混合碳四中异丁烯叠合催化剂工业应用及优化  

Industrial Application and Optimization of Isobutene Oligomerization Catalyst in Mixed C_(4)

作　　者：杨春亮 王旭 李锋 张巧敏 周茂森 YANG Chunliang;WANG Xu;Li Feng;ZHANG Qiaomin;ZHOU Maosen(Ningbo Kingfa Advanced Materials Co.,Ltd.,Ningbo 315800,China)

机构地区：[1]宁波金发新材料有限公司,宁波315803

出　　处：《化工时刊》2024年第3期30-35,共6页Chemical Industry Times

摘　　要：从操作参数、混合碳四组成、混合碳四水含量、催化剂等几个方面对异丁烯叠合催化剂进行分析和比较。研究发现,采用离子交换树脂的异丁烯叠合催化剂含有一定量的水分,在操作参数和混合碳四组成变化不大的情况下,催化剂自身水含量和混合碳四中的水含量是影响催化剂性能的关键因素。催化剂水含量越低,遇水后体积膨胀率越大,催化剂破碎、粉化越严重,最终导致催化剂性能下降,反应器受损。催化剂含水量越高,遇水后体积膨胀率越小,催化剂越不易破碎,温度对催化剂膨胀率的影响越小。但催化剂含水量过大,会影响异丁烯的转化效果,为了控制催化剂的膨胀率,保证催化剂的活性,催化剂的水含量最好控制在20%~25%,混合碳四中的水含量在0.05%以下,防止夹带明水,避免引起催化剂的膨胀和破碎。经过优化后,催化剂可稳定运行2年左右,反应器出口异丁烯含量在0.5%以下。The isobutene oligomerization catalyst was analyzed and compared from several aspects,such as operating parameters,composition of mixed C_(4),water content of mixed C_(4)and catalyst itself.It was found that the isobutene oligomerization catalyst with ion exchange resin contained a certain amount of water,and the water content of the catalyst itself and the water content of the mixed C_(4)were the key factors affecting the catalyst performance under the condition that the operating parameters and the composition of the mixed C_(4)didnt change much.The lower the water content of the catalyst was,the greater the volume expansion rate was after meeting water,and the more serious the crushing and pulverization of the catalyst was,which eventually leads to the degradation of the catalyst performance and the damage of the reactor.The higher the water content of the catalyst was,the smaller the volume expansion rate was after meeting water,the less easily the catalyst was broken,and the smaller the influence of temperature on the expansion rate of the catalyst was.Too much water content in the catalyst will affect the conversion of isobutene.In order to control the expansion rate of the catalyst and ensure the activity of the catalyst,it was best to control the water content of the catalyst at 20%~25%,and the water content in the mixed C_(4)below 0.05%,so as to prevented the entrainment of water and caused the expansion and breakage of the catalyst.After optimization,the catalyst can run stably for about 2 years,and the isobutene content at the outlet of the reactor was below 0.5%.

关 键 词：混合碳四 异丁烯 叠合 工业应用 

分 类 号：TQ221[化学工程—有机化工]