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3.去除水分问题: 水分的存在,对氯化氰聚合制三聚氯氰是不利的,既能在聚合过程中生成副产物使触媒中毒,又会因Cl_2和HCl的存在导致聚合装置的腐蚀,所以聚合体系的干燥问题历来都十分重视。干燥分两个方面:触媒的预干燥和原料气的去湿,下面分别加以讨论: ⅰ.触媒的预干燥:也有人把它叫做触媒的活化,就其实质而言,还是干燥去水问题。日特公昭30—5976号提出:触媒活性炭在装入聚合器之前经过强烈的干燥处理是很重
3. Removal of moisture: the presence of water, cyanide cyanide cyanuric chloride is not conducive to the process of cyanide polymerization, both in the polymerization process by-products generated catalyst poisoning, but also due to the presence of Cl_2 and HCl led to the polymerization device corrosion , So the polymerization system has always been the issue of drying. Drying is divided into two aspects: the pre-drying of the catalyst and the dehumidification of the feed gas, which are discussed separately below: i. Pre-drying of the catalyst: It is also known as the activation of the catalyst, and in essence, it is still a problem of drying and dewatering. Japanese Patent Publication No. Sho 30-5976 proposes that the catalyst activated carbon is heavily dried before being charged to the polymerizer