High temperature desulfurization using fine sorbent particles under boiler injection conditions

Research output: Contribution to journalArticle

Abstract

The high temperature reaction of SO2 with CaO was investigated in three reactors: a thermogravimetric reactor (TGA), a volumetric reactor (VR) and an entrained flow reactor (EFR). Several natural limestones with super fine particles were used as sorbents. It was found that the reaction could be well characterized by a two-stage process. The initial stage was very fast and lasted about 0.1-0.4 s. The chemical kinetics of the reaction was studied and modelled. In addition to other parameters, such as particle size and Brunauer-Emmett-Teller (BET) surface area, the pore volume located in the larger pores (> 5.0 nm) was found to contribute somewhat to the high SO2 removal and CaO conversion. At Ca/S = 2 the SO2 removal was more than 90%.

Details

Authors
  • ZC Ye
  • Wuyin Wang
  • Q Zhong
  • Ingemar Bjerle
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Chemical Engineering

Keywords

  • DESULFURIZATION, PORE PARTICLE SIZE, REACTIVITY
Original languageEnglish
Pages (from-to)743-750
JournalFuel
Volume74
Issue number5
Publication statusPublished - 1995
Publication categoryResearch
Peer-reviewedYes