共查询到19条相似文献,搜索用时 93 毫秒
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以太原煤炭气化(集团)有限责任公司的工业焦炉数据为基础,建立了该公司的焦炭质量预测模型。利用单种煤和配合煤的各种性质指标预测焦炭质量,并指导配煤,以获得稳定的焦炭质量。 相似文献
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根据11种单种煤的性质,在实验室20kg小焦炉上进行了11种单种煤和8种配煤方案的炼焦实验,并对焦炭进行了筛分组成、冷态强度、焦炭热性质等分析,初步建立了焦炭质量预测模型。实验结果表明:单一的煤质指标与焦炭强度的关系不是很明显,选用煤质多因素指标进行焦炭质量预测,其预测效果较好;单一的煤质指标(Vd、R0max、Ad)与焦炭反应性之间有较好的关系,且焦炭的反应性随反应温度的升高而增大。 相似文献
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通过关联配合煤中硫、灰分、挥发分的质量分数等主要的煤质指标,利用基于Adma算法为优化器的GRU神经网络模型,不断对模型参数进行调整后,通过sigmoid激活函数判断模型准确率的多标签多分类方法,建立了焦炭质量预测模型。结果表明:当三层GRU网络的隐层神经元数量为(64,64,64);学习率为0.01;样本批次大小为64;样本训练次数为50;丢弃率为0.3时,得到了模型的最优参数,此时模型预测准确率达到97%。采用GRU神经网络多标签多分类焦炭预测模型不仅具有高精度、低损失函数等特点,而且针对小样本配煤数据预测焦炭质量可以达到很好的效果,对实际的配煤炼焦具有一定的参考意义。 相似文献
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焦炭强度与热性质控制因素分析 总被引:1,自引:0,他引:1
在20kg小焦记上进行了11种单种煤和8种配煤方案的炼焦试验,建立了焦炭质量预测模型。结果表明,单一的煤质指标与焦炭强度的关系不明显,多因素指标进行焦炭质量的预测效果较好;焦炭反应性与单一煤质指标中Vd、^—Rmax^0、Ad之间有较好的关系,且随反应温度的升高而增大。 相似文献
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The coal blend quality and process control of coke making technologies is an important lever to produce quality coke with optimal cost. Apart from impacting cost, this improves the CO2 footprint. This is facilitated by proper selection of coke making technologies and coal/coal blend. Each technology has its own advantage and limitation based on its design criteria. Recently, Tata Steel introduced Asia largest single location 1.6 mtpa of heat recovery coke plant for the first time. This paper briefly described the operational philosophy evolved in heat recovery coke plant to produce desired quality coke at comparatively lower cost through operational excellence. The reduction of imported prime hard coking coal in coal blend up to 30% without affecting coke quality adversly and understanding the operational processes and finally mastering heat recovery coke making technology was also part of this paper. 相似文献
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《Fuel Processing Technology》1998,55(2):129-141
The addition of petroleum coke to a typical industrial coal blend used in the production of metallurgical coke was studied. Cokes were produced at semi-industrial scale at the INCAR coking plant, using petroleum coke of different particle size distribution as an additive. Special attention was paid to changes caused in the textural properties (porosity, pore size distribution, fissures at the interface between metallurgical coke and petroleum coke) which have been found to be responsible for variations in the metallurgical coke quality parameters (e.g., mechanical strength and reactivity towards CO2). Variation in porosity was found to depend on particle size and the proportion of the additive. The decrease in the microporosity (i.e., pore radius<3.7 nm) of the metallurgical cokes observed when petroleum coke is added to the coal blend, is postulated to be one of the main factors responsible for the decrease in the reactivity of these cokes. The variation of the mechanical strength indices can be explained by the changes in porosity and the quality of the interfaces between petroleum coke and metallurgical coke. 相似文献
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捣固炼焦值得关注的几个问题 总被引:3,自引:0,他引:3
叙述了捣同炼焦配煤与焦炭质量的关系及捣固强度与配煤的关联性.指出:焦炭质量的基础是配煤质量,不会因煤准备和炼焦工艺等有根本性的改变;捣固炼焦可多用低变质程度,高挥发分气煤类的炼焦煤生产出一定质量的焦炭;捣同炼焦配煤适当增加黏结性配煤比例可提高焦炭质量,但用接近顶装焦炉的配煤进行捣固炼焦将丧失其优势并引发问题.捣固焦炉的... 相似文献
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对价格较低的高硫气肥煤进行了工业分析、煤质分析、岩相分析和40 kg小焦炉试验,并将其用于配煤炼焦。结果表明,高硫气肥煤部分替代肥煤炼焦是可行的,将其应用到生产实践,焦炭质量得到了保证,同时降低了配合煤成本。 相似文献
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介绍了JN43-80型焦炉由顶装炼焦改为捣固炼焦的改造工程,对比了改造前后炼焦用煤质量指标、配煤煤种和比例、用煤量、焦炭质量指标、化工产品回收率等。顶装炼焦改为捣固炼焦具有减少主焦煤配入量、增加气煤的配入量、提高焦炭产量等优势,通过改造,可使焦化企业降本增效。 相似文献
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An approach to blast furnace coke quality prediction 总被引:3,自引:0,他引:3
Although coke cold drum mechanical strength has historically been the most relevant coke quality parameter, currently coke reactivity and post-reaction strength (CRI/CSR) are the most important parameters used to assess blast-furnace coke quality. Many models of coke quality prediction have been proposed, most of which are based on coal characteristics and limited to the same coal geographic origin, but as yet there is no universally applicable prediction formula. The present work describes a simple model of coke CRI/CSR prediction based on the assumption that the CSR of a coke produced from a blend of coals can be predicted from the CSR obtained from the cokes of the individual coals through the application of the additivity law. The additivity law was also applied to the coke cold mechanical strength indices derived from the Irsid test, which are widely employed by the European coke industry as complementary coke quality indicators. 相似文献
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煤岩分析法已成为辨别煤质特别是确认混煤情况的重要手段,它在某些方面弥补了工业分析在检验煤质上的一些不足。文中依据镜质组反射率具有加和性的特点,利用单种煤反射率分布图合成配合煤反射率分布图指导炼焦配煤,可以使焦炭质量达到最优。 相似文献