Sodium Chloride → Calcium Carbonate

HRID 1588183Notes

Reaction equation

HRID 1588183 reaction equation
[Cl-].[Na+].[Ca:3].[Mg:4].[C:5](=[O:8])([O-:7])[O-:6].[Na+].[Na+].[OH-:11].[Ca+2].[OH-].[S:14]([O-:18])([O-:17])(=[O:16])=[O:15].[Na+].[Na+]>[Cl-].[Na+].O>[C:5](=[O:6])([O-:8])[O-:7].[Ca+2:3].[OH-:15].[Mg+2:4].[OH-:11].[S:14]([O-:18])([O-:17])(=[O:16])=[O:15].[Ca+2:3]

Participants

10

Reactant 6

HCID 5234Sodium ChlorideHCID 10340Sodium CarbonateHCID 24436Sodium SulfateHCID 5460341CalciumHCID 5462224MagnesiumHCID 6093208Calcium Hydroxide

Product 3

HCID 10112Calcium CarbonateHCID 24497Calcium SulfateHCID 73981Magnesium Hydroxide

Reagents, catalysts & solvents 1

HCID 57417360Sodium chloride; waterSolvent2×

Procedure

A process for the preparation of sodium chloride from crude brine containing calcium ions and magnesium ions which comprises adding sodium carbonate, calcium hydroxide and sodium sulphate to said brine to form calcium carbonate, magnesium hydroxide and calcium sulfate as insoluble compounds; separating said insoluble compounds from the crude brine to obtain a purified brine; evaporating water from the purified brine and separating the sodium chloride crystallized in the process leaving a mother liquor; and, crystallizing and separating sodium sulfate from the mother liquor and returning the sodium sulfate to the crude brine to be purified.

Sources & evidence

ORD record
ord-5b76f0fe8ca945768f25ad56ee05662e
Source dataset
uspto-grants-1993_06
Patent number
US05221528

Reaction notes

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