METHOD OF CLEANING BEER KEGS, BREWERY, WINERY AND DAIRY PROCESS EQUIPMENT
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United States of America Patent
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app pub date -
Jul 3, 2012
filing date -
Sep 19, 2008
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Abstract
A method for cleaning used storage or processing liquid containers employing an aqueous solution of phosphoric acid, nitric acid and one or more surfactants, e.g., a detergent and/or wetting agent. Preferably, the aqueous cleaning solution has a total nitric acid content of 12 wt % or less. Complete cleaning can be achieved without using any caustic. The cleaning solution can be recycled repeatedly to clean multiple containers on numerous occasions over a period of time, e.g., several weeks.
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