Molten sulfate-carbonate liquids in the effluents of wood combustion for power production

摘要

Calculations of the combustion effluents of aspen wood chips indicate that molten and solid K(sup +),Ca(sup 2+)/CO(sub 3)(sup 2(minus)), SO(sub 4)(sup 2(minus)) solutions were formed. At 4 atm above 1000C, a potassium sulfate-rich liquid forms; a corrosive carbonate-rich liquid forms between 875--800C. These results suggested increasing the temperature range of operation of a gravel bed combustor in a test of a gravel-bed-combuster /gas-turbine system from 800--900C to 900--1000C which improved the bed performance considerably. A method deducted for hot gas cleanup could be effective enough to eliminate condensates on the turbine at lower temperatures.