Novel efficient desulfurization and denitrification agent

Abstract

The invention relates to a novel efficient desulfurization and denitrification agent. The novel efficient desulfurization and denitrification agent is prepared by taking solid waste slag as a main material and taking calcium hypochlorite as an auxiliary material, wherein the solid waste slag contains a certain quantity of iron and calcium playing an important role in desulfurization and denitrification of flue gas, and through determination, the content of average effective calcium in the waste slag is 20%, the content of average effective iron is 8.6%, the content of Fe<2+> is 5.8%, and the content of Fe<3+> is 2.6%. The novel efficient desulfurization and denitrification agent takes calcium hypochlorite as the auxiliary material and takes Ca(ClO)2 as an absorption medium for desulfurization and denitrification reaction, thereby having the following two advantages: (1) ClO- has very strong oxidizing property so as to be favorable for oxidizing SO2 and NO dissolved in water to SO4<2-> and NO3<-> which are in highest valence states respectively, and removing together; (2) a large amount of Ca<2+> exists in a reaction system, and the dissolution of slightly soluble CaSO4 is inhibited so as to be favorable for producing a solid precipitate and further promoting the movement of balance of the desulfurization and denitrification reaction to the positive direction. The novel efficient desulfurization and denitrification agent can effectively remove sulfur and nitrates in the flue gas, and fully utilize the solid waste slag so as to reduce the serious harm to the water and soil; simultaneously, the novel efficient desulfurization and denitrification agent can be fully utilized to perform desulfurization and denitrification on the flue gas so as to achieve the effects of purifying and protecting the environment.

Description

technical field [0001] The invention relates to a novel high-efficiency desulfurization and denitrification agent, relates to a flue gas desulfurization and denitrification agent, and belongs to the field of flue gas desulfurization and denitrification. Background technique [0002] The "three industrial wastes" are toxic, polluting, and difficult to deal with. If they are not properly treated, they will be discharged into the environment (atmosphere, waters, soil) if they fail to meet the specified discharge standards, and exceed the allowable amount of the environment's self-purification capacity. It pollutes the environment, destroys the ecological balance and natural resources, and affects industrial and agricultural production and people's health. The utilization of flue gas desulfurization and denitrification and solid waste residue has always been one of the most common concerns in academia and industry. In order to build a resource-saving and environment-friendly soc...

AI Technical Summary

Problems solved by technology

[0002] The "three industrial wastes" are toxic, polluting, and difficult to deal with. If they are not properly treated, they will be discharged into the environment (atmosphere, waters, soil) if they fail to meet the specified discharge standards, and exceed the allowable amount of the environment's self-purification capacity. Produce pollution to the environment, destroy ecological balance and natural resources, and affect industrial and agricultural production and people's health