Calcium Sulfate → Sulfur Dioxide

Participants

Reaction Steps

A method of increasing the sulfation capacity of particulate calcium carbonate for reaction with sulfur dioxide comprising contacting the sulfur dioxide and the calcium carbonate particles at elevated temperatures in the range of from about 700° C. to about 900° C. to form particles of calcium oxide and calcium sulfate, hydrating said particles to form particles of calcium hydroxide and calcium sulfate and dehydrating the particles of calcium hydroxide and calcium sulfate at elevated temperatures to form particles of calcium oxide and calcium sulfate capable of additional sulfation upon contact with sulfur dioxide at suitable temperatures.

Provenance & Evidence