Exhaust gas treatment method and system in cement burning...

Details Exhaust gas treatment method and system in cement burning... Exhaust gas treatment method and system in cement burning...

2007-12-19

2011-10-18

Lawrence, Jr., Frank (Department: 1776)

Gas separation: processes

With control responsive to sensed condition

C095S271000, C106S751000, C423S24000R

Reexamination Certificate

active

08038768

ABSTRACT:
An exhaust gas treatment method and system of a cement burning facility, wherein a chlorine concentration of the collected fine powder dust is set in a range of 5 to 20% in such a manner that when a part of exhaust gas is extracted as extracted gas from a lowermost part of a preheater, or a kiln inlet part of a cement kiln, a cement raw material is dispersed and the temperature of the extracted gas is held in a range of 950° to 1150° C. By adjusting the dispersion amount of the cement raw material, the extracted gas is cooled to a melting point or less of a chlorine compound, and a classification particle size in a solid-gas separator is then adjusted in a range of 12 μm to 30 μm, to separate for removal and collection fine powder dust.

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