【作者】 沈国良； 赵文凯； 傅承碧； 徐铁军； 阎金城；

【Author】 Shen Guoliang Zhao Wenkai Fu Chengbi Xu Tiejun and Yan Jincheng (School of Petrochemical Engineering of Shenyang University of Technology Liaoyang Campus Liaoyang Liaoning 111003)

【机构】 沈阳工业大学石油化工学院辽阳校区；

【摘要】 研究了由乙二胺、甲醛和亚磷酸直接一步合成乙二胺四甲叉膦酸的新工艺及操作条件。其反应的适宜操作条件为:乙二胺与甲醛、亚磷酸的摩尔配比为1:4:4,反应温度为100-105℃,反应时间为1．5-2．0h。同时,对合成的产品阻垢性能进行了评价。结果表明:合成出的乙二胺四甲叉膦酸及其钠盐对钙垢有较好的阻抑效果。更多还原

【Abstract】 The new synthetic process and operating conditions of ethylenediamine theramethylenephosphonic acid (EDTMP) was studied by one-step synthesis of ethylenediamine, formaldehyde and phosphorous acid. The scale properties was investigated. The optimum synthetic reaction conditions for EDTMP is that mole ratio of ethylenediamine, formaldehyde and phosphorous acid is 1:4: 4, reaction temperature is 100-105℃ and reaction time is 1.5-2.0h. In such conditions, the calcium scale inhibition ability of product is good.更多还原