Distillation: processes – separatory – Adding material to distilland except water or steam per se – Organic compound
Patent
1983-02-11
1986-02-04
Bashore, S. Leon
Distillation: processes, separatory
Adding material to distilland except water or steam per se
Organic compound
203 14, 203 42, 203 71, 203 74, 549250, B01D 334
Patent
active
045684278
ABSTRACT:
A process for the continuous isolation of phthalic anhydride and maleic anhydride from the reaction gases obtained by catalytic oxidation of o-xylene or naphthalene with air, wherein the reaction gases are treated with a hydrocarbon of boiling range from 115.degree. to 175.degree. C. as the solvent in a column, and are then treated with an organic solvent of boiling range from 180.degree. to 290.degree. C. in a second column, the phthalic anhydride and maleic anhydride being isolated from the liquid bottom product of the first column.
REFERENCES:
patent: 2140140 (1938-12-01), Punnett
patent: 2683110 (1954-07-01), Rousseau
patent: 2770630 (1956-11-01), Miller
patent: 2893924 (1959-07-01), Courtier
patent: 2942005 (1960-06-01), Brown et al.
patent: 3040060 (1962-06-01), Kulik
patent: 4008255 (1977-02-01), Wirth et al.
patent: 4071540 (1978-01-01), Marquis
patent: 4285871 (1981-08-01), Keunecke et al.
Norman, W. S., Absorption, Distillation and Cooling Towers, John Wiley & Sons Inc., N.Y., 1961, pp. 80-81.
Danz Eckehard
Dumbgen Gerd
Miesen Ernest
Schmidt Johannes E.
Wirth Friedrich
BASF - Aktiengesellschaft
Bashore S. Leon
Manoharan V.
LandOfFree
Continuous isolation of phthalic anhydride and maleic anhydride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous isolation of phthalic anhydride and maleic anhydride , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous isolation of phthalic anhydride and maleic anhydride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2339090