SYSTEM FOR RECOVERING SULFUR DIOXIDE FROM TAIL GAS BY USING WATER WASHING

摘要

Provided a system for recovering sulfur dioxide from tail gas by using water washing. The system comprises a water washing apparatus and a degassing apparatus. Circulating liquid outlets are disposed in lower parts or bottoms of the water washing apparatus and the degassing apparatus, and circulating liquid inlets are disposed in upper parts or tops. The circulating liquid outlet (11) of the water washing apparatus is connected to the circulating liquid inlet (8) of the degassing apparatus by using a pipeline, and the circulating liquid outlet (6) of the degassing apparatus is connected to the circulating liquid inlet (12) of the water washing apparatus by using a pipeline. The degassing apparatus is integrally placed above the horizontal line of the top of the water washing apparatus. By using a position difference method and the theory of gravity, the circulation of circulating liquid can be implemented without disposing any power apparatus between the water washing apparatus and the degassing apparatus, the process is simplified, the cost is saved, and energy conservation and environmental friendliness are achieved.