Kinetics study of the SO2 sorption by Brazilian dolomite using thermogravimetry

Dolomites as SO2 Sorbents in Fluid Combustion Technology

“…The effective share of MgO in SO 2 binding is confirmed on the basis of the presence of both calcium and magnesium (CaMg 2 (SO 4 ) 3 ), and magnesium sulfates (MgSO 4 ) among the desulfurization products, which indirectly indicates their durability under the experimental temperature conditions (up to 850 • C). The desulfurization efficiency of the dolomites demonstrated in this case is comparable to and even higher than that of the limestone [5,7,8,15].…”

“…During analyzing the possibility of using dolomites as SO 2 sorbents in the conditions of fluid combustion technology, the most controversial is the thermodynamic stability of desulfurization products containing magnesium under high-temperature conditions [11,13,14]. The share of magnesium in the SO 2 binding process is also controversial, and the magnesium oxide (MgO) formed during the thermal dissociation of dolomite is treated as a non-reactive ballast [5,13].…”

“…The research methodology of experimental work concerning the process of sulfation is also diversified. For these purposes, thermogravimetric analysis is commonly used [5,7]. In some cases, specially constructed experimental equipment is used, which approximates the conditions in fluidized furnaces [14].…”

Sulphur capturing by an inertinite rich high ash bituminous coal during conversion in a pilot packed bed reactor

“…Calcium based sorbents such as limestone and dolomite have been used to provide the necessary calcium to react with sulphur leading to capturing of sulphur by the minerals. The use of calcium based sorbents for flue gases and fuel gas desulphurisation has been researched and reported on by various authors [3][4][5]. These authors' work on sulphur capturing is limited to the use of calcium-based sorbents for flue gases and fuel gases desulphurisation for fine coal combustion applications.…”

A estrutura física de calcários e a reatividade como sorventes de 'SO IND.2'

“…A Análise de Variância (ANOVA) permite a comparação das médias de tratamento (VIEIRA, 2006 SILVA, 2003;ÁVILA, 2005), doutorado (CRNKOVIC, 2003;ÁVILA, 2008) e outras publicações (ÁVILA et al, 2006;CRNKOVIC et al, 2004;CRNKOVIC et al, 2006;MORTARI et al, 2010, entre outras Ar sintético contendo (20 ± 0,5) % de oxigênio (O 2 ) e (80 ± 0,5) % de nitrogênio (N 2 ).…”