Long Life Moving-Bed Zinc Titanate Sorbent

Combined cycles (combinations of a gas turbine and a steam bottoming cycle) are an efficient power generation technology, while coal is the lowest-cost fuel. The combination of Coal Gasifiers and Combined Cycles therefore is predicted to be the lowest-cost source of baseload electric power in the next decade. In a GCC, the sulfur and particulates are removed from the gasifier gases before they enter the turbine combustor. While H2S (and COS/CS2) can be removed effectively by cooling hot gases down to near room temperature and scrubbing them with an aqueous amine solution, removing the H2S without cooling the gases (i.e., hot gas cleanup) is more advantageous.