Dibenzofuran is an important organic chemical raw material, mainly used in pharmaceuticals, fuel production and various additives. The market development value is considerable. Dibenzofuran is extracted from the fraction washing oil of coal tar, and by extracting fluorene and dibenzofuran, the benzene washing performance of the washing oil can be improved, and the other components are also separated from the washing oil.

Fluorene and dibenzofuran are important chemical materials, which are mainly used for preparation of medicines, synthesizing dyes and accessory ingredients etc. It is really worthwhile expanding the market.

There are two ways to produce fluorene and dibenzofuran in general, synthesis and separation. The cost of synthesizing way is high, while the

separating way from material containing fluorene and dibenzofuran is

economical. There are abundant fluorene and dibenzofuran consist in gas absorber oil from coal tar fractions. The abstraction of fluorene and

dibenzofuran from gas absorber oil not only gets fluorene and dibenzofuran as great value products, but also improves the capability of the oil for absorbing benzene and helps to separate other components consisting in the oil.

It is used as a raw material for medicines, disinfectants, preservatives, dyes, synthetic resins and high temperature lubricants. Also used for the production of drugs to treat liver fluke of cattle and sheep, disinfectants, preservatives, dyes, synthetic resins and high temperature lubricants etc.