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我厂地处北方,天气寒冷,春夏温差较大,对初常顶空冷器的正常操作带来了很大困难。1989年至1991年,由于空冷器翅片管堵塞冻凝造成泄漏,共计更新3台。由于空冷器是水平设置的,天气寒冷,风机角度不及时调节于10～13°的情况下,油汽自塔顶流入空冷器。在风机的作用下,有部分冷凝水与裸露的翅片管直接接触,慢慢地油汽与冷凝水产生汽阻流速越来越慢,管壁产生部分冰层,久而久之,部分管束被冻凝,产生泄漏。为防止冷凝液在翅片管内停留时间过长,油汽
Our factory is located in the north, cold weather, large temperature difference between spring and summer, the normal operation of the first air-cooled top has brought great difficulties. From 1989 to 1991, three units were leaked due to blockage of air-finned finned tubes causing freezing. As the air cooler is set horizontally, the weather is cold, the angle of the fan is not adjusted in time from 10 to 13 °, and the oil vapor flows into the air cooler from the top of the tower. Under the action of the fan, some of the condensing water is in direct contact with the bare finned tube. Slowly, the vapor-flow velocity of the oil-vapor and the condensed water is getting slower and slower, and some ice is produced on the wall of the tube. Over time, some of the bundles are frozen , Resulting in leakage. In order to prevent the condensate in the fin tube residence time is too long, oil vapor