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Device and method for controlling fine particulate matter from desulfurized smoke

A technology of fine particles and control devices, which is applied in the field of exhaust gas desulfurization exhaust gas treatment devices and desulfurization flue gas fine particle control devices. It can solve the problems of increasing energy consumption of desulfurization devices, increasing desulfurization costs, and unsatisfactory effects. The effect is good, the operation is convenient, and the impact effect is improved

Active Publication Date: 2013-09-18
JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROTECTION
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  • Abstract
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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

Method used

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  • Device and method for controlling fine particulate matter from desulfurized smoke

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Embodiment Construction

[0022] see figure 1 Flow chart:

[0023] After the original flue gas passes through the absorption layer 2 of the absorption tower in the desulfurization absorption tower 1 from the flue 3 of the original flue gas, the sulfur dioxide in the flue gas is removed by the absorption liquid, and the flue gas carries substances such as absorption liquid droplets, smoke dust, and absorbent. The flue gas rises in the absorption tower and enters the absorbing liquid demister 11, and most of the liquid droplets with a particle size larger than 10 μm are removed. The water washing liquid sprayed down by the device 8 is contacted, where the particle size of the absorption liquid droplets, smoke and absorbent and other fine particles are increased and washed and captured, and the flue gas enters the water washing demister 7 to remove the particle size after being washed with water. For droplets larger than 10 μm, the clean flue gas is discharged from the clean flue 5.

[0024] In order to...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00
Inventor 徐长香顾成涛高瑞华傅国光许祥俊
Owner JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROTECTION
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