SCR (Selective Catalytic Reduction) --- Fasahar denitration ta hanyar zaɓin catalytic reduction ita ce fasahar denitration ta hayaki mafi yawa da ake amfani da ita a duniya a halin yanzu; Yawancin tashoshin wutar lantarki a Amurka, Turai, Japan da sauran ƙasashe suna amfani da wannan fasahar. Ka'idar zaɓin hanyar rage catalytic (SCR) ita ce amfani da ammonia (NH)₃, ) a kan NO_daAikin rage, amfani da ammonia (NH)₃(A matsayin reducer, sa girman matakan kasa da 5% na ammonia a cikin hayaki gas tare da zafin jiki na 320 ~ 420 ° C ta hanyar ammonia jefa grid (AIG), tare da hayaki gas a cikin N_daBayan haɗuwa, yaduwa zuwa catalyst farfajiyar, a karkashin catalyst aiki, ammonia gas (NH)₃) Shiga hayaki gas a cikin NO da NO₂Reduce zuwa nitrogen mara lalacewa (N)₂da ruwa (H)₂0). A nan "zaɓi" yana nufin ammonia da aka zaɓi tare da NO a cikin hayaki gas_daYi sake amsa ba tare da yawan O a cikin hayaki gas₂Aiki. Tsarin sarrafawa na dukan amsawa shine yaduwar hayaki a cikin yankin layers na farfajiyar mai haɓaka da micropores na mai haɓaka.

Coal wutar lantarki tashar hayaki gas denitration. chemical kamfanonin. Karfe masana'antu high tandu hayaki gas denitration da dai sauransu.

4NO + 4N₃+O→4N₂+6H₂O

6NO₂+8N₃+O→7N₂+12H₂O

A+A₂+2N₃→2N₂+3H₂O

★ High defrosting inganci; General NOX cirewa kudi zai iya zuwa sama da 90%;

★SO₃Ƙananan oxidation rate, ƙananan ammonia tserewa, rage matsin lamba;

★ Tsarin kayan aiki na kayan aiki mai sauki, m, balaga da kwanciyar hankali, sauki don gyara;

★ ba tare da wani tasiri a kan boiler, low hadari;

★ Ba tare da tasirin wutar lantarki da kuma wutar lantarki mai amfani da kwal, m daidaitawa.

Zaɓin hanyar rage non-catalytic (SNCR) daga NO_daTechnology ne sanya ƙunshi NO_daYanayin rage (kamar ammonia mai ruwa, ammonia ko urea, da dai sauransu) yana da zafin jiki na 850 ~ 1200. Yankin C, da reducer sauri zafi rushe zuwa NH₃da sauran abubuwan da suka biyo baya NH₃NO tare da hayaki gas_daSamar da N2 da H tare da yin SNCR amsa₂Aika 0.

Amfani da kwal wutar lantarki tashar boiler hayaki gas denitration, siminti tandu, karfe high tandu, sinadarai kamfanonin hayaki gas denitration da dai sauransu

★ denitration inganci a 40% ~ 70%;

★ kananan sarari da ake buƙata, aiwatar da sauri da sauƙi;

★ ƙananan zuba jari na farko, ƙananan kuɗin aiki;

★ reducer zaɓi ruwa ammonia, ammonia, urea.