CN212855689U

CN212855689U - Liquid-solid circulation reactor

Info

Publication number: CN212855689U
Application number: CN202021380315.0U
Authority: CN
Inventors: 蔡可迎; 周颖梅; 何昌春
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-04-02
Anticipated expiration: 2030-07-14

Abstract

A liquid-solid circulation reactor is characterized in that a guide shell (2) with openings at the upper end and the lower end is arranged in an outer shell (1), a discharge hole (4) is formed in the top of the outer shell, a catalyst inlet (5) is formed in the side surface of the lower part of the outer shell, and a discharge hole (7) is formed in the bottom of the outer shell; at the upper portion side opening of urceolus, inlet pipe (3) follow the upper port of this opening entering draft tube and the lower port of perpendicular downwardly extending draft tube, set up and set up a plurality of decurrent jet orifices I (31) on the pipe wall of the inside inlet pipe of draft tube, liquid distributor (6) is connected to the bottom of inlet pipe, sets up a plurality of decurrent jet orifices II (61) at liquid distributor's lower terminal surface. The utility model discloses simple structure, convenient operation can avoid the catalyst to block up the jet orifice, improves production efficiency, and can be applicable to liquid solid phase catalytic reaction.

Description

Liquid-solid circulation reactor

Technical Field

The utility model relates to a reactor, in particular to a liquid-solid circulation reactor, which belongs to the technical field of catalytic reaction engineering.

Background

The loop reactor is a process-enhanced reaction device, can obtain higher mixing efficiency under relatively lower energy consumption, enhances mass transfer and heat transfer effects, is suitable for a multiphase reaction system, and is widely used for gas-liquid, liquid-liquid, gas-liquid-solid and liquid-solid reactions; wherein the gas-liquid-solid three-phase loop reactor is widely applied to industrial production, in particular to sewage treatment. The three-phase loop reactor is generally of an airlift type, namely, gas enters from the bottom of the reactor to drive fluid to carry out internal circulation (Haoqingsheng, Fangjing, unfolded to build the microporous gas distributor of the airlift loop bioreactor, structure optimization and performance, chemical development, 2020, 39 (S1): 64-68.); the distributor of the reactor is arranged at the bottom of the reactor, the spray holes are upward, and when the reaction is stopped, the catalyst falls into the spray holes and is easy to block the spray holes; for example, an "airlift three-phase circulating-flow reactor" disclosed as CN205222790U in 2016, 5, 11, and an "airlift circulating-flow reactor" disclosed as CN204656509U in 2015, 9, 23, and an "airlift circulating-flow reactor" disclosed as CN202410629 in 2012, 9, 5, and the injection holes of the gas and liquid distributors of the airlift circulating-flow reactor are all upward, so that when the reaction is stopped, the catalyst can fall into the injection holes and easily block the injection holes; and the above is for liquid-solid phase reactions, and loop reactors are rarely used.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a liquid-solid circulation reactor, simple structure, convenient operation can avoid the catalyst to block up the jet orifice, and can be applicable to liquid-solid phase catalytic reaction.

In order to achieve the purpose, the utility model provides a liquid-solid circulation reactor, which comprises an outer cylinder, wherein a guide cylinder with openings at the upper end and the lower end is arranged in the outer cylinder; at the upper portion side opening of urceolus, the inlet pipe gets into the upper port of draft tube and the lower port that stretches out the draft tube perpendicularly downwards from this opening, and sets up a plurality of opening slant decurrent jet orifices I on the pipe wall of the inlet pipe of draft tube inside, and liquid distributor is connected to the bottom of inlet pipe, sets up a plurality of opening decurrent jet orifices II at liquid distributor's lower terminal surface.

As a further improvement of the utility model, the included angle between the injection hole I and the axis of the feeding pipe is 15-45 degrees, and the diameter of the injection hole I is 1-8 mm.

As a further improvement of the utility model, the bottom surface of the liquid distributor is an arc surface.

As a further improvement of the utility model, the injection holes II are uniformly arranged on the arc surface of the liquid distributor, and the diameter of the injection holes II is 1-8 mm.

As a further improvement of the utility model, the injection hole II at the center of the arc surface is vertical to the horizontal plane, and the included angles between the other injection holes II and the axis of the feeding pipe are between 10 and 45 degrees.

Compared with the prior art, the utility model discloses an opening in the upper portion side of urceolus to get into the upper port of draft tube and extend the lower port of draft tube perpendicularly downwards from this opening part with the inlet pipe, set up a plurality of jet orifices I that slant down in the vertical section of inlet pipe, can promote liquid circulation, the liquid distributor is connected to the bottom of inlet pipe, set up a plurality of jet orifices II that slant down in the lower terminal surface of liquid distributor, can prevent that catalyst from stopping up jet orifice II; the utility model discloses simple structure, convenient operation can avoid the catalyst to block up the jet orifice, improves production efficiency, and can be applicable to liquid solid phase catalytic reaction.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the feed tube configuration;

fig. 3 is a schematic structural view of a liquid distributor.

In the figure: 1. outer cylinder, 2, draft tube, 3, inlet pipe, 31, jet orifice I, 4, discharge gate, 5, catalyst import, 6, liquid distributor, 61, jet orifice II.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1-fig. 3, a liquid-solid circulation reactor comprises an outer cylinder 1, a guide cylinder 2 with openings at the upper and lower ends is arranged inside the outer cylinder 1, a discharge port 4 for discharging is arranged at the top of the outer cylinder 1, a catalyst inlet 5 for adding a catalyst is arranged at the lower side of the outer cylinder 1, and a discharge port 7 for discharging is arranged at the bottom of the outer cylinder 1; at the upper portion side opening of urceolus 1, inlet pipe 3 gets into the upper port of draft tube 2 and the lower port that stretches out draft tube 2 perpendicularly downwards from this opening, sets up a plurality of opening oblique decurrent jet orifices I31 on the pipe wall of inlet pipe 3 inside draft tube 2, and inlet pipe 3 stretches out the bottom connection liquid distributor 6 of draft tube 2, sets up a plurality of opening decurrent jet orifices II 61 at the lower terminal surface of liquid distributor 6.

In order to promote the liquid circulation, the included angle between the injection hole I31 and the axis of the feeding pipe is set between 15 degrees and 45 degrees, and the diameter of the injection hole I31 is 1 mm to 8 mm.

The bottom surface of the liquid distributor 6 is a circular arc surface.

The injection holes II 61 are uniformly arranged on the arc surface of the liquid distributor 6, and the diameter of the injection holes II 61 is 1-8 mm.

The injection holes II 61 positioned in the centers of the circular arc surfaces are vertical to the horizontal plane, and the included angles between the other injection holes II 61 and the axial line of the feeding pipe are 10-45 degrees.

The ratio of the height to the diameter of the outer cylinder 1 is 6-10; the ratio of the height to the diameter of the guide shell 2 is 6-10; the ratio of the diameter of the guide shell 2 to the diameter of the outer shell 1 is 0.6-0.8.

The method specifically comprises the following steps:

the utility model discloses in, the process of adding, shifting out and flowing in the reactor of material is as follows: before the first reaction, catalyst is added through a catalyst inlet 5, raw material liquid is pumped into a feed pipe 3 by a pump, part of the liquid is obliquely sprayed downwards through a spray hole I31 on the feed pipe 3 to push materials in a guide cylinder 2 to flow downwards, the rest of the liquid in the feed pipe 3 enters a liquid distributor 6 and is sprayed downwards through a spray hole II 61, the catalyst is fluidized and is fully mixed, the sprayed liquid impacts the bottom of an outer cylinder 1 and then flows upwards outside the guide cylinder 2, the materials are circulated, the material flow rate at the upper part of a reactor is slowed, the catalyst naturally settles down, the catalyst continuously participates in the circulating reaction of the materials, and the liquid materials after the reaction flow out through a discharge hole 4.

The utility model discloses a liquid-solid circulation flow reactor can be applicable to liquid-solid phase catalytic reaction and sewage treatment etc. compare in traditional circulation flow reactor, the utility model discloses inlet pipe 3 in draft tube 2 sets up a plurality of jet orifices I31, can strengthen the circulation of material, sets up decurrent jet orifice II 61 at liquid distributor 6, can prevent effectively that the catalyst from blockking up jet orifice II 61.

Claims

1. A liquid-solid circulation reactor comprises an outer cylinder (1), and is characterized in that a guide cylinder (2) with openings at the upper end and the lower end is arranged in the outer cylinder (1), a discharge hole (4) is arranged at the top of the outer cylinder (1), a catalyst inlet (5) is arranged on the side surface of the lower part of the outer cylinder (1), and a discharge hole (7) is arranged at the bottom of the outer cylinder (1); at the upper portion side opening of urceolus (1), inlet pipe (3) follow the upper port of this opening entering draft tube (2) and the lower port of perpendicular downwardly extending draft tube (2), set up and set up a plurality of openings oblique decurrent jet orifices I (31) on the pipe wall of inlet pipe (3) inside draft tube (2), liquid distributor (6) is connected to the bottom of inlet pipe (3), set up a plurality of openings jet orifices II (61) that descend downwards at the lower terminal surface of liquid distributor (6).

2. The liquid-solid loop reactor according to claim 1, wherein the angle between the injection orifice i (31) and the axis of the feed pipe is between 15 and 45 °, and the diameter of the injection orifice i (31) is between 1 and 8 mm.

3. The liquid-solid loop reactor according to claim 1 or 2, wherein the bottom surface of the liquid distributor (6) is a circular arc surface.

4. The liquid-solid loop reactor according to claim 3, characterized in that the injection holes II (61) are uniformly arranged on the circular arc surface of the liquid distributor (6), and the diameter of the injection holes II (61) is 1-8 mm.

5. The liquid-solid loop reactor according to claim 3, wherein the injection holes II (61) at the center of the circular arc surface are vertical to the horizontal plane, and the included angle between the other injection holes II (61) and the axis of the feeding pipe is 10-45 degrees.