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在电解法生产双氧水工序中,需对阳极铂金铝棒表面涂装聚乙烯以防止电解液对它的腐蚀。过去,一直沿用浸涂聚乙烯的老工艺,即利用一立方米容积、200℃温度的鼓风式恒温箱,将铂金铝棒单根悬挂在箱内进行加热。被加热好的阳极铂金铝捧,迅速插入干燥、干净和一定细度的聚乙烯粉末中,依靠铝棒本身的热量,熔融粘附在铂金铝棒表面上的聚乙烯粉末,使聚乙烯形成连续保护层并牢固地贴结在铝棒上,然后反复加热浸涂2～3次。恒温箱的加热电炉丝装在箱的底部,由鼓风机调节箱内温度。此法具有很多缺点,例如,升温慢、温度低、箱内温度不均匀、开启箱门时散温快,再升温时能耗高,铝棒上的聚乙烯涂层易因过热熔化滴落至箱底而燃烧,铝棒被烟熏黑,恶化操作环境。同时,熔融的聚乙烯滴落在恒温箱底部,电热
In the electrolytic hydrogen peroxide production process, the surface of the anodized platinum aluminum rod is coated with polyethylene to prevent the electrolyte from corroding it. In the past, we used the old technique of dip-coating polyethylene, that is, using a blast furnace with a volume of one cubic meter and a temperature of 200 DEG C, the platinum aluminum rod was hung in the box for heating. The heated anodized aluminum foil is rapidly inserted into a dry, clean and finely divided polyethylene powder. The polyethylene powder is fused to the surface of the platinum aluminum rod by means of the heat of the aluminum rod to make the polyethylene continuous Protective layer and firmly bonded to the aluminum rod, and then repeatedly heated dip coating 2 to 3 times. Incubator heating wire installed in the bottom of the box, the blower to adjust the temperature inside the box. This method has many shortcomings, for example, slow heating, low temperature, uneven temperature inside the box, open the door when the rapid temperature, heating and then high energy consumption, aluminum rods on the polyethylene coating easily melted due to overheating dripping to Bottom and burning, aluminum rods are smoked black, worsening the operating environment. At the same time, the molten polyethylene dripped in the bottom of the incubator, heated