Dangerous waste incineration denitration method

The invention discloses a hazardous waste incineration denitration method which comprises the steps that in the operation process of a hazardous waste incineration system, a certain proportion of denitration agent is sprayed into a rotary kiln to be incinerated; the feeding amount of the denitration agent and the temperature of the rotary kiln are controlled; the content of nitrogen oxides in the flue gas is reduced by utilizing the reaction between the flue gas after waste incineration, so that the flue gas is discharged up to the standard; the denitration agent is one of a monomethylamine aqueous solution, a dimethylamine aqueous solution, a trimethylamine aqueous solution, a methylamine ethanol solution and a methylamine methanol solution; the concentration of the denitration agent is 20-40%; the feeding position of the denitration agent is the kiln head of the rotary kiln; the feeding flow of the denitration agent is 200 to 400 L/h; the temperature of the rotary kiln is 950-1100 DEG C; according to the me