Effects of foaming and antifoaming agents on the performance of a wet flue gas desulfurization pilot plant

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Abstract

Foaming is a common phenomenon in industrial processes, including wet flue gas desulfurization (FGD) plants. A systemic investigation of the influence of two foaming agents, sodium dodecyl sulphate (SDS) and egg white albumin (protein), and two commercial antifoams on a wet FGD pilot plant operation has been carried out. Foaming caused by 0.03 g SDS/(L slurry) reduced the desulfurization degree from 84 to 74% and the solids and limestone concentrations of the slurry from 58 to 48 g/(L slurry) and from 1.4 to 1.0 g/(L slurry), respectively. These effects were attributed to the foaming transferring small particles to the foam layer present on top of the slurry in the holding tank. The addition of 0.03 g antifoams/(L slurry) to SDS foam eliminated the foam, but the desulfurization degree remained low. Potential mechanisms for the observed behavior are analyzed. (c) 2014 American Institute of Chemical Engineers
Original languageEnglish
JournalAIChE Journal
Volume60
Issue number7
Pages (from-to)2382-2388
ISSN0001-1541
DOIs
Publication statusPublished - 2014

Keywords

  • ENGINEERING,
  • PARTICLES
  • EMULSIONS
  • absorption
  • foam
  • environmental engineering
  • particle technology
  • Absorption
  • Environmental engineering
  • Foam
  • Particle technology
  • Flue gases
  • Foams
  • Pilot plants
  • Anti-foaming agents
  • Industrial processs
  • Pilot plant operations
  • Potential mechanism
  • Small particles
  • Sodium dodecyl sulphate
  • Wet flue gas desulfurization
  • Desulfurization

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