Method of removing aromatic hydrocarbons by using solvent naphtha

2011 
The invention discloses a method of removing aromatic hydrocarbons by using solvent naphtha, belonging to the technical field of solvent naphtha refining. The method comprises the following steps of: feeding a raw material formed by mixing the solvent naphtha and a dearomatization solvent into a reactor, reacting aromatic hydrocarbons in the solvent naphtha with the dearomatization solvent in an acid catalyst to generate alkyl aromatic hydrocarbons with a higher boiling point, and reacting to obtain dearomatization solvent naphtha by adopting a fractional distillation cutting method, wherein the transfer reaction temperature of alkyls is 160-220 DEG C, the reaction pressure of the alkyls is 1-5 MPA as gage pressure, the mass space velocity of the raw material is 0.5-20h-1, the molar ratioof the dearomatization solvent to the aromatic hydrocarbons in the solvent naphtha is (-10):1, the dearomatization solvent is triisopropylbenzene or diisopropylbenzene, and the catalyst is a solid acid catalyst. The method has a simple process and can be used for achieving a better dearomatization effect and producing the dearomatization solvent naphtha having stricter requirements on the contentof aromatic hydrocarbons.
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