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Title: Decarbonation rates of cycled CaO absorbents

Abstract

Decarbonation rates of cycled CaO sorbent were measured for a wide range of particle sizes (0.25-4 {mu}m), temperatures (747-830{sup o}C), and relative CO{sub 2} concentrations (0-95%). The decarbonation rate was found to decay exponentially with an increase in partial CO{sub 2} pressure that can be explained by assuming CaO nuclei formation is the rate-limiting step. A differential particle model using two variable parameters was successfully applied to fit the experimental data. An approximate analytical expression is put forward for the decarbonation rate as a function of sorbent texture, temperature, CO{sub 2} pressure, particle size, and Sherwood number. 24 refs., 6 figs.

Authors:
; ;  [1]
  1. Boreskov Institute of Catalysis, Novosibirsk (Russian Federation)
Publication Date:
OSTI Identifier:
21073539
Resource Type:
Journal Article
Journal Name:
Energy and Fuels
Additional Journal Information:
Journal Volume: 22; Journal Issue: 3; Journal ID: ISSN 0887-0624
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; CARBON DIOXIDE; CAPTURE; ADSORBENTS; CALCIUM OXIDES; CALCINATION; CHEMICAL REACTION KINETICS; MATHEMATICAL MODELS; PARTICLE SIZE

Citation Formats

A.G. Okunev, S.S. Nesterenko, and A.I. Lysikov. Decarbonation rates of cycled CaO absorbents. United States: N. p., 2000. Web.
A.G. Okunev, S.S. Nesterenko, & A.I. Lysikov. Decarbonation rates of cycled CaO absorbents. United States.
A.G. Okunev, S.S. Nesterenko, and A.I. Lysikov. Mon . "Decarbonation rates of cycled CaO absorbents". United States.
@article{osti_21073539,
title = {Decarbonation rates of cycled CaO absorbents},
author = {A.G. Okunev and S.S. Nesterenko and A.I. Lysikov},
abstractNote = {Decarbonation rates of cycled CaO sorbent were measured for a wide range of particle sizes (0.25-4 {mu}m), temperatures (747-830{sup o}C), and relative CO{sub 2} concentrations (0-95%). The decarbonation rate was found to decay exponentially with an increase in partial CO{sub 2} pressure that can be explained by assuming CaO nuclei formation is the rate-limiting step. A differential particle model using two variable parameters was successfully applied to fit the experimental data. An approximate analytical expression is put forward for the decarbonation rate as a function of sorbent texture, temperature, CO{sub 2} pressure, particle size, and Sherwood number. 24 refs., 6 figs.},
doi = {},
journal = {Energy and Fuels},
issn = {0887-0624},
number = 3,
volume = 22,
place = {United States},
year = {2000},
month = {5}
}