Device and method for controlling fine particulate matter from desulfurized smoke

Abstract

The invention discloses a device and a method for controlling a fine particulate matter from desulfurized smoke. A raw gas enters an absorption layer (2) from a smoke flue (3) of an absorption tower (1) for desulfurizing smoke; sulfur dioxide in the smoke is absorbed and removed by absorption solution; the smoke with the matters such as absorption solution drops, snoot and an adsorbent ascends inside the absorption tower to enter an absorption solution demister (11) through an absorption solution demister rinsing layer (4); most of liquid drops of which the particle sizes are greater than 10 microns are removed; the smoke enters a washing layer and a gas-liquid distributor (9) and contacts washing solution sprayed from a washing layer distributer (8) through a washing layer partition plate (10); the smoke enters a washing demister (7) to remove liquid drops of which the particle sizes are greater than 10 microns after being washed by a washing demister rinsing layer (6); purified smoke is discharged from a smoke purifying channel (5) at the upper part of a smoke desulfurizing absorption tower after twice rinsing and demisting are orderly carried out. The device is matched with a desulfurizing absorption system. Thus, the device is less in investment and convenient to run.

Description

technical field [0001] The invention relates to a treatment device and method for tail gas after exhaust gas desulfurization treatment, in particular to a device and method for controlling fine particles in desulfurization flue gas, belonging to the field of waste gas treatment. Background technique [0002] With the development of my country's industry, the amount of industrial waste gas emissions has gradually increased, and the harm to the ecological environment has become more and more serious. The air quality has seriously affected people's normal life. Therefore, improving the efficiency of corporate waste gas emission treatment and reducing corporate pollutant emissions will have important and far-reaching significance for the country's sustainable industrial development and environmental protection. [0003] SO 2 It is one of the main air pollutants. Removal of SO from flue gas 2 It is mainly a wet flue gas desulfurization process, which is divided into ammonia me...

AI Technical Summary

Problems solved by technology

In order to reduce the emission of fine particles into the atmosphere, the original desulfurization process used 2-3 layers of demisters for treatment, but the effect still cannot meet the current requirements

Domestic research focuses on wet electrostatic precipitator technology, which will increase the investment in desulfurization equipment and increase the energy consumption of desulfurization equipment, thereby greatly increasing the cost of desulfurization, which is unbearable for many enterprises

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