制药厂生产的自用活性炭中,有一部分必须经过酸洗,以保证其中不含灰分及其他金属杂质。由于在酸洗工艺上使用80℃的稀盐酸,所以金属设备的腐蚀问题很为突出。我厂真空洗炭设备中的联箱采用优良耐腐蚀金属材料—钛,取得良好效果。钛是比较活泼的金属,对氧有极高的亲和力,能形成一层薄而坚固的氧化保护膜, Some of the self-use activated carbons produced by pharmaceutical factories must be pickled to ensure that they do not contain ash and other metal impurities. Due to pickling process using 80 ℃ dilute hydrochloric acid, so the corrosion of metal equipment is very prominent. I plant vacuum washing carbon equipment in the header with excellent corrosion-resistant metal material - titanium, and achieved good results. Titanium is a more lively metal that has a very high affinity for oxygen and forms a thin and strong oxidation protective film.