▎ 摘　　要

NOVELTY - Preparing fuel liquid comprises taking synthesis gas and 4C component as reaction raw material gas, carrying out conversion reaction on the fixed bed or moving bed, and reacting the reaction raw material gas by the composite catalyst bed layer. USE - The method is useful for preparing liquid fuel by one-step method of synthesis gas and C4 component co-feed. ADVANTAGE - The method: has high product yield and selectivity; the selectivity of the liquid fuel composed of C5-11C can reach to 60-80%; the content of aromatic hydrocarbon is reduced by 20%; and the by-product methane selectivity is less than 10%; compared with the single synthesis gas conversion or C4 olefin conversion process, one-way space-time yield of gasoline component can be improved by about 40-100%.