Device and process for extracting phenanthrene, fluoranthene and pyrene products in anthracene oil

Abstract

The invention belongs to the technical field of advanced treatment of anthracene oil and in particular relates to a device and process for extracting phenanthrene, fluoranthene and pyrene products in anthracene oil. The extracting device comprises an anthracene phenanthrene fraction extraction system and a carbazole fraction extraction system. The extracting device is characterized in that a fluoranthene / pyrene fraction extraction system, a solvent regeneration system, a phenanthrene fraction extraction system and a tail gas purification system are further arranged behind the carbazole fraction extraction system. The extraction device is added with a phenanthrene tower and a fluoranthene / pyrene tower on the previous distillation basis of refined anthracene and carbazole; the setting conditions of the two towers, and the material and filler of the towers are more convenient for extracting the phenanthrene, fluoranthene and pyrene products. The process flow is of four-furnace and four-tower continuous rectification, and capable of producing the anthracene phenanthrene fraction, the carbazole fraction, the fluoranthene fraction, the pyrene fraction and the phenanthrene fraction simultaneously; the process is convenient and flexible to operate, and capable of extracting the phenanthrene, fluoranthene and pyrene having the content of almost 40% in the anthracene oil without increasing more investment; the yield of the products can be more than 80%, and considerable economic benefits can be gained.

Description

technical field

[0001] The invention belongs to the technical field of deep processing of anthracene oil, and in particular relates to a device and a process for extracting phenanthrene, fluoranthene and pyrene products in anthracene oil. Background technique

[0002] Coal tar, a by-product of the coking process, is a complex mixture composed almost entirely of aromatic compounds. Anthracene oil is separated during deep processing of coal tar, in which anthracene, phenanthrene, carbazole, fluoranthene, and pyrene are all enriched in anthracene oil. Phenanthrene is an aromatic hydrocarbon with three benzene ring structures, an isomer of anthracene. It is a colorless flaky crystal with blue fluorescence, capable of sublimation, and insoluble in water. The phenanthrene solution has blue fluorescence, and can be used to produce dyes, drugs, and resins after phenanthrene conversion and processing; the perhydrophenanthrene obtained by hydrogenation can be used to produce jet fue...

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