鞍钢技术
鞍鋼技術
안강기술
AISC TECHNIQUES
2015年
1期
13-17
,共5页
张立国%任伟%刘德军%张伟%王再义%邓伟
張立國%任偉%劉德軍%張偉%王再義%鄧偉
장입국%임위%류덕군%장위%왕재의%산위
高炉%半焦%喷吹%优化配煤%燃烧率%喷煤比
高爐%半焦%噴吹%優化配煤%燃燒率%噴煤比
고로%반초%분취%우화배매%연소솔%분매비
BF%semi-coke%injection%optimization of coal blending%combustion ratio%PCI
为探索鞍钢高炉喷吹半焦的可行性,在分析半焦性能基础上,以鞍钢常用煤种作为基础煤种,开展了配入量作为水平的优化配煤实验,并对优化后的混合煤粉的输送性能、燃烧率、理论置换比进行分析。实验结果表明,混合煤粉中配入小于15%的半焦要比现场正在喷吹的混合煤粉的输送性能略微改善,混煤的燃烧率提高约2%,理论置换比都在0.95以上,远高于行业要求标准,半焦作为高炉喷吹用煤完全具有可实施性。
為探索鞍鋼高爐噴吹半焦的可行性,在分析半焦性能基礎上,以鞍鋼常用煤種作為基礎煤種,開展瞭配入量作為水平的優化配煤實驗,併對優化後的混閤煤粉的輸送性能、燃燒率、理論置換比進行分析。實驗結果錶明,混閤煤粉中配入小于15%的半焦要比現場正在噴吹的混閤煤粉的輸送性能略微改善,混煤的燃燒率提高約2%,理論置換比都在0.95以上,遠高于行業要求標準,半焦作為高爐噴吹用煤完全具有可實施性。
위탐색안강고로분취반초적가행성,재분석반초성능기출상,이안강상용매충작위기출매충,개전료배입량작위수평적우화배매실험,병대우화후적혼합매분적수송성능、연소솔、이론치환비진행분석。실험결과표명,혼합매분중배입소우15%적반초요비현장정재분취적혼합매분적수송성능략미개선,혼매적연소솔제고약2%,이론치환비도재0.95이상,원고우행업요구표준,반초작위고로분취용매완전구유가실시성。
In order to explore the feasibility of injecting semi-coke into blast furnace in Ansteel, the experiment for optimization of coal blending by taking the quantity of blending semi-coke into coal as standard indicator was carried out by using common variety of coal in Ansteel as primary coal based on analysis of the properties of semi-coke. After that the transportation property, combustion ratio and theoretical replacement ratio of the optimized blended pulverized coal were also analyzed. The experimental results show that the conveying ability of blended pulverized coal with adding the semi-coke less than 15% improves a little bit comparing with that of pulverized coal injection (PCI) in Ansteel at present, the combustion ratio increases by 2%about and the theoretical replacement ratio is over 0.95, all of which are above desiredvalues specified in industrial standards, indicating that it is completely feasible for semi-coke to use as pulverized coal for injection into blast furnace.