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Washing oil continuous processing method

A processing method and oil washing technology, which can be used in tar processing by distillation, organic chemistry, distillation purification/separation, etc., can solve the problems of high energy consumption, long reaction time, low yield, etc. The effect of stable quality and low energy consumption

Active Publication Date: 2011-03-02
孝义市金精化工有限公司
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  • Abstract
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Problems solved by technology

The disadvantages of this production method are: long reaction time, high energy consumption; low output, about 1-2 tons per day, long production period; unstable product quality, low yield, the output of fluorene and acenaphthene are 50-60 %about

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] A kind of continuous washing oil processing method described in the present invention, reaction is carried out sequentially in 4 groups of rectification towers (A, B, C, D), and raw material washing oil enters rectification tower A through the pump, and naphthalene oil is extracted at the top of the tower, Methylnaphthalene is extracted from the side line, and the residual oil at the bottom of the tower enters the rectification tower B through a pump; the middle-quality wash oil is extracted at the top of the rectification tower B, and the acenaphthene fraction is extracted from the side line, and industrial acenaphthene is separated after crystallization, and the residual oil at the bottom of the tower enters through a pump Rectification tower C; the acenaphthene fraction is collected again at the top of rectification tower C, and the fluorene fraction is collec...

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Abstract

The invention discloses a continuous washing oil processing method. Reaction is taken place in four rectifying towers (A, B, C and D) sequentially, raw material washing oil is pumped into a rectifying tower A, naphthalene oil is extracted at the top of tower, methylnaphthalene is extracted at the lateral line, residual oil at the bottom of tower is pumped into a rectifying tower B; middle grade washing oil is extracted at the top of the rectifying tower B, acenaphthene fraction is extracted at the lateral line, crystallization and separation are carried out, thus obtaining industrial acenaphthene, and residual oil at the bottom of tower enters into a rectifying tower C; acenaphthene fraction is extracted at the top of the rectifying tower C again, dibenzofuran fraction is extracted at thelateral line, and residual oil at the bottom of tower is pumped into a rectifying tower D; dibenzofuran fraction is extracted at the top of the rectifying tower D, acenaphthene fraction is extracted at the lateral line, and the acenaphthene fraction is subject to solvent treatment, thus obtaining industrial acenaphthene. The invention has the characteristics of high production capacity, stable product quality and low energy consumption.

Description

technical field [0001] The invention belongs to the field of coal tar washing oil processing, and specifically relates to a rectification processing method for producing naphthalene oil, medium washing oil, methylnaphthalene, industrial acenaphthene, and industrial fluorene from coal tar washing oil. Background technique [0002] The coal tar batch washing oil production process currently adopted is to use coal tar washing oil as raw material, and gradually produce naphthalene oil, medium washing oil, methylnaphthalene, industrial acenaphthene, and industrial fluorene in batch stills, with 20M 3 Take the still still as an example, the raw materials added each time need to be reacted for about 20 days, and then the collected residual oil is added to the still still for rectification, and the fluorene and acenaphthene products can be obtained after repeated several times. The disadvantages of this production method are: long reaction time, high energy consumption; low output, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/04C10C1/08C10C1/12C07C7/04C07C13/567C07C13/547C07C15/24
Inventor 郝继元
Owner 孝义市金精化工有限公司
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