Complete equipment for extracting phenols in medium and low temperature coal tar

Abstract

The invention discloses a piece of complete equipment for extracting phenols in medium and low temperature coal tar, which belongs to the complete equipment for extracting the low temperature coal tar. The complete equipment for extracting the phenols in the medium and low temperature coal tar comprises five kettles, four tanks and three groups of condensers, which are respectively a medium and low temperature coal tar extracting and separating kettle, an extraction light oil No. 1 extractant concentration kettle, a No. 1 solvent tank, an extraction crude phenol No. 2 extraction agent concentration kettle, a No. 2 solvent tank, a No. 3 solvent refined crude phenol extraction kettle; an extraction refined crude phenol filter tank, an extraction refined crude phenol No. 3 extractant concentration kettle, a No. 3 solvent tank, a No. 1 condenser, a No. 2 condenser and a No. 3 condenser. The complete equipment disclosed by the invention can quickly, simply and selectively realize the refined separation of the low-carbon hydrocarbons and mixed phenols from the medium and low temperature coal tar in high purity, has an obvious condensing effect of the multi-level condensers, has little environmental pollution, can be easy to recycle and circularly use, and can easily realize the high-quality and high added value use, such as large-scale production, the separation and conversion of the low temperature coal tar and so on.

Description

technical field [0001] The invention relates to a complete set of equipment for extracting low-temperature coal tar, in particular to a complete set of equipment for separating and extracting phenols in medium-low temperature coal tar by an extraction method. Background technique [0002] Medium and low temperature coal tar is a by-product of semi-coal and gas production. The content of non-hydrocarbon organic compounds in medium and low temperature coal tar is very high, especially the phenolic compounds in the acidic component, which can be as high as 10% to 30% of the total liquid. The phenolic compounds with medium and low boiling points mainly include C3 -C4 alkylphenols, naphthols and alkylnaphthols, etc. [0003] Medium and low temperature coal tar is a chemical raw material with high added value, which can be used to produce organic chemicals such as liquid fuels, phenols, alkanes and aromatics, and many important chemical intermediates can also be separated from it...

AI Technical Summary

Problems solved by technology

[0005]Because the composition of medium and low temperature coal tar is very different from that of high temperature coal tar, the existing high temperature coal tar processing methods, processes and equipment cannot be used to process low temperature coal tar

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