High-SO2 concentration pressure smoke desulfuration method and device

Abstract

The invention discloses a high-concentration smoke desulfuration method and a high-concentration smoke desulfuration device. High-sulfur dioxide concentration smoke passes through a water spray cooler, a Venturi prewasher, a bubbling contact area, a spray packed tower and a desulfuration separation tower in turn, absorbent circulating tanks in two stages are provided, the absorbent in the absorbent circulating tank in the first stage is delivered to the Venturi prewasher and the spray packed tower; the liquid phase materials discharged from the Venturi prewasher and the spray packed tower arereturned to the absorbent circulating tank in the first stage, and the bubbling contact area is arranged in the absorbent circulating tank in the first stage; and the absorbent in the absorbent circulating tank in the second stage is delivered to a dynamic wave washing tower and a spray separation tower, and the liquid phase materials discharged from the dynamic wave washing tower and the spray separation tower are discharged into the absorbent circulating tank in the second stage. The high-concentration smoke desulfuration method can greatly increase desulfuration rate by optimizing a desulfuration process and the desulfuration device, and can meet the desulfuration and purification requirements of high-sulfur dioxide concentration smoke even if low-solubility alkaline reagents such as calcium and magnesium are adopted.

Description

technical field [0001] The invention relates to a high-concentration pressurized flue gas desulfurization method and device, belonging to the field of environmental treatment methods. Background technique [0002] SO 2 It is a global air pollutant, and its main hazard is the formation of acid rain. Also, SO in the environment 2 It can lead to a decline in children's immune function, and an increase in the prevalence of respiratory and eye diseases among the general public. In the refinery, the catalytic gasoline adsorption desulfurization device is a new type of production device, which generates flue gas during the regeneration process of its adsorbent, in which the concentration of sulfur dioxide is generally 10,000-100,000 mg / m 3 , the oxygen content is generally 2000 ~ 10000mg / m 3 , must carry out flue gas desulfurization treatment. [0003] Currently, flue gas desulfurization mainly adopts dry method and wet method, among which wet flue gas desulfurization technolo...

AI Technical Summary

Problems solved by technology

Although this device can improve the desulfurization effect to a certain extent, it still cannot achieve the desired desulfurization effect for high-concentration flue gas.

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