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
Cucumber plants with a compact growing habit
Reconfigurable barrel shifter and rotator
Out-of-order load/store queue structure
Nanocatalysts structure, process for the preparation and use thereof
Rewarding independent influencers
Method and system for advertisement using internet browser to insert advertisements
Techniques for generating and displaying a visual flow of user content through a social network
  Randomly Featured Patents
Telecommunication fiber optic cable distribution apparatus
Etch apparatus
Remote editor system
Thermosensitive recording composition and thermosensitive recording material using the same
Conveyor link and capsule guide for printers
Lamp
Self-cooled process for extracting heavy hydrocarbon fractions
Field emission display cathode assembly with gate buffer layer
Integrated system and method for analyzing derivative securities
Automatic and semi-automatic image classification, annotation and tagging through the use of image acquisition parameters and metadata