成果報告書詳細
管理番号20150000000243
タイトル*平成26年度中間年報 国際エネルギー消費効率化等技術・システム実証事業 石炭高効率利用システム案件等形成調査事業 褐炭改質技術、石炭灰利用技術、バイオマス利用技術の統合によるインドネシアの石炭低品位化対応ソリューション事業の案件形成調査
公開日2015/10/2
報告書年度2014 - 2014
委託先名北陸電力株式会社 宇部興産株式会社 丸紅株式会社
プロジェクト番号P93050
部署名環境部
和文要約
英文要約Title: International Projects for Increasing the Efficient Use of Energy/ Project Formation Research on High-Efficiency Clean Coal Technology /The investigation to develop the solution business coping with low rank coal produced in Indonesia by optimal integration of technologies of lignite upgrading, and fly-ash and biomass utilization.

Development item 1:
In-depth investigation of plant installation for upgrading low rank coal

Regarding a design of an upgrading plant, we conducted upgrading test with a sample of lignite, and determined an optimum size of a dryer and the number of briquetting machines. We optimized a design of an EFB (Empty Fruit Bunch) plant, estimated its cost, and studied to reduce its cost by consolidating gasifiers and simplifying exhaust heat recovery system. We changed a construction candidate site of the integrated plant from land adjacent to Hasnur’s palm oil refinery to an inside area of Hasnur-owned coal shipping port. We optimized a design of the integrated plant and estimated initial investment in it.

Regarding research on market and policy of upgrading business, we investigated low rank coal mines around the Hasnur mine. By interviewing the Ministry of Energy and Mineral Resources of Indonesia, we investigated the outline of a new formula of low rank coal price and its influence on profitability of the business. We investigated required quality and annual demand of low rank coal, its purchasing procedures and a plan to utilize it in the future of the PLN group. We investigated a mid-term perspective of supply and demand of coal forecasted by PLN and the Ministry, and competing lignite upgrading technologies.

Development item 2:
In-depth investigation of how to introduce the system utilizing untapped natural resources

We developed and manufactured a fly-ash soil conditioner added with fertilizer components, confirmed its safety, and offered it to tests to verify its application effects in Indonesia. We implemented pot cultivation experiments in Indonesia, inspected safety of the fly-ash soil conditioner, and confirmed its neutralization effect could last for several years.

To reduce the initial investment in the plant, we reduced its scale and calculated cost reduction. We investigated availability of infrastructure to transport the fly-ash soil conditioner and costs related to its transportation. We analyzed cost competitiveness of the fly-ash soil conditioner.

We also investigated regulation on use of the fly-ash soil conditioner in Indonesia and its neighboring countries, procedures for product certification by the government of Indonesia which is required to circulate the fly-ash soil conditioner in Indonesia, and procedures for establishing the product safety standard in Indonesia.

Development item 3:
Evaluation of business and clarification of business issues to deal with

After integrating the plants based on three different technologies, we have calculated IRR in two cases which adopt an EFB gasifier and an EFB stoker boiler, and consulted Hasnur about how to evaluate the business and feasible business scheme. We confirmed the application of integrated system to Hasnur is feasible under certain business environments, and reviewed issues to cope with to realize the business and how to address them.
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