成果報告書詳細
管理番号20110000000712
タイトル*平成22年度中間年報 戦略的石炭ガス化・燃焼技術開発(STEP CCT)次世代高効率石炭ガス化技術開発 発電プラントに係る概略仕様の検討(H22~23)
公開日2011/6/23
報告書年度2010 - 2010
委託先名三菱重工業株式会社
プロジェクト番号P07021
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 1.1 目的 現在、石炭を利用した高効率の発電技術として、石炭ガス化複合発電方式(Integrated Gasification Combined Cycle)の開発が進められている。更なる高効率を目指した石炭ガス化による発電方式として、ガス化温度の低温化とガスタービン排熱の再生利用を柱とする次世代の高効率石炭ガス化技術であるA-IGCC(Advanced IGCC)の概念が提唱されている。
英文要約Title:Strategic Technical Platform for Clean Coal Technology Development of Advanced-Integrated Gasification Technology A Study of General Specification for Power Plant
A-IGCC (Advanced Integrated Gasification Combined Cycle) system has been proposed as a next generation's highly effective coal gasification technology which is combined with the low-temperature gasifier and the recycle of waste heat from gas turbine.
The aim of this study is to conduct estimation of heat and material balance of the A-IGCC system, study of the general specification and the feasibility of the system and equipments, and proposal of the technology development road map.
1. Heat and Material Balance
This system is adopted a 1,500oC class gas turbine which is on commercial use by the natural gas firing combined cycle. And the desulphurization system and heat recovery system are considered. The general analysis program, “Energy Win” developed by Central Research Institute of Electric Power Industry (CRIEPI) was used for this calculation. From the comparison of the oxidant, oxygen is selected for the oxidizer instead of air for higher efficiency.Additional heat balance examinations were executed to study the effect of the high temperature GGH (Gas-Gas Heat exchanger), the desulphurization and the oxygen addition for tar decomposition. However, the base case showed the highest net plant efficiency.
2. General Specification of the plant
General specification of the plant was studied from the results of technical reports of the “STEP-CCT” project form 2007 to 2009.
3. Technology Development Road Map
A-IGCC technology development road map was proposed to clarify the difficulty of development for practical use. Following items are identified to be studied for the system development;
- Total system integration: Low temperature fluidized bed gasifier, hot gas clean up system
- Material and system development: High temperature GGH system, high temperature (700oC class) steam pipe system, and heat recovery system form waste heat from gas turbine.
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