Manufacturing Of Sodium Bi Carbonate

Manufacturing Of Sodium Bi Carbonate

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  PREPARE BY  SHOAIBABID SIDDIQUI  M. AZAM SIDDIQUI
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   Sodium bicarbonateis white solid compound . It is found crystalline & powder form.  It is commercially known as “BAKING SODA”.  Because it as main component of baking soda.  It decomposes on heating. IN TR OD UC TI ON
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  ON COMMERICAL SCALE, ITIS PREPARED BY PASSING CARBON DI OXIDE GAS ( 𝐶𝑂2) THROUGH THE SATURATED SOLUTION OF SODA ASH ( 𝑁𝑎2 𝐶𝑂3 )
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   SODIUM CARBONATE( 𝑁𝑎2 𝐶𝑂3 )  CARBON DI OXIDE ( 𝐶𝑂2 )  WATER 𝐻2 𝑂
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   THIS ISCHEMICAL COMPOUND.  ITS COMMERICAL NAME IS WASHING SODA.  MELTING POINT : 850℃  ITS DOES NOT DECOMPOSE DUE TO TEMPERATURE .  THIS IS AVAILABLE IN MARKET AS LIGHT SODA & DENSE SODA ASH ( 𝑁𝑎2 𝐶𝑂3. 10𝐻2 𝑂 )
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   (CO2) isa chemical compound . It is a gas at room temperature. It is made of one carbon and two oxygen atoms.  . People and animals release carbon dioxide when they breath out.  Also, every time something organic is burnt (or a fire is made), it makes carbon dioxide.  Plants use carbon dioxide to make food.  is the solid state of CO2 gas below (-78.5 °C)
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   Water isa simple Triatomic molecule.  The consist of 2 item hydrogen & 1 item is oxygen.  The amount of water on the earth 1.35 million 𝑘𝑚3  97% of water consist of sea water.  Sources of water is • Surface water • Underground water
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  𝑁𝑎2 𝐶𝑂3 +2𝐻2 𝑂 + 𝐶𝑂2 2𝑁𝑎𝐻𝐶𝑂3 + 𝐻2 𝑂
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   PREPARATION OFSATURATED SODA ASH SOLUTIOL.  CARBONATION OF SATURATED SODA ASH SOLUTIOL.  FILTRATION OF 𝑁𝑎𝐻𝐶𝑂3.  DRYING OF WET SODIUM BI CARBONATE
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  . Preparation of soda ash Carbonation ofsoda ash Filtration Storage Drying of wet sodium bi carbonation Centrifuging
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  In this section𝑁𝑎2 𝐶𝑂3 is mixed with water to prepare the saturation soda ash solution . This saturated solution of soda ash is now transferred to the next section of carbonation section
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   In thissection, there is long tower similarly to the carbonating tower in soda ash perpartion.in this section the saturated soda ash treated with the compressed 𝐶𝑂2 gas.  Soda ash introduced from the top of carbonating tower and 𝑐𝑜2 𝑔𝑎𝑠 from the bottom.  Reaction takes place forming 𝑁𝑎𝐻𝐶𝑂3  Temperature is controlled at 40℃.  Here, Reaction is 𝑁𝑎2 𝐶𝑂3 + 2𝐻2 𝑂 + 𝐶𝑂2  2𝑁𝑎𝐻𝐶𝑂3 + 𝐻2 𝑂
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   In Thissection 𝑁𝑎𝐻𝐶𝑂3 is separated from the 𝐻2 𝑂 With the help oh Rotary Drum Filter .  The wet 𝑁𝑎𝐻𝐶𝑂3is now transferred the drying section
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   In thissection wet 𝑁𝑎𝐻𝐶𝑂3 is first passed through the centrifuge to remove the lot of water and then dried in dryer at 70℃ 𝑤𝑖𝑡ℎ ℎ𝑜𝑡 𝑎𝑖𝑟 to get dry 𝑁𝑎𝐻𝐶𝑂3  It is 99.9% for drying continuous belt conveyor “OR” tube dryer is used.
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   Sodium bicarbonate is mainly used in the following industries.  Drugs & Medical  Leather  Food product  Baking powder  Etc.
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   THANK YOU