A method of solvent extraction to separate heavy aromatics was adopted from furfural extraction oil, which is used to produce rubber softener. This provides a good technique for taking good advantage of the extraction oil. The results show that with the furfural as the extract reagent, under the condition of the extract temperature is 60 ℃， the mass ratio of solvent to oil is 2.0， extract time 3 min，the sedimentation time is 30 min. After furfural extraction, the rubber softener satisfies the standard of rubber softener. A good macromolecule aromatics rubber softener would be obtained, and the remained oil can be used as the raw material of FCC. So this technology has good application potentials.

The paper presents the demetallization from Liaohe coker gasoline under the ultrasound radiation. The effect of ultrasound-assisted, demetallization agent and its amount, reaction time in demetallization were studied, in order to obtain optimum processing parameter during demetallization. The results show that high metal removal effect will be obtained in short time under the assistance of ultrasound. The metal removal effect is the best when the demetallization agent [KG*3/5]mass[KG*3/5] fraction[KG*3/5] is 1 500 μg/g, the ultrasound radiation time is 15 min and the ultrasound intensity is 8 W/cm2. The removal rate of Zn is 90%, and the removal rates of Ca and Ni are above 80%.