A system for gasification of a carbonaceous material and recycling char or solids from a gasifier is disclosed. The recycling system may include a standpipe that receives a solids stream from a separator, the standpipe generating a pressure differential across a bed of accumulated char, thereby producing a bottoms stream having a greater pressure than the inlet solids stream. The recycling system may also include a holding vessel that receives the bottoms stream and a fluidized-bed distribution vessel that receives char from the holding vessel and is configured to provide a continuous and precise flow of recycled char to the gasification reactor.

A burner device includes a burner body which includes a protruding portion protruding from a furnace wall into an interior of a combustion furnace, a cooling pipe through which a refrigerant for cooling the burner body flows, the cooling pipe being disposed so as to surround an outer peripheral surface of the protruding portion, and a light detection unit for detecting internal light of the cooling pipe.

A burner device includes a burner body which includes a protruding portion protruding from a furnace wall into an interior of a combustion furnace, a cooling pipe through which a refrigerant for cooling the burner body flows, the cooling pipe being disposed so as to surround an outer peripheral surface of the protruding portion, and a light detection unit for detecting internal light of the cooling pipe.

A multi-stage product gas generation system converts a carbonaceous material, such as municipal solid waste, into a product gas which may subsequently be converted into a liquid fuel or other material. One or more reactors containing bed material may be used to conduct reactions to effect the conversions. Unreacted inert feedstock contaminants present in the carbonaceous material may be separated from bed material using a portion of the product gas. A heat transfer medium collecting heat from a reaction in one stage may be applied as a reactant input in another, earlier stage.

The present invention relates to a gasification apparatus and a gasification method, the apparatus comprising: a reactor for gasifying fuel; a fuel supply part for supplying fuel to the reactor; and a dispersion plate for spraying fuel, so as to enhance reactivity in the reactor, and aerosolizing moisture within fuel, thereby uniformly supplying fuel to the reactor, wherein the dispersion plate, in a state of being charged by receiving power, is configured to electrostatically spray fuel and a gasification agent, thereby producing a micro droplet, and atomizing the same. Accordingly, it is possible to aerosolize fuel using a boiling phenomenon or an electrostatic spray phenomenon, and uniformly supply fuel to the reactor. Also, it is possible to obtain the effect of increasing gasification reaction efficiency by preheating and reforming fuel and moisture through mid-low temperature oxidation prior to supplying the same the reactor.

A system includes a feed injector that may supply a feedstock to a gasifier. The feed injector includes one or more conduits extending toward a tip portion having an outlet, cooling coil coupled to the tip portion, and a protective shell including a first protective shell portion coupled to a second protective shell portion. The protective shell surrounds the tip portion and at least portions of the one or more conduits and the cooling coil. The feed injector also includes one or more mounting structures disposed along an outer perimeter of the feed injector. The one or more mounting structures may facilitate coupling of the first protective shell portion, the second protective shell portion, and the feed injector.

A system includes a feed injector that may supply a feedstock to a gasifier. The feed injector includes one or more conduits extending toward a tip portion having an outlet, cooling coil coupled to the tip portion, and a protective shell including a first protective shell portion coupled to a second protective shell portion. The protective shell surrounds the tip portion and at least portions of the one or more conduits and the cooling coil. The feed injector also includes one or more mounting structures disposed along an outer perimeter of the feed injector. The one or more mounting structures may facilitate coupling of the first protective shell portion, the second protective shell portion, and the feed injector.

A system is disclosed provided with: a slag bath that retains slag cooling water and receives slag; a slag cooling water feed line and a slag pump outlet via which the slag and the slag cooling water are pumped and fed to a slag separation device; a circulation pump that forms a water flow for pumping out the slag; a slag cooling water circulation line linking from the slag separation device to the slag bath; a reverse flow line that causes the slag cooling water dispensed from the circulation pump to flow in reverse in the slag cooling water feed line; a selective supply unit capable of selectively supplying the slag cooling water dispensed from the circulation pump to the slag cooling water circulation line and the reverse flow line; and a water supply line, one end of which is connected to the slag cooling water feed line.

A system is disclosed provided with: a slag bath that retains slag cooling water and receives slag; a slag cooling water feed line and a slag pump outlet via which the slag and the slag cooling water are pumped and fed to a slag separation device; a circulation pump that forms a water flow for pumping out the slag; a slag cooling water circulation line linking from the slag separation device to the slag bath; a reverse flow line that causes the slag cooling water dispensed from the circulation pump to flow in reverse in the slag cooling water feed line; a selective supply unit capable of selectively supplying the slag cooling water dispensed from the circulation pump to the slag cooling water circulation line and the reverse flow line; and a water supply line, one end of which is connected to the slag cooling water feed line.

A multi-stage product gas generation system converts a carbonaceous material, such as municipal solid waste, into a product gas which may subsequently be converted into a liquid fuel or other material. One or more reactors containing bed material may be used to conduct reactions to effect the conversions. Unreacted inert feedstock contaminants present in the carbonaceous material may be separated from bed material using a portion of the product gas. A heat transfer medium collecting heat from a reaction in one stage may be applied as a reactant input in another, earlier stage.