METHOD OF PRODUCING SYNTHETIC GAS WITH PARTIAL OXIDATION AND STEAM REFORMING

摘要

Method of producing liquid hydrocarbons from a heavy charge such as biomass, coal, lignite, or heavy petroleum residue comprising: - partial oxidation b) of the heavy charge, producing a synthetic gas SG1, with H2/CO ratio of < 1; - steam reforming c) a light charge comprising hydrocarbons having at most four carbon atoms, to produce a synthetic gas SG2 with H2/CO ratio > 3; - a Fischer-Tropsch conversion of a synthetic gas SG into liquid hydrocarbons, mixture of at least one part of SG1 and at least one part of SG2, in proportions such that SG has a H2/CO ratio of between 1.2 and 2.5. The light charge comprises hydrocarbons having less than 10 carbon atoms C1-C10 coming from a pretreatment of the heavy charge and/or products in the Fischer-Tropsch step and/or during upstream hydrocracking.