文献类型：期刊文献

英文题名：Dense-Feeding of Pulverized Coal into the Entrained-Flow Gasifier

作者：Lu, Haifeng[1];Guo, Xiaolei[1];Jin, Yong[1];Gong, Xin[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：56

期号：34

起止页码：9734

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20173604112378);WOS:【SCI-EXPANDED(收录号:WOS:000409293900029)】；

基金：This work was supported by the National Natural Science Foundation of China (21206041) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Gasification - Particle size - Pneumatics - Feeding - Pneumatic conveyors - Coal - Pulverized fuel - Two phase flow

摘要：Reliable feeding of pulverized coal into the entrained-flow gasifier is of great importance for the gasification process because powder feeding properties can affect the gasification performance index and the final product quality directly. With the background of the industrial demonstration of SE gasification technology, this paper focuses on its dense-feeding system which consists of the hopper discharge unit and the pneumatic conveying unit. First, the flow properties of pulverized coal in terms of angle of repose, compressibility, and Can's flowability index were measured using a PT-X powder flow tester. Second, the operation characteristics of pulverized coal discharged from the hopper were studied, where effects of particle size and hopper pressure were obtained based on analyzing the weight-versus-time curve and the pressure-versus-time curve. Finally, the characteristics of dense-phase pneumatic conveying of pulverized coal were investigated by analyzing the system pressure distribution and the gas solid flow stability.