High-conversion-rate smelting flue gas acid-making conversion device

• Main Author: SUN DEZHONG
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2021
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The utility model discloses a high-conversion-rate smelting flue gas acid-making conversion device which comprises a flue gas conveying pipeline, a booster blower and a conversion device are arranged on the flue gas conveying pipeline, the conversion device comprises four catalyst layers from bottom to top, and the four catalyst layers are a first catalyst layer, a third catalyst layer, a second catalyst layer and a fourth catalyst layer in sequence. The first catalyst layer, the second catalyst layer, the third catalyst layer and the fourth catalyst layer are sequentially communicated, the outlet end of each catalyst layer is correspondingly connected with a heat exchanger for cooling converted flue gas, and the flue gas enters the next catalyst layer after being cooled by the heat exchanger; the fourth catalyst layer is communicated with a fuming sulfuric acid tower in a dry absorption process, and a gas return pipe for secondary conversion of flue gas is arranged on the fourth catalyst layer; after oxidati