551467 Innovative Processes Design for Value-Added Products from Natural Gas Liquids in Shale Gas

Wednesday, June 5, 2019: 1:30 PM
Republic ABC (Grand Hyatt San Antonio)
Yiru Li1, Zewei Chen1, Wasiu P. Oladipupo2, Edwin Andres Rodriguez Gil1, Jeffrey J. Siirola2, Fabio Ribeiro3 and Rakesh Agrawal1, (1)Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, (2)Charles D. Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, (3)Purdue University, W LAFAYETTE, IN

Recent advances in hydraulic fracturing and horizontal drilling have led to a surge in shale resource production and transformed the US energy landscape. Compared to natural gas, shale resources contain a substantial amount of condensate and natural gas liquids (NGLs). Many shale basin regions located in remote areas are lacking the infrastructure to distribute the extracted NGLs to other regions—particularly the Gulf Coast, a major gas processing region. A new shale gas valorization process that involves catalytic dehydrogenation followed by catalytic oligomerization has been synthesized. This process of converting natural gas liquids (NGLs) in shale gas into higher molecular weight hydrocarbon has been estimated to be energy-efficient and economically viable[1].

However, due to the highly endothermic and equilibrium limited nature of light alkane dehydrogenation, especially ethane, which is the richest component in NGLs, the process is subjected to challenges such as large recycle ratio, difficulty in reactor heat supply, etc. Here we develop various innovative NGLs upgrading processes to produce value-added products. Processes with new separation, recycle and heat supply strategies are synthesized, designed and simulated. The purpose of the process generation has transformed from designing energy-efficient flowsheet configuration to proposing easy-to-modularize plants considering the locations of remote shale basins.

Reference:

[1] Taufik Ridha, Yiru Li, Emre Gençer, Jeffrey Siirola, Jeffrey Miller, Fabio Ribeiro, and Rakesh Agrawal. Valorization of Shale Gas Condensate to Liquid Hydrocarbons through Catalytic Dehydrogenation and Oligomerization. Processes 6, no. 9 (2018): 139.


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