CN215428936U

CN215428936U - Low-temperature shift catalyst reaction tank

Info

Publication number: CN215428936U
Application number: CN202121320058.6U
Authority: CN
Inventors: 张涛; 张金凤; 徐淼; 康磊; 冯海军; 崔永杰; 宋文筠; 马艳宁; 岳勇; 刘肖南; 戴承昊
Original assignee: Tianjin Academy of Ecological and Environmental Sciences
Current assignee: Tianjin Academy of Ecological and Environmental Sciences
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-07
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a low-temperature shift catalyst reaction tank, which comprises: the device comprises a speed reducer, a bracket, an inspection operation hole, a temperature control system interface, a tank body, a sampling pipe interface, an external stirring part, a bevel baffle, an internal stirring part, a discharge opening, a feed inlet, a liquid level system interface, a vent sludge hopper and the like. The tank body is oval, a static pressure system interface is arranged on the side wall of the tank body pool, a sampling pipe interface is arranged on the tank body, and the middle part of the tank body adopts an internal and external stirring combination mode; eight folding angle baffles are arranged on the outer stirrer in a staggered mode. The bottom of the tank body is provided with a slope structure, and the slope is 10%. The typical combination of the internal and external stirring and the bevel baffle plate of the reaction tank can effectively lead the reaction materials stuck on the wall of the reaction tank to come down from the upper part of the tank wall, thereby avoiding the defect that the solid phase addition can not effectively utilize the raw materials. The stirrer of the utility model can generate good heat conduction, is not influenced by material characteristics, and can play the roles of buffering and continuous re-reaction on the item mixing.

Description

Low-temperature shift catalyst reaction tank

Technical Field

The utility model belongs to the technical field of hydrogen production and catalysts by carbon monoxide conversion, and relates to a low-temperature conversion catalyst reaction tank.

Background

The low-temperature shift catalyst is the most critical economic catalyst in hydrogen production, ammonia production and urban gas industries. And due to the emergence of the energy crisis, the energy consumption of the synthetic ammonia is first required to be reduced by various new processes. The high-activity low-temperature shift catalyst is a key index, so that the good high-activity low-temperature shift catalyst has great economic significance. The reaction device for preparing the low-temperature shift catalyst is more critical for producing the catalyst.

Wet chemical preparation is a common method for preparing low temperature shift catalysts. The main method is that precipitator is added into metal salt solution (or metal salt solution is added into the precipitator) to generate insoluble metal salt or metal hydrate, the insoluble metal salt or metal hydrate is precipitated from the solution, and then the catalyst or catalyst carrier is prepared by the procedures of filtering, washing, drying, roasting, forming, activating and the like.

The low-temperature shift catalyst preparation device is key equipment for improving the activity of the catalyst and products, and the complicated adding procedures increase the difficulty for controlling the reaction by workers, so that the structure of the wet preparation device is effectively improved and designed, the raw materials can be fully mixed, the efficiency of the coprecipitation reaction of a catalyst stock solution and the generation of a high-efficiency catalyst can be improved, and the workload of the workers is reduced.

Disclosure of Invention

The utility model aims to design a catalyst preparation device which has simple structure, strong controllability and mixing and re-reaction functions so as to make up for the defects of the prior art.

In order to achieve the purpose, the utility model discloses the following technical contents:

a low temperature shift catalyst reaction tank, characterized in that it comprises: the device comprises a speed reducer 1, a support 2, an inspection operation hole 3, a temperature control system interface 4, a tank body 5, a sampling pipe interface 6, an external stirrer 7, a bevel baffle 8, an internal stirrer 9, a discharge port 10, a feed inlet 11, a liquid level system interface 12 and a vent 13, wherein the sludge hopper 14 is arranged on the tank body; wherein

The top of the tank body 5 is provided with a speed reducer 1, a bracket 2, an inspection operation hole 3, a temperature control system interface 4 and a feed inlet 11, the side wall of the tank body pool is provided with a liquid level system interface 12, and the tank body of the reaction tank is provided with a sampling pipe interface 6;

the middle part of the tank body adopts a combination form of external stirring 7 and internal stirring 9; a bevel baffle 8 is arranged on the outer stirring 7;

jar body bottom sets up the slope structure, and the slope is 10%, and jar body bottom of a pool middle part sets up sludge bucket 14, and its diameter is 300mm, and sludge bucket lateral wall and horizontal direction angulation 60, sludge bucket bottom set up discharge opening 10, and drain 13 sets up on sludge bucket lateral wall.

Eight bevel baffles 8 are arranged and are arranged in a staggered mode, four baffles are arranged on two sides of an outer stirring device 7 respectively, the thickness of each baffle is 10mm, and the width of each baffle is 1/12-1/10 of the diameter of a reaction kettle.

Set up sampling tube interface 6 at the retort jar body and refer to: a first sampling port 6-1, a second sampling port 6-2 and a third sampling port 6-3 are arranged at the upper part, the middle part and the lower part of the tank body of the reaction tank.

The tank body 5 is oval; the diameter of the inspection operation hole 3 is 300mm-500 mm.

The diameter of an outer stirrer in the outer stirrer 7 is generally 2/3-9/10 of the inner diameter of the reactor, and the rotating speed of a speed reducer is generally 15-100 r/min; the paddle width and the agitator diameter ratio of interior stirring 9 are 0.1~0.95, and interior stirring 9 sets up 2 layers, and stirring paddle and dog-ear baffle 8 staggered arrangement stir height and diameter ratio and be 1~ 0.48.

The utility model is described in more detail below:

the low-temperature shift catalyst reaction device comprises a speed reducer 1, a support 2, an inspection operation hole 3, a temperature control system interface 4, a tank body 5, a sampling pipe interface 6, an external stirrer 7, a bevel stirrer 8, an internal stirrer 9, a discharge opening 10, a feed inlet 11, a liquid level system interface 12, a vent 13 and a sludge hopper 14.

The tank top is provided with a speed reducer 1, a support 2, an inspection operation hole 3, a temperature control system interface 4 and a feeding hole 11. Most of the common low-temperature shift catalysts are CuO/ZnO/Al₂O₃The catalyst and the raw materials are more in variety, so the number of the feed inlets can be adjusted according to the actual addition of the raw materials, and the raw materials can be added in a liquid phase manner or a solid phase manner. The tank body adopts an oval design, so that dead corners or accumulated materials in the tank are avoided. The diameter of the tank top inspection operation hole can be adjusted according to the diameter of the tank, and the diameter is between 300mm and 500 mm. Meanwhile, an internal and external stirring combination mode is adopted, the continuous re-reaction function of the reaction tank is improved, meanwhile, the bevel baffles are arranged on the external stirring mode and are arranged in a staggered mode, the reaction efficiency is better improved, and the condition of reaction dead angles is also reduced. The bevel baffle adopts eight, stirs four respectively in each side outside, and the setting distance can evenly be arranged according to the jar liquid level, and baffle thickness is 10mm, and the width is between 1/12~1/10 of retort diameter, and outer agitator diameter generally gets 2/3 ~ 9/10 of reactor internal diameter, and the speed reducer rotational speed is generally 15 ~ 100 r/min. The rotating speed of the speed reducer can be adjusted according to the size state of the catalyst coprecipitation agglomeration. Internal stirring paddle width and stirringThe ratio of the diameter of the stirrer is 0.1-0.95, 2 layers of inner stirring are arranged, the stirring blades and the bevel baffles are arranged in a staggered mode, and the ratio of the stirring height to the diameter is 1-0.48. The raw material of the low-temperature shift catalyst is mostly added in batches. The stirring mode not only improves the mixing efficiency of each batch of raw materials. The bottom of the reaction tank is provided with a slope structure, and the slope is 10%. The middle part of the tank bottom is provided with a sludge hopper 14, the angle between the side wall of the sludge hopper and the horizontal direction is not less than 60 degrees, and the discharging of the catalyst matrix sediment is convenient.

The reaction tank of the utility model is made of stainless steel, glass steel or other corrosion-resistant materials. The reaction tank has the characteristics of corrosion resistance, temperature fluctuation resistance and high strength.

Compared with the prior art, the low-temperature shift catalyst reaction tank disclosed by the utility model has the positive effects that:

(1) the method is beneficial to the mixing efficiency of multiple batches of reactions and reduces the reaction time.

(2) If a powder solid adding mode is adopted, the combination of the internal and external stirring and the bevel baffle plate can effectively lead the reaction materials stuck on the wall of the reaction tank to come down from the tank wall, thereby avoiding the defect that the solid adding can not effectively utilize the raw materials. And (3) when the stirring system rotates at a lower rotating speed, the stirrer can generate good heat conduction.

(4) Is not influenced by material characteristics, and can play the roles of buffering and continuously re-reacting for the mixture.

Drawings

FIG. 1 is a schematic diagram of a low temperature swing catalyst reactor tank configuration; wherein

1. Speed reducer 2, support 3, inspection operation hole 4, temperature control system interface 5, jar body

6. A sampling tube interface 6-1, a first sampling 6-2, a second sampling port 6-3 and a third sampling port

7. External stirring 8, angle baffle 9, internal stirring 10 and discharge opening

11. A feed inlet 12, a liquid level system interface 13, a vent 14 and a sludge hopper.

Detailed Description

The utility model is described below by means of specific embodiments. Unless otherwise specified, the technical means used in the present invention are well known to those skilled in the art. In addition, the embodiments should be considered illustrative, and not restrictive, of the scope of the utility model, which is defined solely by the claims. It will be apparent to those skilled in the art that various changes and modifications can be made in these embodiments without departing from the spirit and scope of the utility model.

Example 1

A low temperature shift catalyst reaction tank comprising: the device comprises a speed reducer 1, a support 2, an inspection operation hole 3, a temperature control system interface 4, a tank body 5, a sampling pipe interface 6, an external stirrer 7, a bevel baffle 8, an internal stirrer 9, a discharge port 10, a feed inlet 11, a liquid level system interface 12 and a vent 13, wherein the sludge hopper 14 is arranged on the tank body;

wherein

The whole tank body 5 is oval, the top of the tank body is provided with a speed reducer 1, a support 2, an inspection operation hole 3 (the diameter is 400 mm), a temperature control system interface 4 and a feed inlet 11, the side wall of a tank body pool is provided with a liquid level system interface 12, and meanwhile, a sampling pipe interface 6 is arranged on the tank body of the reaction tank; the upper part, the middle part and the lower part are respectively provided with a first sampling port 6-1, a second sampling port 6-2 and a third sampling port 6-3.

The middle part of the tank body adopts a combination form of external stirring 7 and internal stirring 9; eight folding angle baffles 8 are arranged on the outer stirring 7; adopt staggered arrangement, respectively set up four on outer stirring 7 both sides, baffle thickness is 10mm, and the width is 1/12 of reation kettle diameter.

The diameter of an outer stirrer in the outer stirrer 7 is 2/3 of the inner diameter of the reactor, and the rotating speed of a speed reducer is generally 75 r/min; the paddle width and the agitator diameter ratio of internal stirring 9 are 0.5, and internal stirring 9 sets up 2 layers, and stirring paddle and dog-ear baffle 8 staggered arrangement stir height and diameter ratio and be 0.5.

Claims

1. A low temperature shift catalyst reaction tank, characterized in that it comprises: the device comprises a speed reducer (1), a support (2), an inspection operation hole (3), a temperature control system interface (4), a tank body (5), a sampling pipe interface (6), an external stirring device (7), a bevel baffle (8), an internal stirring device (9), a discharge opening (10), a feed inlet (11), a liquid level system interface (12) and a vent hole (13), and a sludge hopper (14);

wherein

The top of the tank body (5) is provided with a speed reducer (1), a bracket (2), an inspection operation hole (3), a temperature control system interface (4) and a feed inlet (11), the side wall of the tank body pool is provided with a liquid level system interface (12), and the tank body of the reaction tank is provided with a sampling pipe interface (6);

the middle part of the tank body adopts a combination form of external stirring (7) and internal stirring (9); a bevel baffle (8) is arranged on the outer stirring device (7);

the bottom of the tank body is provided with a slope structure, the slope is 10%, the middle part of the bottom of the tank body is provided with a slope sludge hopper (14), the diameter of the slope sludge hopper is 300mm, the side wall of the sludge hopper forms an angle of 60 degrees with the horizontal direction, the bottom of the sludge hopper is provided with a discharge opening (10), and a vent opening (13) is arranged on the side wall of the sludge hopper.

2. The low-temperature shift catalyst reaction tank as claimed in claim 1, wherein eight baffle plates (8) are arranged in a staggered manner, four baffle plates are arranged on two sides of the outer stirrer (7), the thickness of each baffle plate is 10mm, and the width of each baffle plate is 1/12-1/10 of the diameter of the reaction kettle.

3. The low-temperature shift catalyst reaction tank as claimed in claim 1, wherein the sampling pipe joint (6) arranged on the reaction tank body is characterized in that: a first sampling port (6-1), a second sampling port (6-2) and a third sampling port (6-3) are arranged at the upper part, the middle part and the lower part of the tank body of the reaction tank.

4. A low temperature shift catalyst reactor tank as claimed in claim 1, wherein said tank body (5) is oval; the diameter of the inspection operation hole (3) is 300mm-500 mm.

5. The low-temperature shift catalyst reaction tank according to claim 1, characterized in that the diameter of the outer stirrer in the outer stirrer (7) is 2/3-9/10 of the inner diameter of the reactor, and the rotating speed of the speed reducer is 15-100 r/min; the paddle width of interior stirring (9) is 0.1~0.95 with agitator diameter ratio, and interior stirring (9) sets up 2 layers, and stirring paddle and dog-ear baffle (8) staggered arrangement stir height and diameter ratio be 1~ 0.48.