Modeling Analysis of Shell, Texaco Gasification Technology’s Effects on Water Gas Shift for Fischer-Tropsch Process

Abstract:

This work analyzes different gasification processes affect on WGS process with Excel-Aspen Plus based models.in large scale production. Results show that Shell gasifier can obtain higher (CO + H₂)/syngas ratio and higher thermal efficiency but lower H₂/CO ratio than Texaco gasifier. However, both of H₂/CO ratios are below 1.0 and WGS reaction has to carry out to prepare for the Fischer-Tropsch synthesis. The simulation shows Shell syngas does not offer adequate H₂O molecules for WGS shift reaction and it can be supplied by the 5.2MPa steam generated from the boiler of the Shell gasification process. Texaco syngas has sufficient H₂O molecules to meet the need of this reaction. The overall thermal efficiency of the Texaco-WGS is lower than that of the Shell-WGS.

• Periodical: Advanced Materials Research (Volumes 608-609)
• Pages: 1446-1453
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.608-609.1446
• Online since: December 2012
• Authors: Ge Wen Yu, Yan Ming Wang, Yuan Yuan Xu
• Keywords: Gasification, Syngas, Thermal Efficiency, Water-Gas Shift

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