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    • 5. 发明授权
    • Partial combustion process for coal
    • 煤的部分燃烧过程
    • US4407206A
    • 1983-10-04
    • US376725
    • 1982-05-10
    • William BartokHoward Freund
    • William BartokHoward Freund
    • F23C6/04F23D1/00
    • F23C6/04F23B5/04
    • Disclosed is a process for combusting coal containing more than 1 wt. % sulfur which process comprises (a) providing a coal containing more than 1 wt. % sulfur and containing an organically bound calcium to sulfur ratio of at least about 0.8 to 1, (b) burning the coal to about 80% to 95% carbon conversion at temperatures greater than about 1,100.degree. C. in a first combustion zone in the presence of an oxidizing agent but under reducing conditions such that the equivalence ratio of coal to oxidizing agent is less than 1.5 but greater than or equal to 1.0, (c) separating the resulting solid effluent from the gaseous effluent from the first combustion zone, and (d) burning the gaseous effluent at a temperature from about 1,000.degree. C. to about 1,500.degree. C. in a second combustion zone under oxidizing conditions. A substantial amount of the sulfur of the coal is captured in the resulting solid effluent.
    • 公开了一种燃烧含有大于1wt。 %硫,该方法包括(a)提供含有大于1重量% %硫并且含有至少约0.8至1的有机结合的钙与硫的比例,(b)在第一燃烧区中在大于约1100℃的温度下将煤燃烧至约80%至95%的碳转化率 存在氧化剂但在还原条件下使得煤与氧化剂的当量比小于1.5但大于或等于1.0,(c)将得到的固体流出物与来自第一燃烧区的气态流出物分离,以及 (d)在氧化条件下,在第二燃烧区,在约1000℃至约1500℃的温度下燃烧气态流出物。 在生成的固体流出物中捕获大量的硫。