Control of cement clinker production in a wet process rotary kiln by analysis of sulfur in the end product
AssigneeCement Petcoptimizer Company
InventorJoseph Doumet
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Abstract
An apparatus for producing cement clinker using a high sulfur fuel includes a wet rotary kiln, at least one sulfur analyzer, a controller, and a burner. The wet rotary kiln has a first end and a second end and processes a slurry of a raw material mixed with a certain quantity of coarse grinded high sulfur fuel received at the first end to produce cement clinker. The sulfur analyzer is produces a measure of the sulfur content of the cement clinker. The controller receives the measure from the sulfur analyzer and controls a concentration of oxygen in the kiln based on the measured sulfur content in the clinker end product. The burner is installed in the kiln at the second end and operates to burn a high sulfur fuel.
Claims36
An apparatus for producing cement clinker using a high sulfur fuel comprising:
- a wet rotary kiln having a first end and a second end, the kiln being operable to process a slurry of a raw material and water received at the first end to produce cement clinker;
- at least one sulfur analyzer operable to produce a measure of the sulfur content of the cement clinker;
- a controller operable to receive the measure from the sulfur analyzer and to control a concentration of oxygen in the kiln based on the measured sulfur content;
- and
- a burner installed in the kiln at the second end and operable to burn a high sulfur fuel.
A method of producing cement clinker using high sulfur fuel, comprising:
- introducing a slurry of a raw material and water into a wet rotary kiln;
- combusting a high sulfur fuel in the wet rotary kiln;
- passing the mixture through the kiln in the presence of the combusting fuel so as to sinter the raw material to form a sintered material;
- measuring a sulfur content of the sintered material;
- and
- controlling an excess concentration of oxygen in the kiln based on the measured sulfur content.
Dependencies are inferred from the claim text.