Process for recovering caprolactam
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United States of America Patent
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Nov 28, 2006
Grant Date -
Aug 11, 2005
app pub date -
Nov 25, 2002
filing date -
Nov 26, 2001
priority date (Note) -
Expired
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Abstract
The invention relates to a process for recovering caprolactam from a mixture comprising caprolactam, water, light and heavy components, by subjecting the mixture to a first vacuum distillation resulting in a first bottom product comprising heavy components and caprolactam and in a fist overhead product comprising caprolactam, water, unsaturated lactams and light components; and subjecting at least part of the unsaturated lactams to a hydrogenation.
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