Flue gas pollutant removal system suitable for small-scale unit

Abstract

The invention discloses a flue gas pollutant removal system suitable for a small-scale unit. The system comprises a boiler, a desulfurization absorption device, a dust nitrate filtering device, a waste heat recovery device, an induced draft fan and a chimney which are sequentially connected through a pipeline, wherein the desulfurization absorption device comprises a desulfurization reaction device and a desulfurizing agent bin, the desulfurizing agent bin is connected above the desulfurization reaction device through a pipeline, and the desulfurization reaction device is connected with the boiler through a pipeline; and the dust nitrate filtering device comprises a box body and a plurality of ceramic fiber filtering pipes, the box body is connected with the desulfurization reaction devicethrough a pipeline, and the plurality of ceramic fiber filtering pipes are arranged in the box body. According to the flue gas pollutant removal system provided by the invention, three flue gas purification processes of dust removal, desulfurization and denitrification can be completed in one device, and the flue gas pollutant removal system is an integrated flue gas purification process system,occupies a small area, is suitable for the small-scale unit, and can meet stricter ultralow emission requirements.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization and denitrification, and in particular relates to a flue gas pollutant removal system suitable for small-scale units. Background technique [0002] Gas-solid separation is a separation process used in chemical industry, metallurgy, coal combustion and gasification, cement, environmental protection and other industries, especially the removal and recovery of solid particles in high-temperature gas has always been the key to industrial waste gas treatment and environmental protection. major issues. In view of the fact that there are more or less problems in the application process of widely used gas-solid separation technologies such as cyclone dust removal, water film dust removal, fiber filtration, electrostatic dust removal and bag dust collection, and with the advent of the era of nanotechnology , the collection of large-scale production of nano-powders has become a major techn...

AI Technical Summary

Problems solved by technology

[0003] Moreover, traditional desulfurization and denitrification systems often have complex process routes, large floor space, and high energy consumption, and are not suitable for small-scale units

Therefore, it is difficult to meet the requirements of biomass power plants and waste power plants for flue gas treatment systems to ensure reduced land occupation, lower energy consumption, and simple systems while achieving ultra-low emission of flue gas

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