Desulfuration spray tower

Abstract

The invention discloses a desulfuration spray tower. The desulfuration spray tower comprises an absorption tower, a slurry tank and a flow disturbing device, wherein the upper part of the absorption tower is provided with a first spraying layer, a second spraying layer, a third spraying layer, a fourth spraying layer and a fifth spraying layer, and each of the first, second, third, fourth and fifth spraying layers is provided with a plurality of spray nozzles; the slurry tank is arranged at the lower part of the absorption tower; the flow disturbing device is arranged between an entrance of the absorption tower and the first spraying layer. The desulfuration spray tower has the beneficial effects that through arranging the five spraying layers, of which each is provided with the spray nozzles, the coverage of slurry of the spray nozzles reaches 250%, the slurry can be in full contact with fume, and thus, the desulfuration efficiency of a system is increased; through arranging the flow disturbing device, gas flow can flow towards the internal central position of the tower, the area of gas-liquid contacting is enlarged, and the utilization ratio of a desulfurating agent and the removal rate of sulfur dioxide are increased; the stable operation for a power plant host is guaranteed, and the stable operation for a desulfuration system is guaranteed, so that the occurrence of unit failure is effectively avoided; the cost is relatively low, so that the desulfuration spray tower has great economic significance.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a desulfurization spray tower. Background technique [0002] With the continuous development of China's economy, the issue of sulfur dioxide emissions has attracted more and more attention. Sulfur dioxide mainly comes from the combustion process of fossil fuels such as coal and petroleum, as well as the flue gas emissions from the roasting and smelting of ores. Among them, during the operation of coal-fired generating units, desulfurization devices are required to reduce the sulfur dioxide in the exhaust gas. [0003] In recent years, wet calcium-based flue gas desulfurization (FGD) technology has been widely used due to its advantages of safe and reliable operation, high desulfurization efficiency, high utilization rate of desulfurizer, and strong applicability. The spray tower has been fully used in desulfurization devices at home and abroad because of its few interna...

AI Technical Summary

Problems solved by technology

However, the slurry in the spray system in the existing desulfurization spray tower cannot fully contact the flue gas, resulting in low sulfur removal efficiency

The main reason is that the spray density of the spray tower is not uniform, and the coverage of the nozzle slurry is insufficient, so the contact between the flue gas and the circulating slurry along the tower wall is poor, resulting in insufficient absorption of the flue gas on the tower wall, resulting in escape phenomenon, and making the system Decreased desulfurization efficiency

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