タイトルFeasibility Studies with the Aim of Developing a Bilateral Offset Credit Mechanism FY2011 Studies for Project Development and Organization Energy Saving Technologies and their Feasibility in JSW Steel Ltd., India
報告書年度2011 - 2011
委託先名JFEスチール株式会社 JFEテクノリサーチ株式会社
和文要約件名:平成23年度成果報告書 地球温暖化対策技術普及等推進事業 「インドJSWスチール社製鉄所における省エネルギー・プロジェクトの案件組成調査」
高炉と天然ガス法直接還元が共存するドルヴィ製鉄所(同300万トン、マハラシュトラ州)では次のような改善項目が発見された。1)日本の製鉄所に比べエネルギー原単位が比較的高く改善の余地がある、2)各種省エネルギー機器の設計能力がフルに発揮されていない、3 )段階的に拡張が進んだため製鉄所全体の最適化を目指したエネルギー管理の確立が今後の課題。1)高炉ガス需給調整の改善、2)焼結排熱回収、3)大型モーターのインバーター化などの省エネルギー技術を導入することで、年間約4.2PJ(同37万トン)の省エネルギーが可能であると試算された。
英文要約Steel production in India recorded almost 70MT in 2009, the forth in the world, and has been predicted to reach 200 to 300 MT in 2030. Large steel producers who had already established integrated production process before Liberalization started in early 90s, namely SAIL, RINL and TATA Steel, and those who established integrated process after Liberalization, namely JSW Steel, ESSAR and Bhushan, are very positive to expand their production capacity to meet growing domestic steel demand.
JFE Steel and JFE Techno-Research entrusted by NEDO to estimate energy saving and CO2 emission reduction potential, identify appropriate technologies and implement basic engineering activity in two integrated steel mills operated by JSW group in India.
In the Vijayanagar works (10MTPA, Karnataka state), basic engineering activities for Sinter Cooler Waste Heat Recovery Technology (SWHR) and OG Boilers for Converters were implemented. SWHR for the No1 Sinter plant can generate 7.8MW (equivalent to 55kt-CO2/year). OG boilers can generate 36t-steam/h (58kt-CO2/year) in SMS (Steel Melting Shop) 1 and 51t-steam/h (83kt-CO2/year) in SMS2. It seems necessary to realize the projects that plants cost should be reduced dramatically through higher local procurement, introduction of severer energy saving target by the Government of India and appropriate supports by the Government of Japan through new BOCM and other measures.
In the Dolvi works (3MTPA, Maharashtra State), the team found the following challenges to improve energy efficiency. 1) Relatively higher energy intensity compared to those in Japan, 2) Existing energy saving facilities are not fully performing designed ability, 3) Need extensive improvement in Total Energy Management and Control as step-by-step capacity expansion of the works created individuality of plants. Some technologies such as 1) improvement of blast furnace gas (BFG) utilization, 2) waste heat recovery at the Sinter, 3) power saving by introduction inverter control, were identified to save 4.2PJ/year (370kt-CO2/year).
Smooth transfer and dissemination of appropriate energy saving technologies should be prioritized when project's eligibility is judged in steel sector of the BOCM, not by economic additionality. The both governments should develop “positive technology lists” which is expected transfer and disseminate energy saving technology based on experts' discussion. The following issues should be considered as well. 1) Set baseline as current facilities and operation; 2) Categorize technologies and develop common methodologies for each category; 3) Utilize existing energy management system in integrated steel mills. It would be also necessary to combine some sub-projects as a packaged energy saving project in an integrated steel mill to minimize burden of validation and verification procedures for each small sub-project. This methodology can be called "PERM: Packaged Emission Reduction Methodology".
It is expected that the GOJ would share its proven policy measures and best practices to improve energy efficiency and provide appropriate joint efforts to strength human resource development which enable to train personnel who could plan and promote such measures.