用于高炉煤气富集的复合有机胺溶液解吸特性  

Desorption Characteristics of Complex Organic Amine Solutions for BF Gas Concentration

作　　者：刘应书[1,2] 李皓琰[1] 张辉[1,2] 李小康[1] 郭占成[3] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]北京科技大学冶金工业节能减排北京市重点实验室,北京100083 [3]北京科技大学钢铁冶金新技术国家重点实验室,北京100083

出　　处：《钢铁研究学报》2014年第11期34-39,共6页Journal of Iron and Steel Research

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-SD-12-013A)

摘　　要：针对高炉煤气吸收法脱碳富集,实验研究了复合有机胺溶液对CO2的解吸特性。分别研究了吸收CO2达到饱和的二元复合有机胺DEA-DETA、DEA-TETA、MDEA-DETA、MDEA-TETA溶液的解吸曲线。结果表明,与DEA溶液相比,DEA-DETA溶液解吸速率峰值提高约33.6%,对应的解吸温度下降约4℃;DEA-TETA溶液解吸速率峰值提高约26.8%,对应的解吸温度相近。与MDEA溶液相比,MDEA-DETA溶液在70.1-77.8℃温度区间内解吸速率有所提高,MDEA-TETA溶液在66.9-90℃温度区间内解吸速率有所提高。4种复合有机胺溶液的解吸速率峰值分布为：7.533mL/s（MDEA-TETA）〉6.806mL/s（MDEA-DETA）〉5.603mL/s（DEA-DETA）〉5.317mL/s（DEA-TETA）;解吸速率峰值对应的解吸温度分布为：90.3℃（DEADETA）〈90.9℃（MDEA-DETA）〈91.8℃（MDEA-TETA）〈94.6℃（DEA-TETA）。In order to concentrate blast-furnace（BF）gas by adsorption,an experimental study on the CO2 desorption characteristics of complex organic amine was carried out.Four kinds of complex organic amine solutions,for example DEA-DETA,DEA-TETA,MDEA-DETA,MDEA-TETA,were investigated.The experiment results show that,comparing with the DEA-solution,the complex solution of DEA-DETA owns higher maximum-desorption-rate with a promotion of 33.6% and lower corresponding desorption temperature with a decrement of about 4℃;the complex solution of DEA-TETA has higher maximum-desorption-rate with a promotion of 26.8% and similar corresponding desorption temperature.Comparing with MDEA-solution,both of MDEA-DETA and MDEA-TETA have higher desorption-rate when their temperatures are respectively between 70.1-77.8and 66.9-90 ℃.The results also show that,the maximum-desorption-rates of those solutions are in order of 7.533mL/s（MDEA-TETA）〉6.806mL/s（MDEA-DETA）〉5.603mL/s（DEA-DETA）〉5.317mL/s（DEA-TETA）;the corresponding desorption temperatures are in order of 〈90.3 ℃（DEA-DETA）90.9 ℃（MDEA-DETA）〈91.8 ℃（MDEA-TETA）〈94.6 ℃（DEA-TETA）.

关 键 词：复合有机胺溶液 CO2解吸 高炉煤气 吸收法脱碳 

分 类 号：TF536[冶金工程—钢铁冶金]