Recovery of caprolactam from process residues

Details Recovery of caprolactam from process residues Recovery of caprolactam from process residues

1984-06-27

1986-04-15

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D20112

Patent

active

045826420

ABSTRACT:
This invention is a method to recover caprolactam from a combined stream of mother liquor from a caprolactam crystallizer and other lactam containing aqueous streams, the improvement comprising steam distilling the combined stream at a temperature of from between about 180.degree. C. to 235.degree. C. in the absence of any depolymerization agent such as phosphoric acid; so that the residue from the steam distilling remains fluid; relatively low levels of caprolactam remain in the residue; less residue is generated; the recovered caprolactam has improved high quality; and losses of caprolactam due to side reactions are reduced.

REFERENCES:
patent: 4107160 (1978-08-01), Dicoi
patent: 4148793 (1979-04-01), Danziger

Affiliated with

Also associated with

Rating

Recovery of caprolactam from process residues does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery of caprolactam from process residues, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of caprolactam from process residues will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1437595