| abstract |
A device for preparing sulfite belongs to the field of chemical industry. The method for realizing the device comprises the preparation of the main absorption liquid, the preparation of the auxiliary absorption liquid, the generation of the intermediate slurry and the residual SO 2 Gas reabsorption, target product generation, target product separation, drying, packaging and the like. SO in production of conventional sodium metabisulfite or sodium sulfite 2 Reacting with sodium carbonate in a three-stage bubbling reaction kettle in seriesShould be used. The power consumption of a unit product is up to 235-280 KWh; the process (for preparing sodium metabisulfite or sodium sulfate) only comprises a first-stage bubbling reaction kettle, the gas pressure loss is small, the energy consumption is low, and the power consumption of a unit product is 135-160 KWh generally. |