To provide an advanced high pressure flare using a Coanda effect having advantage of a large operating region, request for low purification speed, and stable flame in all states.

This linear Coanda flare apparatus for burning pressurized waste flammable gas is disclosed. The flare apparatus basically comprises an elongated closed end pipe 20 connected to a waste flammable gas supply pipe 22 and having an elongated linear opening therein 24; and an elongated flammable gas distributor trough 26 positioned adjacent to the elongated linear opening in the closed end pipe with the sides of the distributor trough 26 being positioned adjacent to the outer curved surfaces of the closed end pipe thereby forming slots 27 that discharge pressurized waste flammable gas from inside the closed end pipe over the outer curved surfaces of the closed end pipe.