The operation characteristics and the energy-saving based importance of water steamejector was analyzed, the effect of the ejector in practical use was presented.
分析了此类喷射器的工作特点和节能意义，介绍了此类喷射器在实际中的使用情况。
2
The vacuum system process of PET unit, the design of EG steamejector shape and support, the selection of support spring and the main points in the ejector pipe design are introduced.
The property of steamejector is analyzed. The optimize method of temperature curve and an algorithm of intelligent predictive pressure control are presented. The optimize control system is designed.