[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.
Xiao
Hai-ping
HP
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
Li
Jing-tao
JT
Zhou
Jun-hu
JH
Sun
Bao-min
BM
Ye
Li-ping
LP
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