Systems and methods for addition of fuel additives to control turbine corrosion

Abstract

A gas turbine engine system includes a compressor, gas turbine, and combustor including a plurality of late lean fuel injectors supplied with secondary fuel to its interior. The gas turbine engine system includes a wash system in communication with the late lean fuel injectors. The wash system includes a water source; water pump; anti-corrosion agent fluid source with an anti-corrosion agent including a amine corrosion inhibitor; anti-corrosion agent supply piping in fluid communication with the anti-corrosion agent fluid source; mixing chamber receiving water and anti-corrosion agent to produce an anti-corrosion mixture in fluid communication with the mixing chamber and the plurality of late lean fuel injectors. Fluid from the mixing chamber including the water, the anti-corrosion agent fluid source, or a mixture thereof is injected, while the gas turbine engine is off-line, into the combustor and at least one of the plurality of late lean fuel injectors.

What is claimed is: 
     
         1 . A gas turbine engine system comprising:
 a gas turbine engine, the gas turbine engine including a compressor, a combustor, a gas turbine, the combustor including a plurality of late lean fuel injectors supplied with secondary fuel to an interior of the combustor;   a wash system configured to be attached to and in fluid communication with the plurality of late lean fuel injectors of the combustor, the wash system including:   a water source supplying water;   a water pump configured to pump water;   an anti-corrosion agent fluid source supplying a supply of an anti-corrosion agent fluid including a amine corrosion inhibitor;   anti-corrosion agent fluid supply piping, the anti-corrosion agent fluid supply piping being in fluid communication with the anti-corrosion agent fluid source;   a first fluid pump configured to pump the anti-corrosion agent fluid to the mixing chamber;   a mixing chamber in communication with the water source and the anti-corrosion agent fluid source; the mixing chamber being in fluid communication with the water supply piping and the anti-corrosion agent fluid supply piping, the mixing chamber being configured to receive water from the water supply piping and the anti-corrosion agent fluid from the anti-corrosion agent fluid supply piping to produce an anti-corrosion mixture, the anti-corrosion mixture including a mixture of the amine corrosion inhibitor and water;   a fluid line configured to be in fluid communication with the mixing chamber and at least one of the plurality of late lean fuel injectors such that a fluid from the mixing chamber including the water, amine corrosion inhibitor, or an mixture of amine corrosion inhibitor and water thereof is injected into the combustor and at least one of the plurality of late lean fuel injectors, wherein the mixture is injected while the gas turbine engine is off-line.   
     
     
         2 . The gas turbine engine system of  claim 1 , wherein the amine corrosion inhibitor includes an organic compound. 
     
     
         3 . The gas turbine engine system of  claim 2 , wherein the amine corrosion inhibitor includes two or more primary amino groups, NH 2 . 
     
     
         4 . The gas turbine engine system of  claim 2 , wherein the amine corrosion inhibitor includes a volatile neutralizing amine, the volatile neutralizing amine configured to neutralize acidic contaminants and elevate pH of the mixture into an alkaline range, wherein the mixture of amine corrosion inhibitor and water is configured to provide protective metal oxide coatings on internal components of the gas turbine. 
     
     
         5 . The gas turbine engine system of  claim 2 , wherein the amine corrosion inhibitor includes at least one of cycloheaxylamine, morpholine, monoethanolamine, N-9-Octadecenyl-1,3-propanediamine, 9-octadecen-1-amine, (Z)-1-5, dimethylaminepropylamine (DMPA), diethylaminoethanol (DEAE), and combinations thereof. 
     
     
         6 . The gas turbine engine system of  claim 2 , wherein the amine corrosion inhibitor includes an amount in the mixture in a range from about 50 ppm to about 800 ppm. 
     
     
         7 . The gas turbine engine system of  claim 2 , wherein the amine corrosion inhibitor includes an amount in the mixture in a range from about 100 ppm to about 500 ppm. 
     
     
         8 . The gas turbine engine system of  claim 1 , wherein the mixing chamber includes one or more angled counter flow nozzles therein, the one or more angled counter flow nozzles extending into the mixing chamber at an angle with respect to a central axis of the mixing chamber and configured to inject the amine corrosion inhibitor at the angle in a direction counter to a flow of the water in the mixing chamber. 
     
     
         9 . The gas turbine engine system of  claim 1 , further including a controller, the controller being in operative communication with the water pump, the first pump, and the fluid line, wherein the controller is configured to regulate a flow of the mixture of water and the amine corrosion inhibitor through the fluid line to at least one of the plurality of late lean fuel injectors. 
     
     
         10 . The gas turbine engine system of  claim 9 , wherein the controller further includes at least one flow control valve positioned in fluid line, the at least one flow control valve in communication with the controller for enabling actuation of the at least one flow control valve between at least open and closed positions, the actuation caused by the controller. 
     
     
         11 . The gas turbine engine system of  claim 8 , wherein the controller further includes at least one flow sensor positioned in fluid line, the at least one flow sensor in communication with the controller for sensing flow in the fluid line. 
     
     
         12 . A gas turbine engine system comprising:
 a gas turbine engine, the gas turbine engine including a compressor, a combustor, a gas turbine, and multiple premixing nozzles, the combustor including a plurality of late lean fuel injectors supplied with secondary fuel to an interior of the combustor and disposed downstream from the premixing nozzles;   a wash system configured to be attached to and in fluid communication with the plurality of late lean fuel injectors of the combustor, the wash system including:   a water source supplying water;   a water pump configured to pump water;   an anti-corrosion agent fluid source supplying a supply of an anti-corrosion agent fluid including a amine corrosion inhibitor;   anti-corrosion agent fluid supply piping, the anti-corrosion agent fluid supply piping being in fluid communication with the anti-corrosion agent fluid source;   a first fluid pump configured to pump the anti-corrosion agent fluid to the mixing chamber;   a mixing chamber in communication with the water source and the anti-corrosion agent fluid source; the mixing chamber being in fluid communication with water supply piping and the anti-corrosion agent fluid supply piping, the mixing chamber being configured to receive water from the water supply piping and the anti-corrosion agent fluid from the anti-corrosion agent fluid supply piping to produce an anti-corrosion mixture, the anti-corrosion mixture including a mixture of the amine corrosion inhibitor and water;   a fluid line configured to be in fluid communication with the mixing chamber and at least one of the plurality of late lean fuel injectors such that a fluid from the mixing chamber including the water, amine corrosion inhibitor, or an mixture of amine corrosion inhibitor and water thereof is injected into the combustor and at least one of the plurality of late lean fuel injectors, bypassing the multiple premixing nozzles, wherein the mixture is injected while the gas turbine engine is off-line.   
     
     
         13 . The gas turbine engine system of  claim 12 , wherein the amine corrosion inhibitor includes an organic compound. 
     
     
         14 . The gas turbine engine system of  claim 13 , wherein the amine corrosion inhibitor includes two or more primary amino groups, NH 2 . 
     
     
         15 . The gas turbine engine system of  claim 13 , wherein the amine corrosion inhibitor includes a volatile neutralizing amine, the volatile neutralizing amine configured to neutralize acidic contaminants and elevate pH of the mixture into an alkaline range, wherein the mixture of amine corrosion inhibitor and water is configured to provide protective metal oxide coatings on internal components of the gas turbine. 
     
     
         16 . The gas turbine engine system of  claim 13 , wherein the amine corrosion inhibitor includes at least one of cycloheaxylamine, morpholine, monoethanolamine, N-9-Octadecenyl-1,3-propanediamine, 9-octadecen-1-amine, (Z)-1-5, dimethylaminepropylamine (DMPA), diethylaminoethanol (DEAE), and combinations thereof. 
     
     
         17 . The gas turbine engine system of  claim 13 , wherein the amine corrosion inhibitor includes an amount in the mixture selected from a range from about 50 ppm to about 800 ppm and from about 100 ppm to about 500 ppm. 
     
     
         18 . The gas turbine engine system of  claim 12 , wherein the mixing chamber includes one or more angled counter flow nozzles therein, the one or more angled counter flow nozzles extending into the mixing chamber at an angle with respect to a central axis of the mixing chamber. 
     
     
         19 . The gas turbine engine system of  claim 12 , further including a controller, the controller being in operative communication with the water pump, the first pump, and the fluid line, wherein the controller is configured to regulate a flow of the mixture of water and the amine corrosion inhibitor through a fluid line to at least one of the plurality of late lean fuel injectors. 
     
     
         20 . The gas turbine engine system of  claim 19 , wherein the controller further includes:
 at least one flow control valve positioned in fluid line, the at least one flow control valve in communication with the controller for enabling actuation of the at least one flow control valve between at least open and closed positions, the actuation caused by the controller; and   at least one flow sensor positioned in fluid line, the at least one flow sensor in communication with the controller for sensing flow in the fluid line.