A centralized heating flue gas desulfurization and denitrification treatment system and method

Abstract

The invention discloses a centralized heating flue gas desulfurization and denitrification treatment system and method. The centralized heating flue gas desulfurization and denitrification treatment system includes an activated carbon adsorption tower, an activated carbon analysis tower, a hot blast stove and an SCR reactor; There is a deflector inside, and the cavity formed between the deflector and the side wall of the flue gas pipe forms an air mixing chamber. The air mixing chamber introduces the hot air generated by the fuel combustion of the hot blast stove and mixes evenly with part of the desulfurized flue gas to form Heat medium, this part of the heat medium is used to realize the thermal regeneration of activated carbon in the heating section of the activated carbon desorption tower and to heat the denitrification flue gas required by the SCR system. The system and method of the invention have low input cost, simple structure, strong adaptability and practicability, high control precision, and obvious flue gas desulfurization and denitrification effects.

Description

A centralized heating flue gas desulfurization and denitrification treatment system and method technical field The present invention relates to flue gas desulfurization and denitrification technology, be specifically related to a kind of central heating flue gas desulfurization and denitrification treatment system The invention and the method belong to the technical field of flue gas purification. Background technique For industrial flue gas, especially the sintering machine flue gas of iron and steel industry, flue gas desulfurization and denitration technology is used in many A flue gas purification technology in the chemical industry of nitrogen oxides and sulfur oxides. Nitrogen oxides, sulfur oxides are air pollution one of the main sources. Simultaneous flue gas desulfurization and denitrification technology is currently mostly in the research and industrial demonstration stage, but due to its one Desulfurization and denitrification can be achieved simultaneo...

AI Technical Summary

Problems solved by technology

The hot blast stove itself produces a certain amount of flue gas. Since the hot blast stove is burning, the flue gas produced contains pollutants such as nitrogen dioxide and nitrogen monoxide; in the prior art, the gas generated by the hot blast stove is directly discharged, polluting the air

At the same time, the hot blast stove uses air at normal temperature as the combustion-supporting gas, and heating this part of the combustion-supporting gas to the temperature required by the heat exchange medium (generally 400-460°C) requires a large amount of fuel; that is to say, part of the fuel in the hot blast stove needs to be used It is used to heat the combustion-supporting gas, resulting in the need to consume more fuel and produce a larger amount of pollutant-containing flue gas

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