| 破乳-酸化法处理直馏柴油精制废碱液 |
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| 引用本文： | 张焕祯,沈洪艳,李淑芳,王振川.破乳-酸化法处理直馏柴油精制废碱液[J].石油化工,2002,31(8):629-632. |
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| 作者姓名： | 张焕祯 沈洪艳 李淑芳 王振川 |
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| 作者单位： | 1. 中国地质大学,武汉,工程学院,湖北,武汉,430074
2. 河北科技大学环境科学与工程学院,河北,石家庄,050018 |
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| 基金项目： | 中国石油化工集团公司资助项目(97024). |
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| 摘 要： | 采用破乳 -酸化法对直馏柴油精制废碱液进行处理 ,筛选出最佳的破乳条件和酸化终点。实验结果表明 ,采用破乳剂或热力破乳 -酸化法预处理直馏柴油精制废碱液是一种有效的预处理方法。经该方法处理后的废碱液化学需氧量 (COD)下降率可达 93 4 %,除油率为 87%,副产物硫酸钠能得到最大限度地回收利用。同时 ,该方法设备简单 ,处理费用低廉 ,易于实现工业化。
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| 关 键 词： | 废碱液 酸化处理 石油类 环烷酸 破乳剂法 |
| 文章编号： | 1000-8144(2002)08-0629-04 |
| 修稿时间： | 2001年11月16 |
Pre-Treatment of Spent Alkali Liquor from Diesel Oil Refining by Demulsification-Acidification |
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| ZHANG Huan-zhen ,SHEN Hong-yan ,LI Shu-fang ,WANG Zhen-chuan.Pre-Treatment of Spent Alkali Liquor from Diesel Oil Refining by Demulsification-Acidification[J].Petrochemical Technology,2002,31(8):629-632. |
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| Authors: | ZHANG Huan-zhen SHEN Hong-yan LI Shu-fang WANG Zhen-chuan |
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| Affiliation: | ZHANG Huan-zhen 1,SHEN Hong-yan 2,LI Shu-fang 2,WANG Zhen-chuan 2 |
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| Abstract: | Spent alkaline liquor from diesel oil refining was treated with the method of demulsification followed by acidification.The optimal demulsification conditions and the end point of acidification were determined.Demulsification could be achieved either by standing for 24 hours at 90～100 ℃,or by employing the demulsifier T-1 with the optimum concentration of 120 mg/L.After demulsification,the spent alkaline liquor was acidified with concentrated sulfuric acid to a pH value of 2.5～3.0 to ensure the best recovery of naphthenic acid and crystallization of sodium sulfate.The COD and oil removal rate for the treated waste liquor were 93.4% and 87% respectively.Moreover,the equipment for the treatment is simple,and the cost is low,both facilitating the industrialization of the process. |
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| Keywords: | spent alkali liquor acidification oil naphthenic acid demulsification method |
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