成果報告書詳細
管理番号20110000000800
タイトル*平成22年度中間年報 環境調和型製鉄プロセス技術開発(H20~23)
公開日2011/6/23
報告書年度2010 - 2010
委託先名新日本製鉄株式会社 JFEスチール株式会社 住友金属工業株式会社 株式会社神戸製鋼所 日新製鋼株式会社 新日鉄エンジニアリング株式会社
プロジェクト番号P08021
部署名環境部
和文要約和文要約等以下本編抜粋:1.研究開発の内容及び成果等
【1】鉄鉱石還元への水素活用技術の開発
1)水素活用/ガス循環最適プロセス技術開発(新日本製鐵株式會社)
水素を多量に含有する改質COG(組成はCO 30%、H2 60%)を高炉で利用した場合の、高炉内鉱石還元挙動(炉下部、炉上部)を明らかにするとともに、改質COGの最適な吹込プロセスの提言を行うための研究を行い、平成22年度は以下の結果を得た。
英文要約Development item
"CO2 Ultimate Reduction in Steelmaking Process by Innovative Technology for Cool Earth 50 (COURSE50)"
-Iron ore reduction by hydrogen enriched gases in blast furnace
 Laboratory test of the reduction of iron ore demonstrating injection of reformed-COG from lower level of shaft was conducted. The result of the indirect reduction rate of ore rising by injecting in reformed-COG was obtained from the experiment. And the test results indicate the possibility of reduction of input carbon.
 The increase of reduction degradation by hydrogen was induced with the increase of cracks at the inner portion of sinter.
 By use of the mathematical blast furnace model for gas injection through shaft, the effects of reformed-COG injection conditions, such as temperature, injection position and gas composition, on the operation were estimated qualitatively.
-Development of hydrogen amplification process technology using catalytic reforming of hydrocarbons in crude COG
The process concept and the basic design of bench-scale test plant were confirmed. Two kinds of prototypes of the heat resisting valve were made and showed much higher sealing performance under hot simulated COG.
-Coke production technology development for hydrogen use iron ore reduction
 High strength coke, which DI(15, 150) value was achieved to 88, was obtained by HPC addition. It was cleared that the improvement of dilatation by HPC addition was the most effective function to perform filling the inter particle voids of coals in the coking reaction.
-Development of CO2 capture technologies
 The 30 ton/day chemical absorption evaluating plant was operated. The low energy consumption and the high durability through long term operation were confirmed. Any corrosion problems to steel making process were not detected. Novel chemical absorbents were developed. They consist of amines, which exhibit enhanced CO2 absorption rate without increasing heat of reaction. Development of physical adsorption technologies is also in progress, the bench plant was constructed and was started operation.
-Development of technologies for utilizing exhaust heat
 Studies have been conducted on various promising waste heat recovery technologies as well as an inventory of unused waste heat within a model steel plant. Organic/inorganic chemical heat pump system and heat storage / heat transfer system utilizing phase change material (PCM) were selected as development objects.
 The possibility of heat recovery from steelmaking slag (heat recovery ratio ≧30% ) has been confirmed through laboratory-scale tests, using a roll-forming equipment. The bench plant was constructed.
 It was confirmed that the heat transfer enhancing element increases the efficiency of heat exchanger by more than 30%. Therefore, the cost of Kalina cycle generating system is expected to decrease largely. 
-A holistic model has been established to evaluate the energy balance of an entire steel works. The Experimental Blast Furnace research is being planned.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る