Fuel and related compositions – Solid carbonaceous fuel dispersed in a liquid medium
Patent
1989-01-03
1991-01-08
Dees, Carl F.
Fuel and related compositions
Solid carbonaceous fuel dispersed in a liquid medium
44622, 201 17, C10L 910, C10L 132
Patent
active
049831879
ABSTRACT:
A method is described for preparing a high-concentration solids suspension, in particular coal or petroleum coke, which can be transported by pipe and be burnt with low emission of harmful substances, comprising crushing the solid to be suspended to a maximum particle size of 6 mm and then grinding it in the presence of additives in aqueous solution to a maximum solid particle size of 300 .mu.m, the method being characterized by adding, either before the crushing or immediately before the grinding, a desulphurizer chosen from CaCo.sub.3, MgCO.sub.3 and dolomite, either alone or in mixture, in a molar ratio to the sulphur contained in the solid of between 1.5 and 3, and adding immediately before or during grinding a desulphurizer also possessing stabilizing and anticorrosive properties and chosen from MgO, Mg(OH).sub.2, CaO and Ca(OH).sub.2, either alone or in mixture, in a quantity of between 0.04 and 0.4% by weight of the final suspension.
REFERENCES:
patent: 4217109 (1980-08-01), Siusersson et al.
patent: 4549881 (1985-10-01), Mathiesen et al.
patent: 4552568 (1985-11-01), Igarashi et al.
patent: 4783197 (1988-11-01), Mathiesen et al.
Donati Elio
Ercolani Dario
Lagana Vincenzo
Dees Carl F.
Snamprogetti S.p.A.
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