超临界水在重油加工中的研究进展

doi:10.16085/j.issn.1000-6613.2019-0060

化工进展 ›› 2019, Vol. 38 ›› Issue (s1): 77-85.DOI: 10.16085/j.issn.1000-6613.2019-0060

超临界水在重油加工中的研究进展

张婷婷, 陈学峰, 申海平, 达志坚

中国石化石油化工科学研究院, 北京 100083

收稿日期:2019-01-09 修回日期:2019-04-01 出版日期:2019-11-16 发布日期:2019-11-16
通讯作者: 达志坚,教授级高级工程师,博士生导师,研究方向为催化新材料与反应工程的集成。
作者简介:张婷婷(1990-),女,博士,研究方向为重油中沥青质的结构模拟及分离加工。E-mail:zhangtingting.ripp@sinopec.com。
基金资助:
中国石油化工股份有限公司项目（ST18011ST18011-3-2）。

Recent advances in supercritical water treatment of heavy oil

ZHANG Tingting, CHEN Xuefeng, SHEN Haiping, DA Zhijian

SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China

Received:2019-01-09 Revised:2019-04-01 Online:2019-11-16 Published:2019-11-16

摘要/Abstract

摘要： 超临界水作为一种对环境友好并且对轻烃组分具有良好溶解扩散能力的优良溶剂，在重油改质过程中有广泛应用。超临界水的引入不仅可以达到强化传质的目的，对热裂化机理产生影响，而且可以改变反应过程中体系的相结构，促使体系相行为从液-液两相向微乳体系甚至是拟均相转变，为开发新的重油加工工艺提供了可能。本文首先介绍了超临界水的基本性质，着重介绍了超临界水参与下重油的改质机理、反应过程中的裂化动力学以及改质过程中相行为的变化，发现在高水密度、剧烈搅拌和高水油比的条件下重油-超临界水表现出拟均相行为，能够达到改善液收、降低黏度并且减少生焦的目的。最后对超临界水处理重油的发展前景和方向进行了展望。

关键词: 超临界水, 重油, 裂化动力学, 相行为

Abstract: As an environmentally solvent, supercritical water (SCH₂O) has excellent dissolution and diffusion ability for light hydrocarbon components and can be used as a reaction medium in upgrading process of heavy oil. The introduction of SCH₂O can not only strength the mass transfer, but also affect the mechanism of cracking reaction, even promote the phase behavior from liquid-liquid to the condensed emulsion or pseudo single-phase, which provides a possibility for developing new heavy oil processing technology. This paper reviewed the basic property of SCH₂O. Meanwhile, the reforming mechanism of heavy oil upgrading with supercritical water, the cracking kinetics and the transfer of phase behavior during the reaction were emphatically discussed. It was found that the pseudo single-phase of heavy oil and supercritical water can be formed under the conditions of high temperature, high pressure, vigorous stirring and high water-oil ratio which can increase conversion, decrease the viscosity and reduce coke filed. Finally, the SCH₂O development prospect and direction of SCH₂O treatment of heavy oil were outlined.

Key words: supercritical water, heavy oil, cracking kinetics, phase behavior

中图分类号:

TE624

张婷婷, 陈学峰, 申海平, 达志坚. 超临界水在重油加工中的研究进展[J]. 化工进展, 2019, 38(s1): 77-85.

ZHANG Tingting, CHEN Xuefeng, SHEN Haiping, DA Zhijian. Recent advances in supercritical water treatment of heavy oil[J]. Chemical Industry and Engineering Progress, 2019, 38(s1): 77-85.

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超临界水在重油加工中的研究进展

Recent advances in supercritical water treatment of heavy oil

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