Highly-atomized flue gas desulfurization method

Abstract

The invention discloses a highly-atomized flue gas desulfurization method. The method is characterized by including: utilizing a buffer agent and amphoteric oxidation to adsorb and remove pollutants in flue gas by means of spray atomization; continuing to treat wastewater to generate white carbon black; recycling reclaimed water. Compared with the prior art, the method has the advantages that liquid containing the buffer agent and amphoteric oxide is utilized to absorb and desorb sulfur dioxide, nitric oxide and organic compound in the flue gas by means of spray atomization mixing, so that air pollution is reduced, water consumption is low, desulfurization speed is increased, and production cost is lowered; desulfurized wastewater is utilized for precipitation to generate the white carbon black, desulfurization and treatment of the wastewater and waste residue are realized, and good economic benefit and social benefit are achieved.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a high-atomization flue gas desulfurization treatment method. Background technique [0002] With the development of industry and the improvement of people's living standards, environmental pollution is becoming more and more serious and people are paying more and more attention to environmental issues. How to improve environmental quality is a problem that people have been solving. my country's sulfur dioxide and nitrogen oxide emissions are huge, and sulfur dioxide And nitrogen oxides are the main substances of environmental pollution. In order to deal with the generated sulfur dioxide and nitrogen oxides, there are hundreds of desulfurization and denitrification technologies developed by various countries in the world. At present, the main online applications in my country are limestone-gypsum, ammonia desulfurization, seawater method, Various desulfurization and denit...

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Problems solved by technology

[0003] Limestone method: At present, this method is the most used for desulfurization in my country. The reason is that the technology is mature and the raw materials are easy to obtain, but it consumes a large amount of limestone resources, and desulfurization produces a large amount of CO2. Secondary pollution; the efficiency of desulfurization ash contained in the exhaust gas is low, resulting in aggravated air pollution

[0004] Double-alkali method: complex process, difficult to manage, large fluctuations in desulfurization and denitrification, the product after desulfurization is doped with various ash and NaSO4, NaSO4 is difficult to regenerate, and NaOH needs to be continuously replenished, thereby increasing the consumption of alkali, and the waste residue is difficult to handle

[0005] Seawater method: easily polluted by heavy metals in wastewater, subject to geographical restrictions, large investment

[0006] Ammonia method: difficult transportation and storage, complex process and large investment

General SMEs cannot invest

[0007] With the increasing environmental protection of desulfurization and denitrification in our country, many technologies can no longer keep up with the development of national conditions. The investment is large, the process is complicated, the utilization rate of waste residue is low, the power consumption is high, the transportation and storage are difficult, and it is easy to cause smog. A new desulfurization and denitrification process with small investment, simple process, easy automatic control, and no waste water and residue discharge, so as to adapt to the application of large, medium and small furnace types

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