Power generation system

A power generation system comprising:

• (A) a fixed carbon production device for producing fixed carbon and hydrocarbon gas by dry-distilling and cooling low rank coal;
• (B) a power generator for combusting the hydrocarbon gas as a main fuel, thereby generating main steam and moving a steam turbine by the main steam and a condenser;
• and
• (C) a heat supply unit using exhaust heat from the condenser for heating of inert gas in drying;
• wherein
• (D) the fixed carbon production device conducts the dry-distilling and the cooling;
• and wherein the fixed carbon production device is provided with:
• a dry distillation furnace for dry-distilling, said dry' distillation furnace being erected in a cooling bath for cooling dry-distilled fixed carbon;
• a dry distillation unit which is partitioned into a rectangular or a polygonal shape in a vertical direction on a horizontal cross-section in the dry distillation furnace by a separating wall from an upper portion to a lower portion;
• a plurality of dry distillation mini-furnaces which are each partitioned into a rectangular or a polygonal shape in the vertical direction on the horizontal cross-section in the dry distillation unit by a partition plate from an upper portion to a lower portion:
• a pipe heating means for heating which is arranged on the separating wall of the dry distillation unit and the partition of each of the dry distillation mini-furnace;
• and
• a collection path for collecting fixed carbon produced in the cooling bath by feeding raw material coal from the upper portion and performing dry distillation in each of the dry distillation mini-furnaces by the pipe beating means.