天然气电厂新型多元胺基CO_(2)吸收剂试验与应用研究  

Experimental and Application Research of Novel Polyamine-Based CO_(2) Absorbents in Gas-Fired Power Plants

作　　者：黄忠源 金绪良 孟凡钦 殷爱鸣 张丽 陈绍云[2] HUANG Zhongyuan;JIN Xuliang;MENG Fanqin;YIN Aiming;ZHANG Li;CHEN Shaoyun(North China Electric Power Test and Research Institute,China Datang Corporation Science and Technology General Research Institute Ltd.,Shijingshan District,Beijing 100040,China;State Key Laboratory of Fine Chemical Engineering(School of Chemical Engineering,Dalian University of Technology),Dalian 116081,Liaoning Province,China)

机构地区：[1]中国大唐集团科学技术研究总院有限公司华北电力试验研究院,北京市石景山区100040 [2]精细化工全国重点实验室(大连理工大学化工学院),辽宁省大连市116081

出　　处：《发电技术》2025年第2期304-313,共10页Power Generation Technology

基　　金：新疆维吾尔自治区重点研发计划项目(2022A01002-1)。

摘　　要：【目的】燃烧后化学吸收CO_(2)捕集技术因运行能耗和总成本较高,其在燃气电厂规模化脱碳工程应用仍较少。为降低其能耗,特别是再生能耗,有必要进行试验研究以提高化学吸收剂的性能。【方法】通过组成设计、实验室小型试验装置测试研究和工程测试验证,开发了2种新型多元胺吸收剂。【结果】与乙醇胺(MEA)相比,19%二乙氨基乙醇+9%哌嗪+2%乙醇胺(DT01-5)和20%1,4-丁二胺+5%甲基二乙醇胺+5%2-氨基-2甲基-1-丙醇(DT02-3)这2种多元胺的吸收负荷、吸收速率、解吸速率、循环容量性能明显提升,理化性质接近工业装置常用的30%MEA。通过2 m^(3)/h小型试验装置测试,2种吸收剂的能耗与MEA相比分别降低了15.84%和9.32%。3000 m^(3)/h工业测试结果表明:与MEA相比,2种吸收剂的再生热耗分别降低了32.89%和39.52%,捕集电耗分别降低了9.83%和16.14%,其他性能指标均有不同程度的提升,运行总成本分别下降了25.95%、34.14%。【结论】所开发的2种新型多元胺吸收剂均有较好商业应用潜力。[Objectives]Currently,chemical absorption CO_(2) capture technology used in post-combustion is rarely applied in large-scale decarbonization projects in gas-fired power plants due to its high operational energy consumption and total costs.In order to reduce the energy consumption,particularly the regeneration energy consumption,it is necessary to carry out experimental research to improve the performance of chemical absorbents.[Methods]Two novel polyamine-based absorbents are developed through composition design,laboratory testing with small-scale experimental setups,and engineering validation.[Results]Compared to monoethanolamine(MEA),the two polyamine absorbents—19%diethylaminoethanol+9%piperazine+2%MEA(DT01-5)and 20%1,4-butanediamine+5%methyldiethanolamine+5%2-amino-2-methyl-1-propanol(DT02-3)—significantly improve absorption loading,absorption rate,desorption rate,and cyclic capacity.Their physicochemical properties are close to those of the 30%MEA commonly used in industrial plants.Through testing on a 2 m^(3)/h small-scale experimental setup,the energy consumption of the two absorbents is reduced by 15.84%and 9.32%,respectively,compared to that of MEA.The 3000 m^(3)/h industrial test results show that the regeneration heat consumption of the two absorbents decreases by 32.89%and 39.52%,respectively,compared to MEA,while the capture power consumption decreases by 9.83%and 16.14%,respectively.Additionally,other performance indicators improve to varying degrees,resulting in total operating cost reductions of 25.95%and 34.14%,respectively.[Conclusions]The two novel polyamine absorbents demonstrate strong potential for commercial applications.

关 键 词：燃气电厂 碳捕集、利用与封存(CCUS) 热耗 电耗 吸收剂 多元胺 化学吸收 

分 类 号：TK09[动力工程及工程热物理] TM611.24[电气工程—电力系统及自动化]