Through the mass balance and thermal balance calculation for a typical OxyCup （or OxiCup） furnace process featuring a capacity of 380 kt/a of steel plant residuMs, the material flow and thermal flow diagrams were fi...Through the mass balance and thermal balance calculation for a typical OxyCup （or OxiCup） furnace process featuring a capacity of 380 kt/a of steel plant residuMs, the material flow and thermal flow diagrams were firstly obtained. Then, the performance of the main fuel in the OxyCup process, i.e. coke and carbon dust, was ana lyzed, and the results indicated that coke was mainly used as the stock column skeleton for the furnace and exothermal agent with a weak reduction ability; whereas carbon dust was mixed in the C-brick to reduce the iron oxide. In addition, the comparison between OxyCup process and traditional blast furnace process indicated that the reduction and melting processes in the OxyCup process were relatively isolated, while in the traditional blast furnace process, they were mixed with each other in the high temperature zone. Moreover, oxidizing atmosphere is necessary in part of the OxyCup furnaces to ensure the complete combustion of part of the coke, while only reducing atmosphere is al lowed in traditional blast furnaces. Finally, it was confirmed that oxygen enrichment can make a remarkable increase of the energy income and high temperature blast makes oMy a small contribution to energy income as the energy from the combustion of carbon takes up nearly 90% of the total income.展开更多
针对传统方法的不足,提出了泡沫溶胶控制煤尘技术,并对泡沫溶胶湿润和黏附煤尘的特性进行了研究。基于湿润性动态接触角模型,分别对水性泡沫、泡沫溶胶和去离子水的湿润性和黏附功进行了对比分析;利用Zisman图对浸湿煤尘的湿润剂临界表...针对传统方法的不足,提出了泡沫溶胶控制煤尘技术,并对泡沫溶胶湿润和黏附煤尘的特性进行了研究。基于湿润性动态接触角模型,分别对水性泡沫、泡沫溶胶和去离子水的湿润性和黏附功进行了对比分析;利用Zisman图对浸湿煤尘的湿润剂临界表面张力值进行了分析。研究得出泡沫溶胶具有较好的煤尘湿润性,起泡能力和较强的黏附功;当润湿剂的表面张力值小于28.32 m N/m,可完全浸湿煤尘,当润湿剂的表面张力值大于73.77 m N/m,不能浸湿煤尘。研究得出在捕捉动态煤尘时,泡沫溶胶的捕尘效果应明显优于水性泡沫和去离子水。展开更多
基金Sponsored by National Natural Science Foundation of China(51174023)5th Special Funding of Postdoctoral Science Foundation of China(2012T50045)
文摘Through the mass balance and thermal balance calculation for a typical OxyCup （or OxiCup） furnace process featuring a capacity of 380 kt/a of steel plant residuMs, the material flow and thermal flow diagrams were firstly obtained. Then, the performance of the main fuel in the OxyCup process, i.e. coke and carbon dust, was ana lyzed, and the results indicated that coke was mainly used as the stock column skeleton for the furnace and exothermal agent with a weak reduction ability; whereas carbon dust was mixed in the C-brick to reduce the iron oxide. In addition, the comparison between OxyCup process and traditional blast furnace process indicated that the reduction and melting processes in the OxyCup process were relatively isolated, while in the traditional blast furnace process, they were mixed with each other in the high temperature zone. Moreover, oxidizing atmosphere is necessary in part of the OxyCup furnaces to ensure the complete combustion of part of the coke, while only reducing atmosphere is al lowed in traditional blast furnaces. Finally, it was confirmed that oxygen enrichment can make a remarkable increase of the energy income and high temperature blast makes oMy a small contribution to energy income as the energy from the combustion of carbon takes up nearly 90% of the total income.
文摘针对传统方法的不足,提出了泡沫溶胶控制煤尘技术,并对泡沫溶胶湿润和黏附煤尘的特性进行了研究。基于湿润性动态接触角模型,分别对水性泡沫、泡沫溶胶和去离子水的湿润性和黏附功进行了对比分析;利用Zisman图对浸湿煤尘的湿润剂临界表面张力值进行了分析。研究得出泡沫溶胶具有较好的煤尘湿润性,起泡能力和较强的黏附功;当润湿剂的表面张力值小于28.32 m N/m,可完全浸湿煤尘,当润湿剂的表面张力值大于73.77 m N/m,不能浸湿煤尘。研究得出在捕捉动态煤尘时,泡沫溶胶的捕尘效果应明显优于水性泡沫和去离子水。
