基于楼宇通风系统的低功耗碳捕集装置应用与实测  

Application and Measurement of Low Power Consumption Carbon Capture Device Based on Building Ventilation System

作　　者：张明 薛菲 余建飞 熊勇 李阳海 ZHANG Ming;XUE Fei;YU Jianfei;XIONG Yong;LI Yanghai(State Grid Hubei Electric Power Research Institute,Wuhan 430077,Hubei,China;China Three Gorges University,Yichang 443002,Hubei,China;Hubei Fangyuan Dongli Electric Power Science&Research Co.,Ltd.,Wuhan 430077,Hubei,China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [2]三峡大学,湖北宜昌443002 [3]湖北方源东力电力科学研究有限公司,湖北武汉430077

出　　处：《建筑科学》2023年第10期126-133,共8页Building Science

基　　金：国网湖北电力创新工作室科技项目(B31532226718)。

摘　　要：利用非集中通风楼宇的残余风压,应用了分布吸附+集中解吸的CO_(2)捕集装置,并进行了测试分析。采用MDEA混合液作为碳捕集材料,针对不同CO_(2)浓度的通风空气开展了脱除效果验证和循环测试。结果表明,在511~1310 mg/L的CO_(2)空气浓度范围内,该装置运行20 h后,对CO_(2)捕集率大于83%,60 h可达到饱和。解吸部分所释放的CO_(2),其纯度达到99.5%,并且持续30 min即可完成12 L溶液的解吸和再生。碳捕集材料的综合负载为1.94~2.18 mol/kg,装置的综合能耗为0.36 kW·h,完成了对254 gCO_(2)的捕集过程。另外,本装置对MDEA材料具有降解抑制作用。通过6次的循环测试,CO_(2)脱除效率依然可达到80%以上。本研究结果有助于优化现有的空气直接捕集工艺,配合新能源供电,可实现局部环境的“负碳”状态,为碳减排技术的发展提供技术支撑。The residual air pressure in a non-centrally ventilated building was utilized and a carbon capture device with distributed adsorption&unified desorption was tested and analyzed.The removal effect verification and cycle test were made for ventilation air with different CO_(2) concentrations using MDEA mixture as a carbon capture material.The results showed that the capture rate of CO_(2) was over 83%after 20 h operation with the range of 511~1310 mg/L CO_(2) air concentrations.The carbon capture material was saturated in 60 hours.The CO_(2) released from the desorption part had a purity of 99.5%.It took 30 min for 12 L of mixed solution to desorb and regenerate.The CO_(2) load of carbon capture material was 1.94~2.18 mol/kg,while the comprehensive energy consumption of the device was 0.36 kW·h with 254 gCO_(2) captured.In addition,the device had a degradation inhibition effect on MDEA materials.After six cycle tests,the CO_(2) removal efficiency can still reach over 80%.The results of this study can help optimize the direct air capture process.With new energy power supplied,it can realize"local carbon negative"and support the development of carbon emission reduction technology technically.

关 键 词：碳减排 碳捕集装置 残余空气 能耗 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]