مشخصات پژوهش

عنوان	Supercritical CO2 utilization in a CO2 zero emission novel system for bio-synthetic natural gas, power and freshwater productions
نوع پژوهش	مقاله چاپ‌شده در مجله
کلیدواژه‌ها	Supercritical CO2, Bio-synthetic natural gas, Freshwater, Zero emission, Multi objective optimization
چکیده	Supercritical CO2 utilization is of interest because its supercritical conditions are easily accessible. Supercritical CO2 was utilized in this study in a Brayton cycle driven by a biomass gasification for power production and preheating a humidification-dehumidification desalination system. Biomass gasification triggered a methanation reactor for production of a bio-synthetic natural gas which is a synthetic natural gas obtained from a biomass resource. This technology has a promising performance because it approximately does not have carbon dioxide emission and producing bio-synthetic natural gas from a biomass gasification using a methanation reactor is a carbon dioxide negative technology. Response surface methodology has been utilized for comprehensive investigation and multi-objective optimization of the novel tri-generation system considering power production, freshwater flow rate, and methane content in bio-synthetic natural gas as criteria and selecting biomass feed rate, steam to biomass ratio and pressure ratio of supercritical carbon dioxide Brayton cycle as variable parameters. What stands out in results of analysis of variance is the dominance of biomass feed rate in shares on outputs. Biomass feed rate of 1.2 mol/s, steam to biomass ratio of 1.5 and pressure ratio of 3.5 resulted in the optimum response variables of power production of 172.6 kW, freshwater flow rate of 778.8 kg/hr, and methane content of 50.8% in bio-synthetic natural gas.
پژوهشگران	عطا چیت ساز (نفر اول)، شهرام خلیل آریا (نفر دوم)، پریسا مجاور (نفر سوم)