LIGNITE MODIFICATION AND DEHYDRATION METHOD, PRODUCTION PROCESS THEREOF, AND APPLICATION OF MODIFIED DEHYDRATED LIGNITE

The present invention discloses a lignite modification and dehydration method, characterized by: comprising a "lignite modification" process. The "lignite modification" process comprises: mixing lignite and a "hydrophobic modification additive" according to a mass ratio greater than 2, stirring and heating same to change the surface layer of the lignite from hydrophilic to hydrophobic, and preparing hydrophobic lignite, the lowest melting point temperature of the substance in the hydrophobic modification additive being less than or equal to the heating temperature of the mixed material, which is less than or equal to the ignition point of lignite powder. The present invention further discloses a lignite modification production process and an application of the modified dehydrated lignite. The present invention solves the technical problems that, for a long time, lignite has not been separable from internal water at a safe and cost-effective low temperature (capable of being less than 100 degrees Celsius), and