Back to results
US 8,999,040 B2Granted
Method and system for discharging an electrostatic precipitator
AssigneeALSTOM Technology Ltd
InventorAnders Johansson
Life of this patent
Estimating the term…
Abstract
A method for cleansing an electrostatic precipitator having a collecting electrode and an emission electrode includes applying a voltage between the collecting electrode and the emission electrode and reducing the applied voltage from a first voltage to a second voltage upon an occurrence of a spark between the collecting electrode and the emission electrode.
Claims18
A method for cleansing an electrostatic precipitator having a collecting electrode and an emission electrode, the method comprising:
- applying a voltage between the collecting electrode and the emission electrode so that the voltage is at a first voltage level between the collecting electrode and the emission electrode immediately prior to the occurrence of the spark;
- and
- reducing the voltage from the first voltage level to a second voltage level upon an occurrence of a spark between the collecting electrode and the emission electrode, with the second voltage level being less than one tenth of the first voltage level.
A system for cleansing an electrostatic precipitator having a collecting electrode and an emission electrode, the system comprising:
- a spark detector configured to detect occurrence of a spark between the collecting electrode and the emission electrode;
- and
- a voltage reduction controller configured to reduce a voltage between the collecting electrode and the emission electrode from a first voltage level to a second voltage level when the spark detector detects occurrence of the spark so that the first voltage level is the voltage between the collecting electrode and the emission electrode immediately prior to the occurrence of the spark, and upon occurrence of the spark, the voltage reduction controller reduces the voltage from the first voltage level to the second voltage level with the second voltage level being less than one tenth of the first voltage level.
Dependencies are inferred from the claim text.