Sodium ion removal from acetone cyanohydrin

Details Sodium ion removal from acetone cyanohydrin Sodium ion removal from acetone cyanohydrin

1977-11-03

1978-12-19

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12136

Patent

active

041305809

ABSTRACT:
In a process for the preparation of acetone cyanohydrin by the reaction of acetone and hydrocyanic acid in the presence of a sodium hydroxide catalyst, the method of removal of corrosion inducing sodium ion during the purification of the crude acetone cyanohydrin, involving the steps of (1) passing a cooled crude acetone cyanohydrin feedstream through a cationic ion exchange resin to remove substantially all of the sodium ion; (2) regenerating exhausted ion exchange resin; (3) acidifying the substantially sodium ion-free crude feedstream to a pH of 1.5-2.0 to stabilize said crude acetone cyanohydrin; (4) feeding the acidified substantially sodium ion-free crude feedstream to a first concentrator; (5) removing overhead, from the first concentrator, unreacted acetone and sending the bottoms from said first concentrator to a second concentrator; and (6) removing purified acetone cyanohydrin as bottoms from the second concentrator and recycling the overhead for further generation of acetone cyanohydrin.

REFERENCES:
patent: 2444589 (1948-07-01), Blann
patent: 2537814 (1951-01-01), Davis
patent: 2982779 (1961-05-01), Fierce et al.
patent: 3700718 (1972-10-01), Yamagishi et al.

Affiliated with

Also associated with

Rating

Sodium ion removal from acetone cyanohydrin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sodium ion removal from acetone cyanohydrin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sodium ion removal from acetone cyanohydrin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2373120