Process for the preparation of urea
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United States of America Patent
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Oct 14, 2003
Issued Date -
N/A
app pub date -
Apr 22, 2002
filing date -
Oct 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process for the preparation of urea from ammonia and carbon dioxide in which the composition of the various process streams is measured via an ultrasonic measuring principle and in which the results of these measurements are used for process control. The process is particularly suitable for continuous measurements in a urea process.
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