加压溶气气浮微气泡产生机理及工程应用研究

摘要

目前广泛应用的加压溶气气浮设备的最主要问题是运行能耗过大.通过对加压溶气气浮设备微气泡产生机理的研究,得出了加压溶气系统在微气泡产生过程中的两个耗能关键点,并提出降低能耗的改进措施.指出了压力溶气罐内空气溶解过程中气体分散成核步骤中最小能量△f的存在及其理论表达式.阐述了叶轮散气和气浮泵气浮装置在微气泡发生机理方面的转变和节能方面的优势.%The most important problem of the widely used pressure dissolved air flotation equipment is large energy consumption. By means of studying the mechanism of micro-bubbles formation, key points of the two energy-consuming processes are obtained, and the corrective measures for the reduction of energy consumption are put forward. The existence of the minimum energy △f in the air dispersing and nucleation steps, during the process of air dissolving inside the pressure dissolved gas pot, and the theoretical expression of it are pointed out. The transform of impeller air diffusing and gas flotation pump equipment in the aspect of micro-bubble formation mechanism and their superiority in energy saving are expounded.