陶瓷膜净化1,4-丁炔二醇过程膜污染模型研究

Study on Membrane Fouling Model in the Process of Purifying 1,4-Butynediol by Ceramic Membrane

摘要: 利用陶瓷膜去除1,4-丁炔二醇(BYD)物料中的不溶物及高分子有机物杂质成分，在不同跨膜压差和切向流速下研究过程膜污染机理，建立相应污染模型。结果表明：BYD物料陶瓷膜净化过程膜污染主要机理为完全堵塞和滤饼过滤，在低切向流速、高跨膜压差下，膜污染较严重，模型符合度高。适当提升切向流速、降低跨膜压差，有利于减轻膜污染，控制通量衰减，保证膜过程稳定。

Abstract: Removal of insoluble substances and high-molecular organic impurities from 1,4-butynediol (BYD) materials by ceramic membrane, the membrane fouling mechanism in the process was studied under different transmembrane pressure differences and tangential flow rates, and the corresponding fouling model was established. The results show that the main membrane fouling mechanisms in the ceramic membrane purification process of BYD materials are complete blocking and cake layer formation. Besides, the membrane fouling is more serious under the conditions of low tangential flow rate and high transmembrane pressure difference, and the model has a high degree of fit. Properly increasing the tangential flow rate and reducing the transmembrane pressure difference is beneficial to alleviate membrane fouling, control flux attenuation, and ensure the stability of the membrane process.