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Production process of phenol products

A production method and product technology, applied in the field of coal chemical industry, can solve the problems of undiscovered literature reports with the same research, and achieve the effect of reducing energy consumption and saving investment

Inactive Publication Date: 2007-06-06
ANGANG STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Relevant documents have introduced the method for refining crude phenol, but none of them mentions the new point of this topic, "Using crude phenol as a raw material to obtain phenol (content greater than 98.6%, crystallization point greater than 40°C) through one-time distillation", ortho Cresol fraction (ortho-cresol content greater than 50%), m-p-cresol (m-p-cresol content greater than 50%) and industrial xylenol" from the same literature
At the same time, there is no similar content in Chaxin Point 2 that "the ortho-cresol fraction is rectified to obtain ortho-cresol (content greater than 96%)".
[0009] To sum up, the domestic literature search has not found the same literature report as this research

Method used

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Embodiment Construction

[0018] A method for producing phenolic products, using crude phenol after dehydration and deslagging as raw material, adopting intermittent vacuum rectification method, and passing through a rectification tower (theoretical plate number of the rectification tower is 60-90 pieces) to obtain Phenol (content greater than 98.6%, crystallization point greater than 40°C), o-cresol fraction (o-cresol content greater than 50%), m-p-cresol (m-p-cresol content greater than 50%) and industrial xylenol. The o-cresol fraction (o-cresol content greater than 50%) is subjected to intermittent vacuum distillation to obtain o-cresol products (o-cresol content greater than 96%).

[0019] The number of theoretical plates of the rectification tower is 60-90; the vacuum at the top of the rectification tower is not less than 0.05Mpa; the vacuum pressure drop of the tower is 0.005-0.025Mpa; the reflux ratio is 2-10.

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Abstract

The present invention relates to coal chemical technology, and is especially process of producing phenol products. By using crude phenol after dewaterig and eliminating slag as material and through once intermittent rectifying process in a rectifying tower with theoretical plate number of 60-90, phenol, o-cresol fraction, m, p-cresol and industrial xylenol are obtained, with the o-cresol fraction is intermittently decompression rectified to obtain o-cresol product. Compared with tower type process, the present invention has low cost, small area and low power consumption.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, and relates to a production method of phenolic products. Background technique [0002] There are many kinds of phenolic products. The original phenolic products produced by Angang Chemical General Plant include industrial phenol (containing about 85% phenol), industrial cresol (m-cresol content is greater than 34%) and industrial xylenol. There is a big gap between the variety and quality of products compared with domestic advanced enterprises. For example, Baosteel can produce phenol, m-p-cresol, o-cresol and other products. Phenol has a wide range of uses, not only for the production of phenolic resin, but also for the production of bisphenol A, n-lactam, dodecylphenol and other products; m-p-cresol can be used for the production of plant protection agents and advanced insulating paint; Phenol is used in the production of hormone-type rust removers, p...

Claims

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Application Information

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IPC IPC(8): C07C37/74C07C39/06
Inventor 李健马希博赵明姚君吴磊张显强王萍杨柏森刘庆佩
Owner ANGANG STEEL CO LTD
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