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Citation: Liao Xiaoyuan, Liu Fang, Huang Jianhan. STUDY ON PRODUCTION OF SODIUM CARBONATE FROM AMMONIUM BICARBONATE AND SODIUM CHLORIDE[J]. Chinese Journal of Applied Chemistry, ;1989, 6(3): 26-30. shu

STUDY ON PRODUCTION OF SODIUM CARBONATE FROM AMMONIUM BICARBONATE AND SODIUM CHLORIDE

1.
Institute of Applied Technology, Wuhan University

Received Date: 22 April 1988
Available Online: 4 October 1988

The raw material NH₄HCO₃ and NaCl in the production of sodium carbonate accordingto the double decomposition NH₄HCO₃+NaCl→NaHCO₃+NH₄Cl (2) are plentiful in China. The main difficulty of the process technologically is the separating NH₄Cl from the mother solotion I. In this paper the method of adding a middle salt,NH₄NO₃ or (NH₄)₂SO₄, has been studied. The middle salts can not change the place of the saturated pointes of the reciprocal system in the dry-salt diagram evidently,but can prolong the waiting time for crystallization of NaHCO₃ in the mother solution Ⅱ. The effect of NH₄NO₃ is much better than that of (NH₄)₂SO₄. In adding NH₄NO₃, the waiting time is prolonged enough to separate tbe crystalline of NH₄Cl and the process of the fomula (2) become practicable.
- Sodium carbonate,
- Middle salt,
- Ammonium bicarbonate,
- Double decomposition
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