Synthesis of Bio-Dimethyl Ether Based on Carbon Dioxide-Enhanced Gasification of Biomass: Process Simulation Using Aspen Plus

Ashak M. Parvez, Iqbal M. Mujtaba, Philip Hall, Edward H. Lester, Tao Wu

Research output: Journal PublicationArticlepeer-review

9 Citations (Scopus)

Abstract

Process simulation for a single-step synthesis of dimethyl ether (DME) based on the CO2-enhanced gasification of rice straw was conducted using Aspen Plus. The process consists of a gasification unit, a heat recovery unit, a gas purification unit, a single-step DME synthesis unit, and a DME separation unit. In the simulation, highly pure DME was produced by the control of CO2 concentration in syngas to a very low level prior to synthesis. A gasification system efficiency of 36.7% and CO2 emission of 1.31kgkgDME-1 were achieved. This bio-DME production based on the CO2-enhanced gasification of biomass was cost-effective as it required 19.6% less biomass than that of DME production based on conventional biomass gasification. The performance and environmental benefits of the proposed process could be further improved by the utilization of unreacted gases and the managing of CO2 generated by the incorporation of a polygeneration concept or carbon storage.

Original languageEnglish
Pages (from-to)526-535
Number of pages10
JournalEnergy Technology
Volume4
Issue number4
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

  • Biomass
  • Gasification
  • Industrial chemistry
  • Renewable resources
  • Sustainability assessment

ASJC Scopus subject areas

  • Energy (all)

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