6 Pharmaceutical intermediate high purity nitric acid production plant Abstract 5 Pharmaceutical intermediate high purity nitric acid production plant, including : rectifying column (ElOl), pump (Ji01), tank (F101), tank (F102), ultra-clean filter (LIO); among them, pump (JIO) is connected respectively to tank (F102) and rectifying column (E101), tank (F102) is connected respectively to rectifying column (E10) and ultra-clean filter (LIO); among them, inner pot diameter of rectifying 10 column (E10) is 1100-1200 mm. Figure 1 1/1 IaigStean1 IIromT t[C' KC-t iT I-" stationi _ _ _ _ - ~Nit rogen F1092 F 0" jo- EIO 101 Fni shed clean packaging cOrd m coi-satc, backt thie -he-aling station Figure 1