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103977

Modeling of Carbon Dioxide Capture in Fluidized Bed.

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Last updated: 22 Jan 2023

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Mechanical Power Engineering

Abstract

Carbon capture and storage (CCS) has been globally gaining popularity as a viable greenhouse gases mitigation strategy throughout the last decade. Calcium looping (CaL) is an emerging technology to capture carbon dioxide from flue gases of fossil fueled power plants exploiting the reversible gas-solid reaction between the carbon dioxide (CO2) and calcium oxide (CaO) to form calcium carbonate (CaCO3) in a fluidized bed.  In this work, a dynamic model of a bubbling bed carbonator, the key reactor in the capture process, has been presented. The model incorporate both hydrodynamics and chemical kinetics to provide more reliable predictions. The model has been validated with experimental data obtained at combustion lab, Mansoura University using a fluidized bed carbonator of 10.5 cm inner diameter as well as a mathematical model found in literature. The key parameters have been investigated to check for system sensitivity. Bed temperature has a non-monotonic effect on CO2 capture efficiency. Maximum CO2 capture efficiency was found to occur around a temperature of 675 °C. Capture efficiency increases with either decreasing fluidization velocity or increasing bed particle size due to enhanced mass transfer and increased residence time. These findings almost accord with published data. Also, the average CO2 capture efficiency was found to increase with increasing static bed height up to a certain limit. Further increase in bed height doesn't considerably affect the capture efficiency. The proposed model can be used as a design tool that would enable the optimization and commercialization of calcium looping. 

DOI

10.21608/bfemu.2020.103977

Keywords

Carbon Capture, Global Warming, Calcium Looping, Fluidized Bed

Authors

First Name

Shady

Last Name

Emad

MiddleName

-

Affiliation

Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura, 35516, Egypt

Email

shadyemad@mans.edu.eg

City

-

Orcid

-

First Name

Ahmed

Last Name

Hegazi

MiddleName

Abd-Elsalam

Affiliation

Mechanical Engineering Department, University of Mansoura, CO 35516, Egypt

Email

ahmedabd_elsallam@yahoo.com

City

-

Orcid

-

First Name

Salah

Last Name

El-Emam

MiddleName

H.

Affiliation

Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura, 35516, Egypt

Email

-

City

-

Orcid

-

First Name

Farouk

Last Name

Okasha

MiddleName

M.

Affiliation

Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, El-Mansoura, 35516, Egypt

Email

-

City

-

Orcid

-

Volume

41

Article Issue

4

Related Issue

15137

Issue Date

2016-12-01

Receive Date

2016-09-29

Publish Date

2016-12-01

Page Start

18

Page End

27

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 41_Issue 4_Pages 18-27.pdf

PDF . 3.7MB

Link

https://bfemu.journals.ekb.eg/article_103977.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=103977

Order

9

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

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Article

Created At

22 Jan 2023