Recovery treatment method and device for solid waste phenol slag produced by alkylphenol production process

A technology of alkyl phenol, recycling and processing, which is applied in the chemical industry to achieve the effects of reducing costs, simplifying the treatment process and avoiding waste

Active Publication Date: 2020-02-21
JINNENG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the defects in the treatment of solid waste phenol residue in the existing alkylphenol process, the purpose of the present invention is to provide a method for recycling and processing the solid waste phenol residue produced by the alkylphenol process

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  • Recovery treatment method and device for solid waste phenol slag produced by alkylphenol production process

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Embodiment 1

[0039] This embodiment provides a method for recycling and processing the solid waste phenol residue produced by the alkylphenol production process, such as figure 1 As shown, it includes the following steps:

[0040] (1) Put the phenol slag that has been pretreated and evaporated part of the phenol into the beating tank, and at the same time add 200g of water for every 100g of phenol slag for beating until the phenol slag is completely dispersed. After cooling down to 30°C, pump it into the slurry collection jar.

[0041] (2) After the slurry collection tank reaches 4 / 5 of the liquid level, it is pumped into the filter press for pressure filtration, and the filter cake after pressure filtration is used for coal blending or as a raw material for synthetic resin, and the filtrate enters the acidifier.

[0042] (3) Adjust the pH value to 4 by controlling the addition of sulfuric acid or sulfur dioxide, and collect a small amount of crude alkylphenol produced in the acidificati...

Embodiment 2

[0047] This embodiment provides a method for recycling and processing the solid waste phenol residue produced by the alkylphenol production process, such as figure 1 As shown, it includes the following steps:

[0048] (1) Put the phenol slag that has been pretreated and evaporated part of the phenol into the beating tank, and at the same time, add 400g of water for every 100g of phenol slag for beating until the phenol slag is completely dispersed. After cooling down to 35°C, pump it into the slurry collection jar.

[0049] (2) After the slurry collection tank reaches 4 / 5 of the liquid level, it is pumped into the filter press for pressure filtration, and the filter cake after pressure filtration is used for coal blending or as a raw material for synthetic resin, and the filtrate enters the acidifier.

[0050] (3) By controlling the addition of sulfuric acid or sulfur dioxide, the pH value is adjusted to 5, and a small amount of crude alkylphenol produced in the acidificatio...

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Abstract

The invention provides a recovery treatment method and device for solid waste phenol slag produced by an alkylphenol production process. The method comprises the following steps: adding water into thephenol slag and pulping to completely disperse the phenol slag to obtain slurry; then carrying out filter pressing on the slurry to obtain filtrate and a filter cake; carrying out acidification treatment on the filtrate to obtain crude alkylphenol and acidified supernatant; and carrying out alkali treatment on the acidified supernatant and drying to obtain solid sodium alkyl benzene sulfonate. According to the recovery treatment method provided by the invention, an existing treatment technology is optimized and innovated; effective components in the phenol slag can be recovered through a simple treatment process and cheap treatment raw materials; especially, a lot of the sodium alkyl benzene sulfonate in the phenol slag can be recovered and wastes are avoided; the solid waste amount of the phenol slag can be reduced; the cost is reduced and the sodium alkyl benzene sulfonate is effectively recovered; and the recovery treatment method and device are good for environmental protection.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a method and a device for recycling solid waste phenol residue produced in an alkylphenol production process. Background technique [0002] The preparation methods of alkylphenols (especially p-cresol) in modern industry include isopropyl toluene method, natural separation method, direct oxidation of toluene, and alkali fusion method of toluene sulfonation. Wherein the commonly used mainly is alkylbenzene sulfonation alkali fusion method (such as the patent application whose publication number is CN109400446A). Alkylbenzene is sulfonated with sulfuric acid or other sulfonating agents to generate alkylbenzenesulfonic acid, and then neutralized to generate sodium alkylbenzenesulfonate, which reacts with sodium hydroxide at high temperature to generate alkane Sodium phenoxide, and then through acidification, rectification and other processes to finally generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
CPCB09B3/00
Inventor 刘良良范安林于振伟张文健张丽丽
Owner JINNENG SCI & TECH
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