Publication detail

Influence of the lime slurry droplet spectrum on the efficiency of semi-dry flue gas desulfurization

KATOLICKÝ, J. JÍCHA, M.

Original Title

Influence of the lime slurry droplet spectrum on the efficiency of semi-dry flue gas desulfurization

Czech Title

Vliv velikostního spektra kapek vápenné suspenze na účinnosti polosuchého odsíření spalin.

English Title

Influence of the lime slurry droplet spectrum on the efficiency of semi-dry flue gas desulfurization

Type

journal article

Language

en

Original Abstract

A numerical model based on computational fluid dynamics is presented to predict the efficiency of a semi-dry flue gas desulfurization process. The Euler-Lagrange particle tracking method is used to predict both evaporation and mass transfer between the flue gas and the lime slurry droplets. The overall desulfurization process is split into two periods, i.e. the constant-rate and the falling-rate period, during which the fundamental chemical reaction between sulfur dioxide and calcium hydroxide is modeled. The absorption efficiency is calculated for different spray characteristics, taking into account different size spectra of the lime slurry droplets characterized by different standard deviations for a constant mass mean diameter d50 of 25. The results are compared with published experiments and show excellent agreement as well as a significant role of the spray characteristics in the FGD efficiency.

Czech abstract

V příspěvku je prezentován numerický CFD model umožňující výpočet účinnost procesu polosuchého odsíření spalin. K výpočtu přenosu tepla a hmoty mezi spalinami a kapičkami vápenné suspenze je použit Euler-Lagrangeuv přístup. Proces odsíření je rozdělen do dvou fází, tzv. „constant-rate“ a „falling-rate“, během kterých je modelována základní chemická reakce mezi oxidem siřičitým a hydroxidem vápenatým.

English abstract

A numerical model based on computational fluid dynamics is presented to predict the efficiency of a semi-dry flue gas desulfurization process. The Euler-Lagrange particle tracking method is used to predict both evaporation and mass transfer between the flue gas and the lime slurry droplets. The overall desulfurization process is split into two periods, i.e. the constant-rate and the falling-rate period, during which the fundamental chemical reaction between sulfur dioxide and calcium hydroxide is modeled. The absorption efficiency is calculated for different spray characteristics, taking into account different size spectra of the lime slurry droplets characterized by different standard deviations for a constant mass mean diameter d50 of 25. The results are compared with published experiments and show excellent agreement as well as a significant role of the spray characteristics in the FGD efficiency.

Keywords

desulphurization, simulation

RIV year

2013

Released

10.01.2013

Pages from

156

Pages to

166

Pages count

11

BibTex


@article{BUT97369,
  author="Jaroslav {Katolický} and Miroslav {Jícha}",
  title="Influence of the lime slurry droplet spectrum on the efficiency of semi-dry flue gas desulfurization",
  annote="A numerical model based on computational fluid dynamics is presented to predict the efficiency of a semi-dry flue gas desulfurization process. The Euler-Lagrange particle tracking method is used to predict both evaporation and mass transfer between the flue gas and the lime slurry droplets. The overall desulfurization process is split into two periods, i.e. the constant-rate and the falling-rate period, during which the fundamental chemical reaction between sulfur dioxide and calcium hydroxide is modeled. The absorption efficiency is calculated for different spray characteristics, taking into account different size spectra of the lime slurry droplets characterized by different standard deviations for a constant mass mean diameter d50 of 25. The results are compared with published experiments and show excellent agreement as well as a significant role of the spray characteristics in the FGD efficiency.",
  chapter="97369",
  number="1",
  volume="36",
  year="2013",
  month="january",
  pages="156--166",
  type="journal article"
}