Liquid-liquid hydro cyclone separating method is a modern oil contaminated sewage disposal method. Now the special function of pressure drop ratio in liquid-liquid separation, e.g. oil-water separation, is introduced by analyzing amounts of ‘’ indoor experiment data. It dominants the application prospect of liquid hydro cyclone. For that reason, the relationships of pressure drop ratio versus total flow rate, pressure drop ratio versus split ratio, and pressure drop ratio versus the diameter of up flow outlet and their effects are researched.


Although the hydrocyclone separating method originated hundred years ago, Its theory was not very perfect, but its application technology has changed with each passing day since recent years. Authors believe that the quantity of pressure drop ratio C would dominant the application prospect of liquid-liquid hydro cyclone under most circumstances, according to the practice m oilfield. About solid-liquid hydro cyclone, we would increase its separation efficiency by measuring its inlet pressure; but the case of liquid-liquid hydrocyclone IS different. More higher inlet pressure means more higher inlet velocity, which would cause liquid drops to break and increase separating difficulties. Furthermore, oilfield application requires as little additional power consumption as possible. Usually, the given pressure is under 0.5 MPa, which means that we must try best to reduce the energy consumption of hydrocyclone Itself, so that the up flow could have enough pressure to ensure the draining of water contaminated oil, and the down flow ensure the draining of oil contaminated water.


Relationship Between Inlet Flow rate Qi and Pressure Drop MJd But more higher pressure drop would cause the necessary inlet pressure to rise, which means the additional power consumption is produced. So, we hope that the pressure drop is as little as possible while the disposal demands can be satisfied.

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