Direct synthesis of dimethyl ether from synthesis gas: Experimental study and mathematical modeling : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.cej.2017.04.132

Ключевые слова: Direct synthesis of dimethyl ether, Mathematical modeling, Syngas

Аннотация: 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 binarПоказать полностьюy mixtures (H2 + CO) with an H2/CO = 1–6 M 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. © 2017

Ссылки на полный текст

Издание

Журнал: Chemical Engineering Journal

Выпуск журнала: Vol. 329

Номера страниц: 135-141

ISSN журнала: 13858947

Издатель: Elsevier B.V.

Персоны

  • Kurzina I.A. (Tomsk State University, 634050 Tomsk, pr. Lenina, 36, Russian Federation)
  • Reshetnikov S.I. (Boreskov Institute of Catalysis SB RAS, 630090 Novosibirsk, pr. Akad. Lavrenteva, 5, Russian Federation)
  • Karakchieva N.I. (Tomsk State University, 634050 Tomsk, pr. Lenina, 36, Russian Federation, Siberian Research Institute of Agriculture and Peat, Branch of the Siberian Federal Research Center, Russian Academy of Sciences, 3, Gagarina St., Tomsk, Russian Federation)
  • Kurina L.N. (Tomsk State University, 634050 Tomsk, pr. Lenina, 36, Russian Federation)

Вхождение в базы данных