Adhesive Carrier Particles for Rapidly Hydrated Sorbent for Moderate-Temperature Dry Flue Gas Desulfurization

作者：Li, Yuan; You, Changfu^*; Song, Chenxing

来源：Environmental Science & Technology, 2010, 44(12): 4692-4696.

DOI：10.1021/es903515d

• CIRCULATING FLUIDIZED-BED
• FLY-ASH
• CALCIUM SORBENT
• ATTRITION
• SULFATION
• REMOVAL
• LIME

A rapidly hydrated sorbent for moderate-temperature dry flue gas desulfurization was prepared by rapidly hydrating adhesive carrier particles and lime. The circulation ash from a circulating fluidized bed boiler and chain boiler ash, both of which have rough surfaces with large specific surface areas and specific pore volumes, can improve the adhesion, abrasion resistance, and desulfurization characteristics of rapidly hydrated sorbent when used as the adhesive carrier particles. The adhesion ability of sorbent made from circulation ash is 67.4% higher than that of the existing rapidly hydrated sorbent made from fly ash, the abrasion ratio is 76.2% lower, and desulfurization ability is 14.1% higher. For sorbent made from chain boiler ash, the adhesion ability is increased by 74.7%, the desulfurization ability is increased by 30.3%, and abrasion ratio is decreased by 52.4%. The abrasion ratios of the sorbent made from circulation ash having various average diameters were all about 9%, and their desulfurization abilities were similar (similar to 150 mg/g).

• 出版日期2010-6-15
• 单位清华大学