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Missouri University of Science and Technology

2021

Dimethyl ether

Articles 1 - 2 of 2

Full-Text Articles in Engineering

A Conceptual Efficient Design Of Energy Recovery Systems Using A New Energy-Area Key Parameter, Ibrahim H. Alhajri, Mamdouh A. Gadalla, Hany A. Elazab Nov 2021

A Conceptual Efficient Design Of Energy Recovery Systems Using A New Energy-Area Key Parameter, Ibrahim H. Alhajri, Mamdouh A. Gadalla, Hany A. Elazab

Chemical and Biochemical Engineering Faculty Research & Creative Works

Energy integration in petrochemical and refining industries is an effective concept to minimize dependence on heating and cooling utilities through networks of exchanger equipment. Pinch Analysis is very popular and successful technique to optimize heat recovery between heat sources and sinks. Yet, design of networks of exchangers is challenging and requires careful attention to energy consumption and exchanger areas. This work presents a graphical methodology to design exchanger networks taking into account both heat loads and transfer areas of exchanger units in one single information. A new parameter is introduced for design that is the ratio between the heat load …


Catalytic Carbon Dioxide Hydrogenation To Methanol/Dimethyl Ether Over Copper-Based Catalysts, Xiao Fan Jan 2021

Catalytic Carbon Dioxide Hydrogenation To Methanol/Dimethyl Ether Over Copper-Based Catalysts, Xiao Fan

Doctoral Dissertations

Direct synthesis of dimethyl ether (DME) via CO2 hydrogenation has received great attention, owing to the global warming caused by CO2 emission and increasing energy demand worldwide. In this works, three major aspects of bifunctional catalysts development were studied: (1) investigation of the roles of interaction in the CuO-ZnO-ZrO2-Al2O3/HZSM-5 bifunctional catalysts, (2) deactivation and regeneration of CuO-ZnO-ZrO2-Al2O3 with different zeolitic catalysts for one-step CO2 hydrogenation to dimethyl ether, and (3) study on the enhancement of activity and stability of CZZA/HZSM-5 bifunctional catalysts via the introduction of …