Issue 33, 2011
From the journal:

Physical Chemistry Chemical Physics

Improving the gas–solids contact efficiency in a fluidized bed of CO2 adsorbent fine particles

J. M. Valverde,*a   F. Pontiga,b   C. Soria-Hoyo,a   M. A. S. Quintanilla,a   H. Moreno,b   F. J. Durana  and  M. J. Espinb  

* Corresponding authors

a Department of Electronics and Electromagnetism, University of Seville, Avenida Reina Mercedes s/n, 41012 Sevilla, Spain

b Department of Applied Physics II, University of Seville, Avenida Reina Mercedes s/n, 41012 Sevilla, Spain

Abstract

A modified CO2 adsorbent is obtained by dry mixing of a Ca(OH)2 fine powder as received with a commercial silica nanopowder. Silica nanoparticles form light agglomerates of size of the order of tens of microns, which are uniformly fluidizable. These agglomerates act as dispersants of the Ca(OH)2 fine particles, which coat the nanoparticle agglomerates likely due to contact charging. Ca(OH)2 particles (CO2 adsorbent) are thus provided with a vehicle for uniform fluidization. In this way, the contact efficiency between the CO2 adsorbent and CO2 in the fluidized bed is greatly enhanced. Experimental results show that the improvement of Ca(OH)2 fluidizability serves to enhance the carbonation reaction in the fluidized bed.

Graphical abstract: Improving the gas–solids contact efficiency in a fluidized bed of CO2 adsorbent fine particles

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C1CP21939A
Article type
Communication
Submitted
14 Jun 2011
Accepted
20 Jun 2011
First published
11 Jul 2011

Phys. Chem. Chem. Phys., 2011,13, 14906-14909

Permissions

Request permissions

Improving the gas–solids contact efficiency in a fluidized bed of CO2 adsorbent fine particles

J. M. Valverde, F. Pontiga, C. Soria-Hoyo, M. A. S. Quintanilla, H. Moreno, F. J. Duran and M. J. Espin, Phys. Chem. Chem. Phys., 2011, 13, 14906 DOI: 10.1039/C1CP21939A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements