Phosphoric Acid → Phosphoric Acid

HRID 971589Notes

Reaction equation

HRID 971589 reaction equation
[P:1]([OH:5])([O-:4])([O-:3])=[O:2].[Ca+2:6].P(=O)(O)(O)[OH:8].[S:12](=[O:16])(=[O:15])([OH:14])[OH:13].OP(O)(O)=O>>[P:1](=[O:2])([OH:5])([OH:4])[OH:3].[OH2:8].[S:12]([O-:16])([O-:15])(=[O:14])=[O:13].[Ca+2:6]

Participants

5

Reactant 3

HCID 1004Phosphoric AcidHCID 1118Sulfuric Acid2×HCID 101970284HCID 101970284, compound

Product 2

HCID 1004Phosphoric AcidHCID 10130067Calcium Sulfate Hydrate

Procedure

In the meantime, the other portion of the clarified monocalcium phosphate/phosphoric acid solution from intermediate storage 19 is passed by line 30 to crystallizer 31 and reacted with at least a stoichiometric amount of sulfuric acid from line 32. The sulfuric acid reacts with the MCP/H3PO4 solution to produce phosphoric acid and calcium sulfate hydrate and this slurry is passed by line 33 to thickener 34 wherein concentration of the slurry is achieved and the underflow slurry is then passed by line 35 to filter 36. The solid calcium sulfate hydrate in substantially pure form is recovered by line 37.

Sources & evidence

ORD record
ord-3e118061ab45464f887c840a4bf0f9ef
Source dataset
uspto-grants-1979_07
Patent number
US04160657

Reaction notes

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