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Process and equipment for the hydrolysis of residual urea in the water from synthesis plants
专利权人:
UREA CASALE S.A.
发明人:
LAGANA', VINCENZO
申请号:
US19920965741
公开号:
US5399755(A)
申请日:
1992.10.23
申请国别(地区):
美国
年份:
1995
代理人:
摘要:
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 (CO2 and NH3) 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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