| 摘要 |
This solid fuel burner (1) is provided with: a nozzle (9) that is provided around the center axis of the burner, that includes a straight tube section (2) having an opening opposed to a furnace (13), and a curved tube section (5) continuous with the straight tube section (2), and that sprays out, from the opening to the furnace (13), a fluid mixture which is of a solid fuel and carrier gas of the solid fuel and which is flowing in the curved tube section (5); a first swirler (6) that gives the fluid mixture a swirl at the burner center axis side of the straight tube section (2); and a second swirler (7) that gives, at the burner center axis side downstream of the first swirler (6), the fluid mixture a swirl opposite to that given by the first swirler (6). The fluid mixture flowing from the curved tube section (5) is moved radially from the center axis by the first swirler (6), and is given a counter-swirl by the second swirler (7) to reduce swirl intensity. |
