C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 31/08 (2006.01) C10G 21/00 (2006.01) C10G 67/04 (2006.01)
Patent
CA 2369090
In this invention a heavy crude is heated to from about 300 °F to about 600 °F. The crude is maintained at this temper-ature and gases are flashed off the crude. Salts such as magnesium chloride and calcium chloride react with water in the crude to form metal hydroxides and hydrochloric acid. Water, or preferably steam, may be advantageously admixed with the crude. Asphaltenes and other solids are subsequently separated from the heavy crude. The asphaltenes are gasified. Medium or high pressure steam is advantageously obtained from the gasification process. The steam is advantageously admixed with the heated crude to provide additional water and heat, as well as to carry away the hydrochloric acid. The hydrochloric acid is separated from the crude in a flash drum. The vapors are neutralized.
Le processus de l'invention comprend les ~tapes suivantes consistant: ~ chauffer le brut lourd pour le porter d'environ 300 ~ environ 600 ~F, ~ maintenir le brut lourd ~ cette temp~rature, de fa×on que les gaz soient vaporis~s hors du brut et que des sels, tels que le chlorure de magn~sium et le chlorure de calcium, r~agissent avec l'eau dans le brut pour former des hydroxydes m~talliques et de l'acide chlorhydrique, puis ~ m~langer avantageusement de l'eau, ou de pr~f~rence de la vapeur, au brut, ~ proc~der ensuite ~ une s~paration ult~rieure d'asphaltnes et d'autres solides, ~ partir du brut lourd, ~ gaz~ifier les asphaltnes, de fa×on ~ obtenir une pression moyenne ou ~lev~e ~ partir de ce processus de gaz~ification, et ~ m~langer pr~f~rablement la vapeur au brut chauff~, afin d'obtenir de l'eau et de la chaleur additionnelles, ainsi que pour ~liminer l'acide chlorhydrique, lequel est s~par~ ~ partir du brut dans un ballon de d~tente, et enfin ~ neutraliser les vapeurs.
Johnson Kay A.
Kasbaum Janice L.
Niccum Jacquelyn G.
Wallace Paul S.
Smart & Biggar
Texaco Development Corporation
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