Control parings of a de-oiling membrane process

Kasper Lund Jepsen, Leif Hansen, Zhenyu Yang

Research output: Contribution to journalConference article in JournalResearchpeer-review

1 Citation (Scopus)

Abstract

In offshore oil and gas productions increased attention is directed at the oil-water separation process, as environmental laws demand lower hydrocarbon concentrations in the discharged produced water. Membrane filtration is one possible candidate for significantly improving separation efficiency. However, fouling is one major challenge, where contaminants accumulate within the membrane and thereby adds additional flow resistance. This paper investigates the possibility of improving reference tracking and reducing fouling by improving control pairings and actuator placement. This is achieved by investigating the interaction between commonly deployed decentralized control loops on a membrane process model. The relative input-output interactions are evaluated across varying feed flow rates and membrane flow conductances to ensure that decoupling is maintained beyond the defined operating point. This work concludes that the location of the actuators affects the degree of decoupling significantly and to achieve the maximum degree of decoupling, different actuators must be selected across a variety of operating condition.
Original languageEnglish
Book seriesIFAC-PapersOnLine
Volume51
Issue number8
Pages (from-to)126-131
Number of pages6
ISSN1474-6670
DOIs
Publication statusPublished - 2018
Event3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018 - Esbjerg, Denmark
Duration: 30 May 20181 Jun 2018
Conference number: 3

Conference

Conference3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018
Number3
CountryDenmark
CityEsbjerg
Period30/05/201801/06/2018

Fingerprint

Membranes
Actuators
Fouling
Decentralized control
Hydrocarbons
Flow rate
Impurities
Gases
Water
Oils
Produced Water

Keywords

  • Relative gain array
  • membrane
  • control parings
  • separation
  • multi-phase

Cite this

Jepsen, Kasper Lund ; Hansen, Leif ; Yang, Zhenyu. / Control parings of a de-oiling membrane process. In: IFAC-PapersOnLine. 2018 ; Vol. 51, No. 8. pp. 126-131.
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Control parings of a de-oiling membrane process. / Jepsen, Kasper Lund; Hansen, Leif; Yang, Zhenyu.

In: IFAC-PapersOnLine, Vol. 51, No. 8, 2018, p. 126-131.

Research output: Contribution to journalConference article in JournalResearchpeer-review

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AU - Hansen, Leif

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N2 - In offshore oil and gas productions increased attention is directed at the oil-water separation process, as environmental laws demand lower hydrocarbon concentrations in the discharged produced water. Membrane filtration is one possible candidate for significantly improving separation efficiency. However, fouling is one major challenge, where contaminants accumulate within the membrane and thereby adds additional flow resistance. This paper investigates the possibility of improving reference tracking and reducing fouling by improving control pairings and actuator placement. This is achieved by investigating the interaction between commonly deployed decentralized control loops on a membrane process model. The relative input-output interactions are evaluated across varying feed flow rates and membrane flow conductances to ensure that decoupling is maintained beyond the defined operating point. This work concludes that the location of the actuators affects the degree of decoupling significantly and to achieve the maximum degree of decoupling, different actuators must be selected across a variety of operating condition.

AB - In offshore oil and gas productions increased attention is directed at the oil-water separation process, as environmental laws demand lower hydrocarbon concentrations in the discharged produced water. Membrane filtration is one possible candidate for significantly improving separation efficiency. However, fouling is one major challenge, where contaminants accumulate within the membrane and thereby adds additional flow resistance. This paper investigates the possibility of improving reference tracking and reducing fouling by improving control pairings and actuator placement. This is achieved by investigating the interaction between commonly deployed decentralized control loops on a membrane process model. The relative input-output interactions are evaluated across varying feed flow rates and membrane flow conductances to ensure that decoupling is maintained beyond the defined operating point. This work concludes that the location of the actuators affects the degree of decoupling significantly and to achieve the maximum degree of decoupling, different actuators must be selected across a variety of operating condition.

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