Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1987-12-03
1988-11-08
Dixon, Jr., William R.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
44 90, 44622, 110347, C10L 132
Patent
active
047831979
ABSTRACT:
The invention relates to a composition and a method of capturing sulphur emanating from burning carbonaceous fuel particles of an aqueous fuel composition which comprises about 60-80% by weight of carbonaceous fuel particles with an ash content of below about 5% by weight on a dry basis, about 0.05-2.0% by weight of a flow-enhancing chemical which includes a non-ionic dispersant, and a liquid carrier phase consisting essentially of water. The sulphur is captured prior to formation of gaseous sulphur oxides which become diluted on the gaseous phase during and after combustion, and involves the introduction of a sulphur captor which preferably is chosen from hydroxides, oxides or carbonates of calcium or magnesium on or in reaction-facilitating proximity to the burning carbonaceous fuel particles, thereby utilizing local chemical potential in the formation of locally or relatively stable sulphides at relatively low oxygen potentials, the sulphur being captured during the combustion phase as solid sulphide and subsequently, when the temperature drops as the solid combustion residue leaves the flame and the local oxygen potential rises, and sulphate formation occurs, as the sulphate. The amount of sulphur in the combustion off gas is accordingly greatly reduced according to the method of the present invention.
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Mathiesen Mihkel
Nystrom Olle
AB Carbogel
Berol Kemi AB
Dixon Jr. William R.
Hueschen Gordon W.
Medley Margaret B.
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