Skip to main content
Article thumbnail
Location of Repository

Investigating gas/solid separation using a novel compact inline separator

By Tyrone White

Abstract

Identified as an important issue for marginal fields, the removal of sand from hydrocarbon fluids has been investigated. A review of existing sand separation equipment has recognized a need for a new separator which will satisfy the design and performance requirements necessary for protecting offshore processing equipment. This thesis details the work and analysis undertaken which has contributed towards the design and development of a new offshore gas/solid separator. A critique of different separation techniques has identified axial flow cyclone (AFC) separators as a suitable separator design for offshore desanding applications. After reviewing existing models which simulate the performance of AFC separators a simple classification table has been developed. Using the conclusions of this review as a starting platform, a methodology for developing a new computational fluid dynamics (CFD) performance model for the new separator was proposed. Experimental work undertaken at the CALtec laboratories and the BG plc (formerly British Gas Research and Technology) Low Thornley test facilities are presented. The results obtained have been used to analysis the performance of difference separator internal designs. In addition, the results have been used to evaluate the robustness of existing AFC performance models and validate the new CFD model. For the investigated operational duties, the new CFD model has been shown to consistently under-predict the collection efficiency, whereas the other AFC models over-predict. From a design point of view, a model which under-predicts the overall collection efficiency will result in the over-design of the separator for a particular operating duty. Therefore, the use of such a model will ensure the design of a separator which will offer greater than expected levels of protection of downstream equipment from erosion wear

Publisher: Cranfield University
Year: 1999
OAI identifier: oai:dspace.lib.cranfield.ac.uk:1826/4615
Provided by: Cranfield CERES

Suggested articles

Citations

  1. (1986). A doi
  2. A 1988, A new approach to the design ofgas-liquid separatorsfor the oil industry,
  3. (1993). A cheap and effective alternativefor particle seedingfluid in LDA -applications', Experiments in Fluids, doi
  4. (1980). A method of calculating the effectiveness of separating particles in a uni-flow cyclone'
  5. (1984). A new axial flow cascade cyclone for size classification of airborne particulate
  6. (1989). A new collection theory of cyclone separators' doi
  7. (1986). A review of separation equipment - Volume 1: Literature Review'.
  8. (1952). A study of the motion of solid particles in a hydraulic cyclone',
  9. (1961). An experimental study of the vortex in the cyclone separator', Trans. doi
  10. (1995). An introduction to computation fluid dynamics,
  11. (1992). Application of a novel in-line free vortex separator used for gas liquid separation within a two-phase pumping system', doi
  12. (1991). Burstware Instruction
  13. (1994). Collection efficiency and pressure drop for a rotary-flow cylone', doi
  14. (1974). Combustion in swirling flows: A review', doi
  15. (1996). Computational fluid dynamics (CFD) and empirical modelling of the performance of a number of cyclone samplers', doi
  16. (1974). Computational Fluid Dynamics Services (CFDS) 1996, CFX-F3D Version 4.2 User Manual,
  17. (1976). Computational Fluid Dynamics, doi
  18. (1988). Construction and testing of an axial flow cyclone pre-separator', doi
  19. (1956). Cyclone dust collectors, American Petroleum Institute,
  20. (1973). Cyclone performance and design', doi
  21. (1956). Cyclone separator calculation and design based upon recent investigations'
  22. (1984). Design of cyclone separators',
  23. (1955). Design of Experiments',
  24. (1994). Development and testing of the Well Commingling systein - Final Report',
  25. (1984). Enhancement of the SIMPLE method for predicting incompressible fluid flows', doi
  26. (1934). Equations of motion of dust particles. (in Russian, English translation), Otoplenie i ventilyatsiya.
  27. (1993). Equipment selection for solid gas separation',
  28. (1995). Evidence of the "natural vortex length" and its effect on the separation efficiency of gas cyclones, doi
  29. (1986). Experimental design', doi
  30. (1996). Experimental investigation and computer simulation of an improved cyclone dust separator,
  31. (1940). Flow pattern , and pressure drop in cyclone dust collectors -cyclone without inlet vane', doi
  32. (1939). Flow pattern and pressure drop in cyclone dust collectors -cyclone', doi
  33. (1987). Flow Visualisation, doi
  34. (1971). Flowing gas solids suspensions, doi
  35. (1948). Fundamentals of cyclone design and operation'
  36. (1984). Hydrocyclones, doi
  37. (1957). Investigation of a vortex air cleaner', The engineer,
  38. (1949). Investigations into cyclone dust collectors', doi
  39. (1994). ISO 12103-1: 1997, 'Road vehicles - Test dust for filter evaluation - Part 1: Arizona test dust', London Cabrejos doi
  40. (1996). Laser Measurement Techniques Short Course Notes, UMIST
  41. (1984). Mathematical modelling of gas-particle flows in cyclone separators,
  42. (1989). Measurements of particle motion in a turbulent pipe flow using axial-viewing technique. ',
  43. (1963). Mechanical equipmentfor removing grit and dustfrom gases, The British Coal Utilisation Research Association,
  44. (1989). Mechanics of Fluids, Sixth Edition, doi
  45. (1990). Mineral physics course notes,
  46. (1987). Modelling a "reverse flow" cyclone' (in Dutch, English translation),
  47. (1990). Modelling of particle/ wall collisions in confined gasparticle flows',
  48. (1993). Modelling turbulent flow within a small diameter hydrocyclone', doi
  49. (1977). New design approach boosts cyclone efficiency',
  50. (1983). Numerical study of the turbulent flow past an airfoil with trailing edge separation', doi
  51. (1979). Observation of the oscillatory behaviour of a confined ring vortex', doi
  52. (1992). Observations of oscillatory motion in certain swirling flows', doi
  53. (1985). Particle separation efficiency of uni-flow cyclones',
  54. (1961). Particle technology: The little things in life',
  55. (1979). Particle trajectories in two phase flow systems', doi
  56. (1984). Perry's Chemical Engineers' Handbook, Sixth Edition, McGraw-Hill chemical engineering series
  57. (1996). Personal Communications Loh, W. L unpublished, 'Inline free vortex separator development data', CALtec,
  58. (1996). Personal Communications Sarshar, doi
  59. (1988). Prediction of particle removal in cyclone separators',
  60. (1949). Pressure drop in cyclone separators, Engineering, doi
  61. (1976). Principles and practices of laser Doppler anemometry, doi
  62. (1993). Probability and statistics for engineers and scientists, doi
  63. (1995). Quality by design - Taguchi techniquesfor industrial experimentation,
  64. (1984). Reducing head or pressure losses across a hydrocyclone', Filtration and Separation Journal, May/June,
  65. (1984). Reis" Velocity Purge Mass Mass Total Overall Collection Mean Overall lntwM (CI) Cl a 95% prasure Temperature Humidity in Flowrate Purge Man mass COIISCbDn 095% / Mean Drop Effickincy, Efficiency Note.
  66. (1972). Removal of dust from gases', Gas Purification Processes from Air Pollution Control,
  67. (1980). Report on investigations on particle movement in straight horizontal tubes, particle/wall collision and erosion of tubes and tube bends',
  68. (1996). Results from the Heidran field case-hole gravel packs', doi
  69. (1984). Separation of particles from air and gases, Volume ICRC
  70. (1995). Separation process intensification gas liquid cyclones',
  71. (1986). Solution of the implicitly discretised fluid flow equations by operator-splitting', doi
  72. (1988). Study of structure parameters of cyclones',
  73. (1992). Study of the gas circulation patterns in a uni-flow cyclone', doi
  74. (1989). TFD reveals secrets of the cyclone',
  75. (1994). The application of specialist hydrocyclone for separation and clean-up of solids in the oil and gas industry', doi
  76. (1979). The behaviour of uni-flow cyclones, Proceeding of 2' World Filtration Congress,
  77. (1992). The development of a multi-phase pump based oil a liquid recycle system',
  78. (1932). The fundamental principles and limits of cyclone dust removal', (in German, English translation).
  79. (1974). The numerical computation of turbulent flows', doi
  80. (1995). The scopefor process intensification in the offshore industry - Volume 1: Main report', BHR Group report no.
  81. (1994). The separation of solids and liquids with hydrocyclone-based technology for water treatment and crude processing', Journal for the Society of Petroleum Engineers, paper no. doi
  82. (1996). The tortoise and the hare',
  83. (1976). Theflow pattern in the exit pipe of the cyclone,
  84. (1948). Theory and design of an improved centrifugal air cleaner',
  85. (1995). TPI design engineers go with the flow', Chemical Engineering,
  86. (1967). Turbulence transport equations', doi
  87. (1980). Turbulent swirl with gas-solid flow in cyclone', doi
  88. (1996). Wellhead desander delivers the goods'
  89. (1995). WELLSEP - The compact inline separator',
  90. Zang Zisheng and Yu Kuotsung 1988, 'Study of structure parameters of cyclones',

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.