(326d) Techno-Economic Analysis of Direct Methane Aromatization for Natural Gas Upgrading at Isolated Sites
AIChE Annual Meeting
Friday, November 20, 2020 - 8:45am to 9:00am
Previous economic studies of DMA have been reported which either invoke unrealistic assumptions in the process model,2, 3 do not consider use of the gaseous hydrogen,2, 3 or do not consider the limitations imposed on the process due to remote deployment.4 With these issues in mind, a DMA mini-plant processing 1.0 MMSCFD of natural gas was designed with currently available technology to provide a platform for the investigation of process intensified alternatives. The reactor section of the plant uses a pre-carburized DMA catalyst developed at Texas Tech.5 The unit was investigated for economic feasibility and sustainability. In particular, the analysis identifies four particular areas which can benefit from intensification: aromatics yield (i.e. one-pass conversion), coke selectivity, hydrogen recovery, and separation and purification of the aromatic products. Although intensified reactor technology for the DMA process is already being investigated for improving the yield with6, 7 and without integrated hydrogen recovery8, 9, the process model framework should provide opportunities for investigating additional intensification technologies, particularly in separations.
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