| 摘要 |
A method for purifying a hydrocarbon fluid comprising residual hydrocarbons or a blend of residual hydrocarbons with distilled hydrocarbons, to be used as fuel for a diesel engine or a gas turbine, the hydrocarbon fluid containing contaminants colloidally dispersed as stable micelles, the method comprising the following steps, in sequence: (a) disrupting colloidal structure of the micelles by heating the hydrocarbon fluid under pressure to a temperature of at least 110 DEG C. and, in a continuous operation, injecting the heated, pressurized hydrocarbon fluid into a flash chamber with cooled walls maintained at a pressure below the pressure of the hydrocarbon fluid and collecting an oily phase product at the bottom of the flash chamber, the pressure differential between the pressurized hydrocarbon fluid and the flash chamber being at least five bar, (b) recovering co-distilled volatile product fractions by condensation on the cooled flash chamber walls, and (c) separating solids from the collected oily phase product by centrifuging in the clarifying mode or filtration through at least one pore filter.
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