Process for the recovery of maleic anhydride from distillation r

Details Process for the recovery of maleic anhydride from distillation r Process for the recovery of maleic anhydride from distillation r

1978-10-26

1980-08-26

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

26034676, B01D 310, C07D30789

Patent

active

042193885

ABSTRACT:
A process for the recovery of maleic anhydride from distillation residues containing the same is described whereby a residue containing phthalic anhydride is added to the residue of maleic anhydride prior to or after distillation of the maleic anhydride residue. By such a process maleic anhydride recovery is improved and the distillation residue remaining from distillation of the maleic anhydride out of the maleic anhydride residue remains removable by simple mechanical means from the distillation vessel.

REFERENCES:
patent: 2670355 (1954-02-01), Barsky et al.
patent: 3865849 (1975-02-01), Garkish et al.
patent: 3965126 (1976-06-01), Wirth et al.
patent: 4118403 (1978-10-01), White

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