十二烷基二甲基苄基氯化铵对原油碱洗脱酸反应的影响

发布时间：2018-04-29 21:43

  本文选题：高酸原油 + 碱洗　； 参考：《现代化工》2017年03期

【摘要】：针对高酸原油碱洗脱酸过程中反应速率较慢且乳化严重的问题,以十二烷基二甲基苄基氯化铵(DDBAC)为相转移催化剂和乳化抑制剂,利用电导率、Zeta电位和全功能稳定性分析等方法对原油与NaOH溶液之间反应速率和乳状液稳定性进行了研究。结果表明,DDBAC可以显著提高原油与碱液反应速率并且有效抑制乳化。在25℃,DDBAC质量浓度为400 mg/L时,反应速率提高了15倍;在反应温度为50℃,NaOH质量分数为4%时,随着DDBAC质量浓度的增加,碱液含油量和Zeta电位均显著降低,当DDBAC质量浓度为300 mg/L时,4%NaOH溶液油含量降至79.69 mg/L,减少51.79%,Zeta电位从-38.087 mV降至-27.97 mV。原油酸值经二级碱洗脱酸后可以降至0.41 mg(KOH)/g。
[Abstract]:In order to solve the problem of slow reaction rate and serious emulsification during alkali washing and deacidification of high acid crude oil, dodecyl dimethyl benzyl ammonium chloride (DDBAC) was used as phase transfer catalyst and emulsifying inhibitor. The rate of reaction between crude oil and NaOH solution and the stability of emulsion were studied by means of conductivity and Zeta potential and whole function stability analysis. The results show that DDBAC can significantly increase the reaction rate between crude oil and alkali solution and effectively inhibit emulsification. When the mass concentration of DDBAC at 25 鈩，

本文编号：1821688