Sodium bicarbonate
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Sodium bicarbonate is produced through the reaction of sodium carbonate, carbon dioxide, and water. The process involves saturating a solution of soda ash in a carbonating tower where compressed carbon dioxide is admitted counter-currently from the bottom. The temperature is maintained at 40°C to form a bicarbonate suspension, which is then filtered, washed, centrifuged, and dried to produce high purity sodium bicarbonate.
Sodium bicarbonate
- 1. SODIUM BICARBONATE Prepared by- Mr. Vishal B. Thakare (M.Tech, Chemical SVNIT Surat) Assistant Professor PARUL UNIVERSITY Vadodara [email protected]
- 2. SODIUM BICARBONATE Sodium bicarbonate (NaHCO3) is also known as backing powder. Raw material Basis: 1000kg of Sodium bicarbonate (98% yield) Sodium carbonate = 643.74kg Carbon dioxide = 267.28kg Water = 109.40kg Reaction Na2CO3 + CO2 + H2O 2NaHCO3 Sodium bicarbonate
- 4. Saturated solution of soda ash is passed from the top of a carbonating tower. Compressed CO2 gas is admitted in counter currently from the bottom of the tower. The temperature of the tower is maintained at 40°C by the cooling coils, provided above the bottom of the tower. The suspension of bicarbonate formed is removed from the bottom of the tower, filtered and washed on a vacuum rotary drum filter. After centrifugation, the product is dried on continuous belt conveyor at 70°C to get 99.9% pure sodium bicarbonate.