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Study on systems based on coal and natural gas for producing dimethyl ether / Li Zhou in Industrial & engineering chemistry research, Vol. 48 N° 8 (Avril 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 4101–4108 Titre : Study on systems based on coal and natural gas for producing dimethyl ether Type de document : texte imprimé Auteurs : Li Zhou, Auteur ; Shanying Hu, Auteur ; Dingjiang Chen, Auteur Année de publication : 2009 Article en page(s) : pp. 4101–4108 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Dimethyl  ether  Coal  Recycling  ratios Résumé : China is a coal-dependent country and will remain so for a long time. Dimethyl ether (DME), a potential substitute for liquid fuel, is a kind of clean diesel motor fuel. The production of DME from coal is meaningful and is studied in this article. Considering the C/H ratios of coal and natural gas (NG), the cofeed (coal and NG) system (CFS), which does not contain the water gas shift process, is studied. It can reduce CO2 emission and increase the conversion rate of carbon, producing more DME. The CFS is simulated and compared with the coal-based and NG-based systems with different recycling ratios. The part of the exhaust gas that is not recycled is burned, producing electricity. On the basis of the simulation results, the thermal efficiency, economic index, and CO2 emission ratio are calculated separately. The CFS with a 100% recycling ratio has the best comprehensive evaluation index, while the energy, economy, and environment were considered at the same time. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8006177 [article] Study on systems based on coal and natural gas for producing dimethyl ether [texte imprimé] / Li Zhou, Auteur ; Shanying Hu, Auteur ; Dingjiang Chen, Auteur . - 2009 . - pp. 4101–4108. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 4101–4108 Mots-clés : Dimethyl  ether  Coal  Recycling  ratios Résumé : China is a coal-dependent country and will remain so for a long time. Dimethyl ether (DME), a potential substitute for liquid fuel, is a kind of clean diesel motor fuel. The production of DME from coal is meaningful and is studied in this article. Considering the C/H ratios of coal and natural gas (NG), the cofeed (coal and NG) system (CFS), which does not contain the water gas shift process, is studied. It can reduce CO2 emission and increase the conversion rate of carbon, producing more DME. The CFS is simulated and compared with the coal-based and NG-based systems with different recycling ratios. The part of the exhaust gas that is not recycled is burned, producing electricity. On the basis of the simulation results, the thermal efficiency, economic index, and CO2 emission ratio are calculated separately. The CFS with a 100% recycling ratio has the best comprehensive evaluation index, while the energy, economy, and environment were considered at the same time. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8006177