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Production of Dimethyl Ether from Nitrogen-Containing Syngas
Petroleum Chemistry ( IF 1.4 ) Pub Date : 2020-11-17 , DOI: 10.1134/s0965544121010126
G. I. Lin , M. A. Kipnis

Abstract

A series of experiments in conversion of nitrogen-rich (above 40 vol %) syngas to produce dimethyl ether (DME) was carried out in a flow-through pilot installation. Two commercial catalysts, specifically a DV-8-2 methanol catalyst and a γ-Al2O3 dehydration catalyst, were used as components of a bifunctional catalyst. The paper introduces the concept of reacting gas, the content of which in syngas corresponds to the sum of the content of hydrogen and carbon oxides. No methanol or DME was detected in the converted gas leaving the reactor, as these compounds condense in a water-cooled separator. The following performance values were achieved after more than 600 total running hours of the bifunctional catalyst: DME selectivity at least 66% and DME productivity up to 340 L kgcat–1 h–1. The study of single-stage DME synthesis from nitrogen-containing syngas has demonstrated the practicability for an industrial process technology using commercial components in a bifunctional catalyst.



中文翻译:

含氮合成气生产二甲醚

摘要

在流通式中试装置中进行了一系列富氮(高于40%(体积))合成气转化为二甲醚(DME)的实验。两个商业催化剂,特别是DV-8-2甲醇催化剂和在γ-Al 2 ö 3脱水催化剂用作双功能催化剂的组分。本文介绍了反应气体的概念,合成气中反应气体的含量与氢和碳氧化物含量的总和相对应。在离开反应器的转化气体中未检测到甲醇或DME,因为这些化合物在水冷分离器中冷凝。在双功能催化剂的总运行时间超过600小时后,可获得以下性能值:DME选择性至少为66%,DME生产率高达340 L kg cat –1 h –1。由含氮合成气进行单级DME合成的研究表明,在双官能催化剂中使用工业组分的工业加工技术具有实用性。

更新日期:2020-11-23
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