Boiler dust removal and ash conveying system

Abstract

The invention discloses a boiler dust removing and conveying system which comprises a wet type electric dust remover, a circulation water tank and an alkali liquor tank. Spraying mechanisms are arranged on the top of the wet type electric dust remover and sequentially fall into a front portion and a rear portion in the flue gas circulation direction. The boiler dust removing and conveying system is characterized by further comprising a drainage tank and a washing water tank. A sewage outlet of the wet type electric dust remover is connected with the drainage tank through a sewage drainage pipeline. The drainage tank is connected with the circulation water tank, and water flows into the circulation water tank in an overflow mode. The bottom of the drainage tank is connected to a trench through a pipeline. The alkali liquor tank is connected with the circulation water tank through an alkali liquor metering pump. The circulation water tank is connected with the spraying mechanisms on the front portion through a circulation water pump, and the washing water tank is connected with the spraying mechanisms on the rear portion through a washing water pump. A PH sensor is arranged in the drainage tank. The alkali liquor metering pump is controlled by the PH sensor. By arranging a feedback system, the effect of improving corrosion resistance of the wet type electric dust remover is achieved.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization and dust removal, in particular to a boiler dust removal and ash conveying system. Background technique [0002] As early as 1907, the world's first wet electrostatic precipitator was applied to remove sulfuric acid mist. With the continuous development of technology, wet electrostatic precipitator has been extended to many application fields. Especially in the metallurgical and chemical industry, a large number of applications make the wet electrostatic precipitator technology mature. In the application of coal-fired power plants, it has been shown that the wet electrostatic precipitator can remove more than 90% of PM2.5 fine dust and SO3 smoke, and can achieve almost zero turbidity emissions. In addition, it can also remove mercury, NH3, SO2 and HCl, etc. . Therefore, the wet electrostatic precipitator is the first choice as the terminal treatment equipment for air pollution c...

AI Technical Summary

Problems solved by technology

In addition, by adding lye, the liquid sprayed in the wet electrostatic precipitator can neutralize the acid corrosion fume, which has the effect of reducing the corrosion of internal parts, but because the system in the above patent cannot achieve the anti-corrosion effect Timely feedback leads to inaccurate calculation of the amount of lye added and the timing of lye addition, which greatly affects the anti-corrosion effect

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