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| (1)The global environment technology |
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CO2 Recovery and Sequestration Technology Development
CO2 geological and marine storage (sequestration) are useful means as the greenhouse gas (GHG) reduction measure and have been studied widely, using the Aquifer Sequestration Method, the Enhanced Oil Recovery method (EOR) and the Enhanced Coal Bed Methane Recovery method (ECBMR).
Japan CO2 Sequestration in Coal Seams Project (JCOP) representing Japan’s first CO2-ECBMR field trial has been designed to evaluate technical and economical feasibility of extracting methane gas while storing CO2 in Japanese coal seams. The project has been fully supported by Ministry of Economy, Trade and Industry (METI) of Japan. The main objective of the project is to reduce GHG emissions by subsurface injection of CO2 into deep coal beds. At the same time, the project is expected to indicate that injection of CO2 into coal beds will enhance the coal bed methane recovery. JCOAL (Japan Coal Energy Center) is performing a micro-pilot and multi-wells tests at the field near the town of Yubari in the Ishikari Coal Basin of Hokkaido from 2002fy. |
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| (2)Flue Gas Processing and Gas Cleaning Technology |
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Dry-type Desulfurization & Denitrification process
By passing exhaust gas through the filling layer of activated coke, which has formed and activated the coal, the sulfur oxide is removed by absorption.
Also, by adding ammonia into the exhaust gases, by the function of the activated cokes, nitrogen oxides are reduced into nitrogen and water and removed. Thus desulfuration and denitration is efficiently achieved at the same time at the well head.
In other words, the activated coke has two roles; as an absorbing agents and a highly activated denitration catalyst. The sulfur oxides that have been absorbed into the activated coke are reproduced by indirect heating and collected as a by-product in the form of dark sulfuric acid or highly pure sulfur. |
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| (3)The effective utilization technology of the coal ash |
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The Japan Coal Energy Center (JCOAL) has been engaged in various activities to promote the use of coal, including work overseas and public relations, as well as research and development into coal utilization technology. As one of its main activities, JCOAL has been developing technologies for effectively using coal ash.
JCOAL has been conducting a nation-wide survey in Japan on coal ash usage by enterprises in general industries, with the aim of developing and expanding technologies for its effectively use, as its production is expected to increase in the future. This questionnaire survey has been carried out with the support of the Coal Section in the Natural Resources and Fuel Department of the Agency for Natural Resources and Energy at the Ministry of Economy, Trade and Industry, and with the assistance of various companies. The figures for electric power utilities were provided by the Federation of Electric Power Companies of Japan and the Japan Fly Ash Association. This document presents the results of the survey and figures for general industries. |
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