A bypass baffle for limestone wet flue gas desulfurization

Abstract

A bypass baffle for limestone wet flue gas desulfurization, comprising an air outlet, the inside of the air outlet is fixedly installed with a partition, the right side of the air outlet is movably installed with a rotating shaft, and the right end of the rotating shaft is hinged with a rotating blade. The right side of the leaf is movably installed with a fixed plate, and the outer surface of the fixed plate is provided with an arc groove. The inside of the arc groove is slidably installed with a fixed rod. There are curved plates. Through the combined use of the arc plate and the scraper hook, the dirt formed between the air outlet and the rotor blade can be effectively scraped off, ensuring that during the desulfurization process, there will be no easy fouling between the air outlet and the rotor blade. In this way, it is ensured that the rotor blade and the air outlet can always be tightly closed when they are opened and closed without gaps, which further ensures that the sealing in the boiler is good and will not cause negative pressure in the furnace of the boiler. Ease of use.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization and denitrification, in particular to a bypass baffle for limestone wet flue gas desulfurization. Background technique [0002] Existing desulfurization technologies include limestone-gypsum wet flue gas desulfurization process, magnesium oxide method, ammonia method, single alkali method, etc. Among them, the limestone-gypsum wet flue gas desulfurization process is the most popular at home and abroad because of its simple process and advanced and reliable technology. It is the most widely used and mature desulfurization process, so it is also the most widely used in the application process. [0003] However, in the limestone-gypsum wet flue gas desulfurization process, the bypass baffle is a very important part. If the bypass baffle is not installed, it is difficult to maintain the inlet and outlet of the flue gas desulfurization system during the desulfurization operation of the...

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Problems solved by technology

[0003] However, in the limestone-gypsum wet flue gas desulfurization process, the bypass baffle is a very important part. If the bypass baffle is not installed, it is difficult to maintain the inlet and outlet of the flue gas desulfurization system during the desulfurization operation of the system. The pressure of the flue gas is always kept at zero, so that in actual operation, it is possible to re-inhale part of the net flue gas into the flue gas desulfurization system or directly discharge the original flue gas into the chimney, but most of the existing bypass baffles They are all of louver structure. During the desulfurization process, there are sulfur dioxide, dust and about 10% moisture in the sintering flue gas, which is easy to corrode the bypass baffle, and easy to scale on the gap between the bypass baffle and the air outlet. , it is easy to cause the deformation of the blades of the shutters, thereby reducing the sealing performance, and the phenomenon of blade jamming occurs, resulting in negative pressure on the boiler furnace, causing the trip of the main fuel of the boiler

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