Oxidation characteristics of heavy crude oil in ignition process

Q Chemistry

Journal of Advanced Oxidation Technologies Pub Date : 2017-01-01 DOI:10.1515/jaots-2016-0180

Yifan Liu, Kai Liu

引用次数: 0

Abstract

Abstract: The ignition process has a significant influence on the success of in-situ combustion at heavy oil reservoirs. During this process, oxidation reactions between crude oil and injected air mainly occurred. In this paper, a series of oxidation experiments were performed at different reaction temperatures and air-oil ratios to investigate the heavy oil oxidation characteristics at different stages of the ignition process. The results revealed that heat release and production of CO and CO2 were observed during the entire oxidation process, while transformation of heavy components (resins and asphaltenes) in crude oil to light components (saturates and aromatics) and production of H2S occurred at higher temperatures. The heavy oil oxidation in ignition process can be divided into three stages based on physical and chemical characteristics of the reaction, they are low-temperature oxidation, pseudo-high temperature oxidation, and high temperature oxidation, respectively.

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重质原油点火过程的氧化特性

摘要:着火过程对稠油油藏原位燃烧的成功与否有重要影响。在此过程中，原油与注入空气主要发生氧化反应。本文通过在不同反应温度和气油比下的一系列氧化实验，研究了重油在不同点火阶段的氧化特性。结果表明，在整个氧化过程中都发生了CO和CO2的释放和生成，而原油中的重组分(树脂和沥青质)在较高温度下转化为轻组分(饱和烃和芳烃)并产生H2S。根据反应的物理化学特征，重油点火过程中的氧化可分为低温氧化、拟高温氧化和高温氧化三个阶段。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Advanced Oxidation Technologies 化学-物理化学

CiteScore

0.88

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： The Journal of advanced oxidation technologies (AOTs) has been providing an international forum that accepts papers describing basic research and practical applications of these technologies. The Journal has been publishing articles in the form of critical reviews and research papers focused on the science and engineering of AOTs for water, air and soil treatment. Due to the enormous progress in the applications of various chemical and bio-oxidation and reduction processes, the scope of the Journal is now expanded to include submission in these areas so that high quality submission from industry would also be considered for publication. Specifically, the Journal is soliciting submission in the following areas (alphabetical order): -Advanced Oxidation Nanotechnologies -Bio-Oxidation and Reduction Processes -Catalytic Oxidation -Chemical Oxidation and Reduction Processes -Electrochemical Oxidation -Electrohydraulic Discharge, Cavitation & Sonolysis -Electron Beam & Gamma Irradiation -New Photocatalytic Materials and processes -Non-Thermal Plasma -Ozone-based AOTs -Photochemical Degradation Processes -Sub- and Supercritical Water Oxidation -TiO2 Photocatalytic Redox Processes -UV- and Solar Light-based AOTs -Water-Energy (and Food) Nexus of AOTs