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
Discharge lamp comprising coated electrode
Unsupervised document clustering using latent semantic density analysis
Cell surface display, screening and production of proteins of interest
Performance monitoring of advanced process control systems
Loudspeaker grille
Semiconductor device and method for manufacturing same
Commissioning incoming packet switched connections
  Randomly Featured Patents
Fluorenyl derivatives
Methods and reagents for preparing and using immunological agents specific for P-glycoprotein
Method of diagnosing, tracking, and treating depression
Plant gene encoding acetyl coenzyme a carboxylase biotin carboxyl carrier protein
Continuous polymerization apparatus and process
Degradation-resistant fibrinogen sealants
Castable refractory
Moisture detector
Electrophoretic medium and process for the production thereof
Wiring design processing method and wiring design processing apparatus