Effect of ambient temperature on the jet characteristics of a swirl oxygen lance with mixed injection of CO2 + O2

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

High Temperature Materials and Processes Pub Date : 2022-01-01 DOI:10.1515/htmp-2022-0239

Chao Feng, K. Dong, R. Zhu, Tao Lin, Jianfeng Dong, Tao Xia, Xin Ren

{"title":"Effect of ambient temperature on the jet characteristics of a swirl oxygen lance with mixed injection of CO2 + O2","authors":"Chao Feng, K. Dong, R. Zhu, Tao Lin, Jianfeng Dong, Tao Xia, Xin Ren","doi":"10.1515/htmp-2022-0239","DOIUrl":null,"url":null,"abstract":"Abstract O2 mixed with CO2 gas has been successfully applied in converter smelting; however, up to now, there have been few studies regarding the jet characteristics of the mixed injection of the swirl oxygen lance nozzle and the influence of different ambient temperature conditions on jet characteristics compared with common nozzles. In this study, Fluent software was used to simulate the jet characteristics of a four-hole common nozzle and a four-hole swirl nozzle under four different ambient temperature conditions to inject 95% O2 + 5% CO2 and analyze the influence of different ambient temperatures on nozzle-jet characteristics. The results show that with an increase in the ambient temperature, the jet-axis velocity and nozzle centerline speed increase. Under the same distance condition, the distance between the maximum radial velocity point of the jet and the centerline of the nozzle becomes larger, with a velocity greater than that of the swirl nozzle. However, the influence of the ambient temperature on the offset of the jet centerline is small. With an increase in the ambient temperature and distance, the jet-axis temperature increases and the temperature of the nozzle centerline decreases. The research results can provide a theoretical reference for the optimal design of a CO2 + O2 swirl oxygen lance nozzle.","PeriodicalId":12966,"journal":{"name":"High Temperature Materials and Processes","volume":"41 1","pages":"635 - 649"},"PeriodicalIF":1.6000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"High Temperature Materials and Processes","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1515/htmp-2022-0239","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Abstract O2 mixed with CO2 gas has been successfully applied in converter smelting; however, up to now, there have been few studies regarding the jet characteristics of the mixed injection of the swirl oxygen lance nozzle and the influence of different ambient temperature conditions on jet characteristics compared with common nozzles. In this study, Fluent software was used to simulate the jet characteristics of a four-hole common nozzle and a four-hole swirl nozzle under four different ambient temperature conditions to inject 95% O2 + 5% CO2 and analyze the influence of different ambient temperatures on nozzle-jet characteristics. The results show that with an increase in the ambient temperature, the jet-axis velocity and nozzle centerline speed increase. Under the same distance condition, the distance between the maximum radial velocity point of the jet and the centerline of the nozzle becomes larger, with a velocity greater than that of the swirl nozzle. However, the influence of the ambient temperature on the offset of the jet centerline is small. With an increase in the ambient temperature and distance, the jet-axis temperature increases and the temperature of the nozzle centerline decreases. The research results can provide a theoretical reference for the optimal design of a CO2 + O2 swirl oxygen lance nozzle.

查看原文本刊更多论文

环境温度对混合注入CO2 + O2的旋流氧枪射流特性的影响

摘要O2与CO2混合气体已成功应用于转炉冶炼;然而，到目前为止，与普通喷嘴相比，关于涡流氧枪喷嘴混合喷射的射流特性以及不同环境温度条件对射流特性的影响的研究还很少。本研究利用Fluent软件模拟了四孔普通喷嘴和四孔旋流喷嘴在四种不同环境温度条件下注入95% O2 + 5% CO2的射流特性，分析了不同环境温度对喷嘴射流特性的影响。结果表明:随着环境温度的升高，射流轴向速度和喷嘴中心线速度增大;在相同距离条件下，射流最大径向速度点与喷嘴中心线之间的距离变大，速度大于旋流喷嘴。而环境温度对射流中心线偏移量的影响较小。随着环境温度和距离的增加，射流轴温度升高，喷嘴中心线温度降低。研究结果可为CO2 + O2旋流氧枪喷管的优化设计提供理论参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

High Temperature Materials and Processes 工程技术-材料科学：综合

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

3.9 months

期刊介绍： High Temperature Materials and Processes offers an international publication forum for new ideas, insights and results related to high-temperature materials and processes in science and technology. The journal publishes original research papers and short communications addressing topics at the forefront of high-temperature materials research including processing of various materials at high temperatures. Occasionally, reviews of a specific topic are included. The journal also publishes special issues featuring ongoing research programs as well as symposia of high-temperature materials and processes, and other related research activities. Emphasis is placed on the multi-disciplinary nature of high-temperature materials and processes for various materials in a variety of states. Such a nature of the journal will help readers who wish to become acquainted with related subjects by obtaining information of various aspects of high-temperature materials research. The increasing spread of information on these subjects will also help to shed light on relevant topics of high-temperature materials and processes outside of readers’ own core specialties.