The experimental research on blended coal is conducted in this paper according to coal species with special ash composition and high ash fusing point in coal-water slurry pressured gasification process.
针对水煤浆加压气化过程中灰组成特殊的高灰熔点煤种,进行了配煤实验研究,结果表明,通过配煤可有效降低煤样灰熔点,同时其成浆性能得到改善,对实现水煤浆加压气化原料多样化及煤炭资源的合理利用具有重要的现实意义。
For this,test and analysis have been carried out,the mixed burning method of coals with high and low ash fusing point being adopted,and a series of adjusting measures with clear aim being taken from the aspect of operation.
对此,采用高、低灰熔点煤混烧并从运行方面采取了一系列针对性调整措施,取得了显著的效果。
Employing support vector machine to predict the ash fusion temperature of coal blends;
支持向量机技术在动力配煤中灰熔点预测的应用
Combining general regression neural network and genetic algorithm to optimize ash fusion temperature;
基于广义回归神经网络与遗传算法的煤灰熔点优化
Application of general regression neural network in prediction of coal ash fusion temperature;
广义回归神经网络在煤灰熔点预测中的应用
According to process requirements of Shell coal gasification process,combined with the characteristics of feed coal of Anqing chemical fertilizer plant,limestone at different ratios was blended into the feed coal,and then the ash melting point was determined.
根据Shell粉煤气化工艺要求,结合中石化安庆分公司化肥装置原料煤的特性,在原料煤中加配不同比例的石灰石,然后测定其灰熔点;通过实验得出,当原料煤加配4%～6%石灰石时,原料煤灰熔点符合Shell粉煤气化工艺对气化炉灰熔点的控制要求。
Directly using calcium series chemical compound as sulphur fixing agent in C W M combustion will result in further lowering the ash melting point of C W M and sometime, greatly increasing the viscosity of C W M and therefore, the stability of the C W M becom.
对水煤浆燃烧固硫问题进行了初步探讨 ,指出水煤浆燃烧过程中结渣主要是常用的水煤浆添加剂会导致水煤浆的灰熔点下降所致 ;如果直接以钙系化合物作为水煤浆固硫剂 ,将导致水煤浆的灰熔点进一步下降 ,有时还会大大增加水煤浆的粘度 ,降低水煤浆的稳定性。
The model can predict ash melting point precisely by considering a certain proportion of ash.
建立了动力配煤新的数学模型 ,该模型中的约束条件如水分、灰分、挥发分、硫分、发热量等指标与单煤之间具有良好的线性加权关系 ;对灰熔点的约束条件 ,考虑了单煤灰分产率和配比2个基本参数 ,采用单煤灰分产率加权平均法 ,可克服原模型不能准确预测配煤灰熔点问题 。
Analysed the ash components of 154 coal samples,discussed the influence of the main materials and acid/alkali ratio in the coal ash on ash fusibility in the paper,gained the relationship between acid/alkali ratio and ash fusibility.
通过对154个煤样的灰成分进行分析,探讨了煤灰主要成分及煤灰中酸碱比对灰熔融性的影响,并回归出了酸碱比与灰熔融性的关系式,预测结果与实测值具有较好的一致性。
After the ash fusibility and its chemical composition of 22 Shenfu coal samples have been determined, the relationship between ashfusion temperature and its chemical composition was studied.
以神府煤煤灰化学成分和灰熔融性为研究对象,讨论了煤灰化学成分与熔融性的关系,发现煤灰化学成分中碱性氧化物及SO3含量对煤灰熔融性有较大影响,提出了用熔融指数FI+wFe2O3+wCaO+wMgO+wK2O+wNa2O)来预测煤灰熔融特征温度的回归公式,用FI回归(FI=wSO3公式计算的煤灰熔融特征温度计算值与实测值之差小于国家标准规定的误差值(再现性≤80°C)。
When a high ash fusibility of Huainan coal blends with two low fusibility coals,the ash fusion point of coal blending is reduced.
采用高灰熔融性淮南煤A与2种低灰熔点的煤相配加形成配合煤,其中配以C煤(固定50%)调整B煤或D煤等低灰熔点煤与淮南煤的百分比,进行配煤灰熔点研究。