Flue gas purifying equipment of kiln

Abstract

The invention relates to purifying equipment, in particular to flue gas purifying equipment of a kiln. The flue gas purifying equipment comprises low-temperature denitrifying equipment, desulfurizingequipment and wet type electrostatic demisting and dedusting equipment which are sequentially connected by a flue gas pipeline, wherein the low-temperature denitrifying equipment comprises a reactor body; the reactor body is divided into an ammonia spraying section, a mixing section, a flow equalizing section and a reaction section from bottom to top; an ammonia gas spraying device is arranged atthe ammonia spraying section; a reductant preparation system and a catalyst spraying device are arranged at the mixing section; the wet type electrostatic demisting and dedusting equipment comprises an electric demister body and a high-voltage electrostatic device in the electric demister body; the high-voltage electrostatic device is connected with a plurality of corona wires, and the plurality of corona wires are respectively inserted into hollow deposition electrode pipes and are not in contact with the inner walls of the deposition electrode pipes. The flue gas purifying equipment has theadvantages that the purifying efficiency is high, and the purifying effect is obvious; the 5mg-below superlow emission standard can be reached.

Description

【Technical field】 [0001] The invention relates to purification equipment, in particular to kiln flue gas purification equipment. 【Background technique】 [0002] Nitrogen oxides, collectively referred to as NOx, are one of the main sources of air pollution. The most harmful ones are: NO and NO2. The main hazards of NOx are as follows: (1) toxic to the human body; (2) toxic to plants; (3) can form acid rain and acid fog; (4) form photochemical smog with hydrocarbons; (5) destroy the ozone layer . During the operation of the kiln, a large amount of flue gas will be generated, and it needs to be discharged into the atmosphere. This part of the flue gas contains NOx, SOx, dust and other pollutants, which pollutes the environment. With the environmental protection policies and regulations formulated by the Chinese government, the emission of NOx is strictly limited, and the flue gas containing NOx, SOx and dust is required to be comprehensively treated, including denitrificatio...

AI Technical Summary

Problems solved by technology

The treatment efficiency of the traditional kiln flue gas treatment system is not high, and there are still high levels of harmful substances discharged into the atmosphere when discharged. Therefore, it is necessary to provide an efficient kiln flue gas purification equipment

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