High-efficiency method for converting limestone to slaked lime

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United States of America

PATENT NO 12246991
SERIAL NO

18957760

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Abstract

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A chemical processing method includes decomposing a metal carbonate in a first tube by exposure to a first quantity of heat, producing a metal oxide and carbon dioxide; and hydrating the metal oxide in a second tube concentric with the first, by exposure to steam, producing a metal hydroxide and a second quantity of heat. The partial pressure of the steam and/or of the carbon dioxide is controlled so that the hydration reaction occurs at a second temperature above a first temperature at which the decomposition reaction occurs. The inner one of the concentric tubes has an inner tube wall. At least some of the second quantity of heat flows from the second tube through the inner tube wall to the first tube, providing at least a part of the first quantity of heat.

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Patent Owner(s)

Patent OwnerAddress
KESHNER MARVIN SSONORA CA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Keshner, Marvin S Sonora, US 27 551
Vaaler, Erik Garth Redwood City, US 8 6

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