Date post: | 10-Mar-2018 |
Category: |
Documents |
Upload: | duongduong |
View: | 215 times |
Download: | 2 times |
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
*
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)
PaperCon 2011 Page 93
Sulfuric Acid
Hydrochloric Acid
H drofl oric AcidHydrofluoric Acid
Sulfamic Acid
Phosphoric Acid
PaperCon 2011 Page 94
Aluminum CleaningAluminum Cleaning
PaperCon 2011 Page 95
Exchanger CleaningsExchanger Cleanings
PaperCon 2011 Page 96
Scale RemovalScale Removal
PaperCon 2011 Page 97
pH controlpH control
PaperCon 2011 Page 98
Safe Acid Cleaning Safe Acid Cleaning Safe Acid Cleaning Safe Acid Cleaning Technology AdvancesTechnology Advances
PaperCon 2011 Page 99
*
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
PaperCon 2011 Page 100
Hydrofluoric acid+
Ammonia
Ammonium Bifluoride
PaperCon 2011 Page 101
*
Ammonium Bifluoride
HClH2SO4
H3PO4
Surfactants Water
Hydrofluoric Acid
PaperCon 2011 Page 102
*
Patented molecules Replacement for ABF
PaperCon 2011 Page 103
*
ABF Replacement
Organic Acid Salt
Surfactants Water
No Hydrofluoric Acid
PaperCon 2011 Page 104
*
OSHA and EPA “Safe”
PaperCon 2011 Page 105
**
PaperCon 2011 Page 106