The design of new process, parametric analysis, technical and economic analysis of methanol production from biogas

In this study, a new process for producing methanol from biogas is presented. The process flowsheet was developed using Aspen HYSYS software, and sensitivity analysis of functional parameters was performed. In exergy analysis, the proposed process has an overall efficiency of 54.11%, in which the integration of the steam cycle plays an important role. The results also indicated that the overall exergy destruction rate is equal to 90527.02 kW, where the reformer and burner with 29% and 51% have the highest share in exergy destruction. Energy evaluation showed that the overall efficiency of converting biogas to methanol is 48.07%, and the intensity of losses per kilogram of methanol production is equal to 0.025 GJ. The economic analysis for the process was also carried out, and it was found that the production cost of each kilogram of methanol is equal to $ 286 with an annual profit of 1.2M$ and its lowest selling price is 0.31US$/kgMeOH\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$0.31\; {\text{US}}\$ {\text{/kg}}_{{{\text{MeOH}}}}$$\end{document}. In addition, according to the simulation results, the value of methanol production from biogas is equal to 0.619kgMeOH/kgbiogas\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$0.619 {\text{kg}}_{{{\text{MeOH}}}} /{\text{kg}}_{{{\text{biogas}}}}$$\end{document}.