Method of processing kiln exhaust gases by chlorine bypass system and apparatus therefor
US5937771A · kind A · utility
6Cited by
10References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 28, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Jul 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B7/436
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In the processing of exhaust gases by a chlorine bypass system, a portion of kiln exhaust gases G is extracted from a kiln 1, after the extracted exhaust gases G are instantly cooled to 600.degree. C. to 700.degree. C. or less, the dust W in the cooled exhaust gases is separated to rough powder and fine powder by a separator, the separated rough powder is returned to the kiln 1 and the separated fine powder is discharged to a cement system, wherein extracting means extracts the kiln exhaust gases at the ratio more than 0% to equal to or less than 5% and the separating point of the separator is set to 5 .mu.m to 7 .mu.m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.