Electrification in Flow of Alcohol-Freon Mixtures through Solid Filter Beds.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1971
- Accession Number
- AD0728807
Entities
People
- Maurice S. Kirshenbaum
- Richard R. Fyfe
Organizations
- Picatinny Arsenal