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Modeling and Techno-economic Assessment of the Sustainable Methanol Synthesis

Rahmat, Yoga Pranata (2020) Modeling and Techno-economic Assessment of the Sustainable Methanol Synthesis. Master's, Deutsches Zentrum für Luft- und Raumfahrt (DLR).

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Abstract

Greenhouse gas emissions, especially the carbon dioxide out of fossil fuel combustion, has a significant annual inclination. Methanol economy, as proposed by Prof. George Olah, offers a sustainable solution for such a condition. Captured carbon dioxide and electrolytic hydrogen can react to form methanol, where methanol acts as the main hub for the carbon neutral cycle. There are two options for synthesizing methanol, the one-step direct CO2 hydrogenation process, and the two-step CAMERE process via Reverse Water-Gas Shift (RWGS) reaction. This study analyzes the two processes techno-economically, in order to find the best alternative for producing the sustainable methanol. The first step was modeling and simulation of both processes in AspenPlus® environment. Techno-economic assessment was thereafter conducted using the German Aerospace Center (DLR) in-house tool, TEPET. Net production costs of CAMERE were 2.02 €/kg or €2.84 per liter of gasoline equivalent. The one-step process resulted in less than 1 ct€ cheaper net production costs than CAMERE. Operational expenditures from electricity were the main part (around 65%) of the total production costs for both processes. Direct CO2 hydrogenation had higher Power-to-Liquid efficiency of 39.1%. However, CAMERE showed better technical performance in terms of methanol selectivity and net used CO2, where the system carbon conversion reaches 93.5% and 87.6% of total captured CO2 converted to methanol. Furthermore, CAMERE resulted in a higher Hydrogen-to-Liquid efficiency of 81.4%. In conclusion, CAMERE process is the design recommendation for the sustainable methanol synthesis plant.

Item URL in elib:https://elib.dlr.de/135373/
Document Type:Thesis (Master's)
Title:Modeling and Techno-economic Assessment of the Sustainable Methanol Synthesis
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Rahmat, Yoga PranataYoga.Rahmat (at) dlr.deUNSPECIFIED
Date:18 May 2020
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:134
Status:Published
Keywords:Power-to-Liquid Techno-economic assessment Methanol TEPET
Institution:Deutsches Zentrum für Luft- und Raumfahrt (DLR)
Department:Institute of Engineering Thermodynamics
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Synthetic Hydrocarbons
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Synth. HC.)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Energy System Integration
Deposited By: Maier, Simon
Deposited On:23 Jun 2020 10:41
Last Modified:23 Jun 2020 10:41

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