Friday, August 12, 2016

The effect of steam on a synthetic Ca-based sorbent for carbon capture



Type
Journal Article
Author
B. González
Author
W. Liu
URL
Volume
285
Pages
378-383
Publication
Chemical Engineering Journal
Date
February 1, 2016
Abstract
Researchers examined the rate and extent of a synthetic sorbent containing 83 wt% CaO, 14 wt% MgO and 3 wt% Ca12Al14O33 to react with CO2 at 750 °C in the presence of 5 or 10 vol% steam. Similar to the natural sorbents and their derivatives, the rate and extent of carbonation by the synthetic sorbent was observed to increase substantially with the partial pressure of steam. The improvement appears to be due to the ability of steam to promote the growth of product islands of CaCO3 in the direction normal to the surface, as well as affecting the porosity of the calcined material.

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