关键词: 减压渣油, 分输分炼, 重油加工, 渣油加氢, 低硫船用燃料油, 催化裂解原料

Abstract: Two series processes of atmospheric and vacuum distillation and residue hydrogenation are used to separate, transport, refine and process the residue of different base groups, so as to improve the rate of blended residue and decarbonization of high sulfur intermediate residue, improve the FCC feed. At the same time, reduce the reaction severity of low sulfur paraffin based vacuum residue to reduce hydrogen consumption and realize long term operation. The practice shows that through refining independently, the slag blending rate of high sulfur intermediate vacuum residue is increased from 65% to 72%, the carbon removal rate is increased by 14 percentage points, and the properties of catalytic raw materials are greatly improved. Hydrogenated residual oil with low sulfur and high residual carbon can be used to produce low sulfur ship fuel, improves economic benefits of refinery. The calculation shows that the processing benefit of separate transportation and separate refining is 10.5 yuan/ton higher than that of mixing, and high quality feedstocks with hydrogen content greater than 13% can be provided for deep catalytic cracking.

Key words: vacuum residue, separate transportation and separate refining, heavy oil processing, residue hydrogenation, low sulfur marine fuel oil, catalytic cracking feedstock