Method for reducing sox emissions during the combustion of sulfur-containing combustible compositions
First Claim
1. An improved method for reducing SOX emissions during combustion of a sulfur-containing combustible material wherein the improvement comprises adding to said combustible material, prior to combustion, 0.5-25% by weight of an admixture of 80.99.5% by weight insoluble sulfur sorbent and 0.5-2.0% by weight soluble sulfur sorbent.
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Abstract
This invention relates to the reduction of oxidized sulfur compound (SOX) emissions produced during combustion of sulfur (S)-containing combustible compounds. More particularly, this invention provides a method for reducing such emissions wherein the combustible compound is mixed with an admixture of a water soluble and a water insoluble sulfur sorbent. Use of such admixtures, remarkably, produces a reduction in the SOX level far greater than would be expected based on the activity of each sorbent alone. Extremely viscous hydrocarbons can be burned as preatomized fuels, which can also be mixed with sorbent admixtures. Clean burning fuels comprising sulfur-containing combustible compounds and sorbent admixtures are also provided.
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Citations
50 Claims
- 1. An improved method for reducing SOX emissions during combustion of a sulfur-containing combustible material wherein the improvement comprises adding to said combustible material, prior to combustion, 0.5-25% by weight of an admixture of 80.99.5% by weight insoluble sulfur sorbent and 0.5-2.0% by weight soluble sulfur sorbent.
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11. An improved method for reducing SOX emissions during combustion of a sulfur-containing hydrocarbon wherein the improvement comprises the precombustion steps of:
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a. emulsifying the hydrocarbon in water to form a preatomized fuel, and b. adding to said preatomized fuel 0.5-25% by weight of an admixture of 80.99.5.% by weight insoluble sulfur sorbent and 0.5-20% soluble sulfur sorbent. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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- 26. A clean-burning fuel which produces low SOX emissions when burned which comprises a sulfur-containing combustible material and 0.5-25% by weight admixture of 80.99.5% by weight insoluble sulfur sorbent and 0.5-20% by weight soluble sulfur sorbent.
- 34. A clean-burning fuel which produces low SOX emissions when burned, comprising a preatomized fuel, formed from a viscous sulfur-containing hydrocarbon and 0.5-25% by weight admixture of 80.99.5% by weight insoluble sulfur sorbent and 0.5-20% by weight soluble sulfur sorbent.
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49. A clean-burning fuel which produces low SOX emissions when burned which comprises
a. about 90 to about 99% of a combustible preatomized fuel formed by emulsifying a vacuum bottom resid with water in a 70/30 ratio using 0.125% heteropolysaccharide biopolymer S-194 produced by Alcaligenes sp. ATCC 31961 and 1/250 parts oil of a surfactant package comprising 47.24% polyoxypropylene-polyoxyethylene block copolymer in prill form having a hydrophilic-lipophilic balance of about 30.5, 21.38% nonylphenol polyethylene glycol ether having an average molecular weight of 1980 amu, 21.38% dinonylphenol ethoxylate having an average molecular weight of 6900 amu and 10% purified free acid pine lignin; - and
b. about 1 to about 10% of an admixture comprising about 90 to about 99% CaCO3 and about 1 to about 10% Na2 CO3.
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50. A clean-burning fuel which produces low SOX emissions when burned which comprises:
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a. about 90 to about 99% of a combustible preatomized fuel formed by emulsifying a vacuum bottom resid with water in a 70/30 ratio using 0.125% heteropolysaccharide biopolymer S-194 produced by Alcaligenes sp. ATCC 31961 and 1/250 parts oil of a surfactant package comprising 47.24% polyoxypropylene-polyoxyethylene block copolymer in prill form having a hydrophilic-lipophilic balance of about 30.5, 21.38% nonylphenol polyethylene glycol ether having an average molecular weight of 1980 amu, 21.38% dinonylphenol ethoxylate having an average molecular weight of 6900 amu and 10% purified free acid pine lignin; and b. about 1 to about 10% of an admixture comprising about 90 to about 99% CaCO3 and about 1 to about 10% calcium acetate.
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Specification