СПОСОБ УМЕНЬШЕНИЯ ВЫБРОСОВ ДВУОКИСИ СЕРЫ ПРИ СЖИГАНИИ УГЛЕЙ

摘要

A process of treating high sulfur coal to reduce sulfur dioxide emission when the high sulfur coal is burned comprising placing coal in pressure tank ( 16 ) of reduced pressure sufficient to fracture a portion of the coal by withdrawing ambient fluids trapped within the coal. The fractured coal is contacted with an aqueous silica colloid composition supersaturated with calcium carbonate via conduit ( 21 ), and the majority of the aqueous composition is then removed from contact with the coal. The aqueous composition-treated coal is pressurized in pressure tank ( 16 ) under a carbon dioxide atmosphere for a period of time sufficient for the calcium carbonate to enter fractures in the coal produced in the first step.