C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/10
C10L 1/32 (2006.01)
Patent
CA 1203688
CANADIAN PATENT APPLICATION OF MAIT MIHKEL MATHIESEN, LARS INGEMAR GILLBERG, KARL MARTIN EDVIN HELLSTEN AND GUNVOR BIRGIT TORA KARLSSON FOR A PUMPABLE AQUEOUS SLURRY OF A SOLID FUEL AND A PROCESS FOR THE PRODUCTION THEREOF Abstract of the Disclosure A pumpable aqueous slurry of a solid fuel in the form of a pulverized, carbonaceous material and a process for the production of such slurry are described. The aqueous slurry comprises a component which consists of coarse grains of carbonaceous material having a particle size of up to 25 mm, and a further component which consists of a carrier liquid in which the coarse-grained carbonaceous material is suspended. The carrier liquid proper has a solids content of 65-90% by weight and consists of water and pulverized, carbonaceous material having a particle size of at most 0.5 mm, preferably at 1a most 350 µm, and 0.02-2% by weight of at least one additive including a water-soluble surface active com- pound which consists of an alkylene oxide adduct having a hydrophobic part and a hydrophilic part, said hydrophilic part consisting of a polyalkylene oxide chain, preferably a polyethylene oxide chain, having a length of 40-200 alkylene oxide units. the pumpable aqueous slurry is produced by first preparing the carrier liquid and then adding to said liquid 20-40% of the coarse-grained, carbon-aceous material, based upon the total weight of the aqueous slurry. The aqueous slurry is intended primarily for pumping in pipelines. 1b
427617
Gillberg Lars I.
Hellsten Karl M.e.
Karlsson Gunvor B.t.
Mathiesen Mait M.
Ab Carbogel
Berol Kemi Ab
Gastle And Associates
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