Slag processing system for direct coal-fired gas turbines

Patent · Mon Jan 01 04:00:00 EST 1990

OSTI ID:867549

Pillsbury, Paul W ^[1]

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1. Winter Springs, FL

Direct coal-fired gas turbine systems and methods for their operation are provided by this invention. The gas turbine system includes a primary zone for burning coal in the presence of compressed air to produce hot combustion gases and debris, such as molten slag. The turbine system further includes a secondary combustion zone for the lean combustion of the hot combustion gases. The operation of the system is improved by the addition of a cyclone separator for removing debris from the hot combustion gases. The cyclone separator is disposed between the primary and secondary combustion zones and is in pressurized communication with these zones. In a novel aspect of the invention, the cyclone separator includes an integrally disposed impact separator for at least separating a portion of the molten slag from the hot combustion gases.

• Research Organization: WESTINGHOUSE ELECTRIC CORP
• DOE Contract Number: AC21-86MC23167
• Assignee: Westinghouse Electric Corp. (Pittsburgh, PA)
• Patent Number(s): US 4961389
• OSTI ID: 867549
• Country of Publication: United States
• Language: English

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communication
compressed
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cyclone
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debris
direct
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molten
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removing
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secondary
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