Present Situation and Prospect of EAF Gas Waste Heat Utilization Technology

被引：10

作者：

Yang, Ling-zhi ^{[1
]}

Jiang, Tao ^{[1
]}

Li, Guang-hui ^{[1
]}

Guo, Yu-feng ^{[1
]}

Chen, Feng ^{[1
]}

机构：

[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2018年 / 37卷 / 04期

基金：

中国国家自然科学基金;

关键词：

electric arc furnace; high temperature gas; waste heat utilization; carbon monoxide;

D O I：

10.1515/htmp-2016-0218

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

With the increase of hot metal ratio in electric arc furnace (EAF) steelmaking process, physical sensible heat and chemical latent heat of gas increased significantly. As EAF raw material condition is similar to basic oxygen furnace (BOF), and the condition of BOF gas waste heat utilization technology is mature, waste heat utilization technology in EAF steelmaking will be getting more and more attention. Scrap preheating and steam production as mature technology is the main way of EAF gas waste heat utilization. Power generation converted high temperature steam to electricity will further improve the EAF gas utilization value. The previous ways are to recycle physical sensible heat of EAF gas. To use chemical latent heat of gas, the secondary combustion technology is usually adopted to make CO fully burn into CO2. Coal gas production can fully recycle the chemical latent heat of gas theoretically, which is higher efficiency than other ways. Coal gas production needs a stable steelmaking process to stabilize high temperature gas. And the way need to develop EAF sealing technology, oxygen removal technology and gas purification technology, to make gas content meet the requirements of coal gas production in EAF steelmaking process.

引用

页码：357 / 363

页数：7

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