喷雾干燥是能耗较大的单元操作,节能工作十分重要.本文阐述了节能分析的基本方法、节能的影响因素和节能的措施,对喷雾干燥过程中的热量分配作了计算分析,并根据对喷雾干燥过程的研究及编制的程序,分析评价了各种操作因素对干燥过程能耗的影响,给出了干燥过程的节能措施.

The hydraulic expansion process of the tube to tubesheet joints of the boilers and heat exchangers was simulated by ANSYS/CAE software. The plate plate contact element was used to simulate the gap between the tube and tubesheet hole, the process of the tube is yielded plastic deformation and kept close to the tubesheet hole and act on it. The elastic plastic stress state of the joints during the hydraulic expansion process and the residual contact stress between the tube and tubesheet after the expansion pressure is unloaded can be obtained by the simulation analysis. It was found that this contact stress is not well distributed along the thickness of the tubesheet, high stress value is occurred in the tubesheet hole groove. High residual tensile stress is occurred in the transitional region of the tube in the inner side of the tubesheet.