545697 Analysis and Optimization of Gas to Liquid (GTL) Process Using Unconverted Syngas Recycle

Monday, June 3, 2019: 5:21 PM
Texas Ballroom D (Grand Hyatt San Antonio)
Saiedeh Arabi, Sandeep Patil and Brian Dennis, Mechanical & Aerospace Engineering, The University of Texas at Arlington, Arlington, TX

Gas to Liquid (GTL) process converts chemically natural gas to syngas and could be separated into different hydrocarbon fractions. GTL process comprised of three units: 1) Syngas production 2) Fischer-Tropsch synthesis (FTS) 3) Product separation. Partial oxidation of natural gas, steam methane reformer, and FTS are three main units which are simulated in this study. The developed simulation of auto thermal and Fischer-Tropsch reactors were carried out to get jet fuel from natural gas with different steam flow rates using Aspen HYSYS. The GTL pilot plant data was in reasonable agreement with simulation results. The recycling simulation of unconverted syngas was optimized. In this research, the effect of different conditions of feed stream such as: H2O/CH4, O2/CH4, and feed temperature on molar ratio of H2/CO through the ATR were investigated. In addition, the different temperature and pressure operation conditions of syngas stream on syngas conversion and jet fuel selectivity were analyzed in fixed bed reactor based on cobalt catalyst. The results show that by increasing O2/CH4 and H2O/CH4 ratio the reduction and raising of H2/CO ratio is gained respectively in GTL process. Also, the optimum operation condition of GTL process is 250 deg C.

Extended Abstract: File Not Uploaded
See more of this Session: Processes and Perspectives Rapid Talks
See more of this Group/Topical: General Submissions