Optimization of vacuum resid solvent deasphalting to produce bright stock and hard asphalt. (2nd January 2018)

• Record Type: Journal Article
• Authors: Tong, Yujun; Shen, Benxian; Fang, Weifeng; Liu, Jichang; Sun, Hui
• Is Part Of: Petroleum science and technology. Volume 36:Number 1(2018)
• Page Start: 55
• Page End: 61
• Publication Date: 2018-01-02
• Subjects: vacuum residue -- solvent deasphalting -- bright stock -- hard asphalt -- catalytic cracking performance; Liquid fuels -- Periodicals; Petroleum -- Periodicals; 665.505
• DOI: 10.1080/10916466.2017.1403453
• Languages: English
• ISSNs: 1091-6466

Abstract

ABSTRACT: To prepare bright stock (BS) and 30# hard asphalt simultaneously, propane solvent deasphalting (SDA) of Oman vacuum residue was optimized. Result showed the optimal process conditions were as follows: extraction tower top temperature of 64°C, settling tower top temperature of 74°C, extraction pressure of 3.35 MPa, solvent ratio of 5. Compared with SDA of Oman VR to prepare bright stock and 70# asphalt, the yields of light deasphalted oil (LDAO) and heavy deasphalted oil (HDAO) were 26.8% and 24.7%, and increased by 1.7% and 5.2% respectively; carbon residue of LDAO was less than 1.2%, conformed to the feed requirement of furfural refining to produce bright stock. The yield of DOA was 48.5%, and DOA could be directly used to produce 30# hard asphalt. The PG grade of 30# asphalt was PG 76–22 and the 30# asphalt mixture had high rut dynamic stability and water resistant stability. HDAO could be used as feedstock of catalytic cracking and light yield oil (gasoline and diesel) was 65.99%.