关键词: 炼化一体化, 重油加工, 沸腾床加氢, 浆态床加氢, 低硫船用燃料油

Abstract:

Based on the production needs of low-sulfur heavy marine fuel and the background of the transformation and upgrading of the refinery to maximize the raw materials production for reforming and ethylene cracking, this paper analyzes the economics of two heavy oil processing schemes of ebullating bed and slurry bed, which are typically used in the production of low-sulfur ship fuel in refining and chemical integrated enterprises, in terms of product distribution, product properties and subsequent processing routes. The results show that, compared with the slurry bed hydrogenation scheme, the fluidized bed scheme gives lower residue hydrogenation conversion rate, dry gas yield, and nitrogen content in various distillates. In addition, the ebullating bed residue hydrogenation scheme can directly produce low-sulfur ship fuel without waste residue, consume less hydrogen, and produce more jet fuel, naphtha and aromatics. When the crude oil price was 50 USD, the ebullating bed scheme has a gross profit after excise tax deduction of 1.613×10⁹ CNY more than the slurry bed program. It can be seen that for the refining and chemical enterprises with low-sulfur ship fuel production needs, the ebullating bed heavy oil processing route is more economically competitive.

Key words: refining-chemical integration, residue processing, ebullating bed hydrogenation, slurry bed hydrogenation, low sulphur marine fuel