RM新时代投资官网

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?鋼鐵焦化

 鋼鐵行業(yè)從煉焦、燒結、煉鐵、煉鋼到軋鋼整個(gè)冶煉工藝均涉及不同類(lèi)型污染物,涵蓋著(zhù)廢氣、廢水和廢渣三種類(lèi)型。具體而言,燒結和煉焦環(huán)節主要產(chǎn)生硫化物、氮氧化物和煙塵等廢氣,煉鐵及煉鋼環(huán)節主要產(chǎn)生爐渣等固體廢棄物,而軋鋼環(huán)節產(chǎn)生的污染物則主要是冷卻水等廢水污染,其中,燒結和煉焦環(huán)節產(chǎn)生的硫化物、氮氧化物和煙粉塵等氣體污染物較為嚴重。

  鋼鐵行業(yè)產(chǎn)生的廢氣以硫化物、氮氧化物及煙塵等為主,主要來(lái)自焦化、燒結、球團等鐵前環(huán)節。以某長(cháng)流程的大型鋼鐵企業(yè)(970萬(wàn)噸規模)的廢氣污染物排放為例,該企業(yè)排放的煙/粉塵主要來(lái)自原料系統(占19.5%)、煉鐵系統(焦化+燒結+球團+煉鐵,占62.3%)和煉鋼系統(占13.5%),三者合計約占鋼鐵行業(yè)煙/粉塵總排放總量的95.3%。具體而言,SO2主要來(lái)自球團(占34.1%)、燒結(占25.1%)和自備電站(占27.5%),約占總排放量的86.7%;NOX主要來(lái)自燒結(占30.9%)、自備電站(占23%)、球團(占15.1%)和焦化(占9.9%),約占總排放量的78.9%。


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RM新时代投资官网
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