System for removing sulfur dioxide in refined sulfuric acid

• Main Authors: DAI MING, ZHANG HENGCHANG
• Format: Patent
• Language: English
• Published: 18.02.2015
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The utility model belongs to the technical field of chemical equipment and in particular relates to a system for removing sulfur dioxide in refined sulfuric acid. The system comprises a first removal device and a second removal device which have the same structure and are connected in series, wherein each removal device comprises a desorption tower and an air filter; a dry air supply pipeline is connected to an inlet in the side wall of the air filter; the outlet in the top of the air filter is connected to the air inlet in the bottom of the side wall of the desorption tower through a pipeline; a feeding hole in the top of the side wall of the desorption tower is connected to a discharge opening of a refined sulfuric acid production line through a pipeline; the air outlet in the top of the desorption tower is connected to a converter of the refined sulfuric acid production line through a pipeline; and the discharge opening in the bottom of the desorption tower of the first removal device is connected to the feeding hole in the top of the side wall of the desorption tower of the second removal device. The system also comprises a storage device consisting of two finished product tanks in parallel, wherein the discharge opening in the bottom of the desorption tower of the second removal device is connected to inlets of the two finished product tanks through pipelines.