Spinning Disc Cleaning of Skimmed Milk and Whey Protein Deposits
Spinning Disc Cleaning of Skimmed Milk and Whey Protein Deposits
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脱脂奶和乳清蛋白沉积物的转盘清洁
DOI：
10.1205/096030802321154844
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发表时间：
2002
影响因子：
4.6
通讯作者：
R. Thorpe
中科院分区：
文献类型：
--
作者：
K. Morison;R. Thorpe
不锈钢圆盘在换热过程中被脱脂牛奶和乳清蛋白污染。然后使用旋转圆盘技术在受控传质条件下用氢氧化钠水溶液清洗圆盘。对清洗速率进行了测量，结果表明清洗速率与温度、氢氧化钠浓度和雷诺数有关。在较高浓度下，观察到两种截然不同的清洗速率。对于70°C的牛奶沉淀物的清洗，最佳氢氧化钠浓度约为1.0wt%，而在50℃时，最佳的氢氧化钠浓度为0.5wt%。文献中提出的清洗机制已得到证实和推广。
Stainless steel discs were fouled during heat transfer by skimmed milk and whey protein. The discs were then cleaned with aqueous sodium hydroxide solutions under controlled mass transfer conditions using spinning disc techniques. Cleaning rates were measured with good consistency and it was confirmed that the rate of cleaning depended on the temperature, sodium hydroxide concentration and Reynolds number. At higher concentrations two distinct rates of cleaning were observed. For milk deposit cleaning at 70°C an optimal sodium hydroxide concentration of about 1.0 wt% was found, while at 50°C an optimum of 0.5 wt% was confirmed. Mechanisms of cleaning proposed in the literature have been confirmed and extended.