Manufacture of aqueous formaldehyde

Details Manufacture of aqueous formaldehyde Manufacture of aqueous formaldehyde

1981-10-08

1983-05-10

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568493, C07C 47052

Patent

active

043831230

ABSTRACT:
Formaldehyde manufacture by oxidative-dehydrogenation of methanol over a silver or copper catalyst. Aqueous formaldehyde solution is obtained from the reaction and is substantially stripped of methanol by a low energy process at relatively low temperature by means of recycled off-gas in a stripping column comprising at least about 1.5 theoretical transfer units for stripping methanol.

REFERENCES:
patent: 2462413 (1949-02-01), Meath
patent: 3113972 (1963-12-01), Kodama et al.
patent: 3174911 (1965-03-01), Webb et al.
patent: 4119673 (1978-10-01), Aicher et al.

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