System for optimizing air balance and excess air for a combustion process

摘要

A control system for adjusting total air flow or oxygen in flue gas for a fossil fired power generating or steam generating unit, that includes a plurality of sensors that supply data to a tunable controller adapted to sense total air flow and/or oxygen flow; with the sensors also supplying data relating to carbon monoxide (CO) and/or combustibles and/or loss of ignition (LOI) and/or carbon in ash (CIA), and where the tunable controller can set a desired target or target range for at least one of CO, combustibles, CIA, or LOI and adjust the total air flow and/or O2 via direct control or bias signals. The system can respond to discrete events, analog events and/or thresholds.

主权项

1. A control system for adjusting total air flow or oxygen in flue gas for a fossil fired power generating or steam generating unit, comprising:
a plurality of sensors that supply data to a tunable controller adapted to sense total air flow and/or oxygen flow; said plurality of sensors also supplying data relating to carbon monoxide (CO) and/or combustibles and/or loss of ignition (LOI) and/or carbon in ash (CIA); the tunable controller adapted to set a desired target or target range for at least one of CO, combustibles, CIA, or LOI; said tunable controller adapted to adjust the total air flow and/or O2 via direct control or bias signals.