Material for a facility for the production of anhydrous...

Details Material for a facility for the production of anhydrous... Material for a facility for the production of anhydrous...

2007-07-10

2007-07-10

Manoharan, Virginia (Department: 1764)

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

C202S155000, C202S169000, C202S267100, C203S043000, C203S046000, C203S060000, C203S071000, C203S086000, C420S586000, C562S609000

Reexamination Certificate

active

10181814

ABSTRACT:
The invention relates to an apparatus and a process for the preparation of anhydrous or substantially anhydrous formic acid. This apparatus is constructed partly or entirely of substantially zirconium-free materials. The extractant employed is a liquid of the general formula Iwhere the radicals R1and R2are alkyl, cycloalkyl, aryl or aralkyl groups, or R1and R2jointly, together with the N atom, form a heterocyclic 5- or 6-membered ring, and only one of the radicals is an aryl group, and where R3is hydrogen or a C1–C4-alkyl group. The apparatus has a synthesis reactor (6), a hydrolysis reactor (1), three distillation devices (2,4,5) and an extraction device (3).

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