bottom condenser

The melting and condensing trunk is used to catch the phthalic anhydride gas made by oxidation reaction.

苯酐生产用热熔冷凝箱用于捕集氧化后生成的苯酐气体,原来采用的冷热介质都为导热油,导热油长期高温使用易老化,还需要配套导热油泵、贮油槽等设施。