Kiln tail gas dust removal, desulfurization and denitrification system

Abstract

The invention discloses a kiln tail gas dust removal, desulfurization and denitrification system. The system comprises a raw material conveying device, a hot-blast stove, a settling chamber, a cyclonedust removal device, a spray drying tower and a cloth bag dust removal device. The hot-blast stove is provided with a raw material inlet and a tail gas inlet, the hot-blast stove is connected with the raw material conveying device through the raw material inlet, and an air blower is arranged at the tail gas inlet of the hot-blast stove and used for conveying tail gas into the hot-blast stove through the tail gas inlet. The settling chamber is arranged on one side of the hot-blast stove and is connected with the hot-blast stove. The cyclone dust removal device is arranged on one side of the settling chamber and is connected with the settling chamber. The spray drying tower is arranged on one side of the cyclone dust removal device and is connected with the cyclone dust removal device. Thecloth bag dust removal device is arranged on one side of the spray drying tower and is connected with the spray drying tower. Thus, the kiln tail gas is fully subjected to dust removal, desulfurization and denitration, the environmental protection requirement is met, and the improvement of the tail gas treatment efficiency is facilitated.

Description

technical field [0001] The invention relates to the technical field of kiln tail gas treatment, in particular to a kiln tail gas dust removal, desulfurization and denitrification system. Background technique [0002] Since the reform and opening up, various industries have continued to grow and develop, and the ensuing environmental problems have gradually emerged, and my country's air pollution has become increasingly serious. The problem of dust exhaust emissions from industrial kilns has been difficult to solve for a long time, and untreated industrial dust is directly or indirectly discharged into the atmosphere. It will not only endanger our health and destroy the ecological environment, but also seriously affect the appearance of the city and cause great inconvenience to the daily life of citizens. [0003] Some existing tail gas treatment devices still have many shortcomings. The desulfurization and denitrification effect on tail gas is not ideal. Moreover, the raw m...

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Problems solved by technology

The problem of dust exhaust emissions from industrial kilns has been difficult to solve for a long time, and untreated industrial dust is directly or indirectly discharged into the atmosphere

It will not only endanger our health and destroy the ecological environment, but also seriously affect the appearance of the city and cause great inconvenience to the daily life of citizens.

[0003] Some existing tail gas treatment devices still have many shortcomings. The desulfurization and denitrification effect on tail gas is not ideal. Moreover, the raw material used to react with tail gas is single, which makes the final treated gas unsatisfactory. There are many impurities in the tail gas. A large amount of dust is attached, which seriously affects the overall work efficiency; in addition, due to the unreasonable structural design of these devices, the temperature of the exhaust gas after fusion with the gas from the hot blast stove cannot meet the temperature requirements for subsequent desulfurization and denitrification. The temperature of the gas mixed with tail gas does not meet the requirements, resulting in insufficient desulfurization and denitrification of the tail gas, and the discharge into the nature causes great harm

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