CN214288151U

CN214288151U - Radial reaction kettle

Info

Publication number: CN214288151U
Application number: CN202022532904.2U
Authority: CN
Inventors: 李梦晨; 崔岩; 高善彬; 于宏悦; 沈雨歌; 王晓化; 沈宜泓; 李发永; 迟克彬; 张上
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-09-28
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a radial reation kettle for studying molecular sieve crystallization process, include: the device comprises a kettle body, a kettle cover, a stirrer and a plurality of thermocouples, wherein the kettle body is provided with an opening, and the height-diameter ratio of the kettle body is 1/2-1/10; the kettle cover covers the opening of the kettle body; the stirrer comprises a stirring shaft and a stirring paddle, the stirring shaft penetrates through the kettle cover to the interior of the kettle body and is connected with the stirring paddle, and the stirring paddle is positioned in the kettle body; the number of the thermocouples is n, n is 2-10, the distance from the stirring shaft to the kettle wall of the kettle body is divided into n +1 equal parts, and the thermocouples are respectively arranged on equal division points. The radial reaction kettle system monitors and researches the radial temperature distribution, mass transfer effect and product change in the reaction process.

Description

Radial reaction kettle

Technical Field

The utility model relates to a chemical experiment equipment technique, in particular to a crystallization filter for researching molecular sieve

Radial reaction kettle with mass and heat transfer influence in the process.

Background

The production process of the molecular sieve used in the petrochemical industry at present is mostly a hydrothermal synthesis method, namely, the molecular sieve is synthesized by using chemical reactions of substances in aqueous solution under the conditions of the temperature of 100-250 ℃ and the pressure of 1-4 MPa. Many molecular sieves (such as ZSM-23, SAPO-11, SAPO-31 and the like) are greatly influenced by factors such as temperature change, pressure, stirring and the like in the crystallization process, so that mixed crystals or crystal transformation is easily generated, and even the formation and transformation of some molecular sieves are in the temperature rising and falling process. Therefore, systematic research on the influence of factors such as mass transfer, heat transfer and the like in the crystallization reaction process of the molecular sieve is needed, and the design of a special reaction kettle for the research is also important.

At present, some reports about such molecular sieve crystallization reaction kettle or related designs are reported in the existing literature. Patent CN201711290936 (a dynamic and static dual-purpose crystallization reactor for zeolite molecular sieves) designs a dynamic and static dual-purpose crystallization reactor for zeolite molecular sieves, and a single-sided permanent magnet and a group of double-sided permanent magnets driven by a driving motor are arranged above a synthesis reaction kettle to drive the reaction kettle to move and stop, so that the device can realize two reaction states, namely dynamic and static states. Patent CN 20182089708085 proposes a Y-type molecular sieve heating spiral reactor with a stable structure, and specifically, two mutually meshed conveying shafts and a transmission system are designed in the reactor, so as to solve the problems of scaling on the stirring blades and the shafts in the production process of the Y-type molecular sieve, and enable the production of the molecular sieve to be stable and run for a long period. Through set up electromagnetic heating device on the cauldron body in patent CN201510443001 (a magnetic reaction cauldron), realize heating the iron plate on the puddler to the realization is to the even heating of cauldron body reactant and avoid the material to produce the problem of coking because of the heating. Patent CN201811027327 creatively designs a stirring driving structure, improves stirring efficiency and performance, and can achieve the effect of stirring without dead angles. Patent CN 201720696995-kettle type reactor designs the overall arrangement and the feed inlet of the feed pipe, has solved the foaming problem and the material blockage pipeline problem that produce when viscosity is big, tension is little material gets into reation kettle. But no relevant design or patent for researching the influence of temperature, heat transfer and mass transfer of the reaction kettle in the reaction process is available.

Therefore, how to design a reaction kettle to be suitable for a radial reaction kettle for researching mass transfer and heat transfer influences in the crystallization process of the molecular sieve is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

According to the deficiency in the prior art, the utility model aims to provide a radial reation kettle of research molecular sieve crystallization in-process mass transfer, heat transfer influence, influence that can systematic study mass transfer and heat transfer in the reation kettle in the reaction process is right.

The utility model provides a pair of radial reation kettle, include:

the kettle body is provided with an opening, and the height-diameter ratio of the kettle body is 1/2-1/10;

the kettle cover is covered on the opening of the kettle body, and a plurality of online sampling ports are arranged on the kettle cover;

the stirrer comprises a stirring shaft and a stirring paddle, the stirring shaft penetrates through the kettle cover to the interior of the kettle body and is connected with the stirring paddle, and the stirring paddle is positioned in the kettle body;

the number of the thermocouples is n, n is 2-10, the distance from the stirring shaft to the kettle wall of the kettle body is divided into n +1 equal parts, the thermocouples are respectively arranged on equal division points, and the positions of the thermocouples coincide with the positions of the online sampling ports.

In one embodiment, the thermocouple and the online sampling port are located on the same horizontal line.

In one embodiment, the stirrer is installed in the center of the kettle body.

In one embodiment, the height-diameter ratio of the kettle body is 1/4-1/7.

In one embodiment, the radial reactor is a jacket type heatable reactor.

In an embodiment, the heating device is further arranged and is positioned on the side surface and/or the bottom of the kettle body.

In one embodiment, the number of the thermocouples is n, and n is 4 to 7.

In one embodiment, the stirring paddle is one or more of paddle type, propeller type, anchor type and frame type.

Compared with the prior art, the system has the following advantages: the radial reaction kettle is characterized by having a low height-diameter ratio (H/D) and a plurality of thermocouples for measuring temperature and sampling on line. The larger diameter of the reaction kettle enables the heat transfer and mass transfer effects in the radial direction to be more obvious, and further the observation is easy. The lower height of the reaction kettle reduces the required raw material amount; the thermocouples, the online sampling ports and the arrangement thereof can monitor and research the temperature distribution, the mass transfer effect and the product change in the radial direction in the reaction process systematically.

The present invention can be modified and varied by those skilled in the art without departing from the spirit and essence of the present invention, and all such modifications and variations are intended to be within the scope of the claims.

Drawings

Fig. 1 is a structural diagram of the present invention.

Fig. 2 is a plan view of the present invention.

Reference numerals

1 high-pressure reaction kettle body

2 heating jacket

3 stirring paddle

4 thermocouple

5 on-line sampling port

6 kettle cover

Height of H reaction kettle

Diameter of reaction vessel

Detailed Description

The detailed description and technical contents related to the present invention are described below with reference to the accompanying drawings:

the utility model aims to provide a radial reation kettle of research molecular sieve crystallization in-process mass transfer, heat transfer influence can the influence of mass transfer and heat transfer in the systematic study reaction sequence reation kettle.

This novel radial reation kettle who provides includes: the device comprises a kettle body, a kettle cover 6, a stirring paddle 3, a thermocouple 4, an online sampling port 5 and a heating device; the kettle body is provided with an opening, and the height-diameter ratio of the kettle body is 1/2-1/10;

the kettle cover 6 is covered on the opening of the kettle body; a plurality of online sampling ports are arranged on the kettle cover;

the stirrer comprises a stirring shaft and a stirring paddle 3, the stirring shaft penetrates through the kettle cover 6 to the interior of the kettle body and is connected with the stirring paddle 3, and the stirring paddle 3 is positioned in the kettle body;

and the number of the thermocouples 4 is n, wherein n is 2-10, the distance from the stirring shaft to the kettle wall of the kettle body is divided into n +1 equal parts, and the thermocouples 4 are respectively arranged on equal division points.

The thermocouple 4 and the online sampling port 5 are positioned on the same horizontal line. The stirrer is arranged in the center of the kettle body. The thermocouples 4 are all located on the same horizontal line. And a plurality of online sampling ports 5 are arranged on the kettle cover 6, and the positions of the thermocouples 4 coincide with the positions of the online sampling ports 5.

The number of the thermocouples 4 is 3-10, and the thermocouples 4 are arranged in a straight line shape at equal intervals from the kettle edge of the kettle body to the kettle center (stirring shaft); the number of the online sampling ports 5 is 3-10, and the thermocouples 4 are arranged in a linear shape at equal intervals from the edge of the kettle to the center of the kettle, namely, the stirring shaft; wherein the height-diameter ratio of the kettle body is preferably 1/4-1/7.

Wherein, the heating device is positioned on the side surface and/or the bottom of the kettle body.

The heating device is a heating jacket 2, and the heating area of the heating jacket 2 can be the side surface or/and the bottom of the kettle.

In one embodiment, the radial reactor is a jacket type heatable reactor.

Wherein, the number of the thermocouples 4 is preferably 4-7.

Wherein, the number of the online sampling ports 5 is preferably 4-7.

Wherein, the stirring paddle 3 is one of paddle type, propelling type, anchor type and frame type.

The utility model can be used in the following ways with the following figures:

the reaction raw materials are added into the reaction kettle, and then the kettle cover 6 is closed for sealing, so that heating and stirring can be started. Wherein the type and size of the stirring blade 3 and the heating jacket 2 are selected according to the research purpose and the actual requirement. The radial temperature and temperature gradient in the reaction kettle can be observed in real time by a plurality of thermocouples 4 in the reaction process. In addition, the mass transfer condition can be researched by carrying out real-time sampling analysis through the online sampling port 5, and the influence of heat transfer and temperature gradient on reaction products can be analyzed due to the parallel and corresponding distribution of the thermocouple 4 and the sampling port.

As can be seen from the description of the operation process, the novel use realizes the following technical effects: the radial reaction kettle is characterized by having a low height-diameter ratio (H/D) and a plurality of thermocouples 4 for measuring temperature and online sampling ports. The larger diameter of the reaction kettle enables the heat transfer and mass transfer effects in the radial direction to be more obvious, and further the observation is easy. The lower height of the reaction kettle reduces the required raw material amount; the thermocouples, the online sampling ports 5 and the arrangement thereof can monitor and research the radial temperature distribution, the mass transfer effect and the product change in the reaction process systematically.

The above description is only a preferred embodiment of the present invention, and it should be noted that: to the ordinary skilled person in this technical field, can also make a plurality of improvements under the prerequisite of not deviating from the utility model, this is improved and should be regarded as the utility model discloses a scope of protection down also.

Claims

1. A radial reactor, comprising:

2. The radial reactor of claim 1, wherein said thermocouple, in-line sampling port are located on the same horizontal line.

3. The radial reactor of claim 1, wherein said agitator is centrally mounted within said body.

4. The radial reaction kettle of claim 1, wherein the height to diameter ratio of the kettle body is 1/4-1/7.

5. The radial reactor of claim 1, wherein said radial reactor is a jacket-type heatable reactor.

6. The radial reactor of claim 1, further comprising a heating device located at a side and/or bottom of the reactor body.

7. The radial reactor of claim 1, wherein the number of thermocouples is n, and n is 4-7.

8. The radial reactor of claim 1, wherein the paddles are one or more of paddle, propeller, anchor, and frame.