气相质谱法研究CO2-O2钢液脱碳反应

doi:10.16085/j.issn.1000-6613.2018-1269

化工进展 ›› 2018, Vol. 37 ›› Issue (12): 4572-4578.DOI: 10.16085/j.issn.1000-6613.2018-1269

气相质谱法研究CO₂-O₂钢液脱碳反应

严红燕¹, 胡晓军², 罗超³, 李晨晓¹, 朱荣⁴, 周国治²

1 华北理工大学冶金与能源学院, 河北唐山 063210;
2 北京科技大学钢铁冶金新技术国家重点实验室, 北京 100083;
3 河钢集团唐钢公司一钢轧厂, 河北唐山 063000;
4 北京科技大学冶金与生态工程学院, 北京 100083

收稿日期:2018-06-20 修回日期:2018-09-07 出版日期:2018-12-05 发布日期:2018-12-05
通讯作者: 胡晓军,教授,博士生导师,从事冶金物理化学方向研究。
作者简介:严红燕(1986-),讲师,从事高温化学反应机理方向研究。E-mail:xiaoniji@126.com。
基金资助:
国家自然科学基金（51804126，51474019，51334001）、河北省自然科学基金（E2018209266）及唐山市科技计划（17110208a）项目。

Decarburization of CO₂-O₂ in liquid steel by gas-phase mass spectrometry

YAN Hongyan¹, HU Xiaojun², LUO Chao³, LI Chenxiao¹, ZHU Rong⁴, ZHOU Guozhi²

1 College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China;
2 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
3 First Steel Rolling Mill of Hesteel Group Tangsteel Company, Tangshan 063000, Hebei, China;
4 Metallurgical and Ecological Eengineering School, University of Science and Technology Beijing, Beijing 100083, China

Received:2018-06-20 Revised:2018-09-07 Online:2018-12-05 Published:2018-12-05

摘要/Abstract

摘要： 采用气相质谱法研究了CO₂-O₂在Fe-C体系中的脱碳反应，将气相质谱仪用于气-液体系反应动力学研究，且研究体系具有重要的科研、经济价值。通过质谱分析脱碳反应，考察了气体取样口位置、CO₂喷吹浓度、喷吹高度、气体流速、原始配碳量及反应温度对脱碳反应的影响。结果表明：气体取样口位置为1cm、气体喷吹高度为3cm、气体流速为150mL/min时为最佳气体喷吹条件。原始配碳量在4.0%~1.0%范围CO、CO₂气体呈现3个阶段式变化，1.0%~0.4%呈现两个阶段式变化；在第一阶段中O₂与碳发生反应生成CO₂、CO的同时，CO₂与碳也发生反应生成CO，确定原始配碳量为3.0%是最佳值。且反应温度越高越有利于脱碳反应的进行，达到1873K以后反应温度对脱碳反应的影响较小，确定1873K为最佳实验温度。质谱法测定的终点碳含量理论值与测量值基本一致，说明气相质谱法研究CO₂-O₂脱碳反应的实验数据是可靠的，可用于研究气-液体系反应动力学。

关键词: 气相质谱, 二氧化碳-氧气, 脱碳反应, 钢液

Abstract: In this paper, the decarburization between CO₂-O₂ and Fe-C liquid system was studied by gas-phase mass spectrometry. The gas-phase mass spectrometry was used to study the kinetics of gas-liquid system. The studied system had important scientific value and economic value. The effect of gas sampling port location, CO₂ injection concentration, injection height, gas flow rate, original carbon allocation and reaction temperature on decarburization was studied. The results showed that the optimal gas injection conditions were 1cm of gas injection port position, 3cm of gas injection height and 150mL/min of gas flow rate. There were three stages evolution of CO and CO₂ in the range of 4.0% to 1.0% of original carbon allocation, while two stages evolution in the range of 1.0% to 0.4%. In the first stage, O₂ reacts with carbon to form CO₂ and CO. At the same time, CO₂ reacts with carbon to form CO. The optimal experimental original carbon concentration was 3.0%. Temperature was favorable to the decarburization. While the temperature reached at 1873K, the temperature has less effect on decarburization. It determined that 1873K was the optimal experimental temperature. The theoretical carbon value of the end point of mass spectrometry was basically consistent with the measured value. It indicated that the experimental data of CO₂-O₂ decarburization by gas-phase mass spectrometry was reliable and could be used to study the reaction kinetics in gas-liquid system.

Key words: gas-phase mass spectrometry, CO₂-O₂, decarburization, liquid steel

中图分类号:

O643.14

严红燕, 胡晓军, 罗超, 李晨晓, 朱荣, 周国治. 气相质谱法研究CO₂-O₂钢液脱碳反应[J]. 化工进展, 2018, 37(12): 4572-4578.

YAN Hongyan, HU Xiaojun, LUO Chao, LI Chenxiao, ZHU Rong, ZHOU Guozhi. Decarburization of CO₂-O₂ in liquid steel by gas-phase mass spectrometry[J]. Chemical Industry and Engineering Progress, 2018, 37(12): 4572-4578.

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气相质谱法研究CO₂-O₂钢液脱碳反应

Decarburization of CO₂-O₂ in liquid steel by gas-phase mass spectrometry

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