PTA氧化残渣气化脱羧制备芳烃研究  

A Study of Aromatics Preparation by Gasification and Decarboxylation of PTA Oxidation Residue

作　　者：王云亮[1] 付帅明 张玲玲[2] 余逸梵 黄正梁[2,3] 阳永荣 WANG Yunliang;FU Shuaiming;ZHANG Lingling;YU Yifan;HUANG Zhengliang;YANG Yongrong(Sinopec Yangzi Petrochemical Company Limited,Nanjing 210048,China;College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China;Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,Hangzhou 310027,China)

机构地区：[1]中国石化扬子石油化工有限公司化工厂,江苏南京210048 [2]浙江大学化学工程与生物工程学院,浙江杭州310027 [3]浙江省化工高效制造技术重点实验室,浙江杭州310027

出　　处：《化学反应工程与工艺》2022年第3期240-247,共8页Chemical Reaction Engineering and Technology

摘　　要：基于将精对苯二甲酸(PTA)氧化残渣中芳香酸转化制备芳烃的目的,考察了不同硅铝比ZSM-5催化剂对芳香酸脱羧性能的影响,制备了Zn改性ZSM-5分子筛催化剂,研究了Zn负载量对催化剂物性及芳香酸脱羧性能的影响,并优化了PTA氧化残渣在气化催化脱羧过程的工艺条件。结果表明:当浸渍法引入的Zn物种负载量为1.0%(质量分数)时,Zn/ZSM-5分子筛在脱羧温度为500℃、重时空速为6.0 h^(-1)的条件下,具有较高的催化转化率以及最大的目标产物质量收率,芳香酸质量转化率达到90%以上,苯、甲苯的质量收率分别为26.9%和2.53%。The effects of ZSM-5 catalysts with different molar ratios of silicon to aluminum on the decarboxylation performance of aromatic acids were investigated, based on the purpose of catalytic decarboxylation of aromatic acids from pure terephthalic acid(PTA) oxidation residue to aromatics. And ZSM-5 zeolite catalysts modified with Zn were prepared. Effects of Zn loading on the physical properties of the catalysts and decarboxylation performance of aromatic acids were studied, and process conditions in gasification catalytic decarboxylation of PTA oxidation residue were optimized. The results showed that the higher conversion of aromatic acids and the maximum mass yield of target product were obtained catalyzed by Zn/ZSM-5 within the loading amount of Zn species introduced by impregnation method was 1.0 % mass fraction, under the reaction temperature of 500 ℃ and mass space velocity of 6.0 h^(-1). The mass conversion of aromatic acid was more than 90% and the mass yields of benzene and toluene were 26.9% and 2.53%respectively.

关 键 词：精对苯二甲酸 氧化残渣 催化脱羧 芳烃 ZSM-5 分子筛 

分 类 号：TQ09[化学工程]