Demulsifier is a surfactant, it can make the emulsion liquid structure is destroyed, in order to achieve the purpose of emulsion in each phase are separated. Crude oil demulsification is refers to the use of demulsifier chemical action will be emulsified oil and water mixed liquid in the oil and water are separated from each other to achieve the purpose of crude oil dehydration and to ensure that the crude oil transportation water standard.

The effective separation of organic phase to aqueous phase, a most simple and effective method is the demulsifier, eliminate emulsification formed with a certain intensity of interfacial emulsion, achieve the separation of the two phases. However, the different organic phase demulsifier demulsification capability is different, the performance of demulsifier directly affects the phase separation effect. Penicillin production process, a very important procedure is with organic solvents, such as butyl acetate from the fermentation broth of penicillin extraction of penicillin, contains protein, carbohydrates, such as mycelia complex due to the fermentation liquid, extraction of organic phase to aqueous phase interface is not clear, a certain strength of the emulsion and the finished product rate is greatly affected. So we must use demulsifiers, eliminate emulsification, achieve rapid and efficient separation phase, high removal rate of COD!