Integrated Biorefinery Scheme Design for the Co-production of Premium Quality Liquid Fuels and Propylene

摘要

Decarbonizing the transportation sector is critical to achieving global climate change mitigation. A multi-product biorefinery process for co-producing premium quality liquid fuels and propylene is investigated. A thermochemical based process structure, which considers various alternatives for gasifier, tar treatment, Fischer-Tropsch (F-T) upgrading, and wax treatment, and the corresponding mixed integer nonlinear programming (MINLP) model are introduced. Heat and power integration are simultaneously considered to reduce the overall capital/operating cost. Through solving the MINLP model, the influences of product combinations and plant capacity on process topology, and break even oil price (BEOP) are analyzed. The results demonstrate that the introduction of fluidized catalytic cracking to F-T product upgrading for co-producing liquid fuels and propylene is profitable.