| Patent application number | Description | Published |
|---|
| 20100107662 | Reduction of Diluent Nitrogen Compressor Power Using Vapor Absorption Chiller - A diluent nitrogen compressor inlet cooling system comprises a bottoming cycle heat source; a vapor absorption chiller powered by the bottoming cycle heat source, the vapor absorption chiller being configured to cool diluent nitrogen; and a diluent nitrogen compressor that receives the cooled diluent nitrogen from the vapor absorption chiller. A method for cooling an inlet of a diluent nitrogen compressor comprises powering a vapor absorption chiller using a bottoming cycle heat source from the integrated gasification combined cycle system; indirectly cooling diluent nitrogen by the vapor absorption chiller; and sending the cooled diluent nitrogen to a diluent nitrogen compressor inlet. | 05-06-2010 |
| 20100199683 | OPTIMIZATION OF LOW-BTU FUEL-FIRED COMBINED-CYCLE POWER PLANT BY PERFORMANCE HEATING - Disclosed is an optimized approach of using bleed-off of compressed air flow from a gas turbine compressor in a combined-cycle power plant and performance heating to augment plant performance. In one embodiment, a diverted portion of a by-product off gas and the bleed-off of compressed air flow are fired heated to produce a high temperature flue gas that is used to performance heat a pressurized mixture of fuel prior to being supplied to the gas turbine combustor. | 08-12-2010 |
| 20100205967 | PRE-HEATING GAS TURBINE INLET AIR USING AN EXTERNAL FIRED HEATER AND REDUCING OVERBOARD BLEED IN LOW-BTU APPLICATIONS - In certain embodiments, a system includes an air heating system. The air heating system is configured to heat air with waste heat generated by a waste heat source external to a turbine engine. The air heating system is also configured to deliver the heated air to a compressor of the turbine engine. | 08-19-2010 |
| 20100242489 | Systems, Methods, and Apparatus for Modifying Power Output and Efficiency of a Combined Cycle Power Plant - Embodiments of the invention can provide systems, methods, and an apparatus for modifying the power output and efficiency of a combined cycle power plant. According to one embodiment where a combined cycle power plant includes a compressor, a gas turbine, a combustor, and a heat recovery steam generator, excess air from the compressor can be extracted and expanded to generate power. The expanded air can then be mixed with at least one combustible fuel to generate a heated combustion product. The heated combustion product can be mixed with exhaust gas from the gas turbine to increase the temperature of the exhaust gas prior to introduction to the heat recovery steam generator. This increase in temperature of the exhaust gas from the gas turbine provides additional energy for generating steam and power and improves performance of the heat recovery steam generator. | 09-30-2010 |
| 20100275648 | EFFICIENTLY COMPRESSING NITROGEN IN A COMBINED CYCLE POWER PLANT - A system and method for reduction of diluent gaseous nitrogen (DGAN) compressor power in combined cycle power plant. A vapor absorption chiller (VAC) may be utilized to generate and transmit cooled fluid, such as water, to one or more heat exchangers located upstream and/or downstream of at least one compressor of the DGAN compressor system. Utilization of these heat exchangers may cool the temperature of the nitrogen, which may allow for less energy to be expended by the DGAN in compression of the nitrogen. | 11-04-2010 |
