| 摘要 |
PROBLEM TO BE SOLVED: To provide a denitration agent injection device and a denitration unit capable of efficiently diffusing a denitration agent and mixing the denitration agent with exhaust gas with a simple configuration.SOLUTION: A denitration-agent injection device for injecting a denitration agent into an exhaust pipe in which exhaust gas flows, includes: a denitration-agent supply source supplying the denitration agent; a denitration-agent injection pipe including an injection nozzle formed in a part inserted into the exhaust pipe, and injecting the denitration agent supplied from the denitration-agent supply source from the injection nozzle into the exhaust pipe; and a diffusion acceleration mechanism fixed to the denitration-agent injection pipe and accelerating diffusion of the denitration agent. In a view from an extension direction of the denitration-agent injection pipe, the diffusion acceleration mechanism is a plate member that is arranged at least in an entire region upstream, in a flow direction of exhaust gas, of an outer circumference of the denitration-agent injection pipe, and that is inclined with respect to a direction orthogonal to the extension direction. |
