Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Process for obtaining nitric acid of a concentration higher than the azeotropic concentration by means of the absorption of nitrogen oxides in water or diluted nitric acid










Image Number 2 for United States Patent #4064221.

The present invention relates to a process for obtaining nitric acid of a concentration higher than the azeotropic concentration by means of the absorption of nitrogen oxides in water or diluted nitric acid and the partial pressure of the nitrogen oxides before absorption is raised partly by compression of the gases that contain the nitrous gases and partly by means of a cycle of diluted nitric acid which is decomposed by the action of the NO contained in the gases, enriching them in NO.sub.2 and which subsequently reform by absorption of NO.sub.2 in water when the partial pressure of the nitrogen oxides is low.








 
 
  Recently Added Patents
Scalable packet processing systems and methods
System and method for judging success or failure of work of robot
Method and system for migrating object update messages through synchronous data propagation
Dynamic learning method and adaptive normal behavior profile (NBP) architecture for providing fast protection of enterprise applications
Vanadium, cobalt and strontium additives for use in aluminum back solar cell contacts
Methods and apparatus for providing video on demand and network PVR functions using IP streaming
Method for producing SOI substrate and SOI substrate
  Randomly Featured Patents
Rack for holding books
Lock mechanism
Piling fabricated from synthetic material
Method, controller and system for controlling the slug flow of a multiphase fluid
Shield cover for braided wire shield
Transparent supports for photographic products
Pipe disconnecting apparatus
Method for rapid, stable torque transition between lean rich combustion modes
Process and apparatus for producing welded can body with an organic coated welded part
Semiconductor memory test apparatus