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Chemical Effects at the Coke-Oven Lining. 2. Reactions within the Heating System
Coke and Chemistry ( IF 0.4 ) Pub Date : 2022-08-15 , DOI: 10.3103/s1068364x22050076
D. G. Zublev , V. D. Barsky , A. V. Stenyushkin

The probability of reactions in coke batteries between the coke oven lining and components in the heating system is considered. The corresponding temperature ranges are identified. The products of thermodynamically possible reactions are FeO and Fe3O4, carbon dioxide, carbonates of calcium, sodium, and potassium (CaCO3, Na2CO3, K2CO3), and also CaSiO3, Na2SiO3, and K2SiO3. The carbon dioxide (CO2) formed in the reactions escapes with the combustion products. The melts formed always move from the heating channel to the coking chamber along the temperature gradient in the capillary system of the silica brick. The reactions that occur determine the composition and quantity of the melts that will be deposited in the slag zones at the lining surface in the furnace chamber and will then make contact with the coke. In the regenerators and floor channels, the reactions occur at the lining surface, with periodic change in the direction of melt motion as the furnace tips. Therefore, in that case, melts are only deposited in slag zones, where they modify the chemical composition of the lining and thus give rise to local defects. These lining defects are difficult to detect and even harder to eliminate. Accordingly, new diagnostic methods are under development for the state of the lining in the heating system.



中文翻译:

焦炉衬里的化学效应。2. 加热系统内的反应

考虑了焦炉内衬和加热系统组件之间的焦炭电池发生反应的概率。识别出相应的温度范围。热力学可能反应的产物是 FeO 和 Fe 3 O 4、二氧化碳、钙、钠和钾的碳酸盐(CaCO 3、Na 2 CO 3、K 2 CO 3),以及 CaSiO 3、Na 2 SiO 3,和K 2 SiO 3。二氧化碳(CO 2) 在反应中形成的物质与燃烧产物一起逸出。形成的熔体总是沿着硅砖毛细管系统中的温度梯度从加热通道移动到焦化室。发生的反应决定了熔体的成分和数量,这些熔体将沉积在炉膛内衬表面的渣区中,然后与焦炭接触。在蓄热室和底板通道中,反应发生在炉衬表面,熔体运动方向随着炉尖而周期性变化。因此,在这种情况下,熔体仅沉积在熔渣区,在那里它们会改变衬里的化学成分,从而导致局部缺陷。这些衬里缺陷难以检测,甚至更难以消除。因此,

更新日期:2022-08-15
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