solvent cracking

The authers has studied the phase characteristics and phase equilibrium of SDA ( solvent-deasphalting) of Dagang residue-I C 4 and Dagang residue mixed with some CCDO ( catalytic cracking decant oil)-I C 4 system under subcritical conditions systematically.

系统地研究了大港渣油－异丁烷体系及混有催化裂化澄清油的大港渣油－异丁烷体系在亚临界条件下，溶剂脱沥青过程的相特性及相平衡。

The solvent extraction severity for deasphalting of VR in DACC technology ( a combination process of VR solvent deasphalting, ammonia from asphalt and DAO catalytic cracking) was studied.

前言：研究了“溶剂脱沥青-沥青制氨-催化裂化组合工艺”脱沥青的抽提深度。

This paper introduced a method of recovery of styrene from waste polystyrene foam plastics by using an organic solvent as defoamer and adopting thermal cracking process. The yield of styrene is over 80%.

本文采用有机溶剂甲苯作为消泡剂，用热裂解法从废旧聚苯乙烯泡沫塑料中回收苯乙烯，苯乙烯收率可达80%以上。

Catalyst acidity and hydrogen donating abilities of hydrocarbon solvent had marked effect on quinoline cracking.

催化剂的酸性、烃类溶剂的供氢能力对喹啉裂化有显著影响.