Accession Number:
AD0728807
Title:
Electrification in Flow of Alcohol-Freon Mixtures through Solid Filter Beds.
Descriptive Note:
Technical rept.,
Corporate Author:
PICATINNY ARSENAL DOVER N J
Personal Author(s):
Report Date:
1971-06-01
Pagination or Media Count:
70.0
Abstract:
The report presents results of laboratory experiments simulating the washing and filtration operations in a typical metastable materials process line with regard to generation, transport, and relaxation of electrostatic charge. The metastable material filter bed was simulated b9y a precisely characterizable filter disk. Wash fluids used were Freon and its admixtures with methanol and ethanol. Streaming current, potential rise rate, and relaxation half-times were determined for each admixture system, varying the alcohol content in a given mixture from 0 to 100 volume percent. Results indicate that behavior with regard to electrostatic charge is a definite function of the volume percent alcohol in Freon-alcohol mixtures used as a wash fluids for the inert simulated filter beds studied. Also, the electrostatic charge behavior was significantly different in Freon-methanol-inert filter systems than in Freon-ethanol-inert ones. Based on the experimental results, a scheme is presented to the engineer for assessment of danger zones with respect to electrostatic hazards in a given process design. Author
Descriptors:
Subject Categories:
- Industrial Chemistry and Chemical Processing
- Ammunition and Explosives