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空气冷却器通常都是按夏季空气温度90、95、100°F(32.2、35、37.8℃)进行设计的,但在冬季也可能遇到进口空气温度为10、20、30°F(-12.2、-6.67、-1.1℃)的低温空气。这种低温进口空气将给空冷器的操作带来以下问题:冻结、凝固、结蜡、生成水合物、引起滞流以及与露点时的冷凝、分配不良等有关的障碍,这些因素都可能引起腐蚀。本文将讨论为消除这些问题而提出的设计方法。炼油厂用空冷器经常会碰到以下一些液体,其凝固点分别为:苯42°F(5.56°℃)、二甲苯55.9°F(13.3℃)、环已烷43.8°F(6.6℃、苯酚105.6°F(40.9℃)、单乙
Air coolers are typically designed for summer air temperatures of 90, 95, 100 ° F (32.2, 35, 37.8 ° C) but may also experience inlet air temperatures of 10, 20, 30 ° F (-12.2 , -6.67, -1.1 ° C). Such low temperature inlet air will cause problems with the operation of the air cooler: freezing, solidifying, waxing, hydrate formation, stagnation, and other obstacles associated with condensation at the dew point, poor distribution, etc., all of which may cause corrosion . This article discusses the design methods proposed to eliminate these problems. Refinery air coolers often encounter the following liquids with freezing points of benzene 42 ° F (5.56 ° C), xylene 55.9 ° F (13.3 ° C), cyclohexane 43.8 ° F (6.6 ° C, phenol 105.6 ° F (40.9 ° C), single B