Method for production of hydroxylammonium phosphate in the...

Details Method for production of hydroxylammonium phosphate in the... Method for production of hydroxylammonium phosphate in the...

C - Chemistry, Metallurgy

07

D

C07D 223/10 (2006.01) C07D 201/06 (2006.01) C07D 201/10 (2006.01)

Patent

CA 2293010

A method for production of caprolactam. The method involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing at least a portion of the nitric oxide to nitrogen dioxide to produce an NO x-rich process gas stream; (c) reactively absorbing the NO x-rich gas stream with phosphoric acid containing solution in an absorption zone to form nitrate ions; (d) contacting the nitrate ions with air in a degassing zone to produce a nitrate-rich aqueous process stream; (e) reducing the nitrate-rich aqueous stream with hydrogen in the presence of phosphoric acid to produce hydroxylammonium phosphate; (f) oximating the hydroxylammonium phosphate with cyclohexanone to produce cyclohexanone oxime; and (g) converting the cyclohexanone oxime to caprolactam. According to the invention, supplemental oxygen is added downstream of the ammonia conversion zone to increase the quantity and rate of formation of nitrogen dioxide in the NO x-rich process gas stream.

Affiliated with

Also associated with

Rating

Method for production of hydroxylammonium phosphate in the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for production of hydroxylammonium phosphate in the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for production of hydroxylammonium phosphate in the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1717531