Electrode for electrostatic precipitator gas scrubbing apparatus

An apparatus for treating gas, comprising an electrostatic precipitator section having:

• a casing having an upper end and a lower end;
• a gas inlet for receiving gas located toward the lower end of the casing;
• a gas outlet for exhausting gas located near the upper end of the casing;
• a first electrode including a generally tubular conductive portion;
• a second electrode, comprising
• a rod-shaped conductive central portion located along a longitudinal central axis of the first electrode and having a top end and a bottom end, and
• a plurality of conductive disc-shaped elements, each disc-shaped element having sharp points spaced around a circumference of the disc-shaped element and a plurality of openings near a center of the disc-shaped element, the central portion of the second electrode passing through the centers of the plurality of disc-shaped elements such that the disc-shaped elements are located parallel to one another along the central portion of the second electrode, and wherein the sharp points of the disc-shaped elements are raised toward the top end of the central portion of the second electrode from the centers of the plurality of disc-shaped elements by at least 0.05 inches for each inch of radius of the disc-shaped elements;
• a power supply having a positive terminal connected to the first electrode and a negative terminal connected to the second electrode;
• a liquid inlet located toward the upper end of the casing for receiving a water spray;
• and
• a liquid outlet located toward the lower end of the casing.

An apparatus for treating gas, comprising an electrostatic precipitator section having:

• a casing having an upper end and a lower end;
• a gas inlet for receiving gas located toward the lower end of the casing;
• a gas outlet for exhausting gas located near the upper end of the casing;
• a first electrode including a generally tubular conductive portion;
• a second electrode, comprising
• a rod-shaped conductive central portion located along a longitudinal central axis of the first electrode and having a top end and a bottom end, and
• a plurality of conductive disc-shaped elements, each disc-shaped element having sharp points spaced around a circumference of the disc-shaped element and a plurality of openings near a center of the disc-shaped element, the central portion of the second electrode passing through the centers of the plurality of disc-shaped elements such that the disc-shaped elements are located parallel to one another along the central portion of the second electrode;
• a power supply having a positive terminal connected to the first electrode and a negative terminal connected to the second electrode;
• a liquid inlet located toward the upper end of the casing for receiving a water spray;
• a liquid outlet located toward the lower end of the casing;
• and
• a packed column scrubber section positioned within the casing and concentric to the electrostatic precipitator section, the packed column scrubber section having a first inlet located near the top of the casing for receiving gas from the outlet of the electrostatic precipitator section and a second inlet for receiving water.

An apparatus for treating gas, comprising an electrostatic precipitator section having:

• a casing having an upper end and a lower end;
• a gas inlet for receiving gas located toward the lower end of the casing;
• a gas outlet for exhausting gas located near the upper end of the casing;
• a first electrode including a generally tubular conductive portion;
• a second electrode, comprising
• a rod-shaped conductive central portion located along a longitudinal central axis of the first electrode and having a top end and a bottom end, and
• a plurality of conductive disc-shaped elements, each disc-shaped element having sharp points spaced around a circumference of the disc-shaped element and a plurality of openings near a center of the disc-shaped element, the central portion of the second electrode passing through the centers of the plurality of disc-shaped elements such that the disc-shaped elements are located parallel to one another along the central portion of the second electrode;
• a power supply having a positive terminal connected to the first electrode and a negative terminal connected to the second electrode;
• a liquid inlet located toward the upper end of the casing for receiving a water spray;
• a liquid outlet located toward the lower end of the casing;
• a second liquid inlet;
• and
• a conduit configured to receive liquid from the second liquid inlet and direct the liquid onto the central portion of the second electrode.

An apparatus for treating gas, comprising an electrostatic precipitator section having:

• a casing having an upper end and a lower end;
• a gas inlet for receiving gas located toward the lower end of the casing;
• a gas outlet for exhausting gas located near the upper end of the casing;
• a first electrode including a generally tubular conductive portion;
• a second electrode, comprising
• a rod-shaped conductive central portion located along a longitudinal central axis of the first electrode and having a top end and a bottom end, and
• a plurality of conductive disc-shaped elements, each disc-shaped element having sharp points spaced around a circumference of the disc-shaped element and a plurality of openings near a center of the disc-shaped element, the central portion of the second electrode passing through the centers of the plurality of disc-shaped elements such that the disc-shaped elements are located parallel to one another along the central portion of the second electrode;
• a power supply having a positive terminal connected to the first electrode and a negative terminal connected to the second electrode;
• a liquid inlet located toward the upper end of the casing for receiving a water spray;
• a liquid outlet located toward the lower end of the casing;
• a second liquid inlet;
• and
• a conduit configured to receive liquid from the second liquid inlet and having a plurality of outlet holes configured to direct the liquid onto each of the plurality of disc shaped elements.