The chemical cleaning method of convection section tube for hydrogen manufacturing furnace was recommended.
介绍了制氢炉对流段炉管的化学清洗方法。
The burst part in convection section of a tube of F108 cracking furnace in alkene factory, Liaoyang Petrochmical Company, was analyzed.
针对辽阳石化分公司烯烃厂f 108裂解炉对流段炉管爆裂破坏进行了分析。
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、燃烧空气和燃料气进行预热处理。
Application of soldered finned tube to convection section of high hydrogenation heater in refinery is proved to be safe and reliable through industrial practice.
工艺应用实践表明，钎焊翅片管应用于炼油厂高压加氢加热炉对流段是安全可靠的。
Meanwhile, F108 was initially designed without HPSSH in convection section, and the saturated vapor generated was sent to vapor superheating furnace for superheating.
同时，最初设计时F108炉对流段无超高压蒸汽过热段（HPSSH），其产生的饱和蒸汽送到蒸汽过热炉进行过热。
It can be used to check the flexibility of the convection section when the feed and operation condition changes, and it can be used to design the cracking furnace of different scale and feedstocks.
可以很好地用来判断现有裂解炉对流段对改变原料和操作条件的适应性和设计各种规模和适应各种原料的裂解炉。
It is found that the convection heat transfer plays an important part in the bulk above the return flow section and the heat conduction only rises in the bottom region.
研究表明，回流口截面以上区域传热以对流方式为主，底部区域则主要是逐层导热。
The hot flue gases travel upward through a second section in which the heat transfer is mainly by convection.
热燃气向上通过第二部分，该部分以对流传热为主。
The measurement of heat flux in convection through a cross section can be made by measuring the temperature and the velocity of flow of the medium at certain point of the cross section.
测量流过某一截面上的对流热流量，可以归结为测量流过该截面上各点介质的温度和速度。
The measurement of heat flux in convection through a cross section can be made by measuring the temperature and the velocity of flow of the medium at certain point of the cross section.
测量流过某一截面上的对流热流量，可以归结为测量流过该截面上各点介质的温度和速度。
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