Flue gas conditioning agent demand control apparatus
AssigneeWilhelm Environmental Technologies, Inc.
InventorRobert A. Wright
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Abstract
The present invention relates to a flue gas conditioning agent demand control apparatus for controlling a flow of conditioning agent for removal of entrained particles in a flue gas with an electrostatic precipitator having at least one charging electrode and at least one collecting electrode through the use of a signal determined from a rate of discharge of a charged electrode of the electrostatic precipitator.
Claims26
A flue gas conditioning agent demand control apparatus for controlling flow of a conditioning agent for removal of entrained particles in a flue gas with an electrostatic precipitator having at least one charging electrode and at least one collection electrode, comprising:
- first means for sensing a discharge rate of said charging electrode and for generating a conditioning agent demand signal related to said discharge rate of said charging electrode;
- and
- second means for producing a flow of conditioning agent connected with said conditioning agent demand signal, said second means providing a controlled flow of conditioning agent in relation to changes in said conditioning agent demand signal from said first means.
A flue gas treatment system, comprising:
- an electrostatic precipitator for removing particulate matter from flue gas and including at least one charged electrode and one grounded electrode;
- a conditioning agent system for supplying a flow of conditioning agent to the flue gas to condition particulate matter in the flue gas for removal by the electrostatic precipitator;
- signal means for monitoring a rate of discharge of the charged electrode of the electrostatic precipitator and providing therefrom a conditioning agent demand signal;
- control means for said conditioning agent supply system, connected with said conditioning agent demand signal and for providing an operating signal for said conditioning agent supply system to provide a flow of conditioning agent to the flue gas in response to the conditioning agent demand signal.
In method for supplying a flow of conditioning agent for removal of entrained particles with an electrostatic precipitator having at least one charged electrode and at least one collection electrode, the improvement comprising the steps of:
- determining a rate of discharge of said charged electrode;
- and
- generating a signal from said discharge rate of said charged electrode for controlling a flow of conditioning agent and providing said flow of conditioning agent in response to said signal to maintain removal of entrained particle within acceptable limits.
In an apparatus for controlling the flow of conditioning agent to a flue gas system for removal of the entrained particles by the electrodes of an electrostatic precipitator, the improvement comprising means for sensing a voltage decay rate of at least one electrode of the electrostatic precipitator and means for generating a signal for use in determining conditioning agent demand from said sensed voltage decay rate.
Dependencies are inferred from the claim text.