申请人:THE DOW CHEMICAL COMPANY
公开号:EP0242938A2
公开(公告)日:1987-10-28
Soluble chemical compounds having a high affinity for hydroxyl radicals are effective stabilizers for chelating agents used in the hydrogen sulfide removal process. The stabilizers include water-soluble aromatic compounds, bromide ions, iodide ions, cyanides, nitrites, amino acids, sugars, ascorbates, alcohols, polyols, aliphatic aldehydes, soluble organic compounds having unsaturated carbon-carbon bonds, dimethyl sulfoxide, organic disulfides, alkyl amines, and formates. The aromatic compounds have the additional benefit of combining with hydroxyl radicals to form chelating agents.
对羟基自由基具有高亲和力的可溶性化合物是去除
硫化氢过程中使用的
螯合剂的有效稳定剂。稳定剂包括
水溶性芳香族化合物、
溴离子、
碘离子、
氰化物、
亚硝酸盐、
氨基酸、
糖类、
抗坏血酸盐、
醇类、多元醇、脂肪族醛、具有不饱和碳-碳键的可溶性有机化合物、
二甲亚砜、有机二
硫化物、烷基胺和
甲酸盐。芳香族化合物还能与羟基自由基结合形成
螯合剂。