AMMONIA DECOMPOSITION TREATMENT APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a highly efficient ammonia decomposition treatment apparatus for ammonia-containing waste gas in the treatment facility in a thermal power plant and the like. SOLUTION: In an ammonia decomposition treatment apparatus to treat a waste gas 1 containing ammonia, oxygen, and steam by two-step catalyst layers 2, 3 installed in a front stage and in a rear stage, a concentration sensor 4 to detect the concentration of nitrogen oxide in the treated gas and an injection means to previously divides and injects the part of the waste gas 1 to catalyst layer 3 in the rear stage are installed in the outlet side of the catalyst layer 3 in the rear stage and a control means 7 to divide and inject waste gas 1 as to keep the concentration of nitrogen oxide at a prescribed concentration by the concentration sensor 4 is also installed.