Device and method for extracting pyrene

Abstract

The invention relates to the field of organic compound extraction, in particular to a device and method for extracting pyrene. The invention is characterized in that anthracene oil is used as a raw material, and a high-purity pyrene product with purity more than 98% is obtained by using the boiling point difference among anthracene type compounds through the vacuum batch distillation and solvent washing processes. Compared with the prior art, the invention has the advantages that the process for extracting pyrene from anthracene oil is simple and easy to operate, and the price of equipment is low; the purity of extracted pyrene is high and reaches more than n98%, and the process has good stability; multi-component products can be simultaneously extracted; Profius-DP and Modbus field buses are simultaneously adopted in a flow measurement and control system, and network intelligent control is realized; and the device has GPRS (General Packet Radio Service) wireless and remote monitoring capability.

Description

technical field [0001] The invention relates to the field of extraction of organic compounds, in particular to a pyrene extraction device and method. Background technique [0002] Pyrene, Chinese name: pyrene, organic compound, molecular formula: C16H10, molecular weight: 202.24, yellow-green crystal, melting point: 156°C boiling point: 404°C, density: 1.271 (23°C). Pyrene is aromatic, flammable, insoluble in water, and easily soluble in ethanol and ether. Electrophilic substitution can be carried out, such as halogenation, nitration, sulfonation and other reactions. Pyrene is mainly found in the distillate of coal tar pitch. Pyrene is a raw material for organic synthesis. It can be oxidized to produce 1,4,5,8-naphthalene tetracarboxylic acid, which is used in dyes, synthetic resins, disperse dyes and engineering plastics; kind of dye. It can also be used to make pesticides, plasticizers, etc. [0003] Pyrene is mainly found in the distillate of coal tar pitch. Distill...

AI Technical Summary

Problems solved by technology

Distill the medium-temperature asphalt under reduced pressure, and at the same time pass a small amount of direct superheated steam into the still, cut the narrow fraction of pyrene, and then recrystallize it with a mixed solution of solvent oil and ethanol, or a mixed solution of benzene and solvent oil, and obtain a purity of 95%. Industrial pyrene, the conventional distillation process has the problems of unstable production performance, low extraction rate, large heat and energy consumption, and high production cost

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