Hydrocyclones liquid

Hydrocyclones Liquid-hquid hydrocyclones, like centrifuges, utilize centrifugal force to facilitate the separation of two liquid phases [Hudrocyclones Analysis and Applications, Svarovsky and Thew, eds. (Kluwer, 1992) and Bradley, The Hydrocyclone (Pergamon, 1965)]. Instead of using rotating internals, as in a centrifuge, a hydrocyclone... 

Since the early 1980s, hydrocyclones have been used in produced water treatment to de-oil the water prior to discharge. Hydrocyclones used to de-oil the water are referred to as "hquid-liquid de-oiling" hydrocyclones. Liquid-liquid hydrocyclones are further classified as static or dynamic hydrocyclones. 

L., and Thew M. T., (eds.). Hydrocyclones Analysis and Applications, p. 95, Kliiwer Academic Publishers, Dordrecht, The Netherlands, 1992. Dahlstrom D. A., Fundamental of Solid-Liquid Separation, Mnlar A. L., and Anderson,... 

Tongeniioii Liquid-SoUds Cyclone (Hydrocyclones) Separators... 

Cyclones can be used for the classification of solids, as well as for liquid-solid, and liquid-liquid separations. The design and application of liquid cyclones (hydrocyclones) is discussed in Section 10.4.4. A typical unit is shown in Figure 10.3. 

The capacity of filtration centrifuges is very dependent on the solids concentration in the feed. For example, at 10 per cent feed slurry concentration 9 kg of liquid will be centrifuged for every 1 kg of solids separated whereas with a 50 per cent solids concentration the quantity will be less than 1 kg. For dilute slurries it is well worth considering using some form of pre-concentration such as gravity sedimentation or a hydrocyclone. 

Hydrocyclones are used for solid-liquid separations as well as for solids classification, and liquid-liquid separation. It is a centrifugal device with a stationary wall, the centrifugal force being generated by the liquid motion. The operating principle is basically the same as that... 

Hydrocyclones are used for some liquid-liquid separations, but are not so effective in this application as in separating solids from liquids. 

The solids from a dilute slurry are to be separated using hydrocyclones. The density of the solids is 2900 kg/m3, and liquid is water. A recovery of 95 per cent of particles greater than 100 //m is required. The minimum operating temperature will be 10 °C and the maximum 30 °C. 

Centrifugal force can also be used to separate solid particles from fluids by inducing the fluid to undergo a rotating or spiraling flow pattern in a stationary vessel (e.g., a cyclone) that has no moving parts. Cyclones are widely used to remove small particles from gas streams ( aerocyclones ) and suspended solids from liquid streams ( hydrocyclones ). 

Svarovsky L. Hydrocyclones. In L Svarvosky, ed. Solid-Liquid Separation. 3td ed. New York Butterworths, 1990. 

The down-comer from the gas/liquid separator that collects the liquid slurry product is connected to the suction side of a moyno-type (Liberty progressive cavity) pump. The pump discharge is connected to a primary separation device (an inertial separator similar to a hydrocyclone). Since the slurry pump is a positive displacement device (i.e., no slurry slippage inside the pump), the total flow... 

In this section, the general design of the hydrocyclone and its application in the grading of solid particles, or their separation from a liquid, is considered and then the special features required in hydrocyclones required for the separation of immiscible liquids will be addressed. The use of cyclones for separating suspended particles from gases is discussed in Section 1.6.2. 

Near the top of the hydrocyclone there will be some short-circuiting of the flow between the inlet and the overflow, although the effects are reduced as a result of the formation of circulating eddies, often referred to as the mantle, which tend to act as a barrier. Within the secondary vortex the pressure is low and there is a depression in the liquid surface in the region of the axis. Frequently a gas core is formed, and any gas dispersed in the form of fine bubbles, or coming out of solution, tends to migrate to this core. In pressurised systems, the gas core may be very much reduced in size, and sometimes completely eliminated. 

Hydrocyclones are used for removing entrained gas bubbles from liquids, and the extracted gas collects in the gas-core of the secondary vortex before leaving through the vortex finder. Nebrensky(43) points out that because of the low pressure in the region close to the axis, they will also remove dissolved gases(43). 

Rhodes, N., Pericleous, K. A., and Drake, S. N. Solid Liquid Flow 1 (1989) 35. The prediction of hydrocyclone performance with a mathematical model. 

ZANKER, A. In Separation Techniques Vol 2 Gas Liquid Solid Systems (McGraw-Hill, 1980), p. 178. Hydrocyclones dimensions and performance. 

Hydrocyclones were originally designed to promote solid-liquid separations, but nowadays they are also used for solid-solid, liquid-liquid and gas-liquid separations. Possible new applications, such as cell separation, are being devel-... 

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