What is the specific relationship between the cloud point and HLB value of reverse demulsifier?
How to use reverse demulsifier?
How to use reverse demulsifier to treat oily wastewater?
Let's learn the cloud point and HLB value (hydrophilic-lipophilic balance value) of reverse demulsifier relationship, mainly manifested as the following points:
1.The influence of HLB value on cloud point：
Under normal circumstances, reverse demulsifier function with lower HLB values have stronger lipophilicity and relatively poor solubility in water. As the temperature rises, such demulsifiers are more likely to precipitate from water, resulting in a lower cloud point. On the contrary, reverse demulsifier function with higher HLB values have stronger hydrophilicity and better solubility in water. A higher temperature is required to make them precipitate from water, so the cloud point is relatively high. Special case However, this relationship is not absolute. Some reverse demulsifier application with special structures may deviate from this general rule. For example, although some demulsifiers have a high HLB value, due to special intermolecular interactions or the presence of specific functional groups, their cloud points may not be as high as expected.
2.The reflection of cloud point on HLB value Rough judgment Knowing the cloud point of a reverse demulsifier can to a certain extent infer the range of reverse demulsifier function of HLB value. A higher cloud point usually implies that the demulsifier has higher hydrophilicity, and the corresponding HLB value may also be higher; while a lower cloud point may indicate that the reverse demulsifier application has stronger lipophilicity and a lower HLB value. But this inference is only a rough judgment and cannot be used as an accurate method to determine the HLB value.
In practical reverse demulsifier application, the cloud point can be used as an auxiliary reference factor for selecting reverse demulsifier function. Combined with other performance indicators and actual reverse demulsifier application requirements, reverse demulsifier with a suitable HLB value range can be preliminarily screened through the cloud point.
In conclusion, there is a certain correlation between the cloud point and HLB value of reverse demulsifier, but this relationship is affected by many factors, and one parameter cannot be accurately determined by simply using another parameter.
In practical reverse demulsifier application, multiple factors need to be considered comprehensively to select a suitable reverse demulsifier.