Production process of phenol products

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...

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...