White smoke elimination system and method

A flue gas and white smoke technology, which is applied in the fields of chemical industry and environmental protection, can solve the problems such as the inability to reduce the amount of water vapor, the inability to provide circulating cooling water, and the increase in system investment, etc., to achieve good elimination effect, low operating costs, and low investment costs Effect

Pending Publication Date: 2018-08-24
BEIJING CPCEP ENERGY CONSERVATION & ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some factories cannot provide circulating cooling water. Setting up a separate circulating water cooling device will not only increase the system investment, but also

Method used

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  • White smoke elimination system and method

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Effect test

Embodiment 1

[0053] use as figure 1 In the flue gas white smoke elimination system shown, in the first flue gas condenser 3, the air exchanges heat with the flue gas, wherein the flue gas decreases from the inlet temperature of 140°C to 111°C, and the air rises from the inlet air temperature of 30°C As high as 92°C at the outlet, 4925kW of waste heat can be recovered, the moisture content of flue gas can be reduced from 14.06% to 12.58%, and the evaporation water of desulfurization tower 4 can be reduced by about 6.4t / h. After the flue gas is treated by the desulfurization tower 4, the flue gas is reduced from 53°C to 50.75°C, and the flue gas volume is reduced from 471091Nm 3 / h reduced to 463139Nm 3 / h.

[0054] In the second flue gas condenser 6, cold air is used as the cold source to cool the flue gas at the outlet of the desulfurization tower 4 from 50.75°C to 49.25°C, the temperature drops by 1.5°C, the amount of flue gas condensed water is 3.86t / h, and the flue gas condenses and d...

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Abstract

The invention relates to the technical fields of chemical engineering and environmental protection, in particular to a white smoke elimination system and a method. Specifically, the white smoke elimination system comprises a first smoke condenser, a desulfurizing tower, a second smoke condenser, a fan, a demister, a smoke-air mixing flue and a chimney, wherein a smoke outlet of the first smoke condenser is connected with an inlet of the desulfurizing tower, an outlet of the desulfurizing tower is connected with a smoke inlet of the second smoke condenser, a smoke outlet of the second smoke condenser is connected with an inlet of the demister, an outlet of the demister is connected with a smoke inlet of the smoke-air mixing flue, and an outlet of the smoke-air mixing flue is connected withthe chimney; an outlet of the fan is connected with an air inlet of the second smoke condenser, an air outlet of the second smoke condenser is connected with an air inlet of the first smoke condenser,an air outlet of the first smoke condenser is connected with an air inlet of the smoke-air mixing flue, and an outlet of the smoke-air mixing flue is connected with the chimney.

Description

technical field [0001] The invention relates to the technical fields of chemical industry and environmental protection, in particular to a system and method for eliminating white smoke from flue gas. Background technique [0002] Wet flue gas desulfurization is currently the most widely used desulfurization process in the market, with the advantages of high desulfurization efficiency, moderate investment, and simple structure. However, the flue gas after desulfurization treatment is directly discharged through the chimney to cause white plume, the main reasons are as follows: [0003] 1) After the wet saturated flue gas is discharged into the atmosphere through the chimney, the temperature is rapidly cooled during the diffusion process, and the liquid droplets are condensed and precipitated to form a white plume; [0004] 2) The flue gas at the outlet of the wet desulfurization system contains a small amount of liquid droplets, SO 3 Aerosols, fly ash and other pollutants, ...

Claims

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Application Information

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IPC IPC(8): B01D53/00B01D5/00F28B1/06
CPCB01D5/0027B01D5/0036B01D53/002F28B1/06
Inventor 王天博初炜李永旺江浩任绍华冯胜彬马志刚刘洋韩玉维王大龙徐大融姜圆
Owner BEIJING CPCEP ENERGY CONSERVATION & ENVIRONMENTAL PROTECTION TECH CO LTD
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