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26
2024
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04
Working principle of dry desulfurization and denitrification equipment
Author：
Dry desulfurization and denitrification equipment The working principle is a technology involving chemical reactions and physical processes, designed to remove sulfur oxides (SOx) and nitrogen oxides (NOx) from flue gas to meet environmental emission standards. The working principle will be elaborated below.
First, dry desulfurization technology mainly relies on the reaction between the absorbent and sulfur oxides in the flue gas. Absorbents usually exist in particulate or powder form. When these absorbents come into contact with boiler exhaust gas, they react chemically with the sulfur oxides. These reactions cause the sulfur oxides to be fixed on the absorbent, thus removing them from the flue gas. After this series of reactions, the product is in a dry powder form, producing no waste sulfur or water vapor, thus being relatively environmentally friendly and not causing corrosion to the boiler equipment.
In dry desulfurization technology, the charged dry injection method and the plasma method are two common methods. The charged dry injection method improves desulfurization efficiency by increasing the degree of reaction and reducing the reaction process. The plasma method uses high-energy electrons to decompose ammonium nitrate fertilizer and ammonium sulfate, which can be further used in agricultural production.
As for denitrification, dry denitrification technology usually involves reducing the generated NOx to N2, thereby removing NOx from the flue gas. This process also relies on specific catalysts or reactants that can react with NOx in the flue gas, converting it into harmless nitrogen.
It is worth noting that when the dry desulfurization and denitrification equipment is operating, the flue gas usually first passes through a waste heat recovery device and a heat exchanger to reduce its temperature and recover some heat. Then, the flue gas enters the dust collector to remove particulate matter. Next, the flue gas enters the integrated desulfurization and denitrification tower, where desulfurization and denitrification reactions occur simultaneously, effectively removing sulfur oxides and nitrogen oxides from the flue gas. Finally, the treated flue gas is temperature-controlled by another heat exchanger before being discharged into the atmosphere.
In general, dry desulfurization and denitrification equipment efficiently removes sulfur oxides and nitrogen oxides from flue gas through chemical reactions and physical processes, making an important contribution to environmental protection. With continuous technological advancements, the efficiency and environmental performance of such equipment will be further improved to meet increasingly stringent environmental requirements.
The company mainly produces various dust removal, desulfurization, denitrification, VOCs waste gas purification, wastewater treatment, noise reduction, complete sets of industrial electrical control systems and equipment, and researches and develops waste gas, wastewater, waste residue, and noise treatment equipment.
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