The tube bank of the top circulation heat exchanger in the catalytic cracking unit is resonating, and vibrations can be felt throughout the entire platform. Please analyze the reasons!
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The tube bundle of the top circulation heat exchanger in the catalytic cracking unit is vibrating, and the entire platform can feel this vibration!
Is it a heat exchanger for hot water and top circulation? Does all of the top circulation flow through the heat exchanger? Let’s try having some of the top circulation flow through the hot path
1 The poster has confirmed that it is tube bundle vibration; this means that the frequency of the fluid matches the natural vibration frequency of the tube bundle. 2 Since the natural vibration frequency of the tube bundle cannot be changed during operation, attempts are made to alter the frequency of the fluid flow, with changing the flow rate being the simplest method. 3 However, in well-designed heat exchangers, the natural vibration frequency of the tube bundle is kept far away from the frequency at which pulsations may occur in the fluid, thus reducing the likelihood of resonance. Could the condition of the owner be caused by other factors, such as reaching a critical point for phase change, with the phase undergoing frequent changes dynamically, thereby generating noise and vibration? 4 In any case, users have limited options for adjustment; they can only change the flow rate, pressure, and temperature of the fluid in the tube side or the shell side. 5 Give it a try