저탄화 석탄의 전처리 개질기술 현황
Report on Upgrading Technology for Low-Rank Coal
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The coal industry is facing a challenge to be replaced by clean energy like nuclear energy, with depletion of high rank-coal and social awareness that coal combustion is the main culprit of global warming around the world. Coal, however, is one of the major energy sources to supply about half of electricity consumed worldwide yet. Recently the price of crude oil has gone up to the highest level it's ever been. At the same time, the demand for coal fuel is growing and is predicted to continue. Although low-rank coal including brown coal accounts for nearly half of the world’s coal reserves, high moisture content, low heating value and spontaneous ignition behavior impede further utilization as an alternative energy source for oil. On the contrary, low content of sulfur and ash can make upgraded-brown coal substitute for oil. We thoroughly reviewed UBC process which was developed in Japan, to check on the applicability of the upgrade technology to domestic situation. And in closing, it was proposed to develop an appropriate upgrading process using Mongolian or North Korean brown coal with its vast coal reserves. It is expected that technological barrier could be overcome compared with coal fired power generation technologies.
Abstract
The coal industry is facing a challenge to be replaced by clean energy like nuclear energy, with depletion of high rank-coal and social awareness that coal combustion is the main culprit of global warming around the world. Coal, however, is one of the major energy sources to supply about half of electricity consumed worldwide yet. Recently the price of crude oil has gone up to the highest level it's ever been. At the same time, the demand for coal fuel is growing and is predicted to continue. Although low-rank coal including brown coal accounts for nearly half of the world’s coal reserves, high moisture content, low heating value and spontaneous ignition behavior impede further utilization as an alternative energy source for oil. On the contrary, low content of sulfur and ash can make upgraded-brown coal substitute for oil. We thoroughly reviewed UBC process which was developed in Japan, to check on the applicability of the upgrade technology to domestic situation. And in closing, it was proposed to develop an appropriate upgrading process using Mongolian or North Korean brown coal with its vast coal reserves. It is expected that technological barrier could be overcome compared with coal fired power generation technologies.
참고문헌 (15)
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