SLURRY CONTROL SYSTEM

摘要

A system for regulating an amount of fresh lime slurry introduced to a spray dry absorber. The control system includes a controller configured to receive input from a continuous emissions monitoring system (CEMS), a valve in communication with the controller and a spray dry absorber suction pump, the valve adapted to regulate an amount of fresh lime slurry provided to the spray dry absorber suction pump and a valve in communication with the controller and a pre-mix tank, the valve adapted to regulate an amount of fresh lime slurry provided to the pre-mix tank.

主权项

1. A method for controlling an amount of fresh lime slurry supplied to an SDA, the method comprising:
measuring an SOx concentration of a flue gas stream in a flue gas processing system; supplying the SOx concentration to a controller; comparing the measured SOx concentration to an SOx concentration set point; and regulating an amount of fresh lime slurry supplied to a pre-mix tank based on the comparison of the measured SOx concentration to the SOx concentration set point thereby controlling the amount of fresh lime slurry supplied to an SDA.