Control-Oriented Modeling and Experimental Validation of a Deoiling Hydrocyclone System

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Abstract

As the treated water from offshore oil and gas production is discharged to the surrounding sea, there is an incentive to improve the performance of the offshore produced water treatment, to reduce the environmental pollutants to the sea. Regulations determine both the maximum allowed oil concentration and the total annual quantity. It is reasonable to assume that when better separation equipment or methods are developed, the regulation will become more strict, and force other producers to follow the trend towards zero harmful discharge. This paper develops and validates a hydrocyclone model to be used as a test-bed for improved control designs. The modeling methodology uses a combination of first-principles to define model structure and data-driven parameter identification. To evaluate and validate the separation performance, real-time fluorescence-based oil-in-water (OiW) concentration monitors, with dual redundancy, are installed and used on sidestreams of a modified pilot plant. The installed monitors measure the inlet and outlet OiW concentration of the tested hydrocyclone. The proposed control-oriented hydrocyclone model proved to be a reasonable candidate for predicting the hydrocyclone separation performance.
Original languageEnglish
Article number1010
JournalProcesses
Volume8
Issue number9
Number of pages33
ISSN2227-9717
DOIs
Publication statusPublished - 2020

Keywords

  • Droplet trajectories
  • Experimental validation
  • Hydrocyclone
  • Modeling
  • Oil-in-water measurements
  • Separation efficiency

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