有色设备

The resistance of the conversion section of the acid production system in a smelter is too large, result the SO2 concentration difficult to increase, and the fan approaches the rated maximum power, which increases the operation cost and seriously restricts the capacity improvement of the system. By measuring the inlet and outlet pressure of the converter and heat exchanger in the conversion section, it is found that the shell side resistance of the five dish ring heat exchangers greatly exceeds the design value. To solve this problem, the CFD fluid simulation software Fluent was used to establish the shell side fluid domain model of No.Ⅰ~Ⅴ heat exchanger, and the resistance distribution was calculated. Based on the original structure, the pressure loss of the shell side of heat exchanger was reduced to a certain extent by modifying the inlet structure.