HPU褐煤气流干燥的数值模拟研究  

Numerical Simulation of Airflow Drying of HPU Lignite

作　　者：邰世康 刘舒予 李晓楠 宋岳 李阳 王顺洁 曾杨 TAI Shi-kang;LIU Shu-yu;LI Xiao-nan;SONG Yue;LI Yang;WANG Shun-jie;ZENG Yang(China Shenhua International Engineering Co.,Ltd.,Beijing 100007,China;School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Sinochem Corporation,Beijing 100031,China;Beijing Jingxin Jiaye Construction Consulting Co.,Ltd.,Beijing 100071,China)

机构地区：[1]中国神华国际工程有限公司,北京100007 [2]中国矿业大学(北京)化学与环境工程学院,北京100083 [3]中国中化股份有限公司,北京100031 [4]北京精信嘉业建筑咨询有限公司,北京100071

出　　处：《化工管理》2022年第1期149-154,共6页Chemical Engineering Management

摘　　要：依托褐煤热压提质(HPU)中试线,基于计算机数值模拟构建褐煤气流干燥三维模型,研究了气流干燥管内气固两相流的运动特性,分析了褐煤颗粒在干燥管中的热交换过程,总结了气流干燥系统的运行规律,得到了各时间点下气固两相流的温度场、压力场、速度场分布以及褐煤颗粒的运动轨迹。通过改变操作参数,优化了气流干燥系统的管道设计,得到了以不同颗粒质量流量、入口烟气温度为起始条件下褐煤颗粒的最终干燥水分,为HPU技术的进一步开发提供了理论依据,也对工业生产具有一定的指导意义。Relying on the lignite hot-pressure upgrading(HPU)pilot test line,a three-dimensional model of brown gas flow drying was constructed based on computer numerical simulation,the movement characteristics of the gas-solid two-phase flow in the air drying tube were studied,and the heat exchange process of the lignite particles in the drying tube was analyzed.Summarizes the operation law of the air drying system,and obtains the temperature field,pressure field,velocity field distribution of the gas-solid two-phase flow at each time point and the movement trajectory of the lignite particles.By changing the operating parameters,the piping design of the airflow drying system was optimized,and the final drying moisture of the lignite particles under the initial conditions of different particle mass flow and inlet flue gas temperature was obtained.Provides a theoretical basis for the further development of HPU technology,and also has a certain guiding significance for industrial production.

关 键 词：褐煤干燥 数值模拟 气固两相流 

分 类 号：TQ52[化学工程—煤化学工程]