By New Energy and Industrial Technology Development Organization (NEDO)
The hot power and commercial know-how improvement association (NEDO) and the Japan Coal strength heart (JCOAL) have together ready this advisor as a overview of the historical past of "Clean Coal expertise (CCT)" in Japan, to systematically describe the current kingdom of CCT insofar as attainable, and to supply important fabric for novel technological innovation.NEDO and JCOAL wish this brochure might be important in elucidating why Japan's CCT is an enticing know-how within the ever-increasing complexity of coal usage due to worldwide warming and different environmental concerns. NEDO and JCOAL additionally desire this brochure will motivate swift growth in CCT improvement and the root of leading edge fresh coal usage platforms.
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Additional info for Clean Coal Technologies in Japan. Technological Innovation in the Coal Industry
2. Features 3. Coal consumed, 730-750 kg per 1 ton of molten iron production, 1. Possibility of utilizing inexpensive raw materials and fuel equivalent to that of the blast furnace process. ) 4. Net energy consumption decreased by 3 to 4%. 2. Low operating cost 5. CO2 emissions in the iron making process decreased by 4 to 3. Responds flexibly to variations in production rate 5%. 4. Compact and small incremental investment 5. Stable, high-quality supply of iron source available 6. Effective use of coal energy 7.
Pulverized coal combustion test: The influence of the grade and 4. The distribution of pulverized coal along the circumference: size of the pulverized coal, the temperature, pressure, and oxygen Utilizing a prototype, studies were made to understand the powder rich condition of the air feed, and other variables were evaluated. flow characteristics and to determine the distribution accuracy. 3. Progress and development results Considering the heavy oil injection level during an increased Following the domestic technology, Kobe Steel, Ltd.
1 blast furnace, Godo Steel, Ltd. operation in 1984. In 1986, pulverized coal injection equipment began operating an exclusively-developed system in 1982. for blast furnaces was adopted at 16 sites in Japan, accounting 45 Clean Coal Technologies in Japan 200 for 50% of the market. The number of blast furnaces employing 550 the technology had increased to 25 in 1996. In 1998, all the injection equipment, which increased the average domestic pulverized coal ratio to a 130 kg/t level, (Fig. 2). Table 1 shows the various types of injection for the blast furnace pulverized coal equipment.