成果報告書詳細
管理番号20140000000415
タイトル*平成25年度中間報告 環境調和型製鉄プロセス技術開発(STEP2)
公開日2015/3/31
報告書年度2013 - 2015
委託先名新日鐵住金株式会社 JFEスチール株式会社 日新製鋼株式会社 株式会社神戸製鋼所 新日鉄住金エンジニアリング株式会社
プロジェクト番号P13012
部署名環境部
和文要約
英文要約Title:CO2 Ultimate Reduction in Steelmaking Process by Innovative Technology for Cool Earth 50 (COURSE50) (FY2013-FY2015)FY2013 Annual Report

-To decrease carbon consumption of blast furnace, laboratory tests and mathematical model simulation demonstrating the process with injection of raw or reformed COG together with recycle use of exhaust gas have been conducted. Results of tests showed that shaft injection decreased direct reduction of blast furnace. Mathematical model for process estimation of experimental blast furnace with proposed blast conditions, CFD model for estimation of of tuyere injection of reduction gases and macro-scale balancing model involving sub-facilities, have been developed. - Hydrogen production from hydrocarbons in crude coke oven gas with a catalytic reforming process was demonstrated using a bench scale plant. The catalyst worked semi-continuously with regeneration processes. Running cost of the hydrogen produced is comparable to those of other conventional ones. - A reaction model has been developed to evaluate coke reaction behavior in a blast furnace employing hydrogen reduction. In coke making tests, coke reactivity has been controlled by changing coal blend, while coke strength has been kept high owing to high-performance caking additive (HPC). - Development of novel chemical absorbents are in progress including catalysts to facilitate CO2 capture, biphasic absorbents, and CO2 binding organic liquids. A new adsorption tower, that adsorption layer was 1.5m, was installed in a bench plant “ASCOA-3”, and the basic feature was investigated. - Development of technologies for utilizing various exhaust heat in the steel works. Efficient heat exchangers and heat collecting system designs for low temperature exhaust gas are studied. Also slag heat recovery pilot-scale tests have been carried out by the bench plant consisting of a slag continuous solidification plant and a slag heat recovery plant. - The design: The estimable experimental blast furnace was designed as planned in respect of blast furnace process operation which minimized the carbon consumption by the effect of the hydrogen reduction was maximized by using mathematical model developed in STEP1.-The construction: It is the commencement of work schedule in as planned Sep.2014, based on the design philosophy of the superscription.-The technology: Verification and the preparation which establishes the integrated process evaluation technology of the test operation result are advanced, and it is the start schedule from 2015FY. - The model was updated so that evaluation at the time of compound gas blowing in which includes blast furnace gas circulation and energy balance model of the whole iron mill. About advanced features of the hydrogen reduction blast furnace, 12 themes of "new technical creation researches" started.
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