Methods for filtering air for a gas turbine system
AssigneeDonaldson Company, Inc.
InventorsGary R. Gillingham, Mark A. Gogins, Thomas M. Weik
Life of this patent
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Abstract
Methods for cleaning air intake for a gas turbine system include utilizing filter arrangements that include a barrier media, usually pleated, treated with a deposit of fine fibers. The media is particularly advantageous in high operating temperature (140 to 350° F.) and/or high humidity (greater than 50 to 90% RH) environments.
Claims99
A filter structure for filtering air in a gas turbine intake system, the turbine operating at an intake air demand greater than 8000 ft3-min−1, the intake air having an ambient temperature and a humidity of at least 50% RH, the structure comprising, in an air intake of a gas turbine system, at least one filter element, the filter element having a media pack forming a tubular construction defining a open filter interior;
- the open filter interior being a clean air plenum, the media pack including a pleated construction of a media composite, the media composite including a substrate at least partially covered by a layer of fine fibers, the fine fibers comprising a polymeric composition comprising an addition polymer or a condensation polymer other than a copolymer formed from a cyclic lactam and a C6-10 diamine monomer or a C6-10 diacid monomer combined with an additive material.
A method for filtering air in a gas turbine intake system, the turbine operating at an air intake demand of at least 8000 ft3-min−1, the intake air having an ambient temperature and a humidity of at least 50% RH, the method comprising the steps of:
- (a) installing a filter proximate an air intake of a gas turbine system, the filter comprising at least one filter element, the filter element having a media pack forming a tubular construction and construction defining a open filter interior;
- the open filter interior being a clean air plenum, the media pack including a pleated construction of a media composite, the media composite including a substrate at least partially covered by a layer of fine fibers, the fine fibers comprising a polymeric composition comprising an addition polymer or a condensation polymer other than a copolymer formed from a cyclic lactam and a C6-10 diamine monomer or a C6-10 diacid monomer combined with an additive material;
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- (b) directing intake air into an air intake of a gas turbine system.
A method for filtering air in a gas turbine intake system, the method comprising, in a turbine operating at an air intake demand greater than 8000 ft3-min−1, an intake air having an ambient temperature and a humidity of at least 50% RH,
- (a) directing intake air into an air intake of a gas turbine system having at least one filter element, the filter element having a media pack forming a tubular construction and construction defining a open filter interior;
- the open filter interior being a clean air plenum, the media pack including a pleated construction of a media composite, the media composite including a substrate at least partially covered by a layer of fine fibers, the fine fibers comprising a condensation polymer, other than a copolymer formed from a cyclic lactam and a C6-10 diamine monomer or a C6-10 diacid monomer, and a resinous additive comprising an oligomer having a molecular weight of about 500 to 3000 and an aromatic character wherein die additive miscible in the condensation polymer;
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- (b) directing the air through the media pack of the filter element and into the open filter interior to clean the air.
Dependencies are inferred from the claim text.