ENV-07-123 Design, Operation and Performance of A Wet Scrubbing System for the Removal of Particulate, SOx and NOx from FCCU Regenerator Flue Gas- A Case History

Description:

There is a long history of utilizing wet scrubbing systems for controlling particulate and SOx emissions from FCCU regenerator flue gas. However, NOx control has historically been achieved with a technology that is separate from the wet scrubbing system. These technologies include catalyst additives, selective non catalytic reduction (SNCR) and selective catalytic reduction (SCR). The wet scrubbing system described in this paper utilizes LoTOxTM, a technology that is incorporated into the wet scrubbing system for the control of NOx emissions. The design of the wet scrubbing system, including the components used for the control of particulate, SOx and NOx are described in detail along with the specifics for the installation that is being described. Also included are important design considerations for this type of wet scrubbing system. The operation of this system is then reviewed, along with specific performance information and operating details. Finally, the economics of this approach for controlling NOx emissions is reviewed and discussed, along with any specific issues that would be helpful to refiners looking to make decisions for the control of NOx emissions from their refinery.