摘要
本文根据“双碳”背景下发展循环经济的客观需求,针对目前工业固废处置能力差的问题,提出了开展工业窑炉协同处置固废的技术路线。利用流体仿真软件和双欧拉模型,重点研究在典型高温工业窑炉——炼铁高炉中协同处置冶金尘泥这种含铁固废的冷态气固两相流动场。建立了从固废颗粒入炉到充分流动的全过程冷态流动模拟,分别得到了气相侧和颗粒侧的速度分布及组分分布。结果表明:在采用20%固废原料掺混比的条件下,高炉冷态流动场在120 s全过程流动中在80 s内达到流动稳定,固废颗粒与铁矿石颗粒在流动场上具有高度一致性,验证了高炉协同处置冶金尘泥固废在冷态流场特性方面的合理性和可行性,对指导固废资源化以及高炉仿真模拟研究具有指导意义。
In response to the objective demand for the development of circular economy in the context of"Carbon peaking and carbon neutrality"strategy,and in view of incapability of dealing with industrial solid wastes,this paper proposes a technical route for carrying out collaborative disposal of solid wastes in industri⁃al kilns.This paper uses the fluid simulation software and dual Euler model to focus on the study on syner⁃gized treatment of metallurgical dust and mud in a typical high-temperature industrial kiln-ironmaking blast furnace as this type of metallurgical dust and mud contains iron and solid wastes in the cold gas-solid two-phase flow field.The cold flow simulation of the whole process from solid waste particles entering the furnace to full flow was established to obtain the velocity distribution and component distribution on the gas side and particle side.The results show that at 20%solid waste raw blending ratio,the cold flow field of the blast furnace reaches flow stability within 80 seconds across the entire process of 120 seconds.The solid waste particles and iron ore particles have high consistency in the flow field,concluding that it is workable in terms of the cold flow field characteristics of the collaborative treatment of metallurgical dust and solid waste in the blast furnace.This has guiding significance for guiding the resource utilization of solid wastes and the simulation research of the blast furnace.
作者
潘却易
王晓佳
沈德魁
梁导伦
向郁雪
赵学亮
PAN Queyi;WANG Xiaojia;SHEN Dekui;LIANG Daolun;XIANG Yuxue;ZHAO Xueliang(School of Energy and Environment,Southeast University,Nanjing,Jiangsu 210096;School of Civil Engineering,Southeast University,Nanjing,Jiangsu 210096)
出处
《能源科技》
2023年第2期88-92,共5页
Energy Science and Technology
基金
国家重点研发计划项目(2020YFC1910000)。
关键词
数值模拟
气固两相流
协同处置固废
冶金尘泥
双欧拉模型
numerical simulation
gas-solid two-phase flow
synergized treatment of solid wastes
metallurgi⁃cal dust and mud
dual Euler model
