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Differences in ignition and combustion characteristics of waste-derived oil-water emulsions and coal-water slurries containing petrochemicals
Fuel Processing Technology ( IF 7.5 ) Pub Date : 2018-10-01 , DOI: 10.1016/j.fuproc.2018.07.033
G.V. Kuznetsov , K.Yu. Vershinina , T.R. Valiullin , P.A. Strizhak

Abstract The creation of general-purpose combustion chambers and drafting of regulations (unified technologies) which would secure efficient combustion of complex fuel compositions necessitates reliable experimental data concerning the main ignition and combustion characteristics of high-potential oil-water emulsions, coal-water slurries and coal-water slurries containing petrochemicals. In the conducted experiments, we varied the main factors of heating, ignition and combustion processes: properties and concentrations of solid and liquid fuels, the temperature in the model combustion chamber, and initial sizes of fuel droplets. It was established that ignition delay times of oil-water emulsions and coal-water slurries containing petrochemicals based on typical industrial waste can differ 3–4 times. The combustion heat of typical waste industrial oil (collected from power plants after use) makes up 50–90% of the total combustion heat of oil-water emulsions and coal-water slurries containing petrochemicals. The main anthropogenic emission concentrations (sulfur and nitrogen oxides) are 5–6 times higher from burning oil-water emulsions than from burning coal-water slurries containing petrochemicals. We have defined thermal conditions providing close values of the main combustion parameters for oil-water emulsions and fuel slurries. Using two approaches, we have calculated relative efficiency indicators (criteria) of burning high-potential oil-water emulsions, coal-water slurries, and coal-water slurries containing petrochemicals versus coal. These criteria take into account environmental, economic and energy performance. Environmental and energy performance indicators of coal-water slurries containing petrochemicals are 35–90 times higher than those of oil-water emulsions, and 6–16 times higher than those of coal dust fuel.

中文翻译:

含石化产品的废油水乳状液与煤水浆的着火燃烧特性差异

摘要 通用燃烧室的创建和法规(统一技术)的起草确保复杂燃料成分的有效燃烧需要有关高电位油水乳液、水煤浆的主要点火和燃烧特性的可靠实验数据。和含有石化产品的水煤浆。在进行的实验中,我们改变了加热、点火和燃烧过程的主要因素:固体和液体燃料的特性和浓度、模型燃烧室的温度以及燃料液滴的初始尺寸。已经确定,基于典型工业废物的油水乳液和含有石化产品的煤水浆的点火延迟时间可以相差 3-4 倍。典型的废工业油(使用后从电厂收集)的燃烧热占油水乳状液和含有石化产品的煤水浆总燃烧热的 50-90%。燃烧油水乳液的主要人为排放浓度(硫和氮氧化物)比燃烧含有石化产品的煤水泥浆高 5-6 倍。我们已经定义了热条件,为油水乳液和燃料浆提供了主要燃烧参数的接近值。我们使用两种方法计算了燃烧高电位油水乳液、煤水浆和含有石化产品的煤水浆与煤的相对效率指标(标准)。这些标准考虑了环境、经济和能源绩效。
更新日期:2018-10-01
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