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Scale study of direct synthesis of dimethyl ether from biomass synthesis gas

Paper ID Volume ID Publish Year Pages File Format Full-Text
14724 1244 2009 4 PDF Available
Title
Scale study of direct synthesis of dimethyl ether from biomass synthesis gas
Abstract

We investigated the synthesis of dimethyl ether (DME) from biomass synthesis gas using a kind of hybrid catalyst consisting of methanol and HZSM-5 zeolite in a fixed-bed reactor in a 100 ton/year pilot plant. The biomass synthesis gas was produced by oxygen-rich gasification of corn core in a two-stage fixed bed. The results showed that CO conversions reached 82.00% and 73.55%, the selectivities for DME were 73.95% and 69.73%, and the space–time yields were 124.28 kg m− 3 h− 1 and 203.80 kg m− 3 h− 1 when gas hourly space velocities were 650 h− 1 and 1200 h− 1, respectively. Deoxidation and tar removal from biomass synthesis gas was critical to the stable operation of the DME synthesis system. Using single-pass synthesis, the H2/CO ratio improved from 0.98–1.17 to 2.12–2.22. The yield of DME would be increased greatly if the exhaust was reused after removal of the CO2.

Keywords
100 ton/year scale; Biomass; Synthesis gas; DME
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biotechnology Advances - Volume 27, Issue 5, September–October 2009, Pages 551–554
Authors
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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
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us