Title: Technology for extracting naphthalene fraction, methyl naphthalene fraction and industrial acenaphthene from coal-tar washing oil
Application Number: 92111855 Application Date: 1992.10.31
Publication Number: 1078991 Publication Date: 1993.12.01
Approval Pub. Date: Granted Pub. Date: 1995.02.01
International Classifi-cation: C10C1/12
Applicant(s) Name: Anshan Iron Address: 114021
Inventor(s) Name:
Attorney & Agent: CUI YING
Abstract:
     The present invention relates to a processing method for extracting naphthalene fraction, methyl naphthalene fraction and industrial acenaphthene from coal tar. The raw material washing oil is fed into the front tower to make distillation, and the naphthalene fraction whose naphthalene content is more than 60% can be produced from the tower top, and the methyl naphthalene fraction whose naphthalene content is less than 10% and methyl naphthalene content is more than 70% can be produced from the side-draw. The waste oil in the tower bottoms of the front tower is fed into the rear tower, and after distillation the middle washing oil which can be used as the benzene absorbent can be produced from the rear tower top, and the acenaphthene fraction of the side-draw is crystallized and filtered, the industrial acenaphthene whose acenaphthene content is more than 95% can be obtained.
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