煤炭转化2025，Vol.48Issue(3)：73-80,8.DOI:10.19726/j.cnki.ebcc.202503009
复合分子筛催化剂对煤直接液化油加氢改质反应的性能研究
Investigation on effects of composite zeolite catalysts on hydro-upgrading performance of direct coal liquefaction oil
李慧萍 1单贤根2
作者信息
- 1. 国能基石化工科技(上海)有限公司,201108 上海
- 2. 煤直接液化国家重点工程实验室,201108 上海
- 折叠
摘要
Abstract
A series of catalysts using different proportions of zeolite were prepared to study the synergistic effect of USY and β zeolites on the hydro-upgrading performance of direct coal liquefac-tion(DCL)oil.The NiW/USY-β supported catalysts were obtained through kneading USY and β zeolites with pseudo-boehmite,followed by calcination and impregnation.The catalytic performance of these catalysts was evaluated using a fixed-bed microreactor,with DCL oil as the raw material.The results show that the change of the ratio of USY to β zeolites affects the pore properties,acid properties and hydro-upgrading performance of the catalyst.Consequently,this affects the catalysts'selectivity toward ring-opening reactions of DCL oil,as well as the yield and selectivity of diesel-range products.In the experimental conditions of the temperature of 360℃,the pressure of 13 MPa,the space speed of 2.5/h and hydrogen-to-oil ratio of 800,the NiW/Uβ-1(USY∶β∶Al2O=25∶2∶73)catalyst exhibits optimal performance.It achieves a conversion ratio of 45.63%for the>260℃frac-tion,a diesel yield of 86.20%,and a selectivity of 83.41%for the 145℃‒260℃distillate fraction.关键词
复合分子筛/催化剂/煤直接液化油/多环烷烃/选择性开环Key words
composite zeolites/catalyst/direct coal liquefaction oil/polycyclic cycloal-kanes/selective opening of cycloalkanes分类
化学化工引用本文复制引用
李慧萍,单贤根..复合分子筛催化剂对煤直接液化油加氢改质反应的性能研究[J].煤炭转化,2025,48(3):73-80,8.
