Two-phase mass transfer of multi-benzene gemini quaternary ammonium salt in oil-water

Guanghua ZHANG; Qiuchen DONG; Jing LIU

doi:10.11949/j.issn.0438-1157.20181401

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Two-phase mass transfer of multi-benzene gemini quaternary ammonium salt in oil-water

更新时间：2020-06-24

- Two-phase mass transfer of multi-benzene gemini quaternary ammonium salt in oil-water
- CIESC Journal Issue S1, Pages: 61-68(2019)
- 作者机构：
  
  陕西科技大学陕西省轻化工助剂重点实验室，陕西西安 710021
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181401
  CLC： O 647
- Received：22 November 2018，
  
  Revised：2019-01-21，
- 稿件说明：
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张光华, 董秋辰, 刘晶. 多苯环双子季铵盐在油水两相中的传质性能[J]. 化工学报, 2019, 70(S1): 61-68

ZHANG Guanghua, DONG Qiuchen, LIU Jing. Two-phase mass transfer of multi-benzene gemini quaternary ammonium salt in oil-water[J]. CIESC Journal, 2019, 70(S1): 61-68
张光华, 董秋辰, 刘晶. 多苯环双子季铵盐在油水两相中的传质性能[J]. 化工学报, 2019, 70(S1): 61-68 DOI： 10.11949/j.issn.0438-1157.20181401.

ZHANG Guanghua, DONG Qiuchen, LIU Jing. Two-phase mass transfer of multi-benzene gemini quaternary ammonium salt in oil-water[J]. CIESC Journal, 2019, 70(S1): 61-68 DOI： 10.11949/j.issn.0438-1157.20181401.

摘要

采用紫外分光光度法测定了2种联结基不同的阳离子双子季铵盐缓蚀剂(bi-PDTBP和PDTBP)在油水两相中的分配系数，通过分配系数及有关理论，计算出2种阳离子双子季铵盐缓蚀剂在分配时的热力学参数，并系统考察了温度、油水比例、盐浓度、缓蚀剂浓度和时间对缓蚀剂在油水介质中迁移的影响；最后通过失重法研究了2种缓蚀剂在1 mol/L盐酸中对Q235钢的缓蚀性能。结果表明：温度和缓蚀剂浓度可促进缓蚀剂在油水介质中的分配，而盐浓度和油水比例会阻碍缓蚀剂在油水介质中的分配；另外，随着2种缓蚀剂浓度的增加，缓蚀效率逐渐提高，且bi-PDTBP在高温下的缓蚀性能优于PDTBP。

Abstract

Distribution coefficients of two kinds of cationic gemini quaternary ammonium salt corrosion inhibitors (bi-PDTBP and PDTBP) between water and oil were measured by ultraviolet spectrophotometry

from which thermodynamic parameters were calculated. Effects of temperature

oil-water ratio

salt content

inhibitor concentration and time on the mass transfer between water and oil were systematically investigated. Finally

the corrosion inhibition performance of two corrosion inhibitors for Q235 steel in 1 mol/L hydrochloric acid was studied by weight loss experiments. Results showed that temperature and inhibitor concentration can promote the mass transfer of corrosion inhibitors between oil-water two phases

while oil-water ratio and salt concentration can hinder the mass transfer of corrosion inhibitors between oil-water two phases. The mass transfer process is spontaneous and endothermic reaction accompanied by an increase in entropy. In addition

as the concentration of two inhibitors increases

the corrosion inhibition efficiency increases gradually

and bi-PDTBP showed greater corrosion inhibition effect than PDTBP at high temperature.

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references

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