超声波协同加强剂对重油低温裂解降黏过程的影响

发布时间：2018-02-04 06:33

本文关键词： 重油超声波加强剂协同效应降黏　出处：《石油炼制与化工》2017年04期 　论文类型：期刊论文

【摘要】：以重油为研究对象,在不加水的条件下,利用超声波协同加强剂裂解降黏,分析了重油处理前后四组分组成的变化情况。考察了加强剂浓度、处理时间和超声功率对重油降黏效果的影响,分析了处理前后重油黏度和流动性能的变化,并对重油黏度恢复情况进行了测试分析,同时采用红外光谱和气相色谱分析了处理前后重油的结构变化。结果表明:加强剂浓度对降黏效果影响最大,其次为处理时间和超声功率;加强剂浓度越大,降黏效果越好;随处理时间和超声功率的增大,降黏率先增加后略微下降;超声波与加强剂具有协同效应,使重油中长链大分子、芳环和杂原子发生断链、加氢、开环等系列反应,能够在常温条件下降低重油黏度,改善流动性能,显著提高重油品质。
[Abstract]:Taking heavy oil as the research object, the changes of the composition of the four components before and after the treatment of heavy oil were analyzed by using ultrasonic wave to cooperate with the cracking agent to reduce viscosity, and the concentration of the reinforcing agent was investigated. The effects of treatment time and ultrasonic power on viscosity reduction of heavy oil were analyzed. The changes of viscosity and fluidity of heavy oil before and after treatment were analyzed, and the viscosity recovery of heavy oil was tested and analyzed. At the same time, the structural changes of heavy oil before and after treatment were analyzed by infrared spectroscopy and gas chromatography. The results showed that the concentration of reinforcing agent had the greatest effect on viscosity reduction, followed by treatment time and ultrasonic power. The higher the concentration of reinforcing agent, the better the viscosity reduction effect; With the increase of the treatment time and ultrasonic power, the viscosity drop increased first and then decreased slightly. Ultrasonic wave has synergistic effect with intensifier, which causes chain breaking, hydrogenation and ring opening reaction of long chain macromolecule, aromatic ring and hetero atom in heavy oil, which can reduce the viscosity of heavy oil and improve the fluidity of heavy oil at room temperature. Improve the quality of heavy oil significantly.
【作者单位】：常州大学机械工程学院;常州大学石油化工学院;中国石化塔河炼化有限责任公司;
【基金】：国家国际科技合作专项(2011DFR60750)
【分类号】：TE624
【正文快照】： 近年来,随着油田的深度开采,原油重质化、劣质化趋势加重[1],表现为原油密度和黏度大,金属含量高等特点,导致重油在开采、运输和加工过程中存在极大困难。为了降低重油黏度,解决开采和管道输送中的问题,国内外开发出一系列降黏方法[2]。目前,常见的降黏技术有掺稀油降黏、加热

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