Improved spray gun for desulfurization and denitrification

Abstract

The invention discloses an improved-type desulfurization and denitrification spray gun. The improved-type desulfurization and denitrification spray gun comprises a spray gun inner pipe and a spry gun sleeve, wherein a joint is welded at one end of the spray gun inner pipe, and the other end of the spray gun inner pipe is welded with a spray gun head; the outer wall of the spray gun inner pipe forms a threaded region, and one side of the threaded region is provided with a stop ring; the spray gun sleeve is in threaded connection with the threaded region; the spray gun sleeve is provided with an inlet pipe; the inlet pipe is provided with a cooling pipe; an end socket is arranged between one end of the spray gun sleeve and the stop ring, and the other end of the spray gun sleeve is provided with a trumpet-shaped flaring; the inner wall of the spray gun sleeve is provided with 2-3 spirally arranged flow guide elements at intervals. According to the invention, the desulfurization and denitrification operation efficiency is improved, and meanwhile the service life is prolonged.

Description

technical field [0001] The invention relates to a spray gun used in desulfurization and denitrification operations. Background technique [0002] The desulfurization and denitrification tower is mainly composed of a flue gas conveying system, an absorption tower, a spray system, a slurry circulation system, and a slurry recovery system. [0003] The industrial waste gas transports a large amount of sulfur dioxide, carbon dioxide, etc. waste gas to the absorption tower through the flue gas conveying system. A large amount of desulfurization agent in the absorption tower is transported to the tower body by the spray system. The desulfurizer and industrial waste gas with a certain pressure and detachment ability Full contact produces a chemical reaction. In order to make the sulfur dioxide in the waste gas form a precipitate and flow to the bottom of the tower, it is discharged from the slurry circulation system to the outside of the tower for recycling. After desulfurization a...

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Problems solved by technology

[0004] At present, in the process of desulfurization and denitrification, flue gas conditioning and other processes, spray guns are generally used in the spray system to spray the fluid into a certain range to achieve the ideal mixing effect and improve the efficiency and efficiency of desulfurization and denitrification. quality; but there are deficiencies in the existing spray gun structure, which cannot solve the problem of short service life. Because the spray gun is in a high-temperature working environment for a long time, the surface temperature of the spray gun is high and it is easy to corrode. In addition, the radiation area of ​​the spray gun is small, and a large amount of desulfurization is required In this way, the cost will be greatly increased, which is not conducive to the long-term development of the enterprise. Therefore, the above-mentioned problems have been technical problems for many years and need to be solved urgently.

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