發(fā)布時間：2018-11-18 20:04

【摘要】：為研究固定床熔渣氣化爐中氣化劑噴嘴安裝角度、噴嘴口徑、氣化劑射流速度與高速射流區(qū)深度的關系,利用�；�原理對工業(yè)級氣化爐高速射流區(qū)建立鐖50 cm二維冷態(tài)模型,采用精密皮托管測量顆粒床層中的氣體速度分布,并采用無量綱分析方法,對試驗數(shù)據(jù)進行處理。結果表明:射流穿透深度與噴嘴口徑的二次方大致成正比關系;射流深度隨噴嘴安裝角度的增大呈現(xiàn)先增加后減小的趨勢,使得射流深度最大的安裝角度為17°~20°;射流深度隨射流氣速增加呈增大趨勢,并擬合出氣化劑噴嘴安裝角度、射流速度、噴嘴口徑與射流區(qū)深度的無量綱關系式。
[Abstract]:In order to study the relationship between the installation angle, nozzle diameter, gasifier jet velocity and the depth of high speed jet zone in fixed bed slag gasifier, a two-dimensional cold model of 50 cm was established for the high speed jet zone of industrial grade gasifier by means of modeling principle. The velocity distribution of gas in the granular bed was measured by using a precise pitot and the experimental data were processed by dimensionless analysis method. The results show that the jet penetration depth is approximately proportional to the quadratic square of nozzle diameter, and the jet depth increases first and then decreases with the increase of nozzle installation angle, making the maximum installation angle of jet depth 17 擄~ 20 擄. The jet depth increases with the increase of jet gas velocity, and the dimensionless relationship between jet velocity, jet velocity and jet depth is fitted.
【作者單位】： 煤炭科學研究總院;煤炭資源高效開采與潔凈利用國家重點實驗室;
【基金】：國家高技術研究發(fā)展計劃(863計劃)資助項目(2015AA050505)
【分類號】：TQ545
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本文編號：2341055