CAJ | 학술논문

以某化肥装置天然气气化炉的典型工业运行实测数据为基准,采用稳态传热理论对气化炉拱顶外壁温度进行理论传热计算校验,通过对拱顶耐火隔热衬里层传热关键因素的灵敏度分析,表明莫来石隔热砖层对拱顶外壁温度的影响最大,从理论上证明了控制拱顶耐火隔热衬里层传热的关键物性参数是隔热砖的导热系数。因此,在拱顶耐火隔热衬里层设计计算中选取合适的隔热层导热系数是防止拱顶外壁出现超温的关键,从而为气化炉拱顶隔热衬里层设计和传热计算提供理论支持依据。
이모화비장치천연기기화로적전형공업운행실측수거위기준,채용은태전열이론대기화로공정외벽온도진행이론전열계산교험,통과대공정내화격열츤리층전열관건인소적령민도분석,표명막래석격열전층대공정외벽온도적영향최대,종이론상증명료공제공정내화격열츤리층전열적관건물성삼수시격열전적도열계수。인차,재공정내화격열츤리층설계계산중선취합괄적격열층도열계수시방지공정외벽출현초온적관건,종이위기화로공정격열츤리층설계화전열계산제공이론지지의거。
This article,taking the actually-measured data during a typical commercialized running of the natural gas gasifier of a chemical fertilizer plant as a basis,has proceeded a verification of theoretical heat transfer computation for the outer wall temperature on gasifier dome by employing a heat transfer theory in steady state,and with the sensitivity analysis of key factors in the heat transfer of dome refractory heat insulation lining the article has indicated that the effect of Mullite bricks on the temperature of dome outer wall is the biggest and this has theoretically proved that the essential physical parameter controlling the heat transfer of refractory heat insulation lining on dome is the thermal conductivity of bricks;hence,to select an appropriate thermal conductivity of heat insulation layer in the heat transfer computation and setting-up design of dome refractory heat insulation lining is the key in preventing the excess temperature presented on dome outer wall and thus,a theoretical support basis has been provided for both the setting-up design and heat transfer computation of heat insulation lining on gasifier dome.