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US 5,342,578 AGranted
Corrosion inhibition of ammonia-water absorption chillers
AssigneeGas Research Institute
InventorsArun K. Agrawal, Barry Hindin
Life of this patent
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Abstract
A method of inhibiting corrosion in ammonia-water absorption machines that includes adding to an ammonia-water solution soluble silicon compounds. Examples of these silicon compounds include sodium silicate (Na.sub.2 SiO.sub.3), potassium silicate (K.sub.2 SiO.sub.3), lithium silicate (Li.sub.2 SiO.sub.3), silicic acid (H.sub.2 SiO.sub.5), and tetramethoxysilane (CH.sub.3 O).sub.4 Si. Sodium silicate is revealed as the preferred embodiment.
Claims7
A method of inhibiting corrosion of an apparatus employing ammonia-water absorption cycles comprising:
- (a) charging the apparatus with a solution of ammonia and water and
- (b) dissolving in said solution a silicon compound.
Dependencies are inferred from the claim text.