Chemistry of hydrocarbon compounds – Saturated compound synthesis – By condensation of a paraffin molecule with an olefin-acting...
Patent
1994-08-30
1996-06-18
Pal, Asok
Chemistry of hydrocarbon compounds
Saturated compound synthesis
By condensation of a paraffin molecule with an olefin-acting...
585723, C07C 262, C07C 704
Patent
active
055279805
ABSTRACT:
An improved process for the regeneration of an ASO-containing HF catalyst by the removal of ASO from said catalyst through the utilization of a separation column equipped with fixed valve fractionation trays. The separation column defines a separation zone having a top zone, an intermediate zone, and a bottom zone wherein contained within the bottom zone is a series of vertically spaced, fixed valve fractionation trays, wherein each of the fixed valve fractionation trays includes a plate defining a plurality of apertures and wherein fixedly spaced above each of the apertures is a valve having a shape substantially the same as the apertures for directing the flow of gas passing upwardly through the apertures of the plate into the direction substantially parallel to the plate. One important aspect of the invention includes the use of the fixed valve fractionation trays in combination with the recycling of the bottoms stream in order to minimize the amount of hydrogen fluoride that passes with the ASO of the bottoms stream of the separation column. Further embodiments of the process include the formation and provision of multiple liquid phases in the bottom zone of the separation column with the liquid phases each having a different concentration of HF. The liquid phase with the lowest HF concentration is withdrawn as a product and the liquid phase with the larger HF concentration is recycled to the intermediate zone of the separation column.
REFERENCES:
patent: 2551881 (1951-05-01), Hachmuth
patent: 2914590 (1959-11-01), Van Pool
patent: 3721720 (1973-03-01), Chapman et al.
patent: 3793394 (1974-02-01), Chapman
patent: 3975164 (1976-08-01), Brown, Jr.
patent: 4199409 (1980-04-01), Skraba
patent: 4454369 (1984-06-01), Hutson, Jr. et al.
patent: 4663026 (1987-05-01), Louie et al.
Perry et al. "Chemical Engineers' Handbook". Fifth Edition, 1973 pp. 18-3 to 18-5.
Pal Asok
Phillips Petroleum Company
Stewart Charles W.
LandOfFree
Regeneration of hydrogen fluoride alkylation catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Regeneration of hydrogen fluoride alkylation catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regeneration of hydrogen fluoride alkylation catalyst will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-224318