An improved core-in-shell sorbent for desulfurizing hot coal gas

Akiti Jr., T. T. ; Constant, K. P. ; Doraiswamy, L. K. ; Wheelock, T. D. (2002) An improved core-in-shell sorbent for desulfurizing hot coal gas Advances in Environmental Research, 6 (4). pp. 419-428. ISSN 1093-0191

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Work on an advanced calcium-based sorbent for desulfurizing hot coal gas has led to the development of a unique material in the form of spherical pellets, which have a limestone-based core encased in a strong supporting shell. Strong pellets are prepared by incorporating some calcium aluminate cement in the core and a larger amount in the shell, together with limestone. The pellets are prepared by a two-step pelletizing method, followed by steam curing and heat treatment. The pellets are capable of absorbing relatively large amounts of hydrogen sulfide at high temperature (e.g. 1150-1200 K) and can be regenerated by a cyclic oxidation and reduction process.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Sorbent; Calcium-based; Hydrogen Sulfide; Coal Gas; Desulfurization; Sulfurous Gases; Limestone; Calcium Aluminate Cement
ID Code:22799
Deposited On:24 Nov 2010 08:25
Last Modified:31 May 2011 04:40

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