[Desulfurization characteristic of organic calcium at high temperature].
Aim to control the emission of SO2 during coal combustion, desulfurization characteristic of organic calcium was studied by intelligent sulfur determination analyzer. Sulfur releasing curve changed from two "peak value" to one for addition of organic calcium, with velocity of SO2 release decreasing. Efficiency of sulfur reduction was double when organic calcium was used under 1 000 degrees C compared to limestone, and reduction efficiency of calcium magnesium acetate was 73.84%. Sulfur content, furnace temperature, calcium/sulfur ratio and paticle's diameter were important factors as for desulfurizing rate. Sulfur removal efficiency was improved with coal's sulfur content increasing or particle's diameter decreasing. Decreasing degree of reduction efficiency lowered with sulfur content increasing as temperature improved. Efficiency remained high level as 59.08% by calcium magnesium acetate at 1 200 degrees C. Perfect efficiency could be reached as calcium/sulfur ratio being one and augmentation degree was inapparent with more calcium addition. Therefore organic calciums are excellent absorbent for desulfurization and calcium magnesium acetate has best sulfur removal 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
Zhou
Jun-Hu
JH
Liu
Jian-Zhong
JZ
Sun
Bao-Min
BM
D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry*; D002119:Calcium Carbonate / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D003031:Coal; D006358:Hot Temperature; D007220:Industrial Waste / Q000517:prevention & control*; D009930:Organic Chemicals / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry; D013458:Sulfur Dioxide / Q000737:chemistry*; D014835:Volatilization
D000393:Air Pollutants; D017610:Calcium Compounds; D003031:Coal; D007220:Industrial Waste; D009930:Organic Chemicals; D013458:Sulfur Dioxide; D013455:Sulfur; D002119:Calcium Carbonate