PARTIAL OXIDATION GAS-TURBINE BASED TURBO-POx SYNGAS GENERATION TECHNOLOGY FOR GTL APPLICATIONS

摘要

With financial assistance from the Advanced Research Projects Agency - Energy (ARPA-E) U.S. Department of Energy, Aerojet Rocketdyne Energy Systems Inc. (AR) and Gas Technology Institute (GTI) are collaborating in developing a novel non-catalytic, partial-oxidation based, syngas generation technology called Turbo-POx for Gas-to-Liquids (GTL) and other industrial applications. AR is a leader in high energy density propulsion and power systems with over five decades of combustion and high-pressure turbine development experience. GTI is a not-for-profit R&D organization with over seven decades of experience in energy conversion and monetization of natural resources including natural gas, biomass and coal. The Turbo-POx technology is based on GTI's patented Partial Oxidation Gas Turbine (POGT) concept in which hot synthesis gas from AR's non-catalytic POx gasifier is rapidly cooled in a close-coupled turbo-expander instead of in a conventional waste-heat boiler (WHB). Thus, a considerable portion of the sensible waste heat in the hot synthesis gas is recovered as electrical power and high-pressure steam, thereby resulting in significant capital cost savings compared to a conventional WHB-based synthesis gas cooling process. The AR-POx unit is capable of operating at about 1,500 psia and 2,400 °F outlet conditions using a relatively low steam/carbon molar ratio (typically, -0.2). The AR turboexpander would be cooled by the POx gasifier's reactants via a patented regenerative (regen) cooling concept for improved thermal efficiency and for enhanced service life of expander blades. For the integrated AR-POx/expander commercial operation for a nominal 1,000 barrels/day GTL plant, a typical AR turbo-expander system is projected to deliver an electrical power output of about 6 MWe. Key applications of the POGT/Turbo-POx technology would include GTL and polygeneration of electricity and chemicals.