新型钡基高温燃烧固硫剂的研究与应用  

SULFUR CAPTURE MECHANISM AND APPLICATION OF NOVEL BARIUM-BASED SORBENTS AT HIGH TEMPERATURE

作　　者：李宁[1] 刘维屏[2] 周俊虎[3] 岑可法[3] 

机构地区：[1]浙江大学化学系,浙江杭州310027 [2]浙江大学环境科学研究所,浙江杭州310027 [3]浙江大学能源洁净利用与环境工程教育部重点实验室,浙江杭州310027

出　　处：《化工学报》2002年第11期1198-1201,共4页CIESC Journal

基　　金：国家重点基础研究发展规划资助项目 (No.G19990 2 2 2 0 4);国家教委骨干教师课题资助项目~~

摘　　要：The desulfurization technology during coal combustion in furnace has been a competitive choice for middle and small industrial boilers to meet the environmental protection requirements,with the advantage of low cost and convenient operation.The ordinary calcium-based sorbents such as limestone and calcium carbide residue have low desulfurization efficiency during coal combustion because of CaSO 4 decomposition.The sulphation product BaSO 4 which don’t decompose until 1580?℃ has much better thermal stability than CaSO 4 which rapidly decompose at about 1300?℃.A new type of barium-based sorbent with high desulfurization efficiency was developed.ZCS intelligent sulfur determination analyzer was used to study sulfur capture mechanism during the high temperature combustion process of coal.In addition the dynamic sulfur capture process of the mixture of barium-based sorbent and calcium-based sorbent was studied in detail.Industrial grate furnace experiment revealed that the desulfurization efficiency of barium-based sorbents could reach 35.5%, which is higher than 13.88% of calcium-based sorbent.It implied that the desulfurization effect of barium salt was much better than calcium salt during coal combustion at about 1200～1300?℃.The desulfurization technology during coal combustion in furnace has been a competitive choice for middle and small industrial boilers to meet the environmental protection requirements,with the advantage of low cost and convenient operation.The ordinary calcium-based sorbents such as limestone and calcium carbide residue have low desulfurization efficiency during coal combustion because of CaSO 4 decomposition.The sulphation product BaSO 4 which don't decompose until 1580?℃ has much better thermal stability than CaSO 4 which rapidly decompose at about 1300?℃.A new type of barium-based sorbent with high desulfurization efficiency was developed.ZCS intelligent sulfur determination analyzer was used to study sulfur capture mechanism during the high temperature combustion process of coal.In addition the dynamic sulfur capture process of the mixture of barium-based sorbent and calcium-based sorbent was studied in detail.Industrial grate furnace experiment revealed that the desulfurization efficiency of barium-based sorbents could reach 35.5%, which is higher than 13.88% of calcium-based sorbent.It implied that the desulfurization effect of barium salt was much better than calcium salt during coal combustion at about 1200～1300?℃.

关 键 词：固硫剂 钡基吸着剂 钙基吸着剂 高温燃烧 固硫机理 固硫率 脱硫 

分 类 号：X701.3[环境科学与工程—环境工程]