Refining kettle for producing 2-ethyl anthraquinone and refining process of 2-ethyl anthraquinone

An ethyl anthraquinone and refining kettle technology, applied in the field of 2-ethyl anthraquinone preparation, can solve the problems of uneven heating, affecting the refining process, easy coking of residues, etc. The effect of prolonging the production cycle

Pending Publication Date: 2022-05-13
重庆毂运科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a refining kettle for 2-ethylanthraquinone production and its refining process for 2-ethylanthraquinone, so as to solve the problem of uneven heating of the existing 2-ethylanthraquinone during the refining process, resulting in The residue is easy to coke, which affects the whole refining process

Method used

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  • Refining kettle for producing 2-ethyl anthraquinone and refining process of 2-ethyl anthraquinone

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Please refer to figure 1 , the refining kettle for the production of 2-ethylanthraquinone of the present invention includes: a kettle body 10 and a tower section 20, the tower section 20 is connected to the upper end of the kettle body 10 and communicated with the kettle body 10. In the present invention, the connection between the kettle body 10 and the tower section 20 is fixed by a connecting piece (not indicated in the figure), and the connecting piece includes a connecting flange for connecting, a gasket for connecting, and a screw for connecting and fixing. Posts and Nuts. The connecting piece facilitates the installation and fixation of the kettle body 10 and the tower section 20, and is also convenient for disassembly and maintenance.

[0034] The outer wall of the kettle body 10 is provided with a jacket 30 along the body of the kettle body 10, and a filling space 31 is formed between the jacket 30 and the kettle body 10, and the filling space 31 is filled wit...

Embodiment 2

[0043] The refining process of 2-ethylanthraquinone of the present invention adopts the refining kettle for the production of 2-ethylanthraquinone of the above-mentioned embodiment 1, comprising the following steps:

[0044] Fill the filling space with heat transfer oil at a temperature of 240-260°C from the heat transfer oil inlet, discharge the heat transfer oil from the heat transfer oil outlet, preheat the kettle body, and continuously replenish heat transfer oil in circulation;

[0045] Under a vacuum environment, the 2-ethylanthraquinone crude product is dropped into the described still body from the described feeding port, starts the described stirrer, utilizes the heat that the conduction oil transmits to the 2-ethylanthraquinone in the described still body Crude products are refined;

[0046] The 2-ethylanthraquinone gas generated during the refining process is filtered through the grid plate and the wire mesh packing layer in sequence, and then discharged from the ga...

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Abstract

The invention discloses a refining kettle for 2-ethyl anthraquinone production and a refining process of 2-ethyl anthraquinone, and belongs to the technical field of 2-ethyl anthraquinone preparation. The reaction kettle comprises a kettle body and a tower section which is connected to the upper end of the kettle body and is communicated with the kettle body, the outer wall of the kettle body is sleeved with a jacket along the body of the kettle body, a filling space is formed between the jacket and the kettle body, and the filling space is filled with heat conducting oil; and the side wall of the kettle body is obliquely and downwards provided with a stirrer. The stirrer is additionally arranged on the side wall of the kettle body, so that heat transfer of reaction materials is uniform, the phenomenon that reaction vapor carries liquid is reduced, the overall rectification time is shortened, and meanwhile, coking of the materials is slowed down. Meanwhile, the gas-liquid field in the second-stage high-vacuum rectification process is reduced, so that the reaction is more stable. The materials are heated under the stirring condition, the whole heating is more uniform, material coking can be effectively slowed down, and the production period of the refining kettle can be prolonged. Coked materials are discharged in a high-temperature state, the refining kettle does not need to be cooled and overhauled, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of 2-ethylanthraquinone preparation, in particular to a refining kettle for 2-ethylanthraquinone production and a refining process for 2-ethylanthraquinone. Background technique [0002] 2-Ethylanthraquinone is an important organic chemical intermediate, which is orange or yellow solid, and its molecular formula is C 16 h 12 o 2 , the relative molecular mass is 236.27, and the melting point is 108-113°C. 2-Ethylanthraquinone is mainly used in the industrial production of hydrogen peroxide produced by anthraquinone method. It is an indispensable organic intermediate for the reaction and can greatly reduce the production cost of hydrogen peroxide. 2-Ethylanthraquinone is also used in the preparation of photosensitive compounds and is a sensitizer for photopolymerization or inhibition polymerization; it is also used in the fields of information dyes and optical sieve resins; at the same time, it occupies an i...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01J19/00B01D3/10B01D3/14B01D3/00C07C46/10C07C50/18
CPCB01J19/18B01J19/0053B01D3/009B01D3/14B01D3/10C07C46/10C07C2603/24C07C50/18
Inventor 江立华脱小龙刘剑
Owner 重庆毂运科技有限公司
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