Methods and systems for removing pollutants from fluid stream

A power generation system comprising:

• a furnace configured to combust fuel and to generate a stream of flue gas from the combusted fuel;
• a particulate control device coupled in flow communication with said furnace and configured to remove particulates from the flue gas stream, said particulate control device cleaned on a predetermined cleaning cycle;
• and
• a sorbent control system for controllably injecting a sorbent into the flue gas stream upstream of said particulate control device, said sorbent control system configured to adjust a sorbent injection rate as a function of the cleaning cycle.

A method for removing pollutants from a flue gas stream, said method comprising:

• receiving a flue gas stream including a plurality of pollutants entrained therein;
• channeling the flue gas stream through at least one filter;
• executing a cleaning cycle to remove particulates from the filter;
• and
• controllably injecting sorbent into the flue gas stream such that the sorbent is at least partially retained by the filter, wherein a sorbent injection rate is as a function of the cleaning cycle.