Process and equipment for the hydrolysis of residual urea in the water from synthesis plants
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United States of America Patent
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Mar 21, 1995
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N/A
app pub date -
Oct 23, 1992
filing date -
Oct 23, 1991
priority date (Note) -
Expired
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Abstract
Process for the hydrolysis of urea contained in the process water from plants for the synthesis of urea consisting of the thermic treatment of the water containing urea and of the removal by stripping of the compounds from decomposition of the urea (CO.sub.2 and NH.sub.3) in a series of stages in series with superimposed flow. The equipment is a vertical column with superimposed modules with weirs which penetrate in two successive modules and give the solution a rising movement.
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