考虑受热面传热的锅炉空气预热器外表面吹灰方法研究OA

Conventional soot-blowing methods neglect heat-transfer analysis of the air preheater heating surface,leading to irrational placement of pulse soot blowers.It firstly proposes an external-surface soot-blowing method for boiler air preheaters that explicitly con-siders heat transfer in the heating surface.Secondly,it analyzes heating-surface heat transfer of the air preheater,determines bounda-ry conditions,and establishe a numerical heat-transfer model of the air preheater.Finally,it employs a ZKD-36 gas-pulse soot blower to achieve the soot blowing of the boiler air preheater,and designs detailed blowing procedures.Experimental results show that after applying the proposed method,ash deposition on the external surface of the boiler air preheater is significantly reduced,demon-strating the effectiveness of the method in solving ash accumulation on the external surface of boiler air preheaters.It can reduce fuel consumption,lower operating costs and ensure the stable operation of the boiler system.