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Hydrocyclones pp 329–358Cite as

Separation of Liquid-Liquid Solids Mixtures in a Hydrocyclone -Coalescer System

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Part of the book series: Fluid Mechanics and Its Applications ((FMIA,volume 12))

Summary

The hydrocyclone design presented at 3rd Int.Conference on Hydrocyclones in paper G-2 has been undergoing further thorough testing with the main aim of better optimization of its design and operational parameters.

Particular attention was concentrated on the usefulness of this apparatus in the process of separation emulsified oil-in water mixtures containing as well solid particles especially of mineral origin. The concentration level of oil during test varied from 0.1 to 3% (by mass) and solids from 0.01 do 10 g/dm3.

The paper describes our continuing programme on the hydrocyclone type for light dispersions and solids separation where the influence of flow rate on separation efficiency as a function of inlet, outlet areas, length of cylindrical and conical part as well as pressure was examined.

Part of the experiments was also devoted to trials on separation of heavy liquid dispersions to check the suitability of our hydrocyclone as well for this purpose by only modifying the apertures but still retaining the basic structure of the hydrocyclone.Further research was carried out by connecting the hydrocyclone in series with special construction coalescers of ring shaped needle structures Cpatented)

The obtained global effects are described in the paper indicating very promising results to satisfy stringent IMO requirements on prevention of marine pollution by oil.

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Abbreviations

CB :

coefficient of hydrocyclone orientation

D:

hydrocyclone major diameter

d50 :

mean drop diameter, classifying cut size

Li :

total hydrocyclone length

li :

length of hydrocyclone conical part

lc :

length of hydrocyclone cylindrical part

Δp:

pressure drops, Δp = pe − po

Pe :

inlet pressure

Po :

pressure at hydrocyclone overflow

do :

overflow nozzle diameter

du :

underflow nozzle diameter

de :

feed diameter

φ:

cone angle

ΔH:

head differential

He :

total head at the inlet

Ho :

total head at the overflow

n,m:

exponents in equation (2) and (4)

I:

split ratio \(\frac{{{V_o}}}{{{V_u}}}\)

Vu :

underflow volume flow rate

Vo :

overflow volume flow rate

Ve :

inlet volume flow rate

lo :

vortex finder length

Δρ a :

differential density between continuous and dispersed material

μ z :

dynamic viscosity Ceffective D of emulsion

v :

kinematic viscosity

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Author information

Authors and Affiliations

  1. Institute of Chemical Eng. and Ph. Chemistry, Technical University, Cracow, Poland

    S. Bednarski

  2. Marine Engineering Department, Maritime University, Szczecin, Poland

    J. Listewnik

Authors
  1. S. Bednarski
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  2. J. Listewnik
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Editor information

Editors and Affiliations

  1. University of Bradford, UK

    L. Svarovsky

  2. University of Southampton, UK

    M. T. Thew

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© 1992 Springer Science+Business Media Dordrecht

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Bednarski, S., Listewnik, J. (1992). Separation of Liquid-Liquid Solids Mixtures in a Hydrocyclone -Coalescer System. In: Svarovsky, L., Thew, M.T. (eds) Hydrocyclones. Fluid Mechanics and Its Applications, vol 12. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-7981-0_21

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  • DOI: https://doi.org/10.1007/978-94-015-7981-0_21

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-4180-7

  • Online ISBN: 978-94-015-7981-0

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