Process and equipment for the hydrolysis of residual urea in the

Details Process and equipment for the hydrolysis of residual urea in the Process and equipment for the hydrolysis of residual urea in the

1992-10-23

1995-03-21

Hollrah, Glennon H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

210750, 210752, 423358, 564 32, C07C27314

Patent

active

053997557

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.

REFERENCES:
patent: 4341640 (1982-07-01), Landis
patent: 4456535 (1984-07-01), Zuidam et al.
patent: 4552979 (1985-11-01), Stokes
patent: 5223238 (1993-06-01), Czuppon

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