The vibration signal is seldom applied to study the nonlinear characteristics of the fluidization system with boiling flows even though it is very important to understand the vibration behavior of the system. In this paper, the multi-value phenomenon of correlation dimension and its relationship with multi-scale flow behavior were investigated based on the chaotic analyses of the vibration acceleration signals as well as pressure drop signals measured from a single graphite tube in the vapor-liquid-solid fluidized bed evaporator. With wavelet decomposition and signals reconstruction techniques, the characteristics of the medium and low frequency signals are displayed. Nonlinear vibration behavior in multi-phase boiling flow system was analyzed at varied solid holdup and steam gauge pressure. The influence of solid particles on the correlation and regularity of the motion of the system is more obvious than that of the steam pressure. Three-scales were obtained, namely the macro-scale, meso-scale and the micro-scale, respectively. It is an effective method to characterize the multi-scale behavior in the multi-phase fluidized bed evaporator by measuring and analyzing the vibration acceleration signals. (C) 2016 Elsevier B.V. All rights reserved.