convection section的意思|convection section的解释-里氏词典

[建] 对流部分

It must be noted, however, that refinery gas usually generates a certain amount of steam in the convection section of refinery gas-fired radiant furnaces.
不过必须指出，在燃气热辐射锅炉的对流过程中，炼厂气一般会产生一定数量的蒸汽。
Therefore, the process feed, combustion air, and fuel gas should be preheated as much as possible before considering steam generation in the convection section.
因此，在考虑通过对流生产蒸汽之前，应尽量将过程原料、烧空气和燃料气进行预热处理。
The in servie tubular heaters built early in refineries and chemical plans have low thermal load and low heat efficiency, therefore measures for technical reform are offered, including(1) enlarging the surface area of convection
针对早期建造的炼油厂和化工厂在役管式加热炉热负荷和热效率低的状况，提出了若干技术改造措施包括，增大对流管表面积以增大对流段的热负荷；增加辐射管的换热面积；修正烟囱高度；换用新型燃烧器，变自然通风为强制供风，以增大燃烧器的发热量，减小过剩空气系数，节省燃料2%3%在对流段和烟囱之间增设空气预热器以提高空气入炉温度；采用高温辐射涂料增强辐射换热效果，从而增加热源对炉壁的辐射传热量和炉管的传热量等。

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