关键词: 全局资源优化系统, 炼油厂, 产品构成, 蒸汽平衡, 能耗, 投资回收期

Abstract: The whole process planning of the refinery needs to be supported by perfect global resource optimization calculation. This study uses S-GROMS (SINOPEC Global Resource Optimization Modeling System) to design a 12.0 MM TPY refinery. The whole process model of the refinery is established, the whole process optimization is realized through the relaxation branch and bound nonlinear optimization algorithm, and heavy oil processing conditions, product scheme, nonlinear blending and the optimal processing route under different price systems are optimized. The results show that when the average price of crude oils is between 40 to 60 dollar per barrel, the full hydrogenation scheme to maximize chemicals has better economic benefits, and the after-tax profit per ton of oil can reach 373 yuan; When the price is higher than 80 dollar per barrel, the margin benefit of product exceeds ethylene, the hydrogenation-FCC scheme to maximize fuel oil such as gasoline has better economic benefits, and the investment payback period is 10.6 years. The whole process modeling and optimization of large refineries is realized by nonlinear algorithm.

Key words: S-GROMS, refinery, product composition, steam balance, energy consumption, investment payback period