초록

An on-line and/or batch process to obtain a liquid mixture consisting of coal/asphaltenes-fuel oil/heavy crude oil-surfactant-water, through dispersion of a coal-water mixture, using a mechanical element defined as a static mixer or a tank with shaking.

대표청구항 ▼

[ We claim:] [1.] A process for the formation of a fluid fuel mixture of powdered coal or powdered asphaltenes, fuel oil, an anionic ethoxylated surfactant, a polymeric stabilizer and water, having easy handling properties, excellent stability, low viscosity, comprising the following steps:(a) formi

[ We claim:] [1.] A process for the formation of a fluid fuel mixture of powdered coal or powdered asphaltenes, fuel oil, an anionic ethoxylated surfactant, a polymeric stabilizer and water, having easy handling properties, excellent stability, low viscosity, comprising the following steps:(a) forming an aqueous slurry of wet or dry powdered coal or powdered asphaltenes and water, where said powdered coal or said powdered asphaltenes have an average particle size of from 40 to 45 microns, with a solids/water ratio of 70/30, and a concentration of anionic ethoxylated surfactant from 5,000 to 10,000 ppm, producing a mixture with viscosity values ranging from 3,000 to 5,000 cP,(b) forming on-line a fuel oil or crude oil and water inverse emulsion O/W (70/30), with the oil droplets having an average particle size from 4 to 7 microns and final viscosity values from 80 to 140 cP, by adding either atomized or diffused fuel oil in a water-anionic ethoxylated surfactant continuous phase, using a static mixer, said anionic surfactant is in a concentration range of from 1,000 to 3,000 ppm and is the same as in step (a), and a polymeric stabilizer in a concentration of 100 to 300 ppm,preparing a final product by adding and mixing the slurry in step (a) to the inverse emulsion of step (b), either in a tank at low revolutions of from 100 to 300 rpm, using mixers providing both axial and radial flow, or mixing on-line under flow control, by using either a progressive-cavities pump or open-impeller centrifugal pump, and static mixers.