微界面强化混合柴油加氢精制中试研究

摘要基于微界面强化技术,以混合柴油为原料,在催化剂装填量为2 L的上行式固定床装置上开展了柴油加氢精制中试研究。考察了反应压力、反应温度、V(氢)/V(油)和空速等工艺参数及不同类型催化剂对微界面强化柴油加氢精制脱硫脱氮性能的影响。研究结果表明,在工艺条件考察范围内微界面强化加氢脱硫效果明显优于常规上行式反应器,随着生成油中w(硫)的降低,2者差异程度缩小。以w(硫)为1.58%的混合柴油为原料,采用HRC-1催化剂,与常规上行床柴油加氢相比,脱硫率为99.75%时,微界面强化加氢的反应压力可降低3 MPa以上;在反应压力高于5.0 MPa时,微界面强化加氢脱氮率大于98.2%。以w(硫)为1.02%的混合柴油为原料,采用HRC-2和HRC-3级配催化剂,在空速为0.8 h^-1、反应压力5.7 MPa、反应温度365 ℃的条件下,V(氢)/V(油)≥500时,微界面强化加氢生成油中w(硫)等主要指标均可满足国Ⅵ柴油标准要求。该工艺可为中低压下微界面强化混合柴油加氢工业放大提供参考。

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	宋军超
	李治
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	刘金龙
	李立权
	朱建华

关键词：混合柴油加氢精制微界面强化中试上行式反应器

Abstract： Based on micro-interfacial intensification technique, a pilot study of diesel fuel hydrorefining were carried out using blended diesel fuels as feedstocks, by means of an up-flow reactor which packed 2 L catalyst. The effects of process parameters such as reaction pressure, reaction temperature, hydrogen-oil volume ratio, space velocity, etc. and catalyst types on the performances of micro-interface intensified hydrorefining of diesel fuel were investigated. The experimental results showed that the hydrodesulfurization performance of micro-interfacial intensification hydrogenation was significantly better than that in conventional up-flow reactor, the difference of which reduced as the sulfur contents of refined oil declined in the range of investigated process conditions. Compared to diesel hydrorefining by conventional up-flow reactor, using the blended diesel with sulfur content of 1.58% as feedstock oil and HRC-1 as catalyst, the reactor pressure of micro-interfacial intensification hydrorefining could reduce by more than 3 MPa when desulfurization rate was above 99.75%. Using the blended diesel with sulfur content of 1.02% as feedstock oil, and HRC-2 and HRC-3 as grading catalyst, the main quality indicators of refined oils such as sulfur content could satisfy the requirements of China national standard (VI) for automobile diesel fuels under the condition of space velocity of 0.8 h^-1, reaction pressure of 5.7 MPa, reaction temperature of 365 ℃ and the hydrogen-oil volume ratio being greater than or equal to 500. This processing technique could provide a reference for industrial scale-up of micro-interfacial intensification hydrorefining of blended diesel under medium-low reaction pressure.

Keywords： blended diesel fuel hydrorefining micro-interfacial intensification pilot study up-flow reactor

Received 2021-12-15;

Fund:中国石化集团公司课题(119031)。

Corresponding Authors: 宋军超,高级工程师,E-mail:songjc_0123@sina.cn。 Email: songjc_0123@sina.cn

About author: 宋军超(1979-),男,博士、高级工程师,主要从事石油炼制与化工技术研究。

引用本文:

宋军超, 李治, 李鹏程, 陈强, 刘金龙, 李立权, 朱建华.微界面强化混合柴油加氢精制中试研究[J]. 化学工业与工程, 2023,40(4): 50-57

SONG Junchao, LI Zhi, LI Pengcheng, CHEN Qiang, LIU Jinlong, LI Liquan, ZHU Jianhua.Pilot study of blended diesel hydrorefining based on micro-interfacial intensification technique[J]. Chemcial Industry and Engineering, 2023,40(4): 50-57

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