Separation of hydrogen fluoride from 1,1-difluoroethene

Details Separation of hydrogen fluoride from 1,1-difluoroethene Separation of hydrogen fluoride from 1,1-difluoroethene

1987-12-21

1989-04-04

Stoll, Robert L.

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

570155, 570156, 570157, 570158, 570136, C01B 719, C07C 1734, C07C 1908, C07C 2118

Patent

active

048185132

ABSTRACT:
A gaseous feed stream comprising hydrogen fluoride and 1,1-difluoroethane is contacted with liquid organic barrier material in a condensing zone to partially condense the feed stream. The gaseous phase remaining after the partial condensation comprises most of the 1,1-difluoroethane originally present in the feed stream while the liquid condensate comprises most of the hydrogen fluoride originally present in the feed stream. The gaseous phase and the liquid condensate are removed from the condensing zone as separate streams. Less than about 50 percent of the 1,1-difluoroethane originally present in the feed stream reacts with hydrogen fluoride to form 1,1,1-trifluoroethane during the partial condensation and the removal of the separate streams from the condensing zone. The preferred liquid organic barrier material is 1,1,-trifluoroethane.

REFERENCES:
patent: 2468681 (1949-04-01), McBride
patent: 2478933 (1949-08-01), Bratton et al.
patent: 2480560 (1949-08-01), Downing et al.
patent: 2551573 (1951-05-01), Downing et al.
patent: 2558011 (1951-06-01), Sprauser
patent: 2627529 (1953-02-01), Feasley et al.
patent: 2628989 (1953-02-01), Miller
patent: 2637747 (1953-05-01), McBee
patent: 2674632 (1954-04-01), Skiles
patent: 2687440 (1954-08-01), McGrew et al.
patent: 2722558 (1955-11-01), Johnston
patent: 2733278 (1956-01-01), Anderson
patent: 2734090 (1956-02-01), Calfee et al.
patent: 2744148 (1956-05-01), Ruh et al.
patent: 2754336 (1956-07-01), Chernosky
patent: 2774798 (1956-12-01), Davis et al.
patent: 2774799 (1956-12-01), Mantell et al.
patent: 2889378 (1959-06-01), Boettger et al.
patent: 2909571 (1959-10-01), Landrum et al.
patent: 2917556 (1959-12-01), Percival
patent: 3047637 (1962-07-01), Olstowski
patent: 3073870 (1963-01-01), Marquis
patent: 3089910 (1963-05-01), Olstowski et al.
patent: 3118005 (1964-01-01), Pavlath et al.
patent: 3188356 (1965-06-01), Hauptschein et al.
patent: 3246041 (1966-04-01), Miville et al.
patent: 3258500 (1966-06-01), Swamer et al.
patent: 3428695 (1969-02-01), Soulen et al.
patent: 3432562 (1969-03-01), Gardner
patent: 3442961 (1969-05-01), Hutton
patent: 3444251 (1969-05-01), Gardner
patent: 3456025 (1969-07-01), Gardner
patent: 3557228 (1971-01-01), Moyer et al.
patent: 3600450 (1971-08-01), Kaess et al.
patent: 3636172 (1972-01-01), Gardner
patent: 3723549 (1973-03-01), Kaess et al.
patent: 3755477 (1973-08-01), Firth et al.
patent: 3830856 (1974-08-01), Muessdoerffer
patent: 3833675 (1974-09-01), Ukaji et al.
patent: 3862995 (1975-01-01), Martens et al.
patent: 3996299 (1976-12-01), Fozzard
patent: 3996301 (1976-12-01), Fozzard
patent: 4053529 (1977-10-01), Martens
patent: 4086407 (1978-04-01), Fozzard
patent: 4087475 (1978-05-01), Jordan
patent: 4147733 (1979-04-01), Fiske et al.
patent: 4148831 (1979-04-01), Schultz et al.
patent: 4178316 (1979-12-01), Schultz et al.
patent: 4613709 (1986-09-01), Franklin
J. F. Froning et al., Industrial and Engineering Chemistry, Mar., 1947, pp. 275-278.
J. H. Simons, Fluorine Chemistry, vol. I, Academic Press Inc., New York, 1950, pp. 236-239 and 310-311.
Chemical Abstracts, vol. 62, 444e, 1965, Abstracting Fr 1,369,786.
Derwent Abstract of JP 54[1979]-130507 (1979).
F. H. Walker et al., Journal of Organic Chemistry, vol. 30 (Oct. 1965), pp. 3284-3285.

Affiliated with

Also associated with

Rating

Separation of hydrogen fluoride from 1,1-difluoroethene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation of hydrogen fluoride from 1,1-difluoroethene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of hydrogen fluoride from 1,1-difluoroethene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-178912