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VAPOR-LIQUID EQUILIBRIA FOR PROPYLENE -METHANOL-WATER SYSTEM
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作者 陈晓晖 王春艳 +1 位作者 许锡恩 陈宪 《Transactions of Tianjin University》 EI CAS 1999年第1期101-104,共4页
In this article VLE data for a ternary system (propylene-methanol-water) under 30~60 C,0. 3~0. 9 MPa with a mass ratio of methanol to water of 9:1, 8: 2, 7: 3 were determined with a static equilibrium still, and wer... In this article VLE data for a ternary system (propylene-methanol-water) under 30~60 C,0. 3~0. 9 MPa with a mass ratio of methanol to water of 9:1, 8: 2, 7: 3 were determined with a static equilibrium still, and were correlated by using Peng-Robinson model. The average relative error ofpropylene concentration in liquid phase is 1. 46 %. The results indicate that the models are very suitablefor the ternary system and the data are reliable. 展开更多
关键词 propylene methanol water vapor-liquid phase equilibria Peng-Robinson model
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Catalytic Hydrogenation of Methanol-Containing Effluent from Epoxidation of Propylene
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作者 Cheng Ke 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2015年第3期94-101,共8页
This paper describes the hydrogenation of impurities in the methanol-containing effluent from the propylene epoxidation process with hydrogen peroxide. The effects of reaction temperature, pressure, weight hourly spac... This paper describes the hydrogenation of impurities in the methanol-containing effluent from the propylene epoxidation process with hydrogen peroxide. The effects of reaction temperature, pressure, weight hourly space velocity(WHSV) and H2/methanol ratio on the concentration of various impurities in methanol solvent were investigated. It was found out that the aldehyde, hydrogen peroxide and nitro compounds in the methanol solvent could be completely hydrogenated over the Ni catalyst under proper reaction conditions. 90% of acetone and up to 50% of acetals(ketals) existing in the methanol solvent could be hydrogenated. No significant change was observed for the rest of the impurities that were present in the methanol solvent(i. e., 1-methoxy-2-propanol, 2-methoxy-1-propanol and 1,2-propanediol). The H2O2 decomposition reaction was enhanced using Ni catalyst, through the formation of NioOH, but no oxygen was found in the off-gas of hydrogenation reaction since NioH could react on NioOH formed via dissociative adsorption of hydrogen peroxide, or on NioO formed via adsorption of oxygen. 展开更多
关键词 PROPYLENE EPOXIDATION METHANOL HYDROGENATION
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