Process and equipment for the hydrolysis of residual urea in the water from urea synthesis plants.

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专利权人:

UREA CASALE S.A.

发明人:

LAGANA', VINCENZO

申请号：

EP19920118068

公开号：

EP0538848(A1)

申请日:

1992.10.22

申请国别(地区):

欧洲专利局

年份:

1993

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 (S1,S2,S3...) with weirs (TP1,TP2,TP3...) which penetratein two successive modules and give the solution a rising movement. <IMAGE>

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