摘要
分别以改性Y分子筛、H-Beta分子筛及改性YH-Beta复配分子筛为酸性组分制备载体,然后采用等体积浸渍法制备Ni-Mo型加氢裂化催化剂。通过X射线衍射、N2吸附-脱附、NH 3程序升温脱附、吡啶吸附红外光谱、H2-程序升温还原等方法对催化剂进行分析表征,结果表明:与采用改性Y分子筛、H-Beta分子筛制备的催化剂相比,采用改性YH-Beta复配分子筛制备的催化剂有较适宜的酸量和酸强度,活性金属分散均匀,催化剂的裂化和加氢功能匹配合理。以环烷基直馏柴油为原料,在较高的反应温度条件下,3种催化剂中改性复配分子筛催化剂明显抑制了二次裂化反应,在较高转化率条件下,其加氢裂化产物总液体收率最高,轻石脑油收率最低,重石脑油收率最高,重石脑油芳烃潜含量和柴油十六烷值均较高。
Using the modified Y,H-Beta molecular sieves and Y H-Beta composite molecular sieves as acid components,respectively,the hydrocracking catalysts were prepared by equal volume impregnation method.The catalysts were characterized by XRD,BET,NH 3-TPD,Py-FTIR and H2-TPR techniques.The results showed that compared with the catalysts prepared by Y molecular sieves and H-Beta molecular sieves,the catalyst prepared by modified Y H-Beta compound molecular sieve has suitable acid amount and strength,and the active metals are uniformly dispersed,and the cracking and hydrogenation functions of the catalyst are reasonably matched.When the naphthenic straight-run diesel fraction was used as raw material,the composite catalyst could inhibite the secondary cracking obviously at high reaction temperature;and at higher conversion rate,the total liquid yield was the highest and the light naphtha yield was the lowest,while the yield of heavy naphtha was the highest,the potential aromatic of heavy naphtha and the cetane number of diesel fraction were both higher.
作者
宋国良
肖寒
张景成
张尚强
张玉婷
孙彦民
南军
于海斌
Song Guoliang;Xiao Han;Zhang Jingcheng;Zhang Shangqiang;Zhang Yuting;Sun Yanmin;Nan Jun;Yu Haibin(CNOOC Tianjin Chemical Research Design Institute Company Limited,Tianjin 300131;Tianjin Refining and Technology Engineering Center;China University of Petroleum(Beijing))
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2021年第1期72-78,共7页
Petroleum Processing and Petrochemicals
基金
中海油能源发展股份有限公司科技项目(HFKJ-TJY2018-03)。
关键词
分子筛
催化剂
环烷基直馏柴油
加氢裂化
molecular sieve
catalyst
naphthenic straight-run diesel
hydrocracking
