Determination of the Optimum Operating Conditions for Direct Synthesis of Dimethyl Ether from Syngas
Determination of the Optimum Operating Conditions for Direct Synthesis of Dimethyl Ether from Syngas
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合成气直接合成二甲醚最佳操作条件的确定
DOI：
10.2202/1542-6580.1367
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
F. Yaripour
中科院分区：
文献类型：
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作者：
G. Moradi;Rohollah Ghanei;F. Yaripour
确定了合成气单步合成二甲醚(DME)的最佳操作条件。该双功能催化剂是通过将商用甲醇催化剂（KMT Co.）和脱水催化剂（H-MF-90）物理混合而制备的，并通过 XRD、XRF 和 BET 技术对其进行了表征。在搅拌浆态微型反应器中，在不同的操作条件范围内对合成气催化合成二甲醚进行了评价，这些操作条件是根据田口算法通过实验设计确定的。选择的操作条件范围如下：进料中的H2/CO摩尔比从0.26到1.5变化，压力从10到50 bar变化，温度从200到240 ℃变化，甲醇催化剂与脱水催化剂的重量比从0.67到4。在固定叶轮速度等于1600rpm和空速等于500的不同操作条件下进行了实验。毫升/gcat.h。综合实验结果，预测直接合成DME的最佳条件为：T=240℃，P=33.3Bar，H2/CO=1.5，甲醇催化剂与脱水催化剂的重量比等于3。
The optimum operating conditions of a single step synthesis of dimethyl ether (DME) from synthesis gas has been determined. The bifunctional catalyst has been prepared by physically mixing of a commercial methanol catalyst (KMT Co.) and a dehydration catalyst (H-MF-90) which has been characterized by XRD, XRF and BET techniques. Catalytic synthesis of dimethyl ether from synthesis gas was evaluated in agitated slurry micro reactor in different ranges of operating conditions which were determined by experimental design according to Taguchi algorithm. The range of operating conditions were chosen as follows: H2/CO mole ratio in feed varying from 0.26 to 1.5, the pressure varying from 10 to 50 bar, the temperature varying from 200 to 240 ºC and weight ratio of methanol catalyst to dehydration catalyst from 0.67 to 4. The experiments have been conducted for different operating conditions at fixed impeller speed equal to 1600rpm and space velocity equal to 500 ml/gcat.h. Considering the results of experiments, optimum conditions for direct synthesis of DME were predicted as follows: T=240 ºC, P=33.3 Bar, H2/CO=1.5 and weight ratio of methanol catalyst to dehydration catalyst equal to 3.