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1. 发明授权

US4702893A Acid air pollution precipitators 失效
标题翻译：酸性空气污染除尘器
公开(公告)号：US4702893A
公开(公告)日：1987-10-27
申请号：US749389
申请日：1985-06-27
申请人： Samuel A. Kirk , Clair F. Kirk , John W. Kirk , Douglas J. Kirk
发明人： Samuel A. Kirk , Clair F. Kirk , John W. Kirk , Douglas J. Kirk
IPC分类号： B01D53/60 , C01B17/04
CPC分类号： C01B17/0478 , B01D53/60 , Y10S55/25
摘要： An apparatus is provided for the elimination of the gaseous pollutants sulfur dioxide and nitric oxide from the emissions of furnaces and smelters, and for the production of two commercial products, liquid sulfur and nitric acid. Two precipitators are operated in series, each containing an annular reaction chamber and a cylindrical separation chamber surrounded by the reaction chamber. The first precipitator combines the furnace or smelter emissions with methane in its reaction chamber in order to reduce the sulfur dioxide in the emissions to sulfur. The emissions are then passed through a tangential duct to the first precipitator's separation chamber where the fine sulfur praticles are converted to liquid sulfur by sending the mixed gases through an involuted spiral baffle and allowing the sulfur particles to coalesce on a trip wire grid. The sulfur particles then melt and fall by gravity to the bottom of the separation chamber, from which point the liquid sulfur is withdrawn. The gaseous emissions then pass from the first precipitator to the reaction chamber of the second precipitator, where they are combined with air and water to change to nitrogen dioxide and then to nitric acid. After passing into the second precipitator's separation chamber, the nitric acid is pumped to the top of the second precipitator's separation chamber and then is concentrated to commercial nitric acid by allowing the acid to descend through a steam jacket in the second precipitator's separation chamber. From the bottom of the second precipitator's separation chamber, the nitric acid is withdrawn as a commercial product from the second precipitator.
摘要翻译：提供了一种设备，用于从炉和冶炼厂的排放物中消除气态污染物二氧化硫和一氧化氮，以及生产两种商业产品液体硫和硝酸。两个除尘器串联运行，每个都包含环形反应室和由反应室包围的圆柱形分离室。第一台除尘器将炉子或冶炼厂排放物与其反应室中的甲烷结合在一起，以减少排放到硫中的二氧化硫。然后将排放物通过切向管道传递到第一除尘器的分离室，其中通过将混合气体通过渐开线的螺旋挡板送出并允许硫颗粒在跳闸线栅上聚结，将精细硫化物转化为液态硫。硫颗粒然后通过重力熔化和下降到分离室的底部，从该点离开液体硫。然后，气体排放物从第一除尘器传递到第二除尘器的反应室，在那里它们与空气和水组合以变成二氧化氮，然后变成硝酸。在进入第二除尘器的分离室之后，将硝酸泵送到第二除尘器分离室的顶部，然后通过允许酸在第二除尘器的分离室中通过蒸汽护套下降而浓缩成商业硝酸。从第二除尘器的分离室的底部，硝酸作为市售产品从第二除尘器中取出。

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