Abstract
A conceptual optimal design for the production of dimethyl ether (DME) and/or power from switchgrass is proposed. A superstructure is formulated embedding two different gasification technologies, direct and indirect, two reforming modes, partial oxidation or steam reforming, gas cleaning, and composition adjustment. Next, DME is produced following direct synthesis, a novel one-step technology. The unreacted gas can be either recycled or used within a Brayton cycle for the simultaneous production of DME and power. The problem is formulated as a mixed integer nonlinear programming problem. The optimal topology involves indirect gasification followed by steam reforming. DME production is favored over power for current electricity prices. Thus, the investment cost for the production of 197 kt/yr of DME adds up to $133 million, at a price of $0.31/kg.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
