A fluid-bed heat exchanger, fluid-bed combustion reactor systems and methods for the operation of a fluid-bed heat exchanger and a fluid-bed combustion reactor system

摘要

A fluid-bed heat exchanger (36) constitutes a component of a fluid-bed combustion reactor system (10) for establishing heat transfer from heated particulate material fluidized within the fluid-bed heat exchanger (36) to heat transfer means (62) contained within said fluid-bed heat exchanger. The heat transfer means are internally carrying a heat-transfer medium. The fluid-bed heat exchanger comprises gas inlet means (86) for the introduction of a non-aggressive, substantially oxygen-free gas for the fluidization of said particulate material by means of the non-aggressive, substantially oxygen-free gas for preventing the formation of deposits on the heat transfer means and for preventing the corrosion of the heat transfer means.