Analysis and optimization of induced exhaust air flow control effect in copper converter fugitive gas collection systems

The exhaust system of copper converters has the problem of high-temperature smoke escape, and the roof hood is often used for recapturing in the project. In order to explore the feasibility of installing a induction jet device above the converter eco-friendly hood system to transport high-temperature smoke to the roof hood, this paper uses field test and CFD numerical simulation to study the influence of the roof hood exhaust system on the upper thermal environment of the plant with or without induction jet, and further analyses its influence on the capture efficiency of high-temperature airborne pollutants (SO2gas and particles). The results show that the thermal environment in the plant is significantly improved after the addition of the induction device, and the average temperature in the upper space in the plant decreases from 64.5 ℃ to 48.1 ℃. The local exhaust system combined with the roof hood significantly improves the capture efficiency of SO2gas and particles, from 67.4% and 72.1% to 91.1% and 94.7%, respectively. According to the numerical simulation of the high-temperature smoke control effect, the recommended selection and parameter range of high-temperature axial fans are given.