A bubbling desulfurization and dust removal system

Abstract

The invention aims to provide a bubbling type desulfuration dust removal machine system. The bubbling type desulfuration dust removal machine system comprises a machine body, a slurry pond located at the bottom of the machine body, a smoke inlet channel located at one side of the machine body and used for guiding waste gas into the machine body, a smoke inlet nozzle connected to the smoke inlet channel and soaked under the liquid level of the slurry pond, a spraying layer located at the upper part of the machine body, and a smoke outlet located at the top of the machine body. The bubbling type desulfuration dust removal machine system is characterized in that a bubbling type desulfuration bubble refining plate with dense through holes between the upper surface and the lower surface of the plate is arranged under the smoke inlet nozzle; an overflow control device used for adjusting and monitoring the liquid level of the slurry pond is arranged on the outer side of the machine body. After using the bubbling type desulfuration dust removal machine system, high-pressure smoke is in more full contact with alkaline liquid in the slurry pond when entering the desulfuration and denitration slurry pond via the smoke inlet nozzle; the contact time is longer; the high-pressure smoke is fully wetted and absorbed by the alkaline liquid; the liquid level in the slurry pond can also be monitored in real time; the highest liquid level of the slurry pond can be adjusted.

Description

technical field [0001] The invention relates to the field of flue gas wet desulfurization, denitrification and dust removal equipment, in particular to a bubbling desulfurization and dust removal system. Background technique [0002] In recent years, my country's atmospheric environmental pollution has become increasingly serious, and acid rain and haze have threatened people's life, production and even survival. Sulfur dioxide and soot emitted by coal-fired boilers are one of the most important sources of acid rain and haze. For this reason, my country's coal-fired boiler flue gas emission standards have strictly limited the content of SO2, NOx and soot. Desulfurization, denitrification and dust removal have become an essential process before discharge. [0003] In the prior art, wet flue gas desulfurization and dedusting is the most mature process. Desulfurization and dedusting can be carried out separately by setting up independent processing devices, and the integration ...

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Problems solved by technology

[0005] 1. When the high-pressure flue gas in the existing equipment is discharged into the desulfurization slurry tank through the flue, some large bubbles will be generated, so that the solid soot particles and gas pollutants are wrapped in the large bubbles. After rising to the liquid surface of the slurry pool and breaking, it returns to the fuselage again, and is wetted and absorbed without sufficient contact with the alkaline liquid in the slurry pool;

[0006] 2. The contact time between the high-pressure flue gas and the alkaline liquid in the slurry tank is short, and it is not fully absorbed, so that a large amount of solid soot particles and SO2 and NOx pollution gases remain in the rising flue gas after passing through the slurry tank for desulfurization and denitrification. Dust removal efficiency is not high

[0007] 3. The existing water level controller can only monitor the highest liquid level and the lowest liquid level, that is, it cannot adjust the highest liquid level of the slurry tank according to the need of dust removal; nor can it monitor the real-time liquid level in the slurry tank, so as to replenish water in time when the liquid level is too low , it will not wait for the liquid level to drop to the lowest level before replenishing water, which will affect the dust removal effect; it will not automatically overflow when the liquid level in the slurry tank is too high, and the discharge port must be manually opened to discharge water, requiring manual supervision, which will affect the efficiency of desulfurization and dust removal

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