摘要
结合乙二胺合钴具高效脱NO的特性,选取与乙二胺合钴配位结构相似的氨羧化合物———甘氨酸,替代乙二胺作钴配合物配体进行脱NO研究,以期解决乙二胺易挥发、难运输等问题.实验表明:甘氨酸合钴的初始浓度对NO脱除影响显著,随浓度的增大NO脱除率提高;吸收剂的pH值和吸收反应温度也对NO脱除率影响显著,最佳pH值为中性至弱碱性,最佳反应温度50℃左右;同时脱硫脱氮时,尿素的加入因其可促进SO2-3的氧化,从而提高甘氨酸合钴同时脱硫脱氮能力.
According to the high NO removal feature of Co（en）3^3＋ , triglycine cobalt was chosen to absorb and catalytically oxidize NO thanks to the similar coordination structures of triglycine cobalt and Co（en）3^3＋. Ethylene diamine was replaced by glycine to prevent its volatility and difficult transport. It was observed that the NO removal was influenced by the initial concentration of triglycine cobalt, absorption reaction pH value and temperature. The NO removal was enhanced by the rise of triglycine cobalt initial concentration. The optimum pH was neutral or weakly basic. The optimum absorption reaction temperature was 50℃. The addition of urea could increase the ability of triglycine cobalt to simultaneously remove NO and SO2, for urea could accelerate the oxidation of SO3^2-.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2006年第4期943-947,共5页
CIESC Journal
关键词
烟气
脱NO
甘氨酸合钴
同时脱硫脱氮
尿素
flue gas
removing NO
triglycine cobalt
simultaneously remove SO2 and NO
urea
