Title: Coal-water mixture containing poly (alkylene oxide) surfactant and hydroxyalkyl polygalacomannan
Application Number: 86104739 Application Date: 1986.07.17
Publication Number: 1010613 Publication Date: 1987.04.22
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C10L1/32
Applicant(s) Name: Henkel Corp. Address:
Inventor(s) Name: Dawn M. Lanning;Robert E. Arquette
Attorney & Agent: XU RUXUN DONG JIAYANG
Abstract:
    Coal water mixtures are provided which contain a poly(alkylene oxide) surfactant comprised of a hydrophilic portion derived from ethylene oxide and a hydrophobic portion derived from a higher alkylene oxide as a surfactant and a hydroxyalkyl ether of a polygalactomannan as a stabilizer. Particular examples of these surfactants and stabilizers include ethoxylated, propoxylated propylene glycol and hydroxypropyl guar, respectively. It has been found that coal water mixtures containing from 50 to 80% particulate coal exhibit excellent stability with respect to particle settling and bed compaction when this particular combination of surfactant and stabilizer is employed. Also provided is a process for preparing such coal water mixtures wherein a mixture of particulate coal, water, and the surfactant is formed to which the stabilizer is then added to form a stabilized homogeneous mixture. These coal water mixtures exhibit excellent stability when transported by a pipeline.
Time: 7
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