| 摘要 |
<p>The operation of gas turbines in combined cycle or cogeneration plants utilizing circulating fluidized beds is improved by increasing the temperature of the air supplied them. The temperature of bed solids circulating through an external heat exchanger is raised by combusting fuel in a combustion-augmenting zone through which the circulating solids pass. The gaseous products of combustion from that zone are introduced into the fluidized bed combustor. Thus the fluidized bed combustor operates at temperatures affording optimum sulfur removal by sulfur absorbing materials, the combustion-augmenting zone operates at an appreciably higher temperature to provide increased heat transfer to the compressed air for the gas turbine, and the off gases from the combustion-augmenting zone, which may be high in sulfur, are cooled in the combustor so as to bring about their desulfurization therein. Suitable apparatus is provided.</p> |
