Filtering process for a carbon black-containing gas

Details Filtering process for a carbon black-containing gas Filtering process for a carbon black-containing gas

1978-05-04

1980-03-04

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55 97, 55302, B01D 4604

Patent

active

041915429

ABSTRACT:
A process for filtering carbon black-containing gas wherein an optimum of carbon black recovery is achieved by filtering at least the critical filtration time and up to 50 percent, preferably up to 20 percent, longer than said critical filtration time before backflowing. The critical filtration time is that filtration phase at which the linearly plotted curve of the initial pressure drop versus the filtration phase has an inflection point. Specific formulae are given for a Teflon filter bag and carbon blacks of about 80 to about 130 square meters per gram nitrogen surface area.

REFERENCES:
patent: 2805732 (1957-09-01), Martinez
patent: 3243940 (1966-04-01), Larson
patent: 3499315 (1970-03-01), Marino
patent: 3716971 (1973-02-01), Reinauer
Walling-Ins & Outs of Gas Filter Bags in Chemical Engineering 10/19/70 pp. 162-167.
Chard et al. Anomalous Behavior of Air Filters in Filtration & Separation Nov., Dec., 1973, pp. 701-705.

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