Patent ID: 9528049
Filing Date: 2016-12-27
CPC Classification: C01B,C10G,C10J

Claim Text:
1. A process for preparing a paraffin product from a carbonaceous feedstock comprising the following steps: (a) partial oxidation of the carbonaceous feedstock to obtain a mixture comprising hydrogen and carbon monoxide, (b) performing a Fischer-Tropsch reaction using the mixture as obtained in step (a) and recovering an off-gas from the Fischer-Tropsch reaction and a paraffin product, (c) subjecting, in a reactor, at least a part of the off-gas from the Fischer-Tropsch reaction, after removing hydrocarbons, to conversion using a catalyst comprising iron, or a catalyst comprising iron and chromium, (d) subjecting at least a part of the gas resulting from step (c) to hydrogenation in at least one separate reactor using a steam/off-gas mol ratio in the range of between 0.5 and 1.5, and a catalyst comprising copper and zinc or a catalyst comprising copper, zinc and manganese, (e) subjecting at least a part of the gas resulting from step (d) to conversion in a separate reactor, using a nickel based catalyst which comprises at most 0.2 wt % cobalt, at most 0.2 wt % iron and at most 0.2 wt % ruthenium, calculated on the total weight of the catalyst, and (f) preparing a hydrogen comprising gas from at least a part of the gas resulting from step (d), or if performed from step (e), using a reforming process.