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物料輸送系統中的干霧抑塵應用

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物料輸送系統中的干霧抑塵應用

發布日期:2022-07-15 作者: 點擊:

在鋼鐵冶煉企業的礦石、燒結原料、煤炭燃料等物料的輸送系統中,粉塵產生一直是長期令人困擾的問題,國家也為此出臺了專門控制粉塵的法規條例。為解決粉塵問題,很多種粉塵控制方法和設備被投入使用,如:電除塵、濕電除塵、水霧除塵、噴淋除塵、布袋除塵、負壓除塵等。

近年來,因考慮到設備投入、使用成本以及出差方法對現場環境的影響,又出現了干霧抑塵應用。機械設備類的除塵,因設備投運費用大、能耗高、且占地面積大,無法在某些特殊空間使用,而水霧/噴淋除塵又會因用水量大造成水資源浪費并導致現場環境臟亂的原因,所以干霧抑塵的優點逐漸顯露,并在近幾年大量投入使用。

干霧抑塵,主要是通過特制的雙流體霧化噴嘴,將多個噴嘴集合在一起使用,產生30μm以內的超細水霧顆粒,利用霧滴的擴散特性,使物料輸送中產生的細微粉塵與水霧顆粒結合,使其受重力下落以便收集,防止微細粉塵擴散至空氣中。

 

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對于某些對干霧逸散距離有需求的場合,則需要多個噴嘴集成在一個或多個噴霧集管上,利用水霧結合射程變遠的特點,達到增加噴霧距離的目的。


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Dry fog dust suppression in material handling production line

 

Dust generation has long been a problem in the transport systems of ore, sintered raw materials, coal fuel and other materials in iron and steel smelters, and national regulations have been introduced to control dust. To solve the dust problem, many different dust control methods and equipment have been put into use, such as: electric dedusting, wet electric dedusting, water mist dedusting, spray dedusting, bag dedusting, negative pressure dedusting, etc.

 

In recent years, the application of dry fog dust suppression has emerged in consideration of equipment input, usage costs and the impact of travel methods on the site environment. Mechanical equipment type dust removal, because of the equipment operation costs, high energy consumption, and a large area, can not be used in some special space, and water fog / spray dust removal will be due to the large amount of water caused by the waste of water resources and lead to a dirty site environment, so the advantages of dry fog dust suppression gradually revealed, and in recent years a lot of use.

 

Dry fog dust suppression, mainly through a special air atomizing spray nozzle, a collection of multiple nozzles used together to produce ultra-fine water mist particles within 30μm, using the diffusion characteristics of the droplets, so that the fine dust generated in the material transport combined with the water mist particles, so that they fall by gravity in order to collect, to prevent the spread of fine dust into the air.

 

For certain applications where dry fog fugitive distances are required, multiple nozzles are integrated into one or more spray manifolds to take advantage of the combination of water mist with a longer range to achieve increased spray distances.


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