Journal of Chemistry and Chemical Research

The low-temperature waste heat generated in the drying and absorption process of sulfuric acid production is characterized by high energy density, concentrated distribution, and significant conversion efficiency, making it a key factor in improving resource efficiency and reducing energy consumption. Its distribution is influenced by flue gas composition, acid concentration distribution, temperature gradients, and the operating status of the heat recovery tower. Without effective recovery, this waste heat not only leads to energy waste but also exacerbates equipment corrosion and system load. By analyzing the distribution patterns, the formation mechanisms and transfer pathways can be revealed, providing theoretical support for waste heat recovery. The research results show that the low-temperature waste heat exhibits coupled stage-specific and regional characteristics, and its rational utilization can significantly enhance recovery efficiency, thereby promoting clean production and energy conservation.

Sulfuric acid production; Drying and absorption process; Low-temperature waste heat; Distribution characteristics; Energy recovery