دانلود مقاله ISI انگلیسی شماره 102773
ترجمه فارسی عنوان مقاله

بهینه سازی چند هدفه ریفرنج متان بخار با توجه به شاخص نسبت استئوکیومتر برای تولید متانول

عنوان انگلیسی
Multi-objective optimisation of steam methane reforming considering stoichiometric ratio indicator for methanol production
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
102773 2018 47 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Journal of Cleaner Production, Volume 180, 10 April 2018, Pages 655-665

پیش نمایش مقاله
پیش نمایش مقاله  بهینه سازی چند هدفه ریفرنج متان بخار با توجه به شاخص نسبت استئوکیومتر برای تولید متانول

چکیده انگلیسی

This work proposes a novel configuration for steam methane reformers (SMR) in order to improve their syngas stoichiometric ratio (SR). This is a decisive element for methanol producers to increase their production tonnage. While the optimum theoretical SR value is around 2, many conventional SMRs operate far beyond this value due to thermodynamic equilibrium limitations. In the new SMR design CO2, which could be an industrial off gas, is injected into the reactor in multiple stages. The corresponding CO2 injection flow rate is determined by a multi-objective optimization method. The optimum flow rate at each stage is chosen to minimise abs (SR-2) while maintaining the CH4 conversion at its highest value (about 68%). Furthermore, the new design helps to improve the thermodynamic equilibrium conversion in SMR resulting in 33% more CO production. As well as this, the pressure drop along the new reactor is proved to be substantially lower than the conventional SMR.