千吨级丙烯直接环氧化制环氧丙烷工业试验

 在实验室小试和单管试验的基础上，华东理工大学与天津大沽化工股份有限公司合作在天津市滨海新区建成了1 500 t/a丙烯直接环氧化制环氧丙烷装置。工业试验的研究结果表明：自主研发的工业试验装置连续平稳运行超过4 000 h，期间环氧化反应的双氧水转化率达到90%~96%，环氧丙烷选择性达到90%~92%，产能达到了1 500 t/a的设计要求；经过精馏纯化，产品的各项性质指标均达到了优级品的要求，实现了环氧丙烷的清洁生产。工业试验结果将为万吨级的丙烯直接环氧化制环氧丙烷装置提供设计依据和参考。

COMMERCIAL TEST OF KILO-TON SCALE DIRECT PROPYLENE EPOXIDATION

A direct propylene epoxidation demonstration unit with 1500t/a capacity with catalyst TS-1 has been stably running for 4 000 h. The results indicated that the hydrogen peroxide conversion and the propylene oxide selectivity is maintained at 90%~96% and 90%~92%, respectively, meeting the unit design requirement. The quality of the product PO purified by distillation is in line with the national superior grade standard. By the direct propylene epoxidation technology, the pollutions of waste materials can be solved and the energy consumption can be reduced. And the existing problems and applying prospects are also discussed.