Tangential gas intake desulfurization tower of semi-dry circulating fluidized bed

Abstract

The invention relates to a tangential gas intake desulfurization tower of flue gas desulfurization technology of a semi-dry circulating fluidized bed. The tower is characterized in that: a flue gas intake structure is tangentially connected with the desulfurization tower, a desulfurizer inlet is positioned at the central position of the bottom of the desulfurization tower, a feed back inlet is positioned at the lower part of the desulfurization tower and a flue gas outlet is positioned at the top of the desulfurization tower. The tangential gas intake desulfurization tower has the advantages of causing the flue gas to form strong rotating flow in the desulfurization tower, improving turbulent intensity of gas flow, maintaining full contact between a desulfurizer and the flue gas, and intensifying desulfurization reaction process and greatly improving the utilization ratio of the desulfurizer; and the tangential flue gas intake structure can help effectively lower pressure drop of the system.

Description

technical field [0001] The invention relates to a flue gas desulfurization tower, in particular to a circulating fluidized bed semi-dry flue gas desulfurization technology. The invention strengthens the turbulence intensity of the gas flow in the circulating fluidized bed desulfurization tower by setting a tangential air intake structure, so that the desulfurizer and the flue gas can fully contact, thereby improving the desulfurization efficiency. Background technique [0002] Circulating fluidized bed desulfurization technology is a semi-dry desulfurization technology for flue gas desulfurization. This technology is based on circulating fluidized bed. Through multiple cycles of desulfurization agent, the contact time between desulfurization agent and flue gas is prolonged, and the Utilization rate and desulfurization efficiency of desulfurizer. The main equipment of this technology is the desulfurization tower, and the desulfurization process of flue gas is carried out in ...

AI Technical Summary

Problems solved by technology

The present invention provides a flue gas tangential air intake structure in the desulfurization tower to form a swirling flow in the desulfurization tower, so as to solve the problem that the shear force of the flow field in the desulfurization tower is relatively small, the turbulence intensity of the airflow is not high, and the contact between the flue gas and the desulfurizer is not good. Sufficient, low utilization rate of desulfurizer

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