关键词: 稠油垢, 表面活性剂, 弱酸性水基清洗剂, 正交实验, 去污力, 稠油垢, 表面活性剂, 弱酸性水基清洗剂, 正交实验, 去污力

Abstract: A mild water-based cleaning agent with strong detergency on heavy oil foulant was successfully developed by choosing cheap，easily accessible and biodegradable surfactants as basic ingredients and tap water as solvent. Its key ingredients and the corresponding percentages were determined by orthogonal experiments，the percentage of the main active substance and the concentration of the as-prepared cleaning agent are as follows：sodium diethylhexylsulfosuccinate 4.4%，sodium alcohol ether sulphate 4.4%，alkyl polyglucoside 6.4%，cocoamidopropylbetaine 7.5%，and its detergency rate can reach 98.2% at 25℃. It was concluded that the comprehensive cleaning performance of the as-prepared cleaning agent is better than that of the commercial brand detergent 1 and the commercial brand detergent 2. Moreover，its pH is only 6.5 showing very weak acidity which is different from the traditional cleaning agent showing basic，and thus provides a new idea for the development of novel water-based cleaning agent with strong detergency on heavy oil foulant.

Key words: heavy oil foulant, surfactant, weakly acidic water-based cleaning agent, orthogonal experiment, detergency rate, heavy oil foulant, surfactant, weakly acidic water-based cleaning agent, orthogonal experiment, detergency rate