Back to results
US 4,107,277 AGranted
Process for production of ammonia
OwnerAldo Vieira da Rosainventor
Life of this patent
Estimating the term…
Abstract
An improved process for the production of ammonia by the synthesis of hydrogen and nitrogen employs a high pressure electrolyzer to produce hydrogen at the high pressures required by the ammonia synthesis process without use of mechanical compressors, utilizes the byproduct high pressure oxygen for refrigeration purposes needed in the process and combines hydrogen and nitrogen in a high pressure reactor. Steam formed in the cooling of the reactor is used to generate electricity for use in the electrolyzer to produce the hydrogen and the oxygen.
Claims3
A process for the production of ammonia comprising the steps:
- subjecting water to electrolysis in a high pressure electrolyzer to produce hydrogen and oxygen at relatively high pressures;
- introducing said high pressure hydrogen so produced into a synthesis loop comprising a recycle compressor, a chilling vessel, a reactor vessel, and interconnecting piping;
- expanding said high pressure oxygen so produced in a first heat exchanger having a refrigerant circulating loop thereby effecting the cooling of said refrigerant;
- circulating said refrigerant through said refrigerant circulating loop and through a second heat exchanger;
- introducing nitrogen into said second heat exchanger thereby effecting liquefaction of said nitrogen;
- introducing said liquid nitrogen into said chilling vessel thereby vaporizing said nitrogen and forming a mixture with said hydrogen from said synthesis loop and simultaneously cooling said mixture;
- introducing said mixture of hydrogen and nitrogen into said reactor vessel thereby producing ammonia vapor;
- circulating said ammonia vapor through said chilling vessel;
- condensing said ammonia vapor in said chilling vessel;
- removing said ammonia from said chilling vessel.
7 more elements
Dependencies are inferred from the claim text.