高校化学工程学报2018，Vol.32Issue(1)：108-116,9.DOI:10.3969/j.issn.1003-9015.2017.00.047
气流床煤气化细灰流动特性研究
Study on Flow Properties of Fine Ash from Entrained-Flow Coal Gasification
摘要
Abstract
Coal ash is a byproduct of coal gasification processes, which shows great reusing potential in construction, adsorption, extraction of alumina and other areas. The flow characteristics of fine ash have a significant effect on reusing processes. However, ashes produced by different gasification technologies have different physical properties. Therefore, research on flow characteristics of fine ash is useful. In this work, fine ashes obtained from coal-water slurry gasification and different pulverized coal gasification were selected as experimental materials. The flow properties of fine ashes produced by different gasification processes were compared in terms of cohesion, difference of internal friction angle between steady-state (φst) and initial flow (φi) and specific energy (SE). In addition, effects of fine particle mean size and fine particle content on the flow properties were obtained. The results show that compared to the fine ash from coal-water slurry gasification, the cohesion of pulverized coal gasification fine ash is stronger with worse flowability. The fine ash from pulverized coal gasification experienced quench process has weaker flowability than that experienced waste heat boiler process.关键词
煤气化/细灰/流动性/细颗粒含量Key words
coal gasification/fine ash/flow properties/content of fine particle分类
化学化工引用本文复制引用
郑忆南,陆海峰,郭晓镭,龚欣..气流床煤气化细灰流动特性研究[J].高校化学工程学报,2018,32(1):108-116,9.基金项目
中央高校基本科研业务费专项资金(222201514338) （222201514338）
上海市科委科研计划项目(15DZ1200802) （15DZ1200802）
山西省煤基重点科技攻关项目(MH2014-01). （MH2014-01）
