Slag discharge device, gasifier furnace and integrated gasification combined cycle, and slag discharge method

A slag discharge method using a slag discharge device that discharges, from a gasifier furnace adapted to gasify carbonaceous feedback, slag generated at a combustor portion of the gasifier furnace and dropping from the combustor portion,

• the slag discharge device including
• a capturing portion that is a porous member provided vertically below the combustor portion so as to intersect a dropping direction of the slag and including a plurality of through-holes formed therein, that allows the slag smaller than the through-holes to pass therethrough, and that captures the slag larger than the through-holes;
• and
• a crusher for crushing the slag captured by the capturing portion,
• in which the crusher has a plurality of crushing portions that break, with a pressure, and thus crush the slag that is present on a main capturing surface that is an upper surface of the capturing portion in a vertical direction, a drive portion that reciprocates the crushing portions in a predetermined direction along the main capturing surface, regulation portions that regulate a direction of moving of the crushing portions caused by the drive portion, and a plurality of crushing spaces that are sectioned by the main capturing surface, the crushing portions, and the regulation portions, and in which the slag is crushed,
• the regulation portions have partitioning walls that isolate the plurality of crushing spaces from each other, and
• in the regulation portions, a communication portion that causes the plurality of crushing spaces of the crusher to communicate with each other and that penetrates through the partitioning walls is formed,
• the slag discharge method comprising:
• allowing a part of the slag to be crushed is passed through the communication portion and crushing the slag using the crusher.