检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:金珂[1] 冯妍卉[1] 张欣欣[1] 林蔚[1] 张长青 杨俊峰 马小波
机构地区:[1]北京科技大学机械工程学院,北京100083 [2]中冶焦耐工程技术有限公司,辽宁鞍山114001
出 处:《化工学报》2012年第3期788-795,共8页CIESC Journal
基 金:国家高技术研究发展计划重点项目(2009AA063301)~~
摘 要:基于焦炉炼焦的流动、燃烧和传热过程,以质量守恒、能量守恒和动量守恒定律为基础,建立了焦炉燃烧室-炭化室耦合的三维非稳态数理模型,开展了数值模拟,将焦饼中心温度计算值与测量值进行了对比,进一步比较了3种不同水分蒸发模型的计算结果,分析了装炉煤水分含量、初始温度以及堆密度等工艺参数和操作参数对结焦时间的影响。研究结果表明,所建立的燃烧室-炭化室耦合模型能够较好地模拟焦饼的加热过程,并反映焦饼加热的高向均匀性,同时采用煤预热技术、煤调湿技术、煤料密实工艺可以很好地提高生产效率,为焦炉生产实际提供理论指导依据。To describe fluid flow,combustion and heat transfer in coke oven,a three-dimensional transient mathematical model with coupled coking and combustion chambers was developed and solved numerically.The calculated central temperature of the coke was compared with measured data.Three different evaporation models were compared.Effects of operational factors such as temperature,moisture content and density of charging coal were investigated.It is shown that the proposed model is suitable for describing thermal processes in the coke oven.It reveals whether the temperature distribution is uniform along the height of the chambers with coking evolution. Some measures may be used to improve the production efficiency,such as preheat,adjustment of moisture content,and densification for charging coal.This work is theoretically valuable for the operation of coke oven.
分 类 号:TK16[动力工程及工程热物理—热能工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.119.122.86