新型MEA-AMP混合胺吸收剂的抗降解剂研究  

Inhibitor for new MEA-AMP blended amine absorbent

作　　者：黄宇辉 方梦祥[1] 王涛[1] 徐燕洁 夏芝香 HUANG Yu-hui;FANG Meng-xiang;WANG Tao;XUYan-jie;XIA Zhi-xiang(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《能源工程》2021年第5期35-42,共8页Energy Engineering

基　　金：国家重点研发计划项目(2017YFB0603300)。

摘　　要：开发新型低能耗低降解吸收剂是目前化学吸收碳捕集技术的关键,研究了新型混合胺MAH吸收剂的氧化降解行为,从抗降解剂的作用机理出发,选用不同种类的抗氧化剂[对苯二酚,亚硫酸钠,偏钒酸钠,乙二胺四乙酸(EDTA)],并从吸收剂组分降解率、CO_(2)担载量、溶液相对碱度三个方面衡量抗降解剂的作用效果。通过气相色谱质谱联用技术分析降解产物,推测吸收剂的氧化降解过程。实验表明,在MEA-AMP(MAH)混合胺吸收剂降解过程中,相比于AMP、MEA,更易首先发生氧化反应,降解过程产生的氧化产物会继续与AMP和MEA发生反应,加快降解反应的进行。抗降解剂中,金属捕获剂EDTA的抗降解效果最好,金属离子在氧化降解进程中起到了关键的作用。The development of a new type absorber with low energy consumption and low degradation is the key to the chemical absorption carbon capture technology, the degradation behavior of a new hybrid amine MAH oxidative absorbent is studied. According to the mechanism of action of antidegradant, different kinds of antioxidants [hydroquinone, sodium sulfite, sodium vanadate, ethylenediamine tetraacetic acid(EDTA)] are chosen, and the functions of antidegradang are evaluated in respect of the absorber components relative degradation rate, CO_(2) bear loads, solution alkalinity. The degradation products were analyzed by gas chromatography-mass spectrometry(GC-MS) and the oxidation degradation process of the absorbent was evaluated. Experimental results that in the degradation process of MEA-AMP(MAH)blended amine absorbent, compared with AMP, MEA is more likely to occur first oxidation reaction, oxidation products generated in the degradation process will continue to react with AMP and MEA, accelerate the degradation reaction.Among the anti-degradation agents, the metal trapping agent EDTA has the best anti-degradation effect, and metal ions play a key role in the process of oxidative degradation.

关 键 词：混合胺吸收剂 氧化降解 抗降解剂 化学吸收法 

分 类 号：X511[环境科学与工程—环境工程]