| 摘要 |
PURPOSE:To surely perform deicing, by allowing gas, evaporated and increasing its temperature by a gas heater, to flow, after the gas passes in a heat transmitting pipe of an evaporator in regeneration for melting ice frozen adhering to an external surface of the pipe, together with gas flowing out from an evaporator in operation. CONSTITUTION:An air thermal evaporator 2' in regeneration, regulating a flow of its deicing gas by a regulating valve V5 from the upstream point of an LNG supply pipe line 4 to be introduced to a heating gas pipe line 7 and evaporating the gas to increase its temperature to a required level by a gas heater 3 using steam and warm water or thermal medium oil, allows the gas to flow into a heat transmitting pipe of the evaporator 2' in regeneration via a valve V'3. The evaporator 2', increasing temperature of a wall of the heat transmitting pipe by the heating gas and melting first frozen ice adhering to the external wall surface of the pipe, exfoliates the ice even if it is not fully melted, regenerating a surface of the heat transmitting pipe. |
