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published in(发表于) 2013/12/22 18:54:08
Local media said Beijing intends to inject liquid nitrogen in the atmosphere to clear the fog and haze

According to the Xinhua News Agency, Hong Kong media said, scientists are studying whether pumping super-cooled gas into the atmosphere in Beijing can help reduce air pollution in the capital. Researchers at the Beijing weather modification Office He Hui (sound) said that the cooling capacity almost industrial refrigerant liquid nitrogen in ice three times to become the agent of an anti-haze, although research is still in its early stages.

According to the South China Morning Post website reported on December 18, the content of the research project is financed by the Government pumped into large containers of liquid nitrogen in the air, the form height above the ground of at least 10 metres from the mist. The liquid nitrogen will form crystals on small particles of dust and other pollutants, and then will drop to the ground. This thickness is less than 20 metres from the cooling gases prevents contaminated air and descends into the street. According to the researchers, in colder weather conditions, this article contains a lot of mist belt area of liquid nitrogen in the atmosphere can last several hours long.

Beijing Vice Mayor Lin Keqing said this week that the city was studying the use of such technology to combat haze, but he did not provide details.

Wang Xinfeng engaged in atmospheric chemistry studies of Shandong University said that using liquid nitrogen air pollution as an act of unprecedented innovation and received support from basic science, but this had to be very careful. He said: "using liquid nitrogen to produce a haze-free areas, artificial barrier against cold air pollutants, it is theoretically possible, but due to liquid nitrogen temperature is very low, we are even in the laboratory operations carefully. ”

(Original title: Hong Kong media said Beijing intends to use liquid nitrogen to clear the fog and haze)

　　据新华社电 港媒称，科学家正在研究向北京的大气中注入超冷气体是否能够帮助减少首都的空气污染。北京市人工影响天气办公室的研究人员何辉(音)说，制冷能力几乎达到干冰三倍的工业制冷剂液氮有望成为一种抗雾霾的作用剂，尽管相关研究还处在初期阶段。

　　据《南华早报》网站12月18日报道，这项由政府资助的研究计划的内容是把巨大容器中的液氮泵入空中，使之在地面上方形成高度至少达10米的薄雾。这些液氮将在尘埃和其他污染物的细小颗粒上形成晶体，然后便会掉落到地面上。这条厚度不到20米的冷却气体带同时还能阻止被污染的空气降落到街道上。研究人员称，在比较寒冷的天气情况下，这条含有大量雾状液氮的带状区域可以在大气中维持数小时之久。

　　北京市副市长林克庆本周称，该市正在研究利用这种技术抗击雾霾，但他没有提供细节。

　　山东大学从事大气化学研究的王新锋说，利用液氮治理空气污染是没有先例的创新之举，并且得到了基础科学的支持，但是这种技术的操作必须十分小心。他说：“利用液氮制造出一个没有雾霾的区域，以人工制造的寒冷作为抵御空气污染物的屏障，从理论上讲是可能的，但是由于液氮的温度极低，我们即便在实验室里操作时都十分小心。”

（原标题：港媒透露北京拟用液氮清除雾霾）

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