Process for removing sulfur dioxide from gases and producing gyp

Details Process for removing sulfur dioxide from gases and producing gyp Process for removing sulfur dioxide from gases and producing gyp

1995-10-20

1997-03-25

Straub, Gary P.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

42324308, 42324309, 4232431, 42324311, 423638, C01F 540, C01B 1722

Patent

active

056141580

ABSTRACT:
In a process for removing sulfur dioxide from a gas stream using an aqueous solution of magnesium scrubbing components and subsequent oxidation of the magnesium sulfite produced which is regenerated by addition of lime, a pure magnesium hydroxide product is produced using less oxidation energy requirements by passing a further portion of solution from the oxidizing unit to a further oxidizing unit, oxidizing the same to produce an aqueous solution containing less than 130 ppm sulfite, treating the further portion with lime and separating purified magnesium hydroxide therefrom.

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