Process for removing paraffins from their mixtures with paraffin

Details Process for removing paraffins from their mixtures with paraffin Process for removing paraffins from their mixtures with paraffin

1987-07-10

1988-10-18

Pal, Asok

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By plural serial diverse separations

208263, 260513R, 585811, C07C 700, C10G 3100

Patent

active

047789450

ABSTRACT:
Mixtures of C.sub.12 -C.sub.18 n-paraffins with paraffinsulphonic acids having the same number of carbon atoms, water and sulphuric acid, and obtained by sulphoxidation of said paraffins with SO.sub.2 and O.sub.2 in the presence of water and UV radiation are stripped of their excess SO.sub.2 and decanted to separate most of the paraffins, and obtain a residual mixture. The residual mixture is dehydrated according to the invention until a two-phase system forms or at least until the mixture becomes turbid, and the dehydrated mixture either as such or after separating the heavier phase consisting of water and sulphuric acid is extracted with supercritical CO.sub.2, which removes with it the n-paraffins, these being reused in the sulphoxidation process.

REFERENCES:
patent: 3988218 (1976-10-01), Suzuki et al.
patent: 4568447 (1986-02-01), Pujado et al.

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