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化工进展  2015 

无机盐阴阳离子对稠油水包油型乳状液稳定性的影响

DOI: 10.16085/j.issn.1000-6613.2015.08.034, PP. 3118-3123

Keywords: 两性表面活性剂,有机碱,单价盐,高价盐,乳状液稳定性

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Abstract:

考察了两性/非离子复配表面活性剂浓度、无机/有机复配碱浓度、不同价态正负离子对稠油水包油型乳状液稳定性的影响规律。实验结果表明随着复配表面活性剂浓度的增加,乳状液的分水率先急剧降低后缓慢下降;复配碱对乳状液的稳定性存在最优浓度;无机盐对乳状液的稳定性具有双重作用,低浓度盐提高乳状液的稳定性,高浓度盐降低乳状液的稳定性;一价阳离子对乳状液的稳定性影响顺序为KCl>NaCl>LiCl;二价阳离子对乳状液稳定性的影响程度为MgCl2>CaCl2;一价阴离子对分水率的影响顺序为NaCl>NaBr>NaI;高价阴离子对乳状液稳定性的影响程度为Na2SO4>NaCl>Na3PO4。

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