Abstract : the authers has studied the phase cha racteristics and phase equilibri um of sda ( solvent - deasphalting ) of dagang residue - ic4 and dagang residue m ixed w ith some ccdo ( catalytic cracking decant oil ) - ic4 system under subcritical condit ions systematically 文摘: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。
