Method for upgrading and desulfurizing high-sulfur fat coal

The invention provides a method for upgrading and desulfurizing high-sulfur fat coal, which relates to the technical field of coking and comprises the following steps: (a) mixing high-sulfur fat coal, an organic sulfur removal agent, titanium dioxide and nickel fluoborate to form first slurry; (b) carrying out heating reaction on the first slurry, and separating to obtain a first liquid material and a first solid material; (c) mixing the first solid material and washing oil to form second slurry; (d) carrying out heating and pressurizing reaction on the second slurry, and separating to obtain a second liquid material and a second solid material; (e) carrying out flash evaporation on the second liquid material to obtain an organic solvent and a third solid material; and drying the third solid material to obtain desulfurized coal. According to the method, 50% of organic sulfur and 100% of inorganic sulfur can be removed on the premise that the caking property of the high-sulfur fat coal is not damaged, the util