Work

Potential Environmental Impact Evaluation of the Methanol Synthesis Process by Gas-to-Methanol Technology

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Two methanol production process options based on gas-to-methanol (GTM) technology according to the CO 2 feed location (option 1: CO 2 is fed to the methanol synthesis unit via a reformer; option 2: CO 2 is directly fed to the methanol synthesis unit) are proposed. In this study, we simulated these two methanol synthesis process options at a steam/natural gas (S/NG) ratio of 1.5 and evaluated the environmental impact of the two options by comparing the potential environment impact (PEI) according to the recycle ratio of unreacted syngas. We simulated the process using Aspen Plus and quantitated the PEI rates using the Waste Reduction (WAR) algorithm (version 1.0). The results show that in both cases PEI rates decrease with increasing recycle ratio of the unreacted syngas and thus become environmentally friendly. Also, it was demonstrated that option 1 is more environmentally friendly than option 2, and when the recycle ratio increases from 0 to 0.9, the total rate of PEI output decreases from 176.3 to 93.4 PEI/h by 53.0% and the PEI generation rate decreases from 149.9 to 67.0 PEI/h by 44.7%.

Source: ACS Omega

DOI: 10.1021/acsomega.4c10680

Authors: Kyong Song Pak, Yong Sol Hong

Institutions: Kim Chaek University of Technology, MIREA - Russian Technological University

Language: English

Topic: Catalysts for Methane Reforming

Subfield: Catalysis

Field: Chemical Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Climate action, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,935