導熱油在超出其熱穩(wěn)定性限制的條件下運用會發(fā)作快速熱裂解，其熱物理性質(zhì)參數(shù)關(guān)于爐內(nèi)傳熱效率和介質(zhì)溫度變化具有十分重要的影響。由于導熱油的超溫裂解會招致鍋爐管結(jié)焦，惡化傳熱，引發(fā)爐管爆裂。
　　When the heat transfer oil is used beyond its thermal stability limit, it will undergo rapid thermal cracking. Its thermophysical property parameters have a very important influence on the heat transfer efficiency and medium temperature change in the furnace. Due to the over temperature cracking of the heat transfer oil, the coking of the boiler tube will be caused, the heat transfer will be deteriorated, and the furnace tube will burst.
　　形成導熱油在爐膛內(nèi)走漏熄滅，故導熱油鍋爐的設(shè)計應該滿足所選用導熱油的熱穩(wěn)定性條件，運用其熱物性參數(shù)停止鍋爐的傳熱計算、構(gòu)造設(shè)計和平安評價，應防止在鍋爐內(nèi)部任務部位發(fā)作導熱油過熱超溫的問題。
　　The heat transfer oil leakage in the furnace is formed, so the design of the heat transfer oil boiler should meet the thermal stability conditions of the selected heat transfer oil. The use of its thermal physical parameters to stop the heat transfer calculation, structural design and safety evaluation of the boiler should prevent the overheating of the heat transfer oil at the internal task position of the boiler.
　　鍋爐受熱面邊境層內(nèi)的導熱油液膜溫度應遭到嚴厲限制。鍋爐設(shè)要依據(jù)所選用導熱油的允許液膜溫度，對爐膛內(nèi)輻射受熱面上的熱流密度停止限制，并對爐管內(nèi)導熱油的流速及溫度加以控制。此外，導熱油鍋爐的輻射受熱面布置應當防止火焰對爐管的直接沖刷，由于鍋爐運轉(zhuǎn)時，假如爐膛內(nèi)發(fā)作部分火焰直接沖刷爐管，將會招致該路管道額熱流密度增大，并招致導熱油液膜溫度升高。

　　The liquid film temperature of heat transfer oil in the boundary layer of boiler heating surface should be strictly limited. During boiler design, the maximum heat flow density on the radiant heating surface in the furnace shall be limited according to the maximum allowable liquid film temperature of the selected heat transfer oil, and the flow rate and temperature of the heat transfer oil in the furnace tube shall be controlled. In addition, the layout of the radiation heating surface of the heat transfer oil boiler should prevent the direct erosion of the flame on the furnace tube. Because when the boiler is running, if part of the flame in the furnace directly washes the furnace tube, it will lead to the increase of the heat flow density of the pipeline and the rise of the temperature of the liquid film of the heat transfer oil.
　　導熱油在鍋爐內(nèi)發(fā)作走漏會招致火災或爆炸。引發(fā)導熱油在鍋爐內(nèi)走漏的主要緣由是導熱油結(jié)焦致使爐管過熱爆裂、爐管焊接缺陷、或鍋爐構(gòu)造及爐管資料存在問題。一旦鍋爐發(fā)作導熱油走漏事故，如何盡快熄滅爐膛內(nèi)熄滅的燃料并切斷導熱油和空氣的供給便成為控制事故擴展和減小其危害水平的關(guān)鍵。
　　Leakage of heat transfer oil in boiler will cause fire or explosion. The main reason for the leakage of heat transfer oil in the boiler is that the coking of heat transfer oil causes the furnace tube to overheat and burst, the welding defect of the furnace tube, or the problem of the boiler structure and the furnace tube data. Once the leakage of heat transfer oil occurs in the boiler, how to extinguish the extinguished fuel in the furnace and cut off the supply of heat transfer oil and air as soon as possible becomes the key to control the expansion of the accident and reduce the hazard level.