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["La转让热油加热氮气,应选用列管式换热器: 流量:152?/h 氨气进出口温度:85-115℃ 压力:3kpa 注:氮气含有15%(体积比)的甲醇气体,和少量粉尘≤5mg/Nm3 传热油进出口温度:

2020-05-11View Original

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导热油加热氮气,列管式换热器选型: 氮气流量:15000m?/h 氮气进出温度:85-115℃ 压力:3kpa 注:氮气里面含有15%(体积比)甲醇汽体,和少量粉尘≤50mg/Nm3 导热油进出口温度:160-180 因有粉尘,担心原先选型的翅片换热器积灰,打算重新选型使用列管式换热器,气体走管程,导热油走壳程。 求助 1:传热系数应该多少合适? 2:现有一台列管换热器,管外径25mm,壁厚2mm,长度3米,管子数量248根,标示上写的换热面积60㎡,是否够用?
Reply #22020-05-11
不经济!可以做成蛇管式!氮气预处理!
Reply #32020-05-11
氮气预处理比较麻烦,盘管也考虑过。 现成的那个列管式的,只要能够用就好。 我用取传热系数50w 算了一下≈40㎡ 传热系数会不会取大了?
Reply #42020-07-09
一看这种技术贴,我就不敢大声说话了

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