With the development of chemical absorbers,biphasic absorbers have the potential for absorption performance and energy consumption.In this work,a new biphasic absorber composed of tetraethylene pentamine(TEPA)and Diet...With the development of chemical absorbers,biphasic absorbers have the potential for absorption performance and energy consumption.In this work,a new biphasic absorber composed of tetraethylene pentamine(TEPA)and Diethyl ethanolamine(DEEA)is formed to capture CO_(2).The appropriate stratification boundaries by experimentation are found for orthogonal experiment.The optimum capture CO_(2)conditions are obtained according to the orthogonal design.The ranking of factors affecting the ability and rate to absorb CO_(2)is C(waste flow rate)>A(mass ratio)>B(reaction temperature).The desorption efficiency of the new biphasic absorber reaches 96.66%at 140C.The new biphasic absorber has good recyclability and its energy consumption is 2.23 GJ·t^(-1)CO_(2).Through viscosity experiment,reaction products analyzed by 13C NMR date,functional groups and chemical bonds analyzed by FT-IR date analysis,the mechanisms of CO_(2)absorption and phase transition follow a zwitterionic mechanism.This is a biphasic amine that deserves in-depth study.展开更多
基金The authors would appreciate the financial support provided by Special Fund Project for Central Guidance of Local Scientific and Technological Development through the Grant ZYYD2022C16Major Science and Technology Projects of Xinjiang Uygur Autonomous Region through the Grant 2023A01005-2Natural Science Foundation of Xinjiang Uygur Autonomous Region through the Grant 2022D01C87.
文摘With the development of chemical absorbers,biphasic absorbers have the potential for absorption performance and energy consumption.In this work,a new biphasic absorber composed of tetraethylene pentamine(TEPA)and Diethyl ethanolamine(DEEA)is formed to capture CO_(2).The appropriate stratification boundaries by experimentation are found for orthogonal experiment.The optimum capture CO_(2)conditions are obtained according to the orthogonal design.The ranking of factors affecting the ability and rate to absorb CO_(2)is C(waste flow rate)>A(mass ratio)>B(reaction temperature).The desorption efficiency of the new biphasic absorber reaches 96.66%at 140C.The new biphasic absorber has good recyclability and its energy consumption is 2.23 GJ·t^(-1)CO_(2).Through viscosity experiment,reaction products analyzed by 13C NMR date,functional groups and chemical bonds analyzed by FT-IR date analysis,the mechanisms of CO_(2)absorption and phase transition follow a zwitterionic mechanism.This is a biphasic amine that deserves in-depth study.
