To main content

Carbon Capture Utilization and Storage in Methanol Production Using a Dry Reforming-Based Chemical Looping Technology

Abstract

This further investigates the concept of gas switching dry reforming (GSDR) that efficiently converts the two major greenhouse gases (CO2 and CH4) into a valuable product (syngas) for gas-to-liquid (GTL) syntheses. The proposed GSDR is based on chemical looping technology but avoids external circulation of solids (metal oxides) by alternating the supply of reducing and oxidizing gas into a single fluidized bed reactor to achieve redox cycles. Each cycle consists of three steps where a metal oxide/catalyst is first reduced using GTL off-gases to produce CO2 (and steam) that is supplied to the next reforming step to produce syngas for GTL processes. The metal oxide is then reoxidized in the third step associated with heat generation (through the exothermic oxidation reaction of the metal oxide and air) to provide the heat needed for the endothermic dry methane reforming step. Experimental demonstrations have shown that a syngas H2/CO molar ratio between 1 and 2 suitable for methanol production could be achieved. A further demonstration shows that pressure has negative effects on gas conversion. Following the successful experimental campaign, process simulations were completed using ASPEN to show how the GSDR process can be integrated into a methanol (MeOH) production plant.
Read the publication

Category

Academic article

Language

English

Author(s)

  • Ambrose Ugwu
  • Mogahid Osman
  • Abdelghafour Zaabout
  • Shahriar Amini

Affiliation

  • SINTEF Industry / Process Technology
  • Norwegian University of Science and Technology
  • University of Alabama

Year

2022

Published in

Energy & Fuels

ISSN

0887-0624

Volume

36

Issue

17

Page(s)

9719 - 9735

View this publication at Norwegian Research Information Repository