[Pore structure and desulfurization characteristics of organic calcium].
Calcination of oganic calcium was carried out in fixed bed, pore structure of tested sample was analyzed with auto-adsorption analyzer, and desulfurization experiment was studied by intelligent sulfur determination analyzer. Specific surface area of calcium magnesium acetate (CMA) was 46.6 m2/g after calcination at 900 degrees C, almost four times of that of limestone. Specific surface area of calcium acetate (CA) were mainly made up of pore of diameter less than 5 nm, and those of CMA was chiefly contributed by middle pore of diameter about 5 nm. Agglomeration of CA occurred in pore of diameter less than 5 nm, while CMA was sintered in whole range of pore size distribution. Agglomeration of organic calcium were slighter. Desulfurization efficiency of organic calcium ranged from 62.28% to 75.55% at 1000 degrees C as calcium/sulfur ratio being one, which was one time more than that of limestone. Perfect pore structure of organic calcium contributes to higher desulfurization efficiency.
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment, Ministry of Education, North China Electric Power University, Beijing 102206, China. dr_xiaohaiping@yahoo.com.cn
Hai-ping
HP
Xiao
Jing-tao
JT
Li
Jun-hu
JH
Zhou
Bao-min
BM
Sun
Li-ping
LP
Ye
D000085:Acetates / Q000737:chemistry*; D000393:Air Pollutants / Q000737:chemistry / Q000302:isolation & purification*; D017610:Calcium Compounds / Q000737:chemistry; D006862:Hydrogen Sulfide / Q000737:chemistry / Q000302:isolation & purification*; D009930:Organic Chemicals / Q000737:chemistry; D016062:Porosity; D013458:Sulfur Dioxide / Q000737:chemistry / Q000302:isolation & purification*
D000085:Acetates; D000393:Air Pollutants; D017610:Calcium Compounds; D009930:Organic Chemicals; D013458:Sulfur Dioxide; C120662:calcium acetate; D006862:Hydrogen Sulfide