Isingeniso kanye Nezici Zokuncishiswa Kwezici Ezikhethiwe (SCR) Catalysts
Ama-catalyst e-Selective catalytic reduction (SCR) asebenzisa i-ejenti yokunciphisa ukuphendula ngokukhethiwe nge-NOx kugesi ephumayo, ekhiqiza-okungenabuthi nokunukubezekayo{1}}okungenayo i-N2 ne-H2O, ngaphansi kwesenzo se-catalyst.
Izinga lokushisa lokusabela alinqumi kuphela izinga lokusabela lama-reactants kodwa futhi nokusebenza kabusha kwe-catalyst ye-SCR. Ngokuvamile, amazinga okushisa aphakeme okusabela aholela kumazinga okusabela asheshayo nomsebenzi ophezulu we-catalyst, okuholela esikhaleni esincane sokusabela kanye nevolumu ye-reactor endaweni yeyunithi ngayinye. Uma kucatshangelwa ukushisisa okusabelayo, ukulawulwa kwesistimu, kanye nebanga lokushisa elifanele le-catalyst, amazinga okushisa esistimu ye-SCR ngokuvamile asethwa phakathi kuka-320 no-420 degrees .
Isivinini sesikhala siyipharamitha yomklamo oyinhloko wama-selective catalytic reduction (SCR) catalysts. Ilinganisa isikhathi sokuhlala kwegesi encibilikayo (igesi ye-flue emanzi ngaphansi kwezimo ezijwayelekile) ngaphakathi kwevolumu ye-catalyst, futhi ngokwezinga elithile inquma ukuthi ama-reactants asabela ngokuphelele yini. Kuphinde kube nomthelela ekukhunjweni kohlaka lwe-catalyst ye-reactor kanye nokulahlekelwa ukungqubuzana kwegesi ephumayo.
Ikhwalithi yephethini yokugeleza kwegesi ye-flue inquma ukusebenza kwe-catalyst. Iphethini efanelekile yokugeleza kwegesi ye-flue ayigcini nje ngokukhulisa ukusetshenziswa kwe-catalyst kodwa futhi yehlisa ukulahleka kokungqubuzana. Ekwakheni ubunjiniyela, inkambu yokugeleza kwegesi ye-flue kufanele icatshangelwe ngokucophelela. Amaphuzu omjovo we-ammonia kufanele abe nezimo zesiyaluyalu ukuze azuze ukuxubana okuhle negesi yomkhuhlane futhi akhe indawo egelezayo echazwe ngokucacile ehambisanayo.
