A sulfuric acid defluorination system and defluorination process

Abstract

This invention belongs to the field of sulfuric acid defluorination technology, and particularly relates to a sulfuric acid defluorination system and a defluorination process for the system. The defluorination tank has an inlet and an outlet. An inner tank is formed within the internal gap of the defluorination tank, creating a collection space A between the defluorination tank and the inner tank. A silicon column is placed within the internal gap of the inner tank, forming a primary defluorination space B between the inner tank and the silicon column. The inlet is located above the primary defluorination space B. The silicon column has a longitudinally arranged through hole, forming a secondary defluorination space C. In this sulfuric acid defluorination system, the silicon column is combined with negative pressure, allowing for two defluorination operations under negative pressure. The defluorination operation is continuous, improving the defluorination effect. Furthermore, by setting up a collection pipe, and having sulfuric acid enter the collection space A from the secondary defluorination space C through the collection pipe, the negative pressure value in the system can be kept stable, avoiding fluctuations in the negative pressure value from affecting the defluorination effect.