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    • 1. 发明授权
    • Method of injecting ammonia into a flue for waste gases
    • 将氨注入废气的烟道的方法
    • US4064219A
    • 1977-12-20
    • US601337
    • 1975-08-04
    • Yuzo YamashitaMasahiro KishiYasumasa Ishibashi
    • Yuzo YamashitaMasahiro KishiYasumasa Ishibashi
    • B01D53/50C01C1/242C01B17/00C01C1/24
    • C01C1/242B01D53/501
    • The method is characterized by bringing a mixture of ammonia and air to a temperature substantially equal to the temperature of the waste flue gas in the flue at the exit of an air heater, and then injecting the mixture into the flue from a number of nozzles arranged in uniformly spaced relation in the flue while regulating the respective flow rates thereof. The non-uniform distribution of sulfuric acid components and non-uniform temperature distribution in the exit flue are compensated by individually controlling the respective flow rates of the gaseous mixture discharged from the nozzles to conform the distribution of the injected ammonia to the measured sulfuric acid component distribution while adjusting the molar ratio of the injected ammonia to the sulfuric acid components, at each point having a nozzle, in accordance with the measured temperature at the respective point, to a value such that the resulting reaction product will not melt and adhere to any component, such as a precipitator, connected to the exit flue downstream of the air feeder.
    • 该方法的特征在于使氨和空气的混合物的温度基本上等于在空气加热器的出口处的烟道中的废烟气的温度,然后从布置的多个喷嘴将混合物注入烟道中 在烟道中以均匀间隔的关系,同时调节其相应的流速。 通过单独控制从喷嘴排出的气体混合物的各自的流量以使注入的氨的分布符合测量的硫酸组分来补偿出口烟道中硫酸组分的不均匀分布和不均匀的温度分布 分配,同时根据各点的测量温度,将注入的氨与硫酸组分的摩尔比在具有喷嘴的每个点处调节到使得所得反应产物不会熔化并粘附到任何 连接到空气供给器下游的出口烟道的诸如除尘器的部件。