Na'urar da ke canzawa ita ce mafi mahimmancin na'urar tsarkakewa ta waje da aka sanya a cikin tsarin shaye-shaye, wanda zai iya canza iskar gas mai cutarwa kamar CO, HC da NOx daga iskar gas zuwa carbon dioxide mara lahani, ruwa da nitrogen ta hanyar oxidation da raguwa.

Hanyoyi uku masu haɓakawa (TWC) don babur don saduwa da EPA, CARB da Yuro III, IV, V, VI daidaitattun fitarwa.Ta amfani da baƙin ƙarfe chromium aluminum gami (FeCrAl) jikin saƙar zuma a matsayin mai ɗaukar hoto, platinum (Pt), palladium (Pd), rhodium (Rh) da sauran ƙarfe masu daraja a matsayin abubuwan haɓaka aiki.Yin amfani da fasahar sutura ta musamman don haɓaka mannewar ƙarfe masu daraja akan ƙarfe na ƙarfe, ingantaccen juzu'i don CO, HC da NOX na iya kaiwa sama da 85%, wanda zai taimaka masu haɓaka haɓaka buƙatun 30000km karko.

Kafin shigar da iskar gas na VOCs, dole ne a shigar da iska mai tsabta don cikakken preheat mai haɓakawa (preheat zuwa 240ºC ~ 350ºC) .Ya kamata a kula da mai haɓakawa a hankali, kuma jagorancin rami mai haɓaka ya kamata ya kasance daidai da jagorar kwararar iska. lokacin cikawa, da kuma sanya shi a hankali, ba tare da raguwa ba.Mafi kyawun zafin jiki na aiki na mai kara kuzari shine 250 ~ 500ºC, ƙaddamarwar iskar gas shine 500 ~ 4000mg / m3, kuma GHSV shine 10000 ~ 20000h-1.Ya kamata a kauce masa har zuwa yadda zai yiwu don kauce wa karuwar yawan iskar gas na kwatsam ko yawan zafin jiki na dogon lokaci na mai kara kuzari sama da 600ºC. Ya kamata mai kara kuzari ya zama mai danshi, kar a jiƙa ko kurkura da ruwa.

Ta hanyar catalytic oxidation na kowane irin masana'antu maras tabbas Organic sharar gas VOCs, don cimma masana'antu watsi matsayin, yafi amfani da catalytic konewa magani na abinci, sinadaran, bugu, inji, mota masana'antu, petrochemical, Organic sinadaran, Pharmaceutical sinadaran masana'antu watsi dauke da carbon monoxide. , hydrocarbons na kamshi, hydrocarbons da oxygen-dauke da abubuwan da suka samo asali, da dai sauransu mai guba da cutarwa kwayoyin sharar gida.