Patents Assigned to Fluidcarbon International AB
  • Coal-water dispersion
    Patent number: 4634450
    Abstract: A coal-water dispersion comprising coal particles dispersed in water and a dispersing agent comprising polymerized fatty acids, polymerized rosin acids and/or polymerized fatty or rosin acid derivatives which have been partially esterified with a polyalkylene glycol or monoester or monoether thereof, having a residual acid value higher than 3.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: January 6, 1987
    Assignees: Bergvik Kemi AB, Fluidcarbon International AB
    Inventor: Helena Ljusberg-Wahren
  • Coal-water dispersion
    Patent number: 4599089
    Abstract: A storage stable aqueous pulverized-coal dispersion can be pumped and can be burned by conventional techniques. The dispersion comprises stabilizing additives and a coal content which ranges from 60 to 80% by weight. The additives include a combination of (a) sufficient lecithin adsorbed on surfaces of coal particles to provide repulsion between the coal particles by hydration forces and (b) polymer cooperating with the lecithin and comprising at least one polymer having segments of hydrophobic as well as segments of hydrophilic character.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: July 8, 1986
    Assignee: Fluidcarbon International AB
    Inventors: Lars L. Stigsson, Bjorn Lindman
  • Method for atomizing dispersions or solutions containing particles
    Patent number: 4580723
    Abstract: A method for atomizing dispersions or solutions containing particles wherein the dispersion or solution is discharged from a nozzle. Before it leaves the nozzle it is brought to form a rotating annular film which is exposed to the influence of high-frequency sound for the disintegration of the liquid.
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: April 8, 1986
    Assignee: Fluidcarbon International AB
    Inventor: Lars L. Stigsson