Chemical Industry and Engineering Progress ›› 2024, Vol. 43 ›› Issue (4): 2153-2160.DOI: 10.16085/j.issn.1000-6613.2023-0559

• Resources and environmental engineering • Previous Articles    

Transfer behaviors of dissolved organic matter along stripping purified water reusing crude oil electric desalting process

ZHANG Rui(), KOU Yue, SUN He, WANG Chenyu, LI Zhuoyu, WANG Qinghong, CHEN Chunmao()   

  1. State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum (Beijing), Beijing 102249, China
  • Received:2023-04-09 Revised:2023-06-29 Online:2024-05-13 Published:2024-04-15
  • Contact: CHEN Chunmao

汽提净化水回用原油电脱盐过程的溶解性有机物转移特征

张瑞(), 寇悦, 孙鹤, 王辰予, 李琢宇, 王庆宏, 陈春茂()   

  1. 中国石油大学(北京)化学工程与环境学院,重质油全国重点实验室,北京 102249
  • 通讯作者: 陈春茂
  • 作者简介:张瑞(1999—),女,博士研究生,研究方向为环境分析化学。E-mail:zhangrui1022ray@163.com
  • 基金资助:
    国家自然科学基金面上项目(22278436)

Abstract:

The reusing of stripping purified water (SPW) in crude oil electric desalting process (EDP) is an efficient water-saving measure for petroleum refineries. In this study, a comprehensive analysis based on gas chromatography-mass spectrometry (GC-MS) and orbitrap mass spectrometry (Orbitrap MS) was established, and the transfer behaviors of dissolved organic matter (DOM) along SPW reusing crude oil EDP were investigated at the micro-level. During EDP, 13 types of aromatic amines, 34 types of nitrogen-containing heterocycles, 13 types of medium-/long-chain alkylphenols and 1 type of ether in SPW were transferred into oil phase. The quality of crude oil was not deteriorated while the yield slightly increased, and the total organic load in electric desalting wastewater (EDW) reduced by 50%. Simultaneously, 8 types of naphthenic acids, 7 types of oxygen-containing heterocycles, 3 types of short-chain alkylphenols, 504 types of O2, O4, O3S1, N1O3 species with low unsaturation and 186 types of O4S1, N1O2 species with high unsaturation originally in crude oil were transferred into water phase, increasing the complexity of DOM constituents and acute bio-toxicity of EDW. The results enhanced insights to highly polluted point-source wastewaters and improved the management of petroleum refineries.

Key words: stripping purified water, crude oil electric desalting, dissolved organic matter, transfer behaviors, orbitrap mass spectrometry

摘要:

汽提净化水回用原油电脱盐是炼化企业重要的节水措施。本研究基于气相色谱-质谱和静电场轨道阱高分辨质谱组合分析,从微观层次上探究了汽提净化水回用电脱盐过程的溶解性有机物转移特征。电脱盐过程中,汽提净化水有13种芳香胺类、34种含氮杂环类、13种中长链烷基酚类和1种醚类化合物转移到油相,对油品品质影响轻微,对油品收率有所促进,同时可将电脱盐污水的有机负荷总量降低约50%。原油中的8种环烷酸类、7种含氧杂环类、3种短链烷基酚类、504种低不饱和度的O2、O4、O3S1和N1O3类以及186种高不饱和度的O4S1和N1O2类化合物转移到水相,使得电脱盐污水的有机污染组成更为复杂,急性生物毒性更强。本研究对于掌握高浓度点源污水的水质特性、提高炼化企业污水管控水平具有指导意义。

关键词: 汽提净化水, 原油电脱盐, 溶解性有机物, 转移特征, 静电场轨道阱高分辨质谱

CLC Number: 

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