Acetylene vessel filler composition
AssigneeUnion Carbide Corporation
InventorsEdith M. Flanigen, Brent M. Lok, Norbert R. Mumbach
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Abstract
An aqueous slurry composition which is curable at saturated steam pressure and temperature of 360.degree. to 400.degree. F to form a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising lime, crystalline silica, and a thickening agent selected from the group consisting of (a) polyethylene oxide, (b) amorphous glassy silica, (c) a soluble salt of phosphate and a soluble salt of calcium and (d) a soluble salt of phosphate and a neutralizing acid.
Claims12
An aqueous slurry composition which is curable at saturated steam pressure and temperature of 360.degree. to 400.degree. F. to form a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising lime, crystalline silica, and a thickening agent selected from the group consisting of (a) polyethylene oxide, (b) a soluble salt of phosphate and a soluble salt of calcium, and (c) a soluble salt of phosphate and a neutralizing acid.
A method of forming a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising the steps of:
- (a) admixing water and a soluble phosphate salt with lime such that the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10 percent and the water is in a stoichiometric amount for slaking of the lime;
- (b) mixing crystalline silica, additional water and a soluble salt of calcium to the slaked lime admixture of step (a) to form an aqueous slurry wherein the weight ratio of phosphate ion in the phosphate salt to the calcium ion in the calcium salt is from 1.0 to 1.6, the lime-to-silica weight ratio is 0.6 to 1.0 and the water-to-solid volume ratio is 88-96%;
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- (c) curing the aqueous slurry at saturated steam pressure and temperature of 360.degree. to 400.degree. F. to form said hard porous mass.
A method of forming a hard porous mass suitable for containing dissolved acetylene gas solutions, comprising the steps of:
- (a) admixing water and a soluble phosphate salt with lime such that the weight ratio of phosphate ion in the phosphate salt to lime is 0.5 to 10 percent and the water is a stoichiometric amount for slaking of the lime;
- (b) mixing crystalline silica, additional water and a neutralizing acid to the slaked lime admixture of step a to form an aqueous slurry wherein the neutralizing acid is present in sufficient quantity to provide 2.5-3.5 equivalents to hydrogen ion per mole equivalent of phosphate ion in the phosphate salt, the lime-silica weight ratio is 0.6 to 1.0 and the water-to-solid volume ratio is 88-96%;
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- (c) curing the aqueous slurry at saturated steam pressure and temperature to 360.degree. to 400.degree. F. to form said hard porous mass.
Dependencies are inferred from the claim text.