Solid carbonaceous feed to liquid process

Details Solid carbonaceous feed to liquid process Solid carbonaceous feed to liquid process

2007-11-01

2010-06-22

Parsa, Jafar (Department: 1621)

Chemistry: fischer-tropsch processes; or purification or recover

Liquid phase fischer-tropsch reaction

C518S702000, C518S703000, C518S715000, C048S127500, C208S107000

Reexamination Certificate

active

07741377

ABSTRACT:
A process to prepare a paraffinic hydrocarbon from a solid carbonaceous feedstock, preferably coal by performing the following steps,(a) feeding an oxygen comprising gas and the carbonaceous feedstock to a burner positioned horizontal and firing into a reactor vessel,(b) performing a partial oxidation of the carbonaceous feedstock in said burner to obtain a stream of hot synthesis gas which flows upwardly relative to the burner and a liquid slag which flows downwardly relative to the burner,(c) cooling the hot synthesis gas by first cooling the gas to a temperature of between 500 and 900° C. by injecting a gaseous or liquid cooling medium into the synthesis gas and subsequently second cooling the gas in to below 500° C. by directly contacting with water,(d) separating solids from the cooled synthesis gas by means of a water scrubbing process step,(e) performing a water shift reaction on at least part of the scrubbed synthesis gas,(f) separating sulphur compounds, carbon dioxide and other possible impurities from the shifted gas to obtain a purified synthesis gas, and(g) performing a Fischer-Tropsch synthesis using the purified synthesis gas of step (f) to obtain a synthesis product comprising paraffinic hydrocarbons.

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