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High efficiency production of substitute natural gas from biomass

Paper ID Volume ID Publish Year Pages File Format Full-Text
46494 46440 2012 5 PDF Available
Title
High efficiency production of substitute natural gas from biomass
Abstract

The Energy research Centre of the Netherlands (ECN) is developing technology for the production of Substitute Natural Gas (SNG) from biomass with 70% efficiency. An essential step in the process is the removal of thiophene, while benzene and toluene must be retained and converted into methane. Experimental results are presented which show that thiophene can be reduced from 10 ppmv to 0.1 ppmv by commercial hydrodesulphurization (HDS) catalysts at atmospheric pressure. The catalysts also promote the water gas shift and hydrogenation reactions. The operating temperature of 550 °C is too high and the Gas Hourly Space Velocity (GHSV) of 100 h−1 too low for practical application. Future SNG installations will operate at higher pressure, which should promote the catalytic activity at lower temperature and result in higher GHSV values. The catalyst used for conversion of benzene did work initially, but degraded within 50 h.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Production of SNG from biomass through gasification at 800–900 °C. ► Conversion of biomass producer gas requires removal of 10 ppmv thiophene. ► Benzene and ethylene must be converted to methane to obtain high efficiency. ► HDS of thiophene in biomass producer gas is possible at atmospheric pressure. ► HDS catalyst also promotes water–gas shift and hydrogenation of ethylene.

Keywords
Biomass; Gasification; Methanation; Hydrodesulphurization; Hydrogenation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 111–112, 12 January 2012, Pages 456–460
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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