MES表面活性剂的工业化精制工艺

doi:10.3969/j.issn.1673-5854.2020.05.005

Abstract

Abstract:

α-sulfofatty acid methyl ester sodium salt(MES) with 70% active mass fraction product was added into 50-55 ℃ low boiling organic solvent of water soluble in heat and molten state. After cooling, crystallization, filtration and drying, high purity MES powder products were obtained. The experiment obtained the best optimum purification and refining process by investigating the low boiling organic solvent type of water soluble, feed quality ratio of raw materials and solvent, cooling temperature and crystallization time. And the optimum conditions were methanol as solvent, the mass ratio of MES and the feed 1:3, the cooling temperature 5 ℃, the crystallization time 120 min, the drying time 60 min, the drying temperature 45 ℃ and the solvent was used for three times and then distilled. Under these conditions, the recovery rate of the prepared MES powder product was greater than 98%, and the active mass fraction was greater than 93.0%. After the product was sealed and stored at 40 ℃ for 12 h, the sieving rate of sieve size of 0.850 mm reached 100%.

Key words: MES, surfactant, refine, powdering

CLC Number:

Guoqiang SONG,Huan LI,Yinmei CAO,Long TANG. Industrial Refining Process of MES Surfactant[J]. Biomass Chemical Engineering, 2020, 54(5): 33-36.

Figures/Tables 3

References 13

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项目items		回收率/% recovery rate	活性物质量分数/% active mass fraction	过筛率/% sieving rate
溶剂种类 solvent type	甲醇methanol	98.99	93.8	100
	乙醇ethanol	98.86	94.3	100
	异丙醇isopropanol	97.23	93.9	98
	丙酮acetone	96.89	94.0	95
	甲乙酮methyl ethyl ketone	97.75	93.5	96
甲醇用量 feed quality ratio	10 kg	97.46	91.9	99
	15 kg	98.99	93.8	100
	20 kg	99.07	94.0	100
	25 kg	99.13	94.2	100
冷却温度 cooling temperature	-5 ℃	94.05	90.7	97
	0 ℃	97.08	93.4	98
	5 ℃	98.99	93.8	100
	10 ℃	96.45	94.1	98
结晶时间 crystallization time	60 min	96.19	92.7	98
	90 min	96.98	93.0	99
	120 min	98.99	93.8	100
	150 min	99.03	92.9	98
	180 min	99.17	91.5	95

使用次数/次 number of use/time	回收率/% recovery rate	活性物质量分数/% active mass fraction	过筛率/% sieving rate
1	98.99	93.8	100
2	98.79	93.4	100
3	97.92	92.8	97

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Industrial Refining Process of MES Surfactant

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