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Direct Synthesis of Dimethyl Ether from Synthesis Gas: Experimental Study and Mathematical Modeling Full article

Conference

XXII International Conference on Chemical Reactors
19-23 Sep 2016 , London

Journal

Chemical Engineering Journal
ISSN: 1385-8947 , E-ISSN: 1873-3212

Output data

Year: 2017, Volume: 329, Pages: 135-141 Pages count : 7 DOI: 10.1016/j.cej.2017.04.132

Tags

Direct synthesis of dimethyl ether, Mathematical modeling, Syngas

Authors

Kurzina I.A. ¹ , Reshetnikov S.I. ² , Karakchieva N.I. ^1,3 , Kurina L.N. ¹

Affiliations

1	Tomsk State University, 634050 Tomsk, pr. Lenina, 36, Russia
2	Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, pr. Akad. Lavrenteva, 5, Russia
3	Siberian Research Institute of Agriculture and Peat, Branch of the Siberian Federal Research Center, Russian Academy of Sciences, 3, Gagarina St., Tomsk 634050, Russia

Direct synthesis of dimethyl ether (DME) from syngas, was investigated over a CuO-ZnO-Al2O3 catalyst for methanol synthesis and a γ-Al2O3 catalyst for a methanol dehydration. On the base of mathematical modeling, thermodynamic analysis was carried out in a wide range of pressures (10-100 bar) and temperatures (220-280°C) for binary mixtures (H2 + CO) with an H2 /CO=1-6 molar ratio. The influence of reaction conditions on the equilibrium content of components in the mixture was modelled. The effect of the loading method of catalysts of the methanol synthesis and its dehydration (layerwise loading, mixing) in the DME synthesis in a single reaction step on the CO conversion and the yield of DME was experimentally studied. It has been demonstrated that the layerwise combined loading with the intermediate mixed layer of CuO-ZnO-Al2O3 catalysts of the methanol synthesis and the γ–Al2O3 catalyst for the DME synthesis (2:1:2, ratio parts, i.e. two parts of the catalyst of the methanol synthesis, one part of a mixture of the catalysts and two parts of the catalyst of the methanol dehydration) allow to obtain the higher yield of DME. The effect of operating conditions (pressure, temperature, ratio H2/CO, time on stream, and catalyst stability) on the CO conversion and yield of DME was studied. The optimal conditions for loading variant 2:1:2 are: the pressure is 30 bar, the temperature is 280°C and the initial ratio of H2/CO is equal to 2. At that, the CO conversion remains practically constant during 180 h reaction run.

Kurzina I.A. , Reshetnikov S.I. , Karakchieva N.I. , Kurina L.N.
Direct Synthesis of Dimethyl Ether from Synthesis Gas: Experimental Study and Mathematical Modeling
Chemical Engineering Journal. 2017. V.329. P.135-141. DOI: 10.1016/j.cej.2017.04.132 WOS Scopus РИНЦ AN OpenAlex

Published online:	May 2, 2017
Published print:	Dec 1, 2017

Web of science:	WOS:000410765700014
Scopus:	2-s2.0-85019044956
Elibrary:	31020343
Chemical Abstracts:	2017:731793
OpenAlex:	W2610248505

DB	Citing
Web of science	28
Scopus	30
Elibrary	31
OpenAlex	32