Experimental Study Of Fouling Preventing And Removing In A Horizontal Liquid-Solid Circulating Fluidized Bed Heat Exchanger

There is a common focus on the subject of preventing and removing the foulings in heat exchanger in the field of academia and industry. Multi-phase fluidization technique has been used in the process of preventing and removing the fouling. Inert solid particles were added to the heat exchanger in order to preventing and removing foulings and enhancement heat transfer, which has remarkable effect and can be applied widely.Focal point of this text was studying the influence of the capability of preventing and removing fouling and enhancing the heat transfer in a horizontal liquid-solid circulating fluidized bed heat exchanger. The capability of preventing and removing fouling and enhancing the heat transfer were reviewed, moreover the optimum operating conditions were proposed. Experimental data had been visualized by using Matlab software. The experimental results show that the fouling can be prolonged for adding particles, and solid particle can prevent fouling and enhance heat transfer. The more adding particles, the better heat transfer effect was. The heat transfer effect was better in high speed than low speed with adding particles. The coefficient of heat transfer increased with the heat flux. In the last, the mathematical model of horizontal fluidized bed heat exchanger was induced, by setting up linearity regression model, which can be applied to engineering.