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Method for resource utilization of phenolic tar

A technology for phenol tar and resource utilization, which is applied in the field of phenol tar resource utilization, can solve the problems of carcinogenicity, adverse effects on production safety and product quality, phenol toxicity, etc. Effect

Pending Publication Date: 2021-03-12
ANHUI XIN SOLID ENVIRONMENTAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phenol tar is a hazardous waste (phenol is toxic and carcinogenic), and it can be directly refined into coking raw material oil, which will adversely affect production safety and product quality

Method used

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  • Method for resource utilization of phenolic tar
  • Method for resource utilization of phenolic tar
  • Method for resource utilization of phenolic tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for resource utilization of phenol tar, raw materials are calculated in parts by mass, comprising the steps of:

[0030] (1) The first step of sulfonation: heat 50 parts of phenol tar to 100-110°C, slowly add 50 parts of concentrated sulfuric acid with a mass fraction of 98% dropwise, continue to keep warm for 1 hour after the addition is completed, and then use 32% sulfuric acid Liquid sodium hydroxide is neutralized to pH 7±0.5 to obtain the first step sulfonated compound.

[0031] (2) Second-step sulfonation: Add 133 parts of sodium sulfite with a purity of 90% and 210 parts of water to the first-step sulfonated product, heat, continue sulfonation and heat preservation reaction at 90-95°C for 1 hour, and obtain the second-step sulfonated product .

[0032] (3) Subsequent reaction: Add 210 parts of water to the second-step sulfonated compound, lower the temperature to below 50°C, start to slowly add 90 parts of acetone dropwise, and keep warm for 30 minutes ...

Embodiment 2

[0034] A method for resource utilization of phenol tar, raw materials are calculated in parts by mass, comprising the steps of:

[0035] (1) The first step of sulfonation: heat 50 parts of phenol tar to 100-110°C, slowly add 50 parts of concentrated sulfuric acid with a mass fraction of 98%, keep the temperature for 1 hour after the addition, and then use a liquid with a mass fraction of 32% Sodium hydroxide is neutralized to pH 7±0.5 to obtain the first step sulfonate.

[0036] (2) Second-step sulfonation: cool the first-step sulfonated compound to 60°C, add 133 parts of sodium sulfite with a purity of 90%, and 210 parts of water, heat, and continue the sulfonation reaction at 90-95°C for 1 hour to obtain the second step Two-step sulfonate.

[0037](3) Subsequent reaction: Add 210 parts of water to the sulfonated compound in the second step, lower the temperature to below 50°C, start to slowly add 90 parts of acetone dropwise, and keep the temperature for 30 minutes after th...

Embodiment 3

[0039] A method for resource utilization of phenol tar, raw materials are calculated in parts by mass, comprising the steps of:

[0040] (1) The first step of sulfonation: heat 50 parts of phenol tar to 100-110 ° C and slowly add 50 parts of oleum (105%) dropwise, keep warm for 1 hour after the addition, and then oxidize with liquid hydroxide with a mass fraction of 32% Sodium is neutralized to pH 7±0.5 to obtain the first step sulfonate.

[0041] (2) Second-step sulfonation: cool the first-step sulfonated compound to 60°C, add 133 parts of sodium sulfite with a purity of 90%, and 210 parts of water, heat, and continue the sulfonation reaction at 85-90°C for 1.5 hours to obtain The second step sulfonate.

[0042] (3) Subsequent reaction: Add 210 parts of water to the sulfonated compound in the second step, lower the temperature to below 50°C, start to slowly add 90 parts of acetone dropwise, and keep the temperature for 30 minutes after the dropwise addition. After the heat ...

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Abstract

The invention provides a method for resource utilization of phenolic tar. The resource utilization method comprises the following steps: (1) first sulfonation: heating phenolic tar to 100-110 DEG C, slowly adding a sulfonating agent I, continuously keeping the temperature for 1-2.5 hours after the sulfonating agent I is added, and conducting neutralizing with alkali; (2) secondary sulfonation: cooling the sulfonation product in the first step to 50-60 DEG C, adding a sulfonating agent II and water, conducting heating, and continuing sulfonation heat preservation reaction at 85-95 DEG C for 0.5-2.5 h; and (3) subsequent reaction: adding water into the sulfonation product obtained in the step (2), conducting cooling to 50 DEG C or less, slowly dropwise adding acetone, keeping the temperaturefor 10-60 minutes after dropwise adding, dropwise adding a formaldehyde solution, then conducting heating to 90-95 DEG C, preserving heat for 1-2.5 hours, and conducting cooling, replenishing water or not replenishing water after heat preservation is finished. The reaction conditions are normal-temperature and normal-pressure reaction, the production process is simple, no three wastes are discharged, the problem that the phenolic tar is difficult to treat is solved, the recycling of resources is realized, and the prepared product has better dispersity for coal water slurry or cement concreteand has good economic benefits.

Description

technical field [0001] The invention relates to the technical field of phenol tar, in particular to a method for resource utilization of phenol tar. Background technique [0002] Coal water slurry is used to replace coal combustion, which has the advantages of high combustion efficiency, reduced environmental pollution, convenient load adjustment, saving coal and improving working conditions. Coal water slurry technology is a clean coal technology that is efficient, safe, economical and clean, and easy to operate. As a new type of oil substitute fuel, coal water slurry has been highly valued by many countries. Coal water slurry is a solid and liquid two-phase coarse dispersion system. In order to make the coal water slurry have a lower viscosity and better fluidity in normal use, and a higher viscosity when it is still, it is not easy to form precipitation. It is essential to add a small amount of chemical additives in the pulping process. There are many factors affecting...

Claims

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Application Information

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IPC IPC(8): C08G6/02C08G16/04C04B24/22C04B103/40
CPCC08G6/02C08G16/04C04B24/226C04B24/22C04B2103/408
Inventor 董翠平马丽涛尤健健彭城杨道顺刘子恒乔琼琼
Owner ANHUI XIN SOLID ENVIRONMENTAL CO LTD
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