Nalco Chemical Company

Morris Mindick

Barry E Hunt

Kyu-Hwa Lee

Harvey M Herro

Larry P Koskan

Robert R Patzelt

Peter H Vossos

Robert J Meade

In a method of recovering volatile organic paint carrier from paint spray booths and also collecting, detackifying, and dispersing paint solids obtained from paint overspray in said paint spray booths, which paint spray booths are of the type comprising a chamber, a duct system for passing air through said chamber, an exhaust system connected to said duct system, a sump containing a circulating hydrophilic liquid which is pumped onto a means for forming a liquid curtain of said hydrophilic liquid, said liquid curtain being contacted by oversprayed paint and volatile organic paint carrier; the improvement which comprises using as the hydrophilic liquid an improved oil-in-water emulsion maintained at a pH value ranging from 7.5-11.0, which emulsion consists essentially of the ingredients:

Paint detackification using an improved oil-in-water emulsion with

The invention comprises a method for determining the corrosion rate of metals in contact with a liquid system which is capable of causing corrosion of such metals which comprises adding to the liquid system an electrochemically active compound having a reduction potential more positive than the metal in contact with the liquid system and then monitoring the system thus treated with the electrochemically active compound to determine its rate of reduction which is proportional to the corrosion rate of the metal.

Method for in situ corrosion detection using electrochemically active

SO.sub.3 is removed from flue gas by injecting liquid sodium aluminate, achieving essentially complete SO.sub.3 removal.

Sodium aluminate to reduce flue gas corrosion

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Downers Grove, IL, United States of America

Morris Mindick