Stabilization of calcium-based slurries for sox reduction by in-

Details Stabilization of calcium-based slurries for sox reduction by in- Stabilization of calcium-based slurries for sox reduction by in-

1994-01-10

1995-11-21

Langel, Wayne

Chemistry of inorganic compounds

With additive

For stabilizing crystal size or shape

423267, 423268, 4232421, 42324301, 42324308, 25218232, C01F 1100, B01D 5350

Patent

active

054684609

ABSTRACT:
More reliable removal of sulfur oxides (SO.sub.x) from combustion effluents by in furnace injection is achieved by stabilizing slurries of calcium carbonate (limestone), calcium oxide (lime) and calcium hydroxide (hydrated lime) for extended periods of time and during in-furnace injection. The slurries are stabilized by a stabilization system comprising a generally hydrophobic surfactant having an HLB of less than about 8 and a more hydrophilic surfactant having an HLB of at least about 8, wherein the HLB values of the hydrophobic and the hydrophilic surfactants differ by at least about 3.

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