Model for the sulfidation of calcined limestone and its use in reactor models.

  • 10 Citations

Abstract

A mathematical model describing the sulfidation of a single calcined limestone particle was developed and experimentally verified. This model, which includes no fitting parameters, assumes a calcined limestone particle to consist of spherical grains of various sizes that react with H2S according to the classic shrinking-core model. The initial size distribution of the grains is derived from mercuiy porosimetiy. The transport of H2S through the bidisperse limestone particle is calculated based on the randompore model of Wakao and Smith, which distinguishes macropore and micropore zones. Knudsen diffusivity inside the micropore zones is calculated according to the dusty-gas approach. The single-particle model delivers the value of a new defined utilization factor, which includes effects of external mass-transfer limitation, pore-diffusion limitation, and grain-size distribution on particle reactivity. A correlation derived for a single batch of calcined limestone explicitly expresses this utilization factor as a function of conversion and relevant process parameters. This correlatiori can be easily incorporated into reactor models, as shown for an existing model describing the capture of H2S by a fluidized bed of calcined limestone particles.
Original languageUndefined
Pages (from-to)1657-1666
Number of pages10
JournalAIChE journal
Volume44
Issue number7
DOIs
StatePublished - 1998

Fingerprint

Calcium Carbonate
Limestone
Cereals
Gases
Fluidized beds
Mass transfer
Mathematical models

Keywords

  • IR-71446
  • METIS-105784

Cite this

Heesink, Albertus B.M.; Brilman, Derk Willem Frederik; van Swaaij, Willibrordus Petrus Maria / Model for the sulfidation of calcined limestone and its use in reactor models.

In: AIChE journal, Vol. 44, No. 7, 1998, p. 1657-1666.

Research output: Scientific - peer-reviewArticle

@article{54937e3b8f6b4846a89efa8ccc1365eb,
title = "Model for the sulfidation of calcined limestone and its use in reactor models.",
abstract = "A mathematical model describing the sulfidation of a single calcined limestone particle was developed and experimentally verified. This model, which includes no fitting parameters, assumes a calcined limestone particle to consist of spherical grains of various sizes that react with H2S according to the classic shrinking-core model. The initial size distribution of the grains is derived from mercuiy porosimetiy. The transport of H2S through the bidisperse limestone particle is calculated based on the randompore model of Wakao and Smith, which distinguishes macropore and micropore zones. Knudsen diffusivity inside the micropore zones is calculated according to the dusty-gas approach. The single-particle model delivers the value of a new defined utilization factor, which includes effects of external mass-transfer limitation, pore-diffusion limitation, and grain-size distribution on particle reactivity. A correlation derived for a single batch of calcined limestone explicitly expresses this utilization factor as a function of conversion and relevant process parameters. This correlatiori can be easily incorporated into reactor models, as shown for an existing model describing the capture of H2S by a fluidized bed of calcined limestone particles.",
keywords = "IR-71446, METIS-105784",
author = "Heesink, {Albertus B.M.} and Brilman, {Derk Willem Frederik} and {van Swaaij}, {Willibrordus Petrus Maria}",
year = "1998",
doi = "10.1002/aic.690440717",
volume = "44",
pages = "1657--1666",
journal = "AIChE journal",
issn = "0001-1541",
publisher = "Wiley-Blackwell",
number = "7",

}

Model for the sulfidation of calcined limestone and its use in reactor models. / Heesink, Albertus B.M.; Brilman, Derk Willem Frederik; van Swaaij, Willibrordus Petrus Maria.

In: AIChE journal, Vol. 44, No. 7, 1998, p. 1657-1666.

Research output: Scientific - peer-reviewArticle

TY - JOUR

T1 - Model for the sulfidation of calcined limestone and its use in reactor models.

AU - Heesink,Albertus B.M.

AU - Brilman,Derk Willem Frederik

AU - van Swaaij,Willibrordus Petrus Maria

PY - 1998

Y1 - 1998

N2 - A mathematical model describing the sulfidation of a single calcined limestone particle was developed and experimentally verified. This model, which includes no fitting parameters, assumes a calcined limestone particle to consist of spherical grains of various sizes that react with H2S according to the classic shrinking-core model. The initial size distribution of the grains is derived from mercuiy porosimetiy. The transport of H2S through the bidisperse limestone particle is calculated based on the randompore model of Wakao and Smith, which distinguishes macropore and micropore zones. Knudsen diffusivity inside the micropore zones is calculated according to the dusty-gas approach. The single-particle model delivers the value of a new defined utilization factor, which includes effects of external mass-transfer limitation, pore-diffusion limitation, and grain-size distribution on particle reactivity. A correlation derived for a single batch of calcined limestone explicitly expresses this utilization factor as a function of conversion and relevant process parameters. This correlatiori can be easily incorporated into reactor models, as shown for an existing model describing the capture of H2S by a fluidized bed of calcined limestone particles.

AB - A mathematical model describing the sulfidation of a single calcined limestone particle was developed and experimentally verified. This model, which includes no fitting parameters, assumes a calcined limestone particle to consist of spherical grains of various sizes that react with H2S according to the classic shrinking-core model. The initial size distribution of the grains is derived from mercuiy porosimetiy. The transport of H2S through the bidisperse limestone particle is calculated based on the randompore model of Wakao and Smith, which distinguishes macropore and micropore zones. Knudsen diffusivity inside the micropore zones is calculated according to the dusty-gas approach. The single-particle model delivers the value of a new defined utilization factor, which includes effects of external mass-transfer limitation, pore-diffusion limitation, and grain-size distribution on particle reactivity. A correlation derived for a single batch of calcined limestone explicitly expresses this utilization factor as a function of conversion and relevant process parameters. This correlatiori can be easily incorporated into reactor models, as shown for an existing model describing the capture of H2S by a fluidized bed of calcined limestone particles.

KW - IR-71446

KW - METIS-105784

U2 - 10.1002/aic.690440717

DO - 10.1002/aic.690440717

M3 - Article

VL - 44

SP - 1657

EP - 1666

JO - AIChE journal

T2 - AIChE journal

JF - AIChE journal

SN - 0001-1541

IS - 7

ER -