Ihi Corporation

Ryunosuke Itokazu

Masato Tamura

A burner comprises a nozzle main body () which is installed along a central axis of a throat () provided on a furnace wall () and comprises an inner nozzle () in which an auxiliary combustion air () flows and an outer nozzle () which is provided on an outer side and concentrically with the inner nozzle and in which a pulverized coal mixed flow () obtained by mixing a carrying medium with a pulverized coal flow, a wind box () for accommodating the nozzle main body, a secondary air regulator () accommodated in the wind box and provided at a tip portion of the nozzle main body, an auxiliary combustion air intake pipe () for introducing a combustion air as an auxiliary combustion air () into the inner nozzle from the wind box, a pulverized coal flow supply pipe () for introducing a pulverized coal mixed flow into the outer nozzle, and an oxygen-containing gas supply pipe () for supplying an oxygen-containing gas () to the pulverized coal mixed flow and raising the oxygen concentration in the pulverized coal mixed flow.

Burner

The invention provides a biomass mill, comprising a rotatable pulverizing table, a recessed groovewhich is provided in form of ring on an upper surface of the pulverizing table and has an arcuate cross-section, a pressure rollerpressed into the recessed groove, a blowout holefor blowing out the air from around the pulverizing table, and a chutefor supplying a wooden biomass toward a center of the pulverizing table, wherein the wooden biomass is supplied via the chute, the wooden biomass is pulverized between the pulverizing table and the pressure roller, and the pulverized wooden biomass is carried by blowing the air through the blowout hole, wherein a surface from an outer peripheral of the recessed groove to the blowout hole is flat surface.

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Tokyo, Japan

Ryunosuke Itokazu