β分子筛的催化裂化性能考察  

Investigation on behaviors of β zeolite in catalytic cracking

作　　者：高晓慧 庞新梅 张莉 石晓庆 周志远 高雄厚 

机构地区：[1]中国石油石油化工研究院,北京100029 [2]中国石油石油化工研究院兰州化工研究中心,甘肃兰州730060

出　　处：《工业催化》2008年第10期127-129,共3页Industrial Catalysis

基　　金：中国石油天然气集团公司资助项目(2004CB217806)

摘　　要：以重油(70%新疆蜡油掺和30%新疆渣油)为原料,在FFB和ACE装置上对3种不同硅铝质量比β分子筛和工业应用的ZSM-5分子筛制备的催化裂化助剂的反应性能进行对比评价。结果表明,β分子筛对重油组分的裂化能力强于ZSM-5,对汽油组分的选择裂化能力弱于ZSM-5,液化气增加量小于ZSM-5,提高汽油辛烷值能力与ZSM-5相当。同时,随着β分子筛硅铝质量比升高,其催化裂化产物中汽油和总液收增加,重油减少。因此,β分子筛助剂适用于以追求燃料汽油生产为主的炼油企业,满足液化气增加不多和提高汽油辛烷值的需要。β zeolites with different silica/alumina ratio and commercial promoters prepared from ZSM-5 zeolite were tested on FFB and ACE FCC apparatus, using heavy oil（70% Xinjiang paraffin oil and 30% Xinjiang residue） as the feed. The results showed that, compared with ZSM-5, β zeolite exhibited stronger capacity for cracking of heavy oil, lower selectivity to gasoline, the lower yield of LPG and comparable capability for enhancing the octane number. The yield of gasoline and total liquid increased while the yield of heavy oil decreased with the increase of silica/alumina ratio over ZSM-5 zeolite. β zeolite is suitable for refineries for more yield of fuel gasoline, with slight increment of LPG and enhancement of octane number in gasoline.

关 键 词：石油化学工程 Β沸石 ZSM-5 催化裂化 助剂 

分 类 号：TQ624.91[化学工程—精细化工] TQ424.25