三维工艺1,4-丁炔二醇催化剂的开发

Development of Catalyst for 1,4-Butynediol Production by Three-dimensional Process

三维1,4-丁二醇(BDO)生产工艺中1,4-丁炔二醇合成催化剂采用硅酸镁负载氧化铜铋催化剂,使用过程存在催化剂容易粉化、反应体催化剂颗粒度细、过滤性差等问题。开发了硅酸镁负载铜铋催化剂,采用了改良的硅酸镁为载体,配合多次浸渍工艺制备了蛋壳型硅酸镁负载铜铋催化剂,经过公斤级催化剂评价达到了工业应用的需要,催化剂的活性、选择性与目前铜铋催化剂性能相当,颗粒度耐磨性能明显提高,在同样的评价条件下,本项目开发的催化剂较现有工业催化剂的颗粒度大1倍以上,过滤性能明显提高,中试评价催化剂连续使用100天以上,过滤器未见堵塞现象,该催化剂完全可替代目前工业催化剂用于三维BDO工艺当中,提高装置的操作效率。

In the three-dimensional 1,4-butanediol(BDO)production process,magnesium silicate supported copper-bismuth oxide catalyst is used.There are some problems in the use process,such as easy pulverization of catalyst,fine particle size of reactant catalyst and poor filterability.In this paper,the magnesium silicate supported copper-bismuth catalyst was developed with improved magnesium silicate as the support.The eggshell magnesium silicate supported Cu-bismuth catalyst was prepared with multiple impregnation process,and the activity and selectivity of the catalyst reached the demand of industrial application through the evaluation of kilogram catalyst.The activity and selectivity of the catalyst were similar to the performance of the current copper-bismuth catalyst,and the wear resistance of the particle size was significantly improved.Under the same evaluation conditions,the particle size of the catalyst developed in this project was more than double that of the existing industrial catalyst.The filter performance was significantly improved.In the pilot test,the catalyst was continuously used for more than 100 d,and no clogging phenomenon was found in the filter.The test results show the catalyst can completely replace the current industrial catalyst in the three-dimensional BDO process,and improve the operating efficiency of the device.