Reduction of HCl emissions from a bituminous coal-fired fluidised bed boiler by additive injection

摘要

Since 1994, the Technical Department of the City of Stuttgart has been operating at Stuttgart-Gaisburg combined heat and power station a steam generator with circulating atmospheric fluidised bed combustion (CAFBC). Bituminous coal is usedexclusively as the fuel. The commissioning of the CAFBC plant at Gaisburg Power Station demonstrated that only through CaCO{sub}3 additive into the combustion chamber was very good sulphur but inadequate chlorine-retention attained. A plant has thereforebeen retrofitted for the injection of dry additive before the air heater and the fabric filter. This paper reports experience and the results.