Power station boiler denitration system

Abstract

The invention discloses a power station boiler denitration system, which comprises a denitration reactor, a boiler, an air preheater, an electric precipitator, a desulfurizer and a chimney, wherein anair feeder is connected onto the boiler and the air preheater; the system also comprises an NOX monitor; the NOX monitor is connected with a boiler load monitor and a denitration reactor; the systemalso comprises a mixer; the mixer is connected with a dilution fan; the mixer is connected with the denitration reactor and a liquid ammonia buffer tank; the liquid ammonia buffer tank is connected with a liquid ammonia evaporator tank; the liquid ammonia evaporator tank is connected with a liquid ammonia storage tank. According to the power station boiler denitration system provided by the invention, a more compact layout is adopted, denitration performance of the system is effectively improved while the connection between parts is smoother and more mature, so that the performance of the parts can be fully played, the work efficiency of the system can be integrally improved, and compared with a current system used commonly, the power station boiler denitration system has the size being reduced by nearly 1 / 3, and is more compact and more convenient to transport.

Description

technical field [0001] The invention relates to a power plant boiler denitrification system. Background technique [0002] At present, the denitrification methods of power plants mainly include selective catalytic reduction (SCR) and non-selective catalytic reduction (SNCR), as well as SNCR / SCR combined flue gas denitrification technology developed on the basis of the two. These three flue gas denitrification technologies have their own advantages and disadvantages. Due to the limitation of low-nitrogen combustion technology in the flue gas denitrification, the emission of NOx cannot reach a satisfactory level. In order to further reduce the emission of NOx, the flue gas after combustion must be denitrified. At present, the denitrification system of power plant boilers commonly used in the industry is not compact enough, occupies a large area, and is difficult to transport the equipment. Contents of the invention [0003] The invention mainly solves the technical pro...

AI Technical Summary

Problems solved by technology

Due to the limitation of low-nitrogen combustion technology in the flue gas denitrification, the emission of NOx cannot reach a satisfactory level. In order to further reduce the emission of NOx, the flue gas after combustion must be denitrified.

At present, the denitrification system of power plant boilers commonly used in the industry is not compact enough, occupies a large area, and the equipment is not easy to carry

Images