Solvent deasphalting of Saudi residue to produce 30^# hard asphalt

ABSTRACT

30^# asphalts produced directly by de-oiled asphalt (DOA) showed poor ductility at low temperature and deasphalted oil (DAO) yield was below 17.6%. Combination technology of solvent deasphalting and blending was investigated to produce 30^# asphalt and results demonstrated that the 30^# blended asphalt with Saudi residue and DOA prepared under conditions of temperature of 105°C, pressure of 4.0 MPa, and solvent/VR ratio of 5 conformed to GB/T 15180–2010 and its asphalt mixture had excellent rutting resistance and water stability performance; meanwhile, DAO yield reached 42.7% and good quality DAO satisfied the feedstock requirement for catalytic cracking process.

KEYWORDS:

• 30^# hard asphalt
• asphalt mixture
• blending technology
• Saudi residue
• solvent deasphalting