High pressure method for producing pure melamine in a...

Details High pressure method for producing pure melamine in a... High pressure method for producing pure melamine in a...

2008-05-20

2008-05-20

Balasubram, Venkataraman (Department: 1624)

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C544S203000

Reexamination Certificate

active

07375223

ABSTRACT:
The invention relates to a high pressure method for producing pure melamine by pyrolyzing urea in a vertical synthesis reactor. The synthesis reactor has three stages above one another: a) in the first stage, the smaller portion of the total amount of urea is introduced into the central tube of a first tank reactor forming a first melamine-containing reaction medium; b) in the second stage, the first melamine-containing reaction medium and the larger portion of the total amount of urea is introduced into the central tube of a second tank reactor forming a second melamine-containing reaction medium; c) in the third stage, the second melamine-containing reaction medium is introduced into a vertical tubular flow reactor forming a raw melamine melt that is processed to obtain pure melamine.

REFERENCES:
patent: 409 489 (2002-08-01), None
patent: 410 210 (2003-03-01), None
patent: 99/00374 (1999-01-01), None

Affiliated with

Also associated with

Rating

High pressure method for producing pure melamine in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High pressure method for producing pure melamine in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High pressure method for producing pure melamine in a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2809969