An investigation of the influence of sodium chloride on the desulphurization properties of limestone

✍ Scribed by Paolo Davini; Gennaro DeMichele; Paolo Ghetti

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 439 KB
• Volume: 71
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(92)90138-e

✦ Synopsis

This investigation shows how sodium chloride adsorbed on particles of limestone can influence certain surface characteristics of the calcium oxide obtained by the calcination process and its capability for flue-gas desulphurization.

About 2 wt% of NaCl was found to favour the formation of CaO with a porous texture and also with a better size distribution, which is related both to a higher degree of conversion to CaSO, of the sorbent and to a higher rate of conversion. This effect reaches a maximum activity at a temperature of about 850°C and markedly decreases with increase in the sorbent particle size. KC1 behaves in a similar way, but other metallic chlorides examined led to a decrease of the sorption activity of the CaO.