Scale-up preparation of catalysts for selective oxidation to produce methacrolein and pilot evaluation
WANG Guo-liang1, LIU Bo2, WANG Lu1, FENG Sha-sha1, WANG Wen-hua3, WANG Lei1,3
1. College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, China; 2. Shandong Chambroad Petrochemicals Co., Ltd., Binzhou 256500, China; 3. Shandong Provincial Collaborative Innovation Center for Comprehensive Utilization of Light Hydrocarbon, Yantai 264005, China
Abstract: Two batches of catalysts for selective oxidation to produce methacrolein are prepared in a kilogram scale by coprecipitation method based on Mo-Bi composite oxides.The characterization results by X-ray diffraction and Fourier transform infrared spectroscopy indicate that the prepared catalysts have almost the same physicochemical properties as the catalyst that is prepared in an experiment scale.The performance evaluation for two batches of catalysts at different reaction temperatures shows that all catalysts exhibit similar catalytic activity,indicating there are no obvious scale-up effects in the amplification preparation process and there is excellent reproducibility.Finally,a long period of performance evaluation is carried out for the catalysts.It is shown that the yield of the target product methacrolein has always remained between 83% and 93% in the temperature range of 320-380℃,although the hot spot of the catalyst bed moves with the preset temperature.It is proved that the catalyst has an excellent temperature operating flexibility,representing a good industrial prospect.
王国梁, 刘波, 王璐, 冯莎莎, 王文华, 王磊. 选择氧化制甲基丙烯醛催化剂的放大制备及中试评价研究[J]. 现代化工, 2019, 39(12): 201-204,209.
WANG Guo-liang, LIU Bo, WANG Lu, FENG Sha-sha, WANG Wen-hua, WANG Lei. Scale-up preparation of catalysts for selective oxidation to produce methacrolein and pilot evaluation. Modern Chemical Industry, 2019, 39(12): 201-204,209.
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