NDLI: Formation of Calcium Chloride and Its Interaction With the Sand Particles During Fluidised Bed Combustion

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Partanen, Jatta Backman, Peter Backman, Rainer Hupa, Mikko
Copyright Year	2003
Abstract	Fluidised bed boilers are well suited to burning fuels that have diverse characteristics such as refuse-derived fuels and biofuels. These fuels often contain various amounts of chlorine. In many countries, the emissions of HCl from waste material combustion are regulated by stringent laws. In the fluidised bed combustion of sulphur-containing fuels, the addition of a Ca-based sorbent into the bed is a widely used method for controlling SO2 emission. In this work, the absorption of HCl with limestone was studied in the laboratory at high temperatures, 650–850°C, by using a special thermogravimetric apparatus (TGA). In addition to the absorption rates, special emphasis was placed on studying the effects of molten phase formation during chlorination. We have recently reported our first results on the interactions between the calcium chloride being formed and the quartz sand. We proposed a chemical mechanism for the formation of the calcium silicate coatings frequently found on the sand particles in fluidised beds. Here, the proposed mechanism in which calcium chloride acts as a crucial intermediate is more thoroughly discussed.
Sponsorship	Advanced Energy Systems
Starting Page	579
Ending Page	585
Page Count	7
File Format	PDF
ISBN	0791836800
DOI	10.1115/FBC2003-156
e-ISBN	0791836754
Conference Proceedings	17th International Conference on Fluidized Bed Combustion
Language	English
Publisher Date	2003-05-18
Publisher Place	Jacksonville, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Fluidized bed combustion Sorbents Solid wastes Boilers Combustion Biofuel High temperature Fuels Coatings Emissions Sands Absorption Particulate matter Sulfur Fluidized beds
Content Type	Text
Resource Type	Article

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