Purification of hydrocarbonaceous fractions

Details Purification of hydrocarbonaceous fractions Purification of hydrocarbonaceous fractions

C - Chemistry, Metallurgy

07

C

260/235.95

C07C 7/10 (2006.01) C07C 7/12 (2006.01) C07C 13/615 (2006.01) C07C 13/64 (2006.01) C10G 21/00 (2006.01) C10G 25/00 (2006.01) C10L 3/00 (2006.01)

Patent

CA 2017527

PURIFICATION OF HYDROCARBONACEOUS FRACTIONS ABSTRACT There is disclosed a process for extracting diamondoid compounds from a fluid which comprises separating diamondoid compounds for a diamondoid containing fluid. The fluid typically is natural gas containing diamondoid compounds or a hydrocarbon liquid containing diamondoid compounds in solution. One separation process involves: mixing the gas stream with an aromatics distillate oil; controlling temperature and pressure to maintain part of the mixture in the liquid phase; separating the mixture into a vapor stream and a diamondoid enriched aromatics stream; contacting the vapor stream with silica gel in a first sorption zone to sorb at least partially a portion of the diamondoid compounds from the vapor stream; and recovering diamondoid compounds from the silica gel in a second sorption zone by contacting silica gel with a regeneration fluid in which diamondoid compounds are at least partially soluble. Three methods are disclosed in recovering diamondoid compounds from the diamondoid-enriched aromatics stream. One involves absorption in the pores of a zeolite porous solid. Another involves extraction of the aromatics component. The third involves separation by a thermal gradient diffusion process.

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