Zowopsa ndi Ulamuliro wa Dioxin

1.Gwero la dioxin

Ma dioxins ndi dzina lodziwika bwino la kalasi yamafuta onunkhira a chlorinated polynuclear, ofupikitsidwa ngati PCDD/Fs. Makamaka monga polychlorinated dibenzo-p-dioxins (pCDDs), polychlorinated dibenzofurans (PCDFs), etc. gwero ndi mapangidwe limagwirira dioxin ndi zovuta ndipo amapangidwa makamaka ndi moto mosalekeza wa zinyalala wosanganiza. Mapulasitiki, mapepala, matabwa ndi zinthu zina zikawotchedwa, zimang'ambika ndi oxidize pansi pa kutentha kwakukulu, motero kupanga ma dioxin. Zomwe zimakhudzidwa zimaphatikizapo kupanga zinyalala, kuyendayenda kwa mpweya, kutentha kwa moto, ndi zina zotero. Kafukufuku amasonyeza kuti kutentha kwabwino kwa mtundu wa dioxin ndi 500-800 ° C, wopangidwa chifukwa cha kuyaka kosakwanira kwa zinyalala. Kuphatikiza apo, pansi pa kutentha kwapansi, pansi pa catalysis ya zitsulo zosinthika, ma precursors a dioxin ndi zinthu zing'onozing'ono za molekyulu zitha kupangidwa kudzera pakuchepetsa kwadala mwadala. Komabe, pansi pamikhalidwe yokwanira ya okosijeni, kutentha kwakuya kufika pa 800-1100 ° C kumatha kupewa kupanga dioxin.

2.Zowopsa za dioxin

Monga chotulukapo pakuwotchedwa, ma dioxin ndi omwe amadetsa nkhawa kwambiri chifukwa cha kawopsedwe, kulimbikira komanso kuchulukirachulukira kwawo. Ma dioxins amakhudza kuwongolera kwa mahomoni amunthu komanso zinthu zomwe zimamveka bwino, zimakhala zowopsa kwambiri, ndipo zimawononga chitetezo chamthupi. Poizoni wake ndi wofanana ndi potassium cyanide nthawi 1,000 ndipo nthawi 900 kuposa arsenic. Imalembedwa ngati mtundu woyamba wa khansa yamunthu komanso imodzi mwamagulu oyamba owononga zowononga zoyendetsedwa ndi Stockholm Convention on Persistent Organic Pollutants.

3.Njira zochepetsera dioxin mu Gasification Incinerator System

Kutulutsa kwa gasi wamtundu wa Gasification Incinerator System wopangidwa ndi HYHH kumagwirizana ndi miyezo ya 2010-75-EU ndi GB18485 yaku China. Mtengo wapakati woyezedwa ndi ≤0.1ng TEQ/m³, zomwe zimachepetsa kuipitsidwa kwachiwiri panthawi yopsereza zinyalala. The Gasification Incinerator imatenga gasification + incineration process kuti iwonetsetse kuti kutentha kwa ng'anjo kuli pamwamba pa 850-1100 ° C ndipo nthawi yokhalamo mpweya wa flue ndi ≥ masekondi a 2, kuchepetsa kupanga dioxin kuchokera kugwero. Gawo la mpweya wotentha kwambiri limagwiritsa ntchito nsanja yozimitsira kuti muchepetse kutentha kwa mpweya wa flue mpaka pansi pa 200 ° C kuti mupewe kutulutsa kwachiwiri kwa dioxin pa kutentha kochepa. Pomaliza, miyezo yotulutsa ma dioxin idzakwaniritsidwa.