Direct catalytic reduction of sulfur dioxide to elemental sulfur

摘要

More than 170 wet scrubber systems applied to 72,000 MW of U.S.,coal-fired,utility boilers are in operation or under construction. A small fraction (of order 1 percent~2) of these systems produce a useable byproduct (gypsum):the remainder generate approximately 20 million tons per annum of disposable flue gas desulfurization (FGD) byproduct.which are transported and disposed of in landfills~3.The use of regenerable sorbent technologies has the potential to reduce or eliminate this solid waste production,transportation and disposal.