Integrated process for hydrocarbon synthesis

摘要

A process for the preparation of syngas from a hydrocarbonaceous feedstock is described. It comprises the steps of: (i) splitting the hydrocarbonaceous feedstock into a first feedstock stream and a second feedstock stream; (ii) catalytically reforming the first feedstock stream in at least one reforming zone to produce a reforming product; (iii) oxidising the second feedstock stream in at least one partial oxidation zone to produce a partial oxidation product; (iv) mixing some or all of the reforming product and some or all of the partial oxidation product to produce a heating gas (syngas) in a mixing zone which is separated from the reforming zone and the partial oxidation zone; (v) heating the reforming zone(s) by means of the heating gas; and (vi) optionally separating carbon dioxide from the cooled heating gas to produce a carbon dioxide depleted syngas stream. The syngas can be used to produce hydrocarboneous products, e.g. by the Fischer Tropsch process. The invention provides an integrated process for the production of hydrocarbon products from a hydrocarboneous feedstock. Operation of the reforming step and the partial oxidation step in parallel as opposed to in series provides an effective means for balancing the energy characteristics of the two steps. The process of the invention also facilitates flexible operation in that the H2/CO ratio can be readily tuned in a number of ways.