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Safe Acid Cleaning Technolog Safe Acid Cleaning Technolog Safe Acid Cleaning Technology Safe Acid Cleaning Technology AdvancesAdvances

PaperCon 2011 Page 91

TITLE: Safe Acid CleaningTITLE: Safe Acid Cleaning Technology Advances

ABSTRACT: Acid Salt technology has been developed that provides safer, more environmentally friendly cleaning chemicals. This new technology is used to replace hydrofluoric and other acids in a variety of Pulp & Paper cleaning applications including dryer hoodPaper cleaning applications, including, dryer hood cleaning, false ceiling, building siding, and aluminum insulation cleaning.

PaperCon 2011 Page 92

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What is Safe?What is Safe?What is Safe?What is Safe?Safe = Not HazardousSafe = Not Hazardous

OSHA Hazard Communication Standard (29 CFR 1910.1200)"Hazardous chemical" means any chemical which is a physical hazard or a health hazard

EPASARA 302 (CERCLA RQ’s)( Q )SARA 311/312 (Tier 2 Annual Reporting)SARA 313 (Toxic Chemicals)

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Sulfuric Acid

Hydrochloric Acid

H drofl oric AcidHydrofluoric Acid

Sulfamic Acid

Phosphoric Acid

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Aluminum CleaningAluminum Cleaning

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Exchanger CleaningsExchanger Cleanings

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Scale RemovalScale Removal

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pH controlpH control

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Safe Acid Cleaning Safe Acid Cleaning Safe Acid Cleaning Safe Acid Cleaning Technology AdvancesTechnology Advances

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Hydrofluoric acid is a highly corrosive liquid and is a contact poison contact poison.

Owing to its low dissociation constant, HF as a neutral lipid-soluble molecule penetrates tissue more rapidly than typical mineral acids than typical mineral acids.

Because of the ability of hydrofluoric acid to penetrate tissue, poisoning can occur readily through exposure of skin or eyes, or when inhaled or swallowed. Symptoms of y , y pexposure to hydrofluoric acid may not be immediately evident.

HF interferes with nerve function, meaning that burns may not initially be painful. Accidental exposures can go unnoticed, delaying treatment and increasing the extent and seriousness of the injury

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Hydrofluoric acid+

Ammonia

Ammonium Bifluoride

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Ammonium Bifluoride

HClH2SO4

H3PO4

Surfactants Water

Hydrofluoric Acid

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Patented molecules Replacement for ABF

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ABF Replacement

Organic Acid Salt

Surfactants Water

No Hydrofluoric Acid

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OSHA and EPA “Safe”

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PaperCon 2011 Page 106