Process for the in-line hydrolysis of urea

Details Process for the in-line hydrolysis of urea Process for the in-line hydrolysis of urea

1990-08-01

1993-08-31

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423358, C01B 2100

Patent

active

052406881

ABSTRACT:
The present invention relates to a process for the in-line hydrolysis of urea. More particularly, the process involves heating an aqueous solution of urea while flowing through a conduit to a temperature and for a time effective to hydrolyze urea to produce hydrolysis products comprising ammonium carbamate, ammonium carbonate, ammonium bicarbonate, and ammonia. The hydrolysis products are useful for the reduction of nitrogen oxides in combustion effluents without the generation of substantial amounts of nitrous oxide.

REFERENCES:
patent: 3900554 (1975-08-01), Lyon
patent: 4087513 (1978-05-01), Schell
patent: 4119702 (1978-10-01), Azuhata et al.
patent: 4168299 (1979-09-01), Schell
patent: 4208386 (1980-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4777024 (1988-10-01), Epperly et al.
patent: 4780289 (1988-10-01), Epperly et al.
patent: 4946659 (1990-08-01), Held et al.

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