Distillate dephenolizing process and apparatus thereof

A dephenolization and process technology, which is applied in the field of coal tar processing technology in the metallurgical coking industry, can solve problems such as environmental pollution of dephenolization buffer tanks and liquid level regulators, and achieve the effects of easy maintenance, small device footprint and simple process flow.

Active Publication Date: 2009-07-08
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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AI Technical Summary

Problems solved by technology

[0007] At present, the dephenolization process of fractions in all coal tar processing devices at home and abroad has not solved the problem of environmental pollution caused by dephenolization buffer tanks and liquid level regulators.

Method used

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  • Distillate dephenolizing process and apparatus thereof

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Embodiment Construction

[0039] The technical process and equipment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] See figure 1 , the equipment used in the distillate dephenolization process, including alkaline phenoxide injection pump 5, dephenolization washing pump 6, primary dephenolization tower 1, mixing nozzle 2, secondary dephenolization tower 3, dephenolization tower 4, new base injection Pump 7, alkaline phenate injection pump 5, dephenol washing pump 6, primary dephenolization tower 1, mixing nozzle 2, secondary dephenolization tower 3, and dephenolization tower 4 are sequentially connected through delivery pipelines, and mixing nozzle 2 is also connected The fresh base is injected into the pump 7; the dephenol washing pump 6 is also connected to the unwashed mixture oil tank. The alkaline phenate injection pump 5 and the new base injection pump 7 are metering pumps.

[0041] A kind of distillate dephenolization process, t...

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Abstract

The invention relates to a distillate dephenolizing process for the middle production procedure of a coal tar processing device. The technical process comprises the following steps: using a dephenolizing washer pump to pump out the unwashed mixed part which comes from a tar distillation plant so as to be mixed evenly and react with basic phenate together in the dephenolizing washer pump; putting the mixed solution into a primary dephenolizing tower to be kept stand and separated into a mixed part and neutral sodium phenolate, wherein the mixed part enters a secondary dephenolizing tower through a mixing nozzle; and in order to further remove phenols in the mixed part, using 10 to 12 percent diluted alkaline to perform secondary dephenolizing on the mixed solution before the mixed part enters the secondary dephenolizing tower. The mixture is kept stand and separated into the basic phenate and a washed mixed part in the secondary dephenolizing tower, the washed mixed part flows into a phenate removing tower automatically and is kept stand and separated out the residual basic phenate in the phenate removing tower, then the basic phenate flows into a basic phenate groove, and finally the washed mixed part enters a industrial naphthalene distillation plant for further processing. The process can reduce the environmental pollution, save energy resources and improve the efficiency.

Description

technical field [0001] The invention relates to a coal tar processing technology in the metallurgical coking industry, in particular to a fraction dephenolization process and a device thereof in the intermediate production process of a coal tar processing device. Background technique [0002] The production process of distillate dephenolization in the existing coal tar processing industry at home and abroad is generally a continuous washing dephenolization process. [0003] The dephenolization of the phenol-naphthalene-washed triple-mixed fraction adopts the technological process of continuous washing and dephenolization. [0004] The unwashed mixed portion from the tar distillation unit is stored in the unwashed mixed portion tank, pumped out by a continuous washing pump, fully mixed and reacted with the basic sodium phenate from the high level tank of basic sodium phenate in the pump, and enters the The separation tower is continuously washed once, and the mixture is sepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/00
Inventor 陶凤君杨雪松孙虹姜秋郭国杰叶煌
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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