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首页> 外文期刊>Fuel >Slagging and fouling characteristics of seam 32/33, Panian coalfield, Semirara Island, Philippines
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Slagging and fouling characteristics of seam 32/33, Panian coalfield, Semirara Island, Philippines

机译：菲律宾塞米拉拉岛Panian煤田32/33煤层的结渣和结垢特性

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摘要

Twenty samples of seam 32/33, the main seam of Panian coalfield in Semirara Island, Antique Province, Philippines, were collected from a borehole drilled at the northeastern edge of the coalfield. The samples were analyzed to characterize the coal geochemistry of the seam and understand why the coals of Semirara Island exhibit a high tendency for slagging and fouling despite its low average ash content. Analysis of the slagging and fouling characteristics of this seam is important because it supplies five electric power utilities and several cement plants in the Philippines. Proximate analyses and vitrinite reflectance measurements designate the rank of the seam as sub-bituminous C, based on ASTM coal classification. H/C versus O/C ratios indicate that the seam is made up largely of huminite, denoting early stages of coalification. Chemical analysis of the ash reveals high contents of Na, Mg, Fe, Ca, Ba and Sr. The strongly negative correlation of these elements with the ash content indicates an organic affinity of the chemical elements of the seam. Owing to enrichment in alkali and alkali-earth elements, slagging and fouling indices indicate that the seam has medium to high propensity for slagging and a severe tendency for fouling. The detrimental characteristics of coal feedstock from Panian mine is mitigated by modifications to the boiler design and operational conditions and by blending with coals imported from Indonesia, China and Australia.
机译：从位于煤田东北边缘的一个钻孔中收集了二十个煤层样本32/33，这是菲律宾古董省塞米拉拉岛的Panian煤田的主要煤层。对样品进行了分析以表征煤层的煤地球化学特征，并了解为何塞米拉拉岛的煤尽管平均灰分含量低，却仍显示出高的结渣和结垢趋势。分析该煤层的结渣和结垢特性非常重要，因为它可以为菲律宾的五家电力公司和几家水泥厂供电。根据ASTM煤的分类，近距离分析和镜质反射率测量将煤层的等级指定为亚烟煤C。 H / C与O / C之比表明，煤层主要由腐殖质组成，表示煤化的早期阶段。灰分的化学分析表明，Na，Mg，Fe，Ca，Ba和Sr含量较高，这些元素与灰分的含量呈极显着负相关，表明接缝中的化学元素具有有机亲和力。由于碱和碱土元素的富集，结渣和结垢指数表明该接缝具有中等至高的结渣倾向，并且结垢的趋势很严重。通过修改锅炉设计和运行条件，以及与从印度尼西亚，中国和澳大利亚进口的煤炭混合，可以缓解Panian煤矿煤炭原料的有害特性。

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