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Efficient extraction of centrifugal extraction machine oil and water separation method

by:Deyuan      2020-08-05
Centrifugal separation is the main mechanism of the use of centrifugal force instead of gravity, the implementation of two phase or multiphase separation task. And according to the centrifugal force occurred in different ways. And can be divided into the hydrocyclone technology and spiral pipe, etc. The hydrocyclone technology, which is caused by flow or mechanical rotating fu r not miscibility and centrifugal force of two kinds of medium and the separation of a technology. The main rely on hydrocyclone separation equipment. The centrifugal force is the mainspring of the settlement of particles to produce. 。 。







( Cover: high centrifugal extraction machine extraction method of separation of oil-water)







the centrifugal separation process is the main mechanism of the use of centrifugal force instead of gravity, the implementation of two phase or multiphase separation task. And according to the centrifugal force occurred in different ways. And can be divided into the hydrocyclone technology and spiral pipe, etc. The hydrocyclone technology, which is caused by flow or mechanical rotating fu r not miscibility and centrifugal force of two kinds of medium and the separation of a technology. The main rely on hydrocyclone separation equipment. And centrifugal force is the main power, the settlement of particles to produce the size of the


type centrifugal acceleration of rw squared instead of gravity sedimentation in the acceleration of gravity g to describe the sedimentation characteristics of particles. : it should be noted that the centrifugal acceleration is along the radius direction, and it is: the function, usually, centrifugal separation of oil and water need to be done within the cyclone. Within the cyclone, the fluid movement is a complex 3 d rotation, the rotating movement, also known as spiral movement of the fluid. The multiphase mixture in cyclone separation process, is the process of fluid vortex formation, development and dissipation.
the world using the hydrocyclone for oil water separation arose in the 80 s of the 20th century, the domestic oil fields in the early 1990 s began to introduce the hydrocyclone for oil water separation. Due to the centrifugal separation can greatly improve the particle sedimentation � � c, for a small difference in density between mixture and dispersed particle diameter smaller, all have good separation effect. Figure 4 is a liquid hydrocyclone structure diagram, entrance, column section, mainly by the hydrocyclone cone section, bottom of LiuKou and overflow outlet. Hydrocyclone separation principle and process for: for separation of oil-water mixture through tangential inlet into the cyclone body, form a high-speed rotating flow field, by using the density difference between oil and water, the heavy water were thrown to the side wall, and flowed from bottom LiuKou spiral downward movement, while the light phase oil in the center of the cyclone near nuclear formation oil, from the top of the overflow hole, so as to achieve the purpose of oil-water separation. Hydrocyclone has small volume, light weight, high separation efficiency, the advantages of no moving parts, easy maintenance, is the popularization and application of the onshore and offshore oil field in recent years, the key of oil-water separation devices, but also existing hydrocyclone is sensitive to geometric structure parameters, if improper parameter design, the strong rotational flow field in the cyclone to worsen oil droplets broken emulsification and separation process. At the same time, the hydrocyclone for fluid flow and nature of demand is relatively stable, poor universality and high automatic control weaknesses.


another spiral pipe separation technology dates back to the first demand for efficient heat transfer. But as for its further study, found that the reason of oil and water due to the density difference in spiral tube, in the process of rotating flow with unequal phase distribution characteristic, so the screw can be useful for high water cut oil/water separation. Fundamental is oil-water mixture in the process of spiral pipe flow subjected to centrifugal force makes the denser water phase shift to the outer edge of the spiral tube, the density of the smaller oil phase shift to the inner side of the spiral pipe, flow stability, on the outside of spiral pipe wall digging holes will water release, thus achieve the purpose of oil-water separation ( As shown in figure 5) 。 Spiral tube type separator has a cover an area of an area small, fast processing speed, high separation efficiency advantages, but the spiral pipe separator has a large pressure drop, low capacity of weakness hindered its wide range of industrial applications.


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