(92c) Process Simulation Study of Sour Gas Sweetening Technologies for Distributed Resources
In this talk, three desulfurization processes are selected (LOCAT, SourCat and scavenger) and simulated at different conditions. Then, an economic analysis tool (ECON) is used to calculate capital and operating cost. Comparing with real data ($250-1000 per ST range, LOCAT) [3, 4], we will show that our simulation results are representative of the real cases. Based on this, we can calculate the desulfurization cost for each process at different conditions. According to preliminary results, the SourCat process will offer approximately a 53% savings per MSCF compared to the LOCAT desulfurization cost at 100 MSCFD and 500 ppm H2S. Finally, a desulfurization cost plot is generated to provide guidance with respect to the preferred operating conditions of these three processes. Furthermore, based on different scales, a comparison of Aspen Economic Analyzer and ECON is performed to verify that ECON shows preference for small scale plants and Aspen Economic Analyzer prefers large scale systems. Finally, a process synthesis and intensification framework is considered by combining these processes, which has the potential to operate at larger scale with lower desulfurization cost.
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 William Echt, âLiquid Redox Processesâ, Laurance Reid Gas Conditioning Conference: Fundamentals of Low-tonnage Sulfur Removal and Recovery, Norman, Oklahoma, February 2017.
 Bob Veroba, P. Eng., Erik Stewart, âFundamentals of Gas Treatingâ, Laurance Reid Gas Conditioning Conference, Norman, Oklahoma, February 2003.