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我国第一套大型电影胶片生产中的醋酸回收装置,由于回收介质中含有高氯酸根,对设备造成了严重的腐蚀,一台12mm厚的含钼不锈钢制醋酸回收塔,半年左右即被腐蚀穿孔,影响全厂生产。为了解决腐蚀问题,研究耐高温醋酸腐蚀的糠酮酚醛胶泥,并用此胶泥对醋酸回收塔进行了砖板衬里,解决了该塔的腐蚀问题。一、醋酸回收塔腐蚀原因分析和防护措施选择醋酸回收工序主要承担醋酸纤维素生产
China’s first large-scale film production of acetic acid recovery unit, due to the recovery medium containing perchlorate, the equipment caused serious corrosion, a 12mm thick molybdenum stainless steel acetate recovery tower, about half a year is corroded perforation , Affect the whole plant production. In order to solve the problem of corrosion, the study of high temperature resistant acetic acid corrosion of the furfural phenolic cement, and the use of this clay on the acetic acid recovery tower brick lining to solve the corrosion of the tower. First, the acetic acid recovery tower corrosion analysis and protective measures of choice Acetic acid recovery process is mainly responsible for the production of cellulose acetate