A gasifier wall is formed of a plurality of pipes through which a cooling medium flows. The plurality of pipes are made of a first material and arranged side by side. At least a part of the gasifier wall includes an outer peripheral portion stacked on a periphery of each of the pipes and made of a second material having higher corrosion resistance than the pipes; a board disposed between the outer peripheral portion and an adjacent outer peripheral portion; and a welded portion coupling the outer peripheral portion and the board. The outer peripheral portion and the board constitute a wall surface that separates an internal space and an external space from each other. The outer peripheral portion covers an entire region of the pipe in a circumferential direction.

A pyrolysis apparatus having a heating system adapted to heat a first gas enclosure, wherein a gas path within the heated enclosure is helical or spherical. Pyrolysis is used to destroy oils, tars and/or PAHs in a gaseous mixture.

A pyrolysis apparatus having a heating system adapted to heat a first gas enclosure, wherein a gas path within the heated enclosure is helical or spherical. Pyrolysis is used to destroy oils, tars and/or PAHs in a gaseous mixture.

A coating is formed on a surface of a base material 11 of a furnace, and includes a base layer 12 and a sliding material layer 13 that is formed on a surface of the base layer 12 and contains an oxide ceramic and a compound having a layered crystal structure. The sliding material layer 13 causes the collided ashes to be slipped and facilitates the drop off of the adhered ashes. The base material 11 forms a heat transfer tube or a wall surface of the furnace. The coating is also applied to a coal gasification furnace, a pulverized coal fired boiler, a combustion apparatus, or a reaction apparatus containing a furnace.

A pyrolysis apparatus having a heating system adapted to heat a first gas enclosure, wherein a gas path within the heated enclosure is helical or spherical. Pyrolysis is used to destroy oils, tars and/or PAHs in a gaseous mixture.

A pyrolysis apparatus having a heating system adapted to heat a first gas enclosure, wherein a gas path within the heated enclosure is helical or spherical. Pyrolysis is used to destroy oils, tars and/or PAHs in a gaseous mixture.

A gasification system for the oxidation of a carbonaceous feedstock to provide a synthesis gas comprising: a reactor chamber for oxidizing the carbonaceous feedstock; a quench section for holding a bath of liquid coolant; an intermediate section having a reactor outlet opening through which the synthesis gas is conducted from the reactor chamber into the bath of the quench section; at least one layer of refractory bricks arranged on the reactor chamber floor, the lower end section of the refractory bricks enclosing the reactor outlet opening and defining the inner diameter thereof; the intermediate section including a number of halved tubes for liquid coolant arranged onto at least part of the reactor chamber floor on a side thereof opposite to the lower end section of the refractory bricks; and a pump system for circulating the liquid coolant through the halved tubes on the reactor chamber floor.

A gasification system for the oxidation of a carbonaceous feedstock to provide a synthesis gas comprising: a reactor chamber for oxidizing the carbonaceous feedstock; a quench section for holding a bath of liquid coolant; an intermediate section having a reactor outlet opening through which the synthesis gas is conducted from the reactor chamber into the bath of the quench section; at least one layer of refractory bricks arranged on the reactor chamber floor, the lower end section of the refractory bricks enclosing the reactor outlet opening and defining the inner diameter thereof; the intermediate section including a number of halved tubes for liquid coolant arranged onto at least part of the reactor chamber floor on a side thereof opposite to the lower end section of the refractory bricks; and a pump system for circulating the liquid coolant through the halved tubes on the reactor chamber floor.

A gasification reactor comprises a pressure shell; a reaction zone partly bounded by a tubular membrane wall enclosed by the pressure shell; at least one burner having a burner head, said burner head protruding the membrane wall; at least one cooling device arranged in the membrane wall and enclosing the burner head of at least one burner, the at least one cooling device comprising several concentric rings of increasing diameter, forming a truncated cone shape having a largest diameter opening facing the reaction zone and a smallest diameter opening facing the burner head, each ring being a conduit having an inlet and an outlet for a cooling medium, the smallest diameter opening for the burner head being located between the pressure shell and the membrane wall; the cooling device comprising at least one part-circular outer ring having an interruption.

A gasification reactor comprises a pressure shell; a reaction zone partly bounded by a tubular membrane wall enclosed by the pressure shell; at least one burner having a burner head, said burner head protruding the membrane wall; at least one cooling device arranged in the membrane wall and enclosing the burner head of at least one burner, the at least one cooling device comprising several concentric rings of increasing diameter, forming a truncated cone shape having a largest diameter opening facing the reaction zone and a smallest diameter opening facing the burner head, each ring being a conduit having an inlet and an outlet for a cooling medium, the smallest diameter opening for the burner head being located between the pressure shell and the membrane wall; the cooling device comprising at least one part-circular outer ring having an interruption.