Integrated process for hydrocarbon synthesis

Details Integrated process for hydrocarbon synthesis Integrated process for hydrocarbon synthesis

2005-02-08

2005-02-08

Parsa, J. (Department: 1621)

Chemistry: fischer-tropsch processes; or purification or recover

Treatment of feed or recycle stream

C518S700000, C518S702000, C518S703000, C518S704000

Reexamination Certificate

active

06852762

ABSTRACT:
The invention relates to a process for producing liquid hydrocarbons from a hydrocarbonaceous feedstock involving:(i) catalylically reforming at least part of the hydrocarbonaceous feedstock at elevated temperature and pressure with steam in at least one reforming zone;(ii) heating the reforming zone(s) by means of a carbon dioxide containing heating gas containing a product obtained by partial oxidation of the reformer product obtained in step (i) and carbon dioxide depleted light product obtained in step (vi) with an oxygen-containing gas in an oxidation zone;(iii) separating carbon dioxide from cooled down heating gas obtained in step (ii); (iv) catalytically converting at least part of the carbon dioxide depleted gas steam obtained in step (iii) at elevated temperature and pressure into normally liquid hydrocarbons;(v) separating product stream obtained in step (iv) into a light product having mainly unconverted synthesis gas, inerts and light hydrocarbons and a heavy product; having mainly normally liquid and solid hydrocarbons;(vi) separating carbon dioxide from the light product obtained in step (v); and(vii) combining at least part of the carbon dioxide feed obtained in step (iii) and/or step (vi) with the hydrocarbonaceous feedstock for step (i).

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