleeve assembly (3) is composed of an inner conical guide shroud (301) and an outer annular baffle (302).

2. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 1, characterized in that: The conical guide shield (301) adopts an inverted conical structure with a larger top and a smaller bottom. The top of the conical guide shield (301) is open, and the bottom of the conical guide shield (301) is connected to the transfer pipe (5) and achieves communication.

3. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 2, characterized in that: The bottom of the annular baffle (302) is fixed to the bottom wall of the reactor body (1), and the top of the annular baffle (302) is fixedly connected to the top of the conical guide shroud (301).

4. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 3, characterized in that: An annular baffle (302) and the reactor body (1) form an annular cavity (4).

5. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 1, characterized in that: The overflow port of the hydrocyclone separator (7) is connected to the liquid outlet pipe (8).

6. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 1, characterized in that: A transfer valve (6) is installed on the transfer pipe (5), and the transfer valve (6) is located near the bottom of the sleeve assembly (3).

7. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 1, characterized in that: The return pipe (10) is equipped with a pneumatic valve (9). The pneumatic valve (9) is opened and closed according to the differential pressure signal to control the underflow catalyst to return to the reactor body (1) at regular intervals.

8. The solid catalyst recycling device based on sleeve barrier and cyclone separation as described in claim 1, characterized in that: The top of the reactor body (1) is provided with a reflux port (11) connected to the reflux pipe (10).

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