Reaction Mechanism and Kinetics of Oil2Bearing Sewage Disposal by Supercritical Water Oxidation

doi:10.7652/xjtuxb200601027

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Reaction Mechanism and Kinetics of Oil2Bearing Sewage Disposal by Supercritical Water Oxidation

更新时间：2025-07-09

- Reaction Mechanism and Kinetics of Oil2Bearing Sewage Disposal by Supercritical Water Oxidation
- Vol. 40, Issue 1, Pages: 115-0119(2006)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb200601027
  CLC： X703
- Online First：10 January 2006，
  
  Published：2006
- 稿件说明：
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Reaction Mechanism and Kinetics of Oil2Bearing Sewage Disposal by Supercritical Water Oxidation[J]. 2006, 40(1): 115-0119.
DOI：

Reaction Mechanism and Kinetics of Oil2Bearing Sewage Disposal by Supercritical Water Oxidation[J]. 2006, 40(1): 115-0119. DOI： 10.7652/xjtuxb200601027.

摘要

针对传统的处理方法不能有效地去除油田开采废水中化学需氧量(COD) 的缺点

引入超临 界水氧化法作为含油废水的深度处理技术

研究了含油废水在超临界水中的氧化降解过程

并用自 由基反应机理解释了超临界水氧化反应的机理. 实验结果表明:超临界水氧化法是一种高效快速的 有机废物处理技术

COD 的去除率近90 %;反应温度、停留时间是影响废水COD 去除率的主要因 素

随着反应温度、停留时间的增加

废水COD 去除率显著增大;氧化反应对废水的反应级数为 1162

对氧为0122

反应活化能和频率因子分别为(9212 ±919) kJ ·mol - 1 和(3153 ±3. 33) ×103

所建立的反应动力学模型与实验结果的偏差在±10 %之内. 此外

在分析综述基础上指出了超临界 水氧化处理过程存在的问题及可能的解决方法.

Abstract

The conventional t reatment s are unable to effectively remove t he chemical oxygen demand ( COD) of waste water p roduced during oil ext raction

and t hus

it has seriously t hreatened t he environment and t he normal production of oil2field. An advanced met hod for oilO bearing sewage t reatment

supercritical water oxidation (SCWO)

was proposed. The oxidative degradation was investigated and the process of SCWO was explained wit h mechanism of f ree radical reaction. The experimental result s show t hat SCWO is a high2efficiency t reatment and disposal technique for organic wastes. Temperat ure and residence time serve as t he main influence factors in removing COD of oil2bearing sewage

with which the COD removal rate obviously increases. The reaction of SCWO is 1162 order in sewage COD and 0. 22 order in oxygen

t he f requency factor and activation energy are (3153 -3133) -103 and (92. 2 -919) kJ -mol - 1 under 26 MPa

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