Njodzi uye Hutongi hweiyo Dioxin

1.Kunobva dioxin

Dioxins izita rakajairika rekirasi yeklorini yepolynuclear inonhuhwirira makomisheni, yakapfupikiswa sePCDD/Fs. Zvikurukuru zvinosanganisira polychlorinated dibenzo-p-dioxins (pCDDs), polychlorinated dibenzofurans (PCDFs), etc. Kunobva uye kugadzira nzira ye dioxin yakaoma uye inogadzirwa kunyanya nekupisa kunoramba kuchipisa kwemarara akasanganiswa. Kana mapurasitiki, mapepa, huni uye zvimwe zvinhu zvinopiswa, zvinoputika uye oxidize pasi pemamiriro ekushisa kwepamusoro, nokudaro zvichigadzira dioxin. Zvinhu zvinofurira zvinosanganisira kuumbwa kwemarara, kutenderera kwemhepo, kupisa kwekupisa, etc. Tsvagiridzo inoratidza kuti yakanyanya tembiricha yerudzi rwe dioxin chizvarwa ndeye 500-800 ° C, inogadzirwa nekuda kwekusakwana kwekupisa kwemarara. Uye zvakare, pasi pemamiriro ekushisa akadzika, pasi pecatalysis yesimbi yekuchinja, dioxin precursors uye madiki mamorekuru zvinhu zvinogona kugadzirwa kuburikidza nekushomeka kwekushisa nemaune catalysis. Zvisinei, pasi pemamiriro eokisijeni akakwana, kupisa kwekupisa kunosvika 800-1100 ° C kunogona kunyatsodzivisa kuumbwa kwe dioxin.

2.Ngozi dze dioxin

Sechigadzirwa chekupisa, dioxins ane hanya zvikuru nekuda kwehupfu, kushingirira uye bioaccumulation. Dioxins inokanganisa kudzora kwemahomoni emunhu uye inonzwika munda zvinhu, zvine carcinogenic zvakanyanya, uye inokuvadza immune system. Kuchetura kwayo kwakaenzana neka1 000 kune potassium cyanide uye ka900 kune arsenic. Iyo yakanyorwa seyekutanga-chikamu chemunhu carcinogen uye imwe yekutanga batch yezvinodzora zvinosvibisa pasi peStockholm Convention on Persistent Organic Pollutants.

3.Matanho ekudzikisa dioxin muGasification Incinerator System

Iyo flue gasi kubuda kweGasification Incinerator System yakagadziridzwa neHYHH inoenderana ne2010-75-EU uye China's GB18485 zviyero. Hukoshi hweavhareji yakayerwa i ≤0.1ng TEQ/m³, iyo inoderedza kusvibiswa kwechipiri panguva yekupisa tsvina. Iyo Gasification Incinerator inotora gasification + incineration process kuti ive nechokwadi chekuti tembiricha yekupisa muchoto iri pamusoro pe850-1100 ° C uye flue gasi rekugara nguva iri ≥ 2 masekonzi, ichideredza kugadzirwa kwe dioxin kubva kunobva. Iyo yepamusoro-tembiricha flue gasi chikamu chinoshandisa quenching tower kukurumidza kudzikisa tembiricha yeflue gasi kusvika pazasi 200 ° C kudzivirira chipiri kugadzirwa kwema dioxin pane yakaderera tembiricha. Chekupedzisira, iwo emission standards e dioxins anozowanikwa.