Wet flue gas desulfurization device and method
A wet flue gas desulfurization and sintering flue gas technology is applied in separation methods, chemical instruments and methods, dispersed particle separation, etc. Insufficient response and other problems to achieve the effect of long residence time, environmental protection and waste reduction
Active Publication Date: 2013-12-11
INNER MONGOLIA BAOTOU STEEL UNION
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For example, the invention patent with the publication number CN101890291A discloses a sintering flue gas desulfurization method. The lime spray liquid sprayed through the nozzle is mixed with the sintering flue gas after the dust removal operation, and the purified flue gas and by-product slurry are obtained after the reaction. Although the desulfurization agent spray liquid and the SO in the sintering flue gas 2 However, due to the fast flow rate of the flue gas, the desulfurization agent spray liquid cannot fully react with the sintering flue gas, resulting in low desulfurization efficiency
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[0028] The present invention will be further described below in conjunction with drawings and embodiments.
[0029] The working principle of the invention is: the sintering flue gas is extracted by the main exhaust fan and connected to the absorption tower through a pipe, and a rotor flowmeter is installed on the pipe to ensure accurate flow control. The flue gas enters the absorption tower through the pipe and sprays outward through the injection pipe Flue gas, the injected flue gas reacts with the prepared desulfurization absorbent emulsion, and after the reaction, the purified flue gas and by-product slurry are obtained. The purified flue gas is discharged from the upper part of the absorption tower, and the by-product slurry is oxidized and filtered by the oxidation fan Finally, the supernatant is returned to the slurry tank for reuse, and the gypsum is dehydrated to make gypsum products.
[0030] like figure 1 Shown is a schematic structural view of the wet flue gas desu...
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The invention discloses a wet flue gas desulfurization device. The wet flue gas desulfurization device comprises a main exhaust fan and an absorption tower, wherein a jet pipe is arranged in the absorption tower; the main exhaust fan is connected with the jet pipe through an air inlet pipe; a flowmeter is arranged on the air inlet pipe, and through holes are formed in the jet pipe; an air outlet is formed in the top of the absorption tower, an air outlet pipe is connected with the air outlet; a flue gas analyzer is arranged on a connecting pipe between the air outlet pipe and the air inlet pipe; an agitator is arranged in the absorption tower and is powered by utilizing an electric motor; a discharge pump is connected with a slurry discharge pipe at the bottom of the absorption tower. The invention further discloses a wet flue gas desulfurization method. Flue gas is purified through the desulfurization method, so that the retention period of the flue gas can be prolonged, and the desulfurization efficiency can be improved.
Description
technical field [0001] The invention relates to the field of air pollution control, in particular to a wet flue gas desulfurization device and a desulfurization method thereof. Background technique [0002] In recent years, my country's iron and steel industry has developed rapidly, and the output of crude steel has ranked first in the world for many years. However, a large amount of fuel and ore are consumed while producing steel, and a large amount of pollutants are produced. SO in the steel industry 2 The discharge of pollutants such as pollutants has been second only to the discharge of the power industry, ranking second. The SO produced in the iron and steel industry, especially during the sintering process 2 , CO 2 The emission of waste gas such as iron and steel accounts for 40% to 80% of the total emission of steel. Therefore, the application of sintering flue gas desulfurization technology is imminent. [0003] At present, domestic and foreign sintering desulfur...
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Inventor 刘周利邬虎林翟纪敏白晓光吕志义李玉柱孙睿付国伟张永王敏陈革
Owner INNER MONGOLIA BAOTOU STEEL UNION