Quench Design: Emissions Reduction and Pollution Prevention

Abstract

Attention to quench design can lead to significant reductions in air emissions and reduce the water consumption of an incineration system. Potential problems with partial quench designs found on systems with boilers or baghouses are well known, while the rapid quench is recognized as the state of the art for low dioxin emissions. In addition to its primary function of cooling combustion gases, the ability of the quench to remove particulate matter, acid gases, and even metals are discussed. Emphasis is placed on ways water management and system design can impact quench performance. Three case studies are provided to illustrate these points.