Physico-chemistry of the limestone sulphation process / K. Wieczorek-Ciurowa // Journal of Thermal Analysis and Calorimetry [Dokument elektroniczny]. – 1998, Vol. 54, Iss. 1, s. 85-91 : fot., tab. – ... więcej

Physico-chemistry of the limestone sulphation process / K. Wieczorek-Ciurowa // Journal of Thermal Analysis and Calorimetry [Dokument elektroniczny]. – 1998, Vol. 54, Iss. 1, s. 85-91 : fot., tab. – Tryb dostępu: https://link.springer.com/article/10.1023/A:1010160717434. – Bibliogr. 22 poz., Abstr. – Mat. konf.: International Conference on Calorimetry, Experimental Thermodynamics and Thermal Analysis (CETTA97), Zakopane, Poland, 08-13.09.1997. – doi: 10.1023/A:1010160717434. – ISSN 1588-2926

Aspects of the mechanism of the overall reaction between CaCO3/CaO and SO2/SO3 under oxidizing conditions are discussed. The limestone and lime sulphation processes were carried out in a thermobalance ... więcej

Aspects of the mechanism of the overall reaction between CaCO3/CaO and SO2/SO3 under oxidizing conditions are discussed. The limestone and lime sulphation processes were carried out in a thermobalance under conditions relevant to atmospheric fluidized bed combustion. Sulphated samples, prepared in the form of cross-section particles, were examined in a scanning electron microscope by energy-dispersive X-ray and back-scattered electron imaging. Photomicrographs are presented. The reaction proceeded from the outer surface of the particles and along the pores. Surface textural changes during the reaction were considered. The layer of products was identified as controlling both the rate and extent of limestone/lime sulphation. In the products, two sulphur-bearing solids (CaSO4 and CaS) were identified. The presence of CaS, which may cause difficulties in practice, is attributed to CaSO3 disproportionation.