Coal upgrading
阅读：969发布：2023-12-06
专利汇可以提供Coal upgrading专利检索，专利查询，专利分析的服务。并且A method for upgrading coal to a higher quality fuel or feed stock by mixing coal with water and heating the mixture in a nonoxidizing atmosphere at a temperature near the critical temperature of water and under a pressure sufficient to maintain substantially all of the water in the liquid state. By this process at least the sulfur and/or ash content of the coal is reduced.，下面是Coal upgrading专利的具体信息内容。
2. A method according to claim 1 wherein said pressure is in the range of from about 1,545 to about 3,226 p.s.i.a.
3. A method according to claim 1 wherein said coal is subdivided to be substantially all no greater than about 1 inch effective diameter particles.
4. A method according to claim 1 wherein said coal is at least one of bituminous and lignite and is subdivided to be substantially all no greater than about 1 inch effect diameter particles, said temperature is from about 650* to about 706* F., and said time is for at least about 1 minute.
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