Record Display for the EPA National Library Catalog

RECORD NUMBER: 139 OF 245

Main Title Keytone Recovery from Manufacture of Magnetic Audio/Video Tapes.
Author Gould, J. ;
CORP Author Environmental Protection Agency, Washington, DC. Office of Water Enforcement and Permits.
Publisher May 85
Year Published 1985
Stock Number PB95-237673
Additional Subjects Solvent recovery ; Ketones ; Distillation ; Air pollution control equipment ; Solvents ; Emissions ; Manufacturing ; Video tapes ; Audio tapes ; Magnetic tapes ; Cassettes ; Reprints ; Steam removal
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB95-237673 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Abstract
The process utilizes steam removal and distillation for recovery of the solvent. A solvent recovery system was installed at an audio/video tape production plant in Hong Kong to reduce the solvent emissions. The combined solvent recovery/distillation unit handles 12,000 CFM of solvent-laden air. The presence of ketones presented a design consideration due to their solubility in water. The distillation unit utilized steam to remove solvent at concentrations of up to 98 percent. The solvent is reused directly in the tape manufacturing process, while the separated water is recycled back to the distillation system.