Recovery of maleic anhydride

Details Recovery of maleic anhydride Recovery of maleic anhydride

1976-11-18

1978-10-03

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30760

Patent

active

041184033

ABSTRACT:
Maleic anhydride is recovered in high yields from gaseous mixtures containing the maleic anhydride in the vapor phase by cooling the gaseous mixture containing the maleic anhydride to a temperature above the dew point of water in the gaseous mixture, and then scrubbing the gaseous mixture with a solvent which comprises a phthalate ester, preferably dibutyl phthalate, and up to 10 weight percent phthalic anhydride. Thereafter, the maleic anhydride is stripped from the solvent in a one-step operation, and the solvent is thereafter recycled to the scrubbing step.

REFERENCES:
patent: 2942005 (1960-06-01), Brown et al.

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