ENV-99-186 State of the Art Processes for Handling FCC Flue Gas Emissions

Description:

The treating of FCC flue gas can be viewed as the challenge of solving a series of distinct problems: · scrubber equipment design - efficient gas-liquid contact, removal of flue gas catalyst particles, and management of catalyst carryover · choice of SOx scrubbing liquid and its handling · removal of NOx This paper addresses the entire range of issues involved in treating FCC flue gas by presenting solutions to each of these problems. Three processes will be described and compared which are effective for FCC flue gas desulfurization: DynaWave® scrubbing with caustic, limestone slurry, or with THIOPAQ™ biological regeneration. Each of these represents a practical, commercialized approach to the problem of FCC flue gas desulfurization. Each process can be an appropriate solution, depending on the requirements of a specific application. In addition, the new BioDeNOx process for NOx removal will be described.