摘要
化学吸收法是现阶段燃烧后CO_(2)捕集大规模应用的主要技术路线,但其运行和投资成本高是技术难题。该文采用基于有机胺构效关系开发的低再生能耗少水胺吸收剂,在真实燃烧后烟气条件下的中试平台上,试验研究少水胺吸收剂的CO_(2)捕集率、再生能耗、挥发性胺排放等性能,并通过流程模拟与成本测算,评估技术经济性。中试结果表明,烟气流量为260~280 m^(3)/h,CO_(2)浓度(干基)约12%,少水胺体系(水质量浓度约15%)实现稳定运行,CO_(2)捕集率高于90%,再生能耗低至2.35 GJ/t CO_(2),胺挥发排放较高(约110~380 mg/m^(3))。在Aspen Plus建立10000 m^(3)/h烟气CO_(2)捕集工艺流程,相比常规一乙醇胺(monoethanolamine,MEA)工艺,少水胺工艺系统的投资成本降低12%,运行成本降低20%。该少水胺吸收剂具有CO_(2)捕集率高、再生能耗低、系统投资和运行成本低等优势,有望在工业示范中应用。该文研究结果可为万t级/年CO_(2)捕集示范工程的设计提供一定依据。
Chemical absorption is currently an available technology for scaling up post-combustion CO_(2)capture.The main challenge is high operating and capital cost.Water-lean amine solvent previously developed based on structure-activity relationship is tested in a real post-combustion flue gas pilot to investigate CO_(2)capture efficiency,regeneration energy,and volatile amine emission.Process modeling and techno-economic assessment are conducted.Pilot results suggest stable operation of water-lean amine system at flue rate of 260~280 m^(3)/h and CO_(2)concentration(dry)of 12%.CO_(2)capture efficiency is 90%,regeneration energy is 2.35 GJ/t CO_(2),and volatile amine emission is 110~380 mg/m3.Process modeling in Aspen Plus with gas rate of 10000 m^(3)/h indicates 12%lower capital cost and 20%lower operating cost than monoethanolamine(MEA)process.This water-lean amine is promising for industrial application to achieve high CO_(2)removal,reduced regeneration energy,and cost reduction.This study provides reference for CO_(2)capture demonstration design.
作者
刘飞
祁志福
方梦祥
丁浩然
LIU Fei;QI Zhifu;FANG Mengxiang;DING Haoran(Zhejiang Baima Lake Laboratory Co.,Ltd.,Hangzhou 310051,Zhejiang Province,China;Zhejiang Energy R&D Institute Co.,Ltd.,Hangzhou 311121,Zhejiang Province,China;State Key Laboratory of Clean Energy Utilization(Zhejiang University),Hangzhou 310027,Zhejiang Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2024年第10期3897-3904,I0012,共9页
Proceedings of the CSEE
基金
浙江省“尖兵”“领雁”研发攻关计划(2024SSYS0066)
浙江省自然科学基金项目(LQ24E060005)。
关键词
烟气
CO_(2)捕集
少水胺
中试试验
再生能耗
胺排放
工艺模拟
技术经济
flue gas
CO_(2)capture
water-lean amine
pilot test
regeneration energy
amine emission
process modeling
techno-economic
