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Process simulation of single-step dimethyl ether production via biomass gasification

Paper ID Volume ID Publish Year Pages File Format Full-Text
14733 1244 2009 7 PDF Available
Title
Process simulation of single-step dimethyl ether production via biomass gasification
Abstract

In this study, we simulated the single-step process of dimethyl ether (DME) synthesis via biomass gasification using ASPEN Plus™. The whole process comprised four parts: gasification, water gas shift reaction, gas purification, and single-step DME synthesis. We analyzed the influence of the oxygen/biomass and steam/biomass ratios on biomass gasification and synthesis performance. The syngas H2/CO ratio after water gas shift process was modulated to 1, and the syngas was then purified to remove H2S and CO2, using the Rectisol process. Syngas still contained trace amounts of H2S and about 3% CO2 after purification, which satisfied the synthesis demands. However, the high level of cold energy consumption was a problem during the purification process. The DME yield in this study was 0.37, assuming that the DME selectivity was 0.91 and that CO was totally converted. We performed environmental and economic analyses, and propose the development of a poly-generation process based on economic considerations.

Keywords
Biomass gasification; Single-step DME synthesis; Environmental analysis; Economic analysis; Poly-generation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biotechnology Advances - Volume 27, Issue 5, September–October 2009, Pages 599–605
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us