EXHAUST PIPE AND EXHAUST GAS DENITRATION DEVICE PREVENTING ADHESION OF UREA

摘要

PROBLEM TO BE SOLVED: To provide an exhaust pipe and an exhaust gas denitration device preventing the adhesion of urea in a simpler method while dissolving defects in conventional technology.

SOLUTION: The exhaust gas denitration device has the exhaust pipe for circulating exhaust gas containing nitrogen oxide; a urea solution blow-in means provided at an intermediate part of the exhaust pipe; and a denitration catalyst device provided downstream of the urea solution blow-in means to eliminate the nitrogen oxide in the exhaust gas with urea as a reducing agent. At least a part of the internal wall surface of the exhaust pipe reaching the denitration catalyst device from the urea solution blow-in means is covered with a catalyst component having a function of accelerating hydrolysis of urea.

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