Apparatus for filtering gas turbine inlet air

US8038776B2 · kind B2 · utility

Assignee

• BHA Group, Inc. · US

Inventors

• Jamison W. Janawitz · Overland Park, US
• Bradley S. Rogers · Leawood, US
• James Easel Roberts · Kansas City, US
• Thomas Shannon Eckhoff · Kansas City, US
• Robert Warren Taylor · Cohuna, AU

Key dates

• Filing date: Mar 23, 2010
• Grant date: Oct 18, 2011
• Expiry date: Mar 23, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2260/607
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An inlet air filtration system for a gas turbine includes, in an exemplary embodiment, an air plenum, and a plurality of filter elements mounted inside the air plenum, with each filter element including a support structure. The inlet air filtration system also includes a plurality of electrodes positioned proximate the plurality of filter elements, where the electrodes are coupled to a power source which supplies a voltage to the electrodes. The voltage is sufficient to establish an electrostatic field between the electrodes and the filter elements, and is sufficient to produce a corona discharge from the electrodes, wherein an amount of current applied to the filter elements is about 0.1 μA/ft2 to about 15 μA/ft2.