DEVELOPMENT OF THE AMMONIA INJECTION TECHNOLOGY (AIT) FOR THE CONTROLOF PCDD PCDF AND ACID GASES FROM MUNICIPAL SOLID-WASTE INCINERATORS

This article describes the development of the Ammonia Injection Techno logy (AIT), a technology for the simultaneous control of the emissions of PCDD/PCDF (polychlorinated p-dibenzodioxins and polychlorinated di benzofurans), HCl, SO2 and NO(x) from municipal solid waste incinerato rs. It briefly reviews the theoretical basis of the technology and the bench-scale and pilot-scale experiments. It describes the results of the pilot-scale experiment in detail and reports on the finding that t he formation of PCDD and PCDF takes place in different regions of the boiler system. Finally, a concept is introduced for the treatment of e mission control residues which could lead to the recovery of chlorine from waste products and its ''recycle'' to the chlorine manufacturing process (''closed chlorine life cycle'' concept).