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

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

Distribution Statement:

APPROVED FOR PUBLIC RELEASE