The output of key technologies in the national project, 'high performance industrial furnace development project' and the future scope

摘要

With Japan's preparation of its "Action program to prevent global warming" in 1990 and the holding of the United Nations Conference on Environment and Development (the Earth Summit) in 1992 as a backdrop, reflecting the global effort to protectthe environment, a "high-performance industrial furnace development project" was launched in 1993 by the New Energy & Industrial Technology Development Organization (NEDO). This project focuses on the development of a combustion technology which uses airthat is preheated to extremely high temperatures (above 1,000℃), heretofore considered impossible. Not only can this technology reduce carbon dioxide emission, thought to cause the greenhouse effect, by over 30% , but it can also reduce nitrogen oxideemission by nearly half. This new technology makes use of the recently-developed high-cycle regenerative heat exchanger, for preheating the furnace air supply. This exchanger preheats air to above 1,000℃, much higher than for conventional furnaces, and then this air isinjected with fuel R&D data have shown that CO{sub}2 and NO{sub}x emissions can be reduced markedly. However, the theoretical analysis is yet to be made, thereby hampering efforts to have this advanced technology become widely adopted. This time we report the generals of output of this project in the status quo, and state project policy to the last stage of this project.