《江苏科技信息》杂志社

Jiangsu Science & Technology Information Magazine Agency

关键词: 印刷车间, 污染物浓度, 自然对流, 集气罩, 数值模拟

Abstract:

In this paper, a large-scale printing workshop is taken as the research object, and the air distribution in the workshop and the movement track of the polluted gas volatilized by the printing press are studied by CFD modeling and the numerical simulation methods. The velocity pattern of natural ventilation and forced ventilation with gas collector in workshops are predicted, and the improvement effect of gas collector on air quality of workshop is analyzed. The results show that natural ventilation has some influence on the movement of polluted gases. Moreover, the negative pressure suction of the gas collector can greatly improve the emission of polluted gases. In the application process, in order to further improve the absorption efficiency of the gas collecting hood, the air curtain can be distributed around the gas collecting hood by adding nozzles, which can wrap the printing machine and inhibit the escape of polluted gas. The research results can provide reference for the practical pollutant treatment in the printing workshop.

Key words: printing workshop, pollutant concentration, natural convection, gas collector, numerical simulation