Back to results
US 6,309,210 B1Granted
Kiln universal oxygen enrichment
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsOvidiu Marin, Mahendra L. Joshi, Olivier Charon, Jacques Dugue
Life of this patent
Estimating the term…
Abstract
A kiln is provided with oxidant injection locations upstream of air blowers which blow air into the kiln. The addition of oxygen into the kiln increases the cooling capacity of a clinker cooler, and enhances combustion in the kiln.
Claims20
A process of operating a kiln, comprising the steps of:
- providing a kiln including
- a kiln chamber, an inlet, and a clinker outlet,
- a burner positioned so that its flame is directed into said kiln chamber, said burner including a fuel inlet, an oxidant inlet, and an outlet,
- a clinker cooler positioned to receive clinkers from said clinker outlet and including at least one air inlet into said clinker cooler, and
- an oxidant source in fluid communication with said at least one clinker cooler air inlet;
- wherein said oxidant source comprises a non-pure-air oxidant selected from the group consisting of pure oxygen and oxygen-enriched air;
- flowing oxidant from said oxidant source through said at least one clinker cooler air inlet;
- and
- flowing material to be calcined into said kiln chamber to form clinkers.
6 more elements
An improved kiln useful in producing clinkers, comprising:
- a kiln chamber having an inlet and a clinker outlet;
- a burner positioned so that its flame is directed into said kiln chamber, said burner including a fuel inlet, an oxidant inlet, and an outlet;
- a clinker cooler positioned to receive clinkers from said clinker outlet and including at least one air inlet into said clinker cooler;
- an oxidant source in fluid communication with said at least one clinker cooler air inlet;
- wherein said oxidant source comprises a non-pure-air oxidant selected from the group consisting of pure oxygen and oxygen-enriched air.
2 more elements
Dependencies are inferred from the claim text.