Distillation: processes – separatory – With disparate physical separation – Utilizing liquid sorption of component from gas or vapor
Patent
1995-07-07
1998-04-28
Manoharan, Virginia
Distillation: processes, separatory
With disparate physical separation
Utilizing liquid sorption of component from gas or vapor
203 73, 203 80, 203DIG14, 95232, 159 243, 159 472, 159DIG16, 202173, 202183, 2021852, 202205, 564 73, B01D 128, B01D 310
Patent
active
057440093
ABSTRACT:
An improved urea recovery process is presented. In the improved process, multiple vacuum rated surface condensers used to condense water vapor evolved during urea vacuum evaporation/concentration are replaced by a direct contact cooler/absorber to obtain substantial capital and utility cost savings. Improved heat exchange efficiency of the present process significantly reduces cooling water usage in comparison to the surface condensers.
REFERENCES:
patent: 2682499 (1954-06-01), Thurman
patent: 3711544 (1973-01-01), Summerville
patent: 3985523 (1976-10-01), Kaupas et al.
patent: 4003801 (1977-01-01), Chikaoka et al.
patent: 4256662 (1981-03-01), Gorlousky et al.
patent: 4311856 (1982-01-01), Inoue et al.
Czuppon Thomas Anthony
Singh Vishnu Deo
Strait Richard Bruce
Manoharan Virginia
The M. W. Kellogg Company
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