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A Simulation Study of the Effect of CO2 Injection on the Performance of the GTL Process
Computers & Chemical Engineering ( IF 3.9 ) Pub Date : 2020-02-05 , DOI: 10.1016/j.compchemeng.2020.106768
Ali Attiq Al-Yaeeshi , Ahmed AlNouss , Gordon McKay , Tareq Al-Ansari

This study enhances the efficiency of the Fischer-Tropsch process through CO2 injection. Syngas production in the reforming units is simulated for three cases; two cases for auto-thermal reforming (ATR) with varying steam flow rates and a case for steam-methane reforming (SMR). Outcomes demonstrate an enhancement in the total refined production and the optimisation of the growth probability (α) in the Anderson–Schulz–Flory (ASF) relationship and H2:CO proportion. Aspen HYSYS simulation outputs indicate that the ATR reformer at a steam flow rate 3223 T/D and a CO2 flow rate 1500 T/D represents an optimal scenario for product enhancement. Furthermore, a techno-economic analysis indicates that the ATR (C3) option is the best performing economically with a net profit per input of natural gas and refined product output generating 542.94 ($/T) and 722.74 ($/T) respectively. The environmental analysis demonstrates lowest carbon emissions with 1.76 and 2.34 kg CO2-e/T.



中文翻译:

注入CO 2对GTL工艺性能影响的模拟研究

这项研究通过注入CO 2来提高费-托工艺的效率。在三种情况下,对重整单元中的合成气生产进行了模拟。两种情况是蒸汽流量不同的自动热重整(ATR),另一种是蒸汽甲烷重整(SMR)。结果表明,安德森-舒尔茨-弗洛里(ASF)关系和H 2:CO比例提高了精炼总产量,并优化了生长概率(α)。Aspen HYSYS模拟输出表明,ATR重整器在蒸汽流量3223 T / D和CO 2下流量1500 T / D代表产品增强的最佳方案。此外,技术经济分析表明,ATR(C3)期权在经济上表现最佳,天然气和精炼产品产出的每输入纯利润分别为542.94($ / T)和722.74($ / T)。环境分析表明,最低的碳排放量为1.76和2.34 kg CO 2 -e / T。

更新日期:2020-02-06
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