초록 ▼

A regenerating process comprises leaching a combustion ash with water so as to dissolve same and form a pregnant leach liquor containing the additive which is separated from the solid residue. The pregnant leach liquor is thereafter adjusted with a base precipitating agent so as to precipitate a com

A regenerating process comprises leaching a combustion ash with water so as to dissolve same and form a pregnant leach liquor containing the additive which is separated from the solid residue. The pregnant leach liquor is thereafter adjusted with a base precipitating agent so as to precipitate a compound of the additive which is then recovered by liquid solid separation. The process of the present invention is particularly useful for regenerating said recycling sulfur capturing additives used in hydrocarbon formulations which are burned as fuels, particularly, hydrocarbon in water emulsions formed from viscous hydrocarbon materials characterized by high sulfur and metals contents.

대표청구항 ▼

A process for regenerating a sulfur capturing additive used in the preparation of a hydrocarbon in water emulsion for combustion as a fuel comprising: (a) forming a hydrocarbon in water emulsion by admixing a sulfur containing hydrocarbon and water with an emulsifier and a water soluble sulfur captu

A process for regenerating a sulfur capturing additive used in the preparation of a hydrocarbon in water emulsion for combustion as a fuel comprising: (a) forming a hydrocarbon in water emulsion by admixing a sulfur containing hydrocarbon and water with an emulsifier and a water soluble sulfur capturing additive wherein said sulfur capturing additive is selected from the group consisting of Na+, K+, Li+, Ca++, Ba++, Mg++, Fe+++and mixtures thereof; (b) burning said emulsion so as to form a combustion ash containing said water soluble additive as a sulfate compound; (c) leaching said combustion ash wherein said combustion ash is leached with water in a water to ash ratio in ml to grams of 1:1 to 30:1 so as to dissolve said water soluble additive sulfate compound to form a pregnant leach liquor containing said additive; (d) separating said pregnant leach liquor containing said additive; (e) adjusting said pregnant leach liquor with a base precipitating agent wherein said base precipitating agent is selected from the group consisting of NH4OH, NaOH, Ca(OH)2, NaCO3 and mixtures thereof wherein said pregnant leach liquor is adjusted with said base to a pH of greater than 7 so as to precipitate an additive compound; and (f) recovering said additive compound.