Device for preparing high-concentration nitric acid

• Main Authors: MENG TIANHAO, MEI XUE, WANG WENBIN, WANG QI, DU SHUMING, WANG HE
• Format: Patent
• Language: Chinese; English
• Published: 15.10.2021
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The utility model relates to the technical field of preparation of high-concentration nitric acid, and discloses a device for preparing high-concentration nitric acid, which comprises a dilute nitric acid storage tank, a concentration component, an extractive distillation component, a decolorization component and a regeneration component, a base is arranged at the bottom of the dilute nitric acid storage tank; a liquid outlet of the dilute nitric acid storage tank is connected with the pipe body I; the first pipe body is connected with a feeding pump; the concentration assembly comprises a nitric acid concentrator, a primary condenser, a secondary condenser and a nitric acid collecting tank; the nitric acid concentrator, the first-stage condenser, the second-stage condenser and the nitric acid collecting tank are arranged at the top of the base; the purification efficiency is high, and 10wt% dilute nitric acid can be purified into concentrated nitric acid with the concentration as high as 99wt%; the concentra