Base on industrial research and experience, the process of methanol distillation is analyzed,and above all, a new concept of high pressure flowsheet and low pressure flowsheet is defined. The new configuration helps t...Base on industrial research and experience, the process of methanol distillation is analyzed,and above all, a new concept of high pressure flowsheet and low pressure flowsheet is defined. The new configuration helps to handle problems encountered in many factories in China. The inter influence between process and column internal pattern is also pointed out. Recommendation of new column internal designs is given. Finally, industrial examples tell the how the new concept works and the possibility of combining process to give more opens to solve engineering problems.展开更多
由于电价政策复杂,执行环节多,监管难度大,电价执行错误现象时有发生,这不仅损害电力市场的公平性和效率,也影响电力企业的经济效益和用户的用电成本。提出了一种基于二次聚类的充电桩执行电价异常检测方法,首先进行电价执行异常分类及...由于电价政策复杂,执行环节多,监管难度大,电价执行错误现象时有发生,这不仅损害电力市场的公平性和效率,也影响电力企业的经济效益和用户的用电成本。提出了一种基于二次聚类的充电桩执行电价异常检测方法,首先进行电价执行异常分类及用电特征分析,其次通过K-means聚类算法剥离出电瓶车用户,进而在第二次聚类中采用含噪声应用的基于密度的空间聚类(density-based spatial clustering of applications with noise,DBSCAN)算法精确识别高价低接等更为复杂的违约情况。所提方法通过两次聚类分析,提高电价执行的准确性和效率,具有一定的理论意义和应用价值。展开更多
文摘Base on industrial research and experience, the process of methanol distillation is analyzed,and above all, a new concept of high pressure flowsheet and low pressure flowsheet is defined. The new configuration helps to handle problems encountered in many factories in China. The inter influence between process and column internal pattern is also pointed out. Recommendation of new column internal designs is given. Finally, industrial examples tell the how the new concept works and the possibility of combining process to give more opens to solve engineering problems.
文摘由于电价政策复杂,执行环节多,监管难度大,电价执行错误现象时有发生,这不仅损害电力市场的公平性和效率,也影响电力企业的经济效益和用户的用电成本。提出了一种基于二次聚类的充电桩执行电价异常检测方法,首先进行电价执行异常分类及用电特征分析,其次通过K-means聚类算法剥离出电瓶车用户,进而在第二次聚类中采用含噪声应用的基于密度的空间聚类(density-based spatial clustering of applications with noise,DBSCAN)算法精确识别高价低接等更为复杂的违约情况。所提方法通过两次聚类分析,提高电价执行的准确性和效率,具有一定的理论意义和应用价值。
