Compound desulfurization and denitration agent for flue gas and preparation method of compound desulfurization and denitration agent

Abstract

The invention provides a compound desulfurization and denitration agent for flue gas and a preparation method of the compound desulfurization and denitration agent. The compound desulfurization and denitration agent comprises the following raw materials by weight percent: 10%-20% of sludge, 5%-10% of urea, 4%-6% of urea-formaldehyde condensation compound, 0.5%-1% of ammonium salt, 0.5%-1% of lanthanum nitrate, 0.02%-0.1% of nickel oxide, 15%-30% of soft manganese mineral powder and the balance of water. The preparation method comprises the steps of weighing the sludge, the urea, the urea-formaldehyde condensation compound, the ammonium salt, lanthanum nitrate, nickel oxide, the soft manganese mineral powder and water in proportion, mixing, and stirring until a viscous material is formed. According to the preparation, the desulfurization and the denitration can be simultaneously realized, the desulfurization and the denitration effects are high, and the operation time is long.

Description

technical field [0001] The invention belongs to the technical field of flue gas treatment, and in particular relates to a flue gas composite desulfurization and denitrification agent and a preparation method thereof. Background technique [0002] Boiler flue gas contains harmful gases such as sulfur oxides and nitrogen oxides. In the prior art, desulfurization and denitrification devices are used to preliminarily treat the boiler flue gas and then discharge it. However, the temperature during desulfurization and denitrification in the prior art needs to be higher than 900°C. However, when the flue gas is transmitted to the desulfurization and denitrification device, the temperature has dropped to about 800°C, and the desulfurization and denitrification effect is seriously affected. [0003] At present, most of the desulfurization and denitrification integrated technologies used are the combination of desulfurization and denitrification, that is, SO2 and NOx are treated sepa...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high investment in fixed assets, high operation and maintenance costs, and complicated operation of the existing desulfurization and denitrification technology, the present invention proposes a flue gas composite desulfurization and denitrification agent. high, long run time