Hybridizing power and water cogeneration plants with biomass steam gasification systems: An Energy-Water-Waste (EW2) nexus case study

摘要: Abstract Due to their fast start-up, diesel-fired gas turbine (GT) backup units are commonly used in Kuwait satisfy increasing local power demand utility-scale cogeneration and water desalination plants (CPDP). This study investigates the use of syngas generated from biomass high-temperature steam gasification (HTSG) systems as fuel for GT instead units. The objective hybridizing CPDPs with HTSG is minimize fossil dependence simultaneously reduce waste discarded landfills. coupling carbon–neutral system retrofits existing sustainable Energy-Water-Waste (EW2) systems. Synergies conventional presented discussed this study. A thermodynamic analysis performed on hybrid plant simultaneous generation by cofiring municipal solid (MSW), plastic, rubber tires fuels. Depending gasifier’s feedstock at optimal steam-to-biomass ratio ( STBR ) temperature, peak capacity enhancement calculated be range 3.40% 4.52% when integrating a 100 MW syngas-fired unit CPDP. results energy show that plant’s utilization factor ranges 70.0% 74.4%. largest increase (2.52%) gain PWGR achieved gasified 800 °C an 3.82. Even though in-house consumption rate increases 10.8 55.0% because coupling, maximum net desalinated export decreases 0.233% only optimum operating parameters. Approximately 1.69 million kgs landfilling can potentially avoided daily such representing 25.5% Kuwait’s total MSW production per day.