CAJ | 학술논문

休风时对 COREX 熔融气化炉进行风口取样,通过对风口试样的检测分析,用压差度的倒数表示炉内气相对料柱透液性的影响,用空隙度和温度强度的乘积表示炉内的渣铁液相对料柱透液性的影响,建立了表征熔融气化炉料柱透液性的公式。对两批风口试样的研究发现,熔融气化炉内不同位置风口试样的透液性指数与相应位置的滞留铁比呈现一致的对应关系。进一步分析了透液性指数的影响因素,发现在炉况不顺时,未反应完全的酸性脉石直接落入炉缸,导致沿风口径向部分位置的渣样熔化温度高于1500℃,影响了渣铁流动性。提出了增加料层厚度、采取合理的造渣制度、控制均匀的煤气流分布等技术措施,为改善熔融气化炉内料柱的透液性提供帮助。
휴풍시대 COREX 용융기화로진행풍구취양,통과대풍구시양적검측분석,용압차도적도수표시로내기상대료주투액성적영향,용공극도화온도강도적승적표시로내적사철액상대료주투액성적영향,건립료표정용융기화로료주투액성적공식。대량비풍구시양적연구발현,용융기화로내불동위치풍구시양적투액성지수여상응위치적체류철비정현일치적대응관계。진일보분석료투액성지수적영향인소,발현재로황불순시,미반응완전적산성맥석직접락입로항,도치연풍구경향부분위치적사양용화온도고우1500℃,영향료사철류동성。제출료증가료층후도、채취합리적조사제도、공제균균적매기류분포등기술조시,위개선용융기화로내료주적투액성제공방조。
Tuyere sampling was conducted in a COREX melter gasifier during down time. Through the detection analysis of tuyere samples, the effect of gas phase on the liquid permeability of the stock column was expressed by the reciprocal of pressure difference degree, while the effect of liquid phase on the liquid permeability was expressed by the product of voidage and temperature intensity. Based on those, a formula was established to characterize the liquid permeability of the stock column. Investigations on 2 batches of tuyere samples show that there is a compatible corresponding relation between the liquid permeability index and residue iron of tuyere samples at different positions in the melter gasifier. Moreover, some influencing factors of the liquid permeability index were analyzed. it is found that residual acid gangue can directly fall into the hearth in unsteady furnace conditions, which leads to the slag melting temperature in a certain position over 1500 ℃ and thus affects the fluidity of iron slag. Several technical measures are proposed, such as increasing material layer thickness, adopting a proper slagging regime, and controlling uniform gas flow distribution, to provide helps to improve the liquid permeability of the stock column in the melter gasifier.