Modular–scale ethane to liquids via chemical looping oxidative dehydrogenation: Redox catalyst performance and process analysis

Neal, Luke; Haribal, Vasudev; McCaig, Joseph; Lamb, H. Henry; Li, Fanxing

doi:10.1002/amp2.10015

Title: Modular–scale ethane to liquids via chemical looping oxidative dehydrogenation: Redox catalyst performance and process analysis

Journal Article · Fri Mar 29 00:00:00 EDT 2019 · Journal of Advanced Manufacturing and Processing

DOI:https://doi.org/10.1002/amp2.10015· OSTI ID:1642374

Neal, Luke ^[1]; Haribal, Vasudev ^[1]; McCaig, Joseph ^[1]; Lamb, H. Henry ^[1];

^[1]

North Carolina State Univ., Raleigh, NC (United States)

The difficulties in the liquefaction and transportation of ethane in shale gas has led to significant rejection, via reinjection or flaring, of this valuable hydrocarbon resource. Upgrading this low–value, isolated ethane into easily transportable liquid fuels is a promising solution to this supply glut. In this study, we present a modular system that can potentially be operated economically at geographically isolated gas–processing facilities. The modular ethane–to–liquids (M–ETL) system uses a chemical looping–oxidative dehydrogenation (CL–ODH) technology to efficiently convert ethane and natural gas liquids into olefins (primarily ethylene) via cyclic redox reactions of highly effective redox catalyst particles. The resulting olefins are then converted to gasoline and mid–distillate products via oligomerization. CL–ODH eliminates air separation and equilibrium limitations for olefin generation. It also simplifies the process scheme and reduces energy consumption. Here, we present experimental proof–of–concept data on CL–ODH conversion of ethane to ethylene. Using the CL–ODH performance data at 750°C, we show that a simple, single–pass configuration can be economically viable at distributed sites. We identify that economic factors such as the capital cost, price of ethane feed, and value of electricity byproduct have strong effects on the required selling price of the liquids. It is also noted that the economic viability of the M–ETL system is relatively insensitive to the liquid yield under a low ethane price scenario. In conclusion, the demand and value of electricity at distributed locations, on the other hand, can play an important role in the optimal process configuration and economics.

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Research Organization:: RAPID Manufacturing Institute, New York, NY (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office

Grant/Contract Number:: EE0007888; EE007888

OSTI ID:: 1642374

Alternate ID(s):: OSTI ID: 1507445

Journal Information:: Journal of Advanced Manufacturing and Processing, Vol. 1, Issue 1-2; ISSN 2637-403X

Publisher:: American Institute of Chemical Engineers (AIChE), WileyCopyright Statement

Country of Publication:: United States

Language:: English

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