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    • 2. 发明申请
    • Nitrogenous sorbent for coal combustion
    • 用于煤燃烧的含氮吸附剂
    • US20070140941A1
    • 2007-06-21
    • US11642733
    • 2006-12-20
    • Douglas Comrie
    • Douglas Comrie
    • B01D53/00
    • B01D53/64C10L1/1266C10L9/10C10L10/02Y10S423/05
    • Sorbent compositions for coal contain nitrogenous components that reduce the level of mercury and/or sulfur emitted into the atmosphere upon combustion. The sorbent compositions are added directly to the fuel before combustion; directly into the fireball during combustion; are added to the fuel before combustion and into the flue gas post combustion zone; or are added completely into the flue gas post combustion zone, preferably where the flue gas temperature is at least 500° C. The sorbent compositions comprise a source of nitrate ions, a source of nitrite ions, or a combination of nitrate and nitrite sources. The sorbents are added as solids or as solutions in water. In various embodiments, the sorbent compositions further comprise a source of halogen such as bromide.
    • 用于煤的吸附剂组合物含有含氮组分,其降低了在燃烧时排放到大气中的汞和/或硫的水平。 吸附剂组合物在燃烧前直接加入到燃料中; 在燃烧过程中直接进入火球; 在燃烧前添加到燃料中并进入烟道气后燃烧区; 或完全添加到烟道气后燃烧区,优选在烟道气温度至少为500℃的范围内。吸附剂组合物包含硝酸根离子源,亚硝酸根离子源,或硝酸根和亚硝酸根源的组合。 吸附剂作为固体或溶液加入水中。 在各种实施方案中,吸附剂组合物还包含卤素源如溴化物。