Waste incineration power station boiler emission control debugging method

Abstract

The invention discloses a waste incineration power station boiler emission control debugging method, which comprises the following steps of: igniting to uniformly heat a whole hearth from a cold state to a temperature exceeding 850 DEG C, avoiding a temperature interval in which dioxin is generated due to low-temperature combustion, enabling smoke generated by waste incineration to stay for more than 2 seconds in a high-temperature area, and thoroughly decomposing toxic gas dioxin; the high temperature of the flue gas and the pyrolyzing furnace are utilized to enable the urea solution to be heated to generate ammonia NH3, and the ammonia NH3 reacts with NOx in the flue gas in different reaction areas under the high-temperature condition to generate nitrogen N2 and water H2O; a urea solution is sprayed into a hearth through a spraying system, a reducing agent reacts with NOx at a high temperature under the condition that no catalyst participates in, and preliminary denitration is carried out; the urea solution is reduced by ammonia gas generated by the pyrolyzing furnace and reacts with NOx in the flue gas under the action of the catalyst, nitrogen oxide in the flue gas of the boiler is reduced into nitrogen and water, the emission amount of dioxin and NOx is effectively controlled, and therefore flue gas of a waste incineration power station and a biomass power station is efficiently discharged in a standard reaching mode.

Description

Technical field: [0001] The invention relates to a process technology debugging method, in particular to a waste incineration power station boiler emission control debugging method, which belongs to the technical field of waste treatment. Background technique: [0002] With the continuous development of technologies in various links such as waste recycling, transportation and comprehensive utilization, and the gradual improvement of the localization of waste incineration technology and machinery and equipment, the construction of small and medium-sized waste incinerator incineration power plants in China for the purpose of incineration treatment to reduce volume and pollution. Gradually entering the climax stage; in which the harmless treatment, reduction and recycling of domestic waste are the key points, especially the harmless treatment of air pollutants such as dioxin and NOx produced by the incineration of domestic waste is particularly worthy of attention. [0003] Was...

AI Technical Summary

Problems solved by technology

The adsorbed dioxins have not disappeared, and improper handling will cause secondary pollution

In addition, heating the flue gas containing NOX requires a high-temperature heat source, and the flue gas flow rate is relatively large, the energy consumption is very large, the operating cost of the system is quite high, it is very difficult to popularize and apply, and the utilization rate of denitrification is relatively low, which seriously affects the reduction of NOX emission