A method and device for synchronously removing sulfur and nitric acid to prepare sulfuric acid and nitric acid
A technology for removing sulfur and sulfuric acid, applied in chemical instruments and methods, nitric acid, separation methods, etc., can solve problems such as low resource utilization, large land occupation, and difficult separation of reaction products
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Embodiment 1
[0037] Embodiment 1: at room temperature, utilize anion-exchange membrane, monovalent anion-exchange membrane and cation-exchange membrane to divide reaction chamber into cathode chamber, sulfuric acid chamber, nitric acid chamber, anode chamber, add DC voltage outside reaction chamber, will contain sulfur dioxide The gas with nitrogen oxides is passed into the cathode chamber, and the gas is oxidized and absorbed by the electro-Fenton reaction of the cathode chamber solution, and then discharged into the anode chamber for secondary absorption by the anode chamber solution, and the tail gas is directly discharged after further treatment (emitted after absorbing nitrogen); the anion NO produced by the reaction in the cathode chamber - , SO 4 2- Enter the sulfuric acid chamber through the anion exchange membrane, where NO - Then enter the nitric acid chamber through the monovalent anion exchange membrane to generate nitric acid, and the SO remaining in the sulfuric acid chambe...
Embodiment 2
[0042] Embodiment 2: at room temperature, utilize anion-exchange membrane, monovalent anion-exchange membrane and cation-exchange membrane to divide reaction chamber into cathode chamber, sulfuric acid chamber, nitric acid chamber, anode chamber, add DC voltage outside reaction chamber, will contain sulfur dioxide The gas with nitrogen oxides is passed into the cathode chamber, and the gas is oxidized and absorbed by the electro-Fenton reaction of the cathode chamber solution, and then discharged into the anode chamber for secondary absorption by the anode chamber solution, and the tail gas is directly discharged after further treatment ; The anion NO produced by the reaction in the cathode compartment - , SO 4 2- Enter the sulfuric acid chamber through the anion exchange membrane, where NO - Then enter the nitric acid chamber through the monovalent anion exchange membrane to generate nitric acid, and the SO remaining in the sulfuric acid chamber 4 2- produces sulfuric aci...
Embodiment 3
[0046] Embodiment 3: at room temperature, utilize anion exchange membrane, monovalent anion exchange membrane and cation exchange membrane to divide reaction chamber into cathode chamber, sulfuric acid chamber, nitric acid chamber, anode chamber, add DC voltage outside reaction chamber, will contain sulfur dioxide The gas with nitrogen oxides is passed into the cathode chamber, and the gas is oxidized and absorbed by the electro-Fenton reaction of the cathode chamber solution, and then discharged into the anode chamber for secondary absorption by the anode chamber solution, and the tail gas is directly discharged after further treatment ; The anion NO produced by the reaction in the cathode compartment - , SO 4 2- Enter the sulfuric acid chamber through the anion exchange membrane, where NO - Then enter the nitric acid chamber through the monovalent anion exchange membrane to generate nitric acid, and the SO remaining in the sulfuric acid chamber 4 2- produces sulfuric aci...
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