共轭双烯聚合物选择性加氢反应器技术进展

对以橡胶、弹性体为代表的含共轭双烯聚合物进行烯属双键的选择性加氢,可显著提高聚合物的稳定性;加氢反应器和反应工艺是制约加氢度和产率的关键技术之一。该文综述了目前共轭双烯聚合物选择性加氢反应器的技术进展,包括以机械搅拌反应器、鼓泡反应器、外循环反应器为代表的全混流型反应器;以填料塔和静态混合管式反应器为代表的平推流型反应器;以及各种反应器的组合技术、特殊操作方式。结合加氢体系的流体力学特征和反应动力学特征,分析了制约加氢度和产率的关键问题,总结了进一步提高加氢度和产率、降低能耗物耗的潜在途径。

Advances in Reactor Technology for Selective Hydrogenation of Diene-Based Polymer

The selective hydrogenation of conjugated diene-based polymer,including rubber and elastomer,can significantly improve the stability of the polymer.The hydrogenation reactor and the reaction process is one of the key technologies which impact the hydrogenation degree and efficiency.This review is focused on the progress in reactor technologies for selective hydrogenation of the conjugated diene-based polymer.Both the continuous stirred tank reactor(CSTR) including mechanical stirring reactor,the bubbling reactor and loop reactor,and the plug flow reactor(PFR) including packed tower and static mixed tubular reactor,are employed to hydrogenate diene-based polymer.The technologies based on the combination of CSTR and PFR have been developed to improve the hydrogenation degree and process efficiency.According to the fluid dynamics and reaction kinetics of the hydrogenation system,the key issues impacting the hydrogenation degree and efficiency are analyzed and the potential way to promote hydrogenation and to reduce the energy/material consumption is summarized.