Sodium Bicarbonate → Sodium Bicarbonate

HRID 2195481Notes

Reaction equation

HRID 2195481 reaction equation
[C:1](=[O:4])([OH:3])[O-:2].[Na+:5]>O>[C:1](=[O:2])([OH:4])[O-:3].[Na+:5].[C:1](=[O:2])([OH:4])[OH:3].[Na+:5].[C:1](=[O:2])([O-:4])[O-:3].[C:1](=[O:2])([OH:4])[OH:3].[Na+:5]

Participants

4

Reactant 1

HCID 516892Sodium Bicarbonate

Product 2

HCID 516892Sodium BicarbonateHCID 22936102HCID 22936102, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

In other embodiments for the co-production of sodium carbonate and bicarbonate, a first purge liquor stream exits the sodium carbonate monohydrate crystallizer and is passed to a bicarbonate crystallizer (or reactor) under crystallization conditions to form bicarbonate crystals and to form a second purge liquor stream containing water-soluble impurities. The second purge liquor stream exiting the sodium bicarbonate crystallizer is then passed to a tailings pond under crystallization conditions to form a solid comprising sodium bicarbonate and/or sodium sesquicarbonate and containing these water-soluble impurities, at least a portion of such solid being recovered and dissolved in an unsaturated aqueous sodium carbonate-containing solution for recycling in the co-production process. Alternatively or additionally, some or all of the first purge liquor stream may be treated with magnesium before it is fed to the sodium bicarbonate crystallizer and some or all of the second purge liquor stream may be treated with magnesium before it is fed to the tailings pond.

Workup

  1. customto form a second purge liquor stream
  2. customis then passed to a tailings pond under crystallization conditions

Sources & evidence

ORD record
ord-ec27e27f3a4a48b7bdc5229e4b0f2118
Source dataset
uspto-grants-2012_12
Patent number
US08337571B2

Reaction notes

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