Kev Nyab Xeeb thiab Kev Tswj Xyuas ntawm Dioxin

1.Qhov chaw ntawm dioxin

Dioxins yog lub npe dav dav rau chav kawm ntawm chlorinated polynuclear aromatic compounds, abbreviated li PCDD/Fs. Feem ntau suav nrog polychlorinated dibenzo-p-dioxins (pCDDs), polychlorinated dibenzofurans (PCDFs), thiab lwm yam. Lub hauv paus thiab kev tsim cov txheej txheem ntawm dioxin yog qhov nyuaj thiab feem ntau yog tsim los ntawm kev kub nyhiab ntawm cov khib nyiab sib xyaw. Thaum cov yas, ntawv, ntoo thiab lwm yam khoom raug hlawv, lawv yuav tawg thiab oxidize nyob rau hauv qhov kub thiab txias, yog li tsim dioxins. Kev cuam tshuam muaj xws li cov khoom pov tseg, huab cua ncig, qhov kub thiab txias, thiab lwm yam. Kev tshawb fawb pom tau tias qhov ntsuas kub zoo tshaj plaws rau dioxin tiam yog 500-800 ° C, tsim tawm vim tsis tiav combustion ntawm cov khib nyiab. Tsis tas li ntawd, nyob rau hauv qhov kub thiab txias, nyob rau hauv lub catalysis ntawm kev hloov pauv hlau, dioxin precursors thiab me me molecule tshuaj muaj peev xwm raug synthesized los ntawm qis-kub txhob txwm catalysis. Txawm li cas los xij, nyob rau hauv cov xwm txheej txaus oxygen, qhov kub ntawm qhov kub ntawm 800-1100 ° C tuaj yeem zam qhov tsim ntawm dioxin.

2.Cov phom sij ntawm dioxin

Raws li ib tug by-product ntawm incineration, dioxins muaj kev txhawj xeeb loj vim lawv toxicity, persistence thiab bioaccumululation. Dioxins cuam tshuam rau kev tswj hwm ntawm tib neeg cov tshuaj hormones thiab suab thaj chaw, yog cov carcinogenic heev, thiab ua rau lub cev tsis muaj zog. Nws toxicity yog sib npaug rau 1,000 npaug ntawm cov poov tshuaj cyanide thiab 900 npaug ntawm arsenic. Nws tau teev npe raws li thawj theem tib neeg cov kab mob carcinogen thiab ib qho ntawm thawj pawg tswj hwm cov pa phem raws li Stockholm Convention on Persistent Organic Pollutants.

3.Kev ntsuas los txo cov dioxin hauv Gasification Incinerator System

Cov pa roj flue emission ntawm Gasification Incinerator System tsim los ntawm HYHH ua raws li 2010-75-EU thiab Tuam Tshoj tus qauv GB18485. Qhov ntsuas nruab nrab yog ≤0.1ng TEQ / m³, uas minimizes Secondary pollution thaum lub sij hawm pov tseg incineration txheej txheem. Lub Gasification Incinerator txais cov txheej txheem gasification + incineration los xyuas kom meej tias qhov kub thiab txias nyob rau hauv lub cub tawg yog siab tshaj 850-1100 ° C thiab lub sij hawm ntawm flue gas nyob yog ≥ 2 vib nas this, txo cov zus tau tej cov dioxin los ntawm qhov chaw. Qhov kub-kub flue gas seem siv lub quenching ntauwd kom sai txo cov roj flue kub kom qis dua 200 ° C kom tsis txhob muaj cov dioxins theem nrab ntawm qhov kub thiab txias. Thaum kawg, cov qauv emission ntawm dioxins yuav ua tiav.