【摘要】 综述了亚氨基二乙酸的生产方法,包括氯乙酸甘氨酸法、氨代氯乙酸法、氮川三乙酸法、氢氰酸直接合成法、二乙醇胺脱氢法和单乙醇胺法。目前国内在生产丙烯腈过程中每年副产氢氰酸10万t,有原料优势的企业采用氢氰酸直接合成法工艺生产亚氨基二乙酸。这样不仅可以有效利用氢氰酸资源,还可以促进我国草甘膦行业实现清洁生产。更多还原

【Abstract】 The technologies for producing iminodiacetic acid, e.g. chloroacetic acid-glycine method, chloroacetic acid ammoniation, ammonium triacetate, direct synthesis based on hydrocyanic acid, diethanolamine dehydrogenation and ethanolamine methods are introduced. At present, the output of hydrocyanic acid produced as a by-product in production of acylonitrile is reached 100000 t/a, a suggestion is offered on producing iminodiacetic acid by direct synthesis based on hydrocyanic acid for those enterprises having advantage in hydrocyanic acid resource. Thus, it can not only utilize hydrocyanic acid effectively, but also accelerate realizing green production in China’s glyphosate industry.更多还原