Cleaning and liquid contact with solids – Processes – Combined
Patent
1985-02-21
1986-06-03
Hunter, Jeanette
Cleaning and liquid contact with solids
Processes
Combined
134 252, 134113, 134 56D, 134 57D, B08B 704
Patent
active
045927855
ABSTRACT:
A process for automated and improved proteinaceous soil removal in a wash water solution wherein alkali is first added to the wash water solution to bring the pH thereof to slightly below a selected target pH value in the range of 10 to 11 that will be effective to react with and solubilize the proteinaceous soil. To that wash water solution 5 to 50 milligrams of hypohalous halogen per liter of wash water solution and sufficient alkali is added to raise the pH of the wash water solution to the target pH value. The wash water solution is monitored to detect a drop in pH of at least 0.02 pH units occurring after the addition of the hypohalous halogen. If there is no such drop in pH then the process is terminated. If there is at least a 0.02 pH units drop in pH then an incremental amount of hypohalous halogen and sufficient alkali are added to the solution to again raise the pH of the water solution to the target pH. This cycle continues until there is less then 0.02 pH units drop thereby insuring substantially complete reaction with the proteinaceous soil.
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Kaufman Charles D.
Reinert Raymond L.
General Electric Company
Hunter Jeanette
Reams Radford M.
Weidner Frederick P.
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