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Soda ash production process

by:Yixin     2020-03-24
Soda ash manufacturer of soda ash production process are mainly alkaline ammonia soda and league two, ammonia soda is one of the primary industry to produce soda ash at present. Its characteristic is cheap accessible raw materials, ammonia can be recycled, Less loss; Suitable for mass production, easy to mechanization and automation) 。 But the low utilization rate of raw materials, especially NaCl powerusageeffectiveness is not high. The main production process preparation, including brine limestone calcination, ammonia salt water preparation, and its heavy alkali carbonate, separation and calcination, ammonia recovery, etc. The reaction process is as follows: CaCO3 = CaO CaO + H2O + CO2 write - Q = Ca 2+Q NaCl+NH3+H2O+CO2=NaHCO3 ↓+NH4Cl+Q NaHCO3 =Na2CO3+CO2↑+H2O↑+Q NH4Cl+ Ca 2 = Ca 2 + Cl NH3 + H2O + Q al alkaline salt, ammonia and ammonia industrial by-product of carbon dioxide as raw material, production of soda ash and ammonium chloride at the same time, the joint production of soda ash and ammonium chloride, hereinafter referred to as' in-house alkali 'or' union alkali 'main reaction is: NaCl + NH3 + H2O + CO2 = NaHCO3 left + NH4Cl NaHCO3 = write Na2CO3 + CO2 + H2O write borax factory according to the number of join the raw materials and ammonium chloride precipitation temperature, in-house alkali has a variety of technological process. Used more in China: a carbide, two ammonia absorption, salt, ammonium analysis process at low temperature.
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