分子筛含量对多产乙烯原料型柴油加氢改质催化剂性能的影响
EFFECT OF ZEOLITE CONTENT ON THE PERFORMANCE OF DIESEL HYDRO-UPGRADING CATALYST FOR MAXIMUM INCREASING ETHYLENE FEEDSTOCK
李慧胜 1徐景东 1艾子龙 1陈伟敏 1徐人威1
作者信息
- 1. 中化泉州石化有限公司,福建泉州 362103;中化泉州能源科技有限责任公司
- 折叠
摘要
为实现减油增化、降低柴汽比、拓宽乙烯原料来源,从而提高炼化企业经济效益,可将直馏柴油加氢改质后用作乙烯原料.考察了催化剂的分子筛含量在不同反应温度下对改质柴油收率与性质的影响.结果表明:随着分子筛含量增加,催化剂总酸量增大,且弱酸占比增加;提高分子筛含量和提高反应温度均有利于降低改质柴油的芳烃指数(BMCI),但其收率也会降低;在收率为50％的情况下,得到的改质柴油BMCI最低可降至8.6,与原料相比降低25.7,是优质的乙烯原料.
Abstract
In order to reduce oil and increase chemical,decrease the diesel/gasoline ratio,broaden the source of ethylene feedstock,and improve the economic benefit of refining and chemical enterprises,the straight-run diesel can be used as ethylene feedstock after hydro-upgrading.The effects of zeolite content in the catalyst on the yield and properties of modified diesel at different reaction temperature were investigated.The results showed that the total acid content and weak acid ratio of the catalyst increased with the increase of zeolite content.The aromatics index(BMCI)of modified diesel decreased with the increase of zeolite content and reaction temperature,but the yield decreased.At the yield of 50％,the BMCI of modified diesel could be reduced to 8.6 which was 25.7 less than that of the raw diesel,making it a high-quality ethylene feedstock.
关键词
直馏柴油/乙烯原料/加氢改质催化剂/分子筛含量/反应温度Key words
straight-run diesel/ethylene feedstock/hydro-upgrading catalyst/zeolite content/reaction temperature引用本文复制引用
出版年
2024
NETL
NSTL
万方数据