Method of conditioning hot gases for filtration

Details Method of conditioning hot gases for filtration Method of conditioning hot gases for filtration

1978-05-25

1980-01-22

Peters, G. O.

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

55 8, C04B 744

Patent

active

041848861

ABSTRACT:
Hot dust laden gases from heated kilns in cement plants are mixed with a cooler moistening medium to provide a mixture having a dew point lying within a temperature range in which dust separation in electrofilters is greatly enhanced. Volatile alkali compounds in the gases condense on the dust particles and are substantially completely filtered out of the gases before discharge of the gases to the atmosphere. The electrical resistance of the dust in the gas is reduced by the moisture from high levels of about 10.sup.15 [ohm.times.cm] to levels below about 10.sup.11 [ohm.times.cm] so that efficient dust precipitation in electrofilters can be effected at low temperatures of about 150.degree. C. and at the same time removal of alkali from the cement clinker is enhanced.

REFERENCES:
patent: 3451665 (1919-06-01), Strassen
patent: 3485012 (1969-12-01), Deussner
patent: 3784389 (1974-06-01), Hastrup
patent: 3923536 (1975-02-01), Kobayashi et al.
patent: 4001031 (1977-01-01), McCord et al.
patent: 4093426 (1978-06-01), Benjumea
patent: 4126471 (1978-11-01), Herchenbach et al.

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