一种新型炭载体在乙炔氢氯化反应中的应用.pdfVIP

学兔兔 化 工 进 展 ·536· CHEMICAL INDUSTRY AND ENGINEERING PROGRESS 201 1年第30卷第3期 一 种新型炭载体在乙炔氢氯化反应中的应用 徐龙龙，王绪根，张海洋，代 斌，刘志勇，张清峰 (石河子大学化学化工学院，新疆兵团化工绿色过程重点实验室，新疆 石河子 832003) 摘 要：采用等体积浸渍法制备了一系列不同载体的HgC12催化剂，利用BET、原子荧光光谱仪 (AFS)、元素 分析仪 (EA)等对样品进行了表征，考察了催化剂在固定床反应装置上进行乙炔氢氯化反应的性能，同时对催 化剂失活原因进行了初探。结果表明，不同载体催化剂催化性能和失活原因差异很大，其中以AC．2(沥青基球 形炭)为载体的HgC12／AC一2催化性能最佳，当HgC12含量为5％(质量分数)、乙炔空速36 h_。、温度140℃、 n(HC1)：n(C2H2)=I．05～1．1时，其初始转化率99％(比HgC12／AC一1提高39％)，选择性接近 100％，寿命可达 3168 h，催化性能优于现有工业高汞催化剂。 关键词：乙炔氢氯化；低汞催化剂；载体；失活 中图分类号：TQ 032 文献标志码：A 文章编号：1000—6613(2011)03—0536—06 Application of a novel carbon carrier in acetylene hydr0chl0rinati0n XULonglong，WANGXugen，ZHANGHaiyang，DAIBin，uU Zhiyong，ZHANG Qingfeng (School of Chemistry and Chemical Engineering Shihezi University，Key Laboratory for Green Processing of Chemical Engineering ofXinjiang Bingtuan，Shihezi 832003，Xinjiang，China) Abstract： The catalysts with HgC12 supported Oil different carriers were prepared by impregnation methods and characterized by BET，AFS and EA method．The catalytic performance in acetylene hydrOchl0rinatiOn to vinyl chloride was studied in a packed bed reactor．The causes of catalyst deactivation were dicussed．The results showed that the catalysts with HgC12 supported on different carriers were greatly different in both catalytic performance and cause of deactivation．An asphaltene based carbon AC一2 carrier was the best one for the reaction．When HgC12 loading was 5％，under the optimal conditions：acetylene GHSV 36 h ，140℃，n(HC1)：n(C2H2)=1．05～1．1，its initial conversion exceeded