Emkhakheni wokukhipha igesi ephuma emanzini, i-Guangdong GRVNES Environmental Protection Technology Co., Ltd. iklame izendlalelo ezingu-3 + 1 futhi yengeza ungqimba lwe-ammonia yokuphunyuka kwe-ammonia ukuze kuxazululwe isenzakalo sokuphunyuka kwe-ammonia lapho enye i-ammonia isifuthwe, ukuze ngaphezulu. i-ammonia efafaziwe ingakhishelwa emoyeni ngemva kokusabela ngemva kokuhlinzwa.
Ukwelashwa kwe-denitration ammonia yokuphunyuka ku-GRVNES flue gas ukwelashwa kanyekanye kokuphunyuka kwe-ammonia nge-ASC ammonia yokuphunyuka
TubuchwephesheRoadmap
Ngokwezidingo zephrojekthi kanye nesimo sangempela sokukhishwa, ukuvikelwa kwemvelo kweGreen Valley kunqume umzila wezobuchwepheshe we-"SCR + ASC" ukuze uhlangabezane nezidingo zephrojekthi.Umzila wezobuchwepheshe wephrojekthi uboniswa esithombeni esingezansi:
I-SCR+ASC
Imephu yomgwaqo ye-SCR + ASC Technology
Izindleko zokwengeza ama-nitrogen compounds (NOx) njalo enjinini zingancishiswa ngaphezu kuka-90% ngokusebenzisa ubuchwepheshe bokunciphisa i-catalytic, futhi izindleko ezisebenzayo ze-nitrogen compounds (NOx) zingancishiswa ngaphezu kuka-5% ngokusebenzisa ubuchwepheshe bokunciphisa i-catalytic. .Futhi ingcindezi yangemuva iphansi, futhi cishe akukho ukwanda kokucindezela emuva ekusetshenzisweni.
Umdwebo Wesimiso Sokusebenza we-SCR Catalys
Umdwebo Wesimiso Sokusebenza we-SCR Catalys
Isimiso Esisebenzayo se-ASC Ammonia Escape Catalyst:
I-ASC oxidation catalyst yakhiwe ngokuyinhloko yi-carrier kanye ne-catalytic coating.Kuyidivayisi yokuhlanza injini ye-diesel.Inhloso enkulu yalolu cingo ukufaka oxidize i-NH3 eyeqile ohlelweni lwe-diesel exhaust nge-O2 ukwenza i-N2 engangcolisi namanzi aphume enjinini, ukuze kubonakale ukuphuma okuhlanzekile kokukhipha udizili.Ingasetshenziswa ngokuhambisana ne-diesel particle catcher kanye ne-denitration purification catalyst.
I-Ignition Temperature
Okusho ukuthi, izinga lokushisa lapho i-catalyst ifinyelela ku-50% ukusebenza kahle kokuguqulwa.Izinga lokushisa lomlilo le-ASC ammonia escape catalyst lingu-250 ℃.Ukuze uzuze ukuguqulwa okuphezulu, izinga lokushisa le-exhaust lenjini lidinga ukuba phezulu.
Ifomu Lokupakisha
Ingambozwa ngokwehlukana noma igqitshwe nge-SCR, engahlangabezana nezidingo zokusebenza kahle kwesevisi.
I-Emission Standard:
Izinga lokuphunyuka kwe-ammonia ≤ 3ppm
Ukuncishiswa kwe-NOx emission vs ukungcola kwe-ammonia embonini kasimende
Ngenxa yokuthi ucwaningo ngohlelo lokudubula lweziko likasimende lusesimeni esibanzi uma kuqhathaniswa, kusenezingqinamba eziningi ezimweni zokusebenza eziko kanye nendlela yokwakheka kwama-nitrogen oxide embonini yesimende yasekhaya.Kunemithombo eminingi ye-nitrogen oxide kanye nezici eziningi ezinethonya.Emkhakheni wobuchwepheshe bokunciphisa ukukhishwa kwe-nitrogen oxide, ubuchwepheshe obuyinhloko obukhona buhlanganisa i-SCR, i-SNCR, ukushiswa okuhleliwe nokunye.
I-SCR selective catalytic reduction technology iwubuchwepheshe obuphambili be-denitration emhlabeni.Nge-ammonia noma i-urea njenge-ejenti ye-denitration kanye nokumuncwa okukhethayo kwe-catalytic ngaphansi kwesenzo se-catalyst embhoshongweni wokumuncwa, izinga lokuhlukanisa lingafinyelela ngaphezu kwama-90%.
Ubuchwepheshe be-SNCR busebenzisa indawo yokushisa efanele (900 ℃ ~ 1100 ℃) esithandweni sokubola ukuze kujove ingxube ye-ammonia kuso.Kuleli zinga lokushisa, i-ammonia (NH3) ihlangana ne-NOx kugesi ephumayo ukuze ikhiqize i-N2 ne-H2O.Izinga le-denitration ngokuvamile lingama-40% - 60%, ukusetshenziswa kwe-ammonia kukhulu, futhi izinga lokuphunyuka le-NH3 liphezulu, okungaba izikhathi ezingaphezu kuka-3 kune-SCR.
Njengamanje, amabhizinisi osimende asekhaya aseqede ukwakhiwa kwe-SNCR denitration.Lobu buchwepheshe busebenzisa inani elikhulu le-ammonia njenge-ejenti yokunciphisa i-NOx.I-ammonia kulula ukuvuza ohlelweni lokukhiqiza, ukuthutha, ukugcinwa kanye nokusetshenziswa, okuholela ekungcoleni okukhulu kwemvelo yomoya.
Ngakho-ke, imboni yamanje kasimende empeleni ibhekene nenkinga ephikisanayo.Ukusetshenziswa kwe-ammonia denitration kunganciphisa ukukhishwa kwe-nitrogen oxide, kodwa inkinga "yokuphunyuka kwe-ammonia" kunzima ukuyixazulula.Ngaphezu kwalokho, ukukhiqizwa kwe-ammonia ngokwayo kuyinkqubo yokusetshenziswa kwamandla aphezulu kanye nokungcola okuphezulu, futhi ukuthutha, ukugcinwa nokusetshenziswa kuzophinde kubangele "ukuphunyuka kwe-ammonia".
Ngokusekelwe ezinkingeni ezinjalo, amabhizinisi usimende kufanele aqinise ukuphathwa kokuthuthwa nokugcinwa kwe-ammonia, athuthukise ukusetshenziswa kahle kwe-ammonia futhi anciphise "ukuphunyuka kwe-ammonia".
Izophunyuka Kuphi I-Amonia?
Ngaphansi kwesimo samanje sokuvikelwa kwemvelo, ukunciphisa ukungcola okungcoliswa yizinkampani zikasimende kuyisidingo esingenakugwenywa semvelo yangaphandle;Ngesikhathi esifanayo, ngokuphindwaphindwa kobuchwepheshe bemboni kasimende, ukusetshenziswa kwamandla okuphansi kanye namazinga okukhishwa kwegesi nakho kuyinkambiso engenakugwenywa yokuthuthukiswa kwemboni.
Ezinkampanini zikasimende, ngokombono wezomnotho, izindleko zokuguqulwa kobuchwepheshe be-SCR kuphela kulindeleke ukuba zibe ngaphezu kwezigidi ezingu-30.Ngaphezu kwalokho, izindleko ze-catalyst ziphakeme kakhulu kune "SNCR + yokwelashwa komthombo".Okwesibili, ngesisekelo sokushiswa kwe-nitrogen ephansi kanye nokushiswa kwesiteji, kuhlanganiswe ne-SNCR, amanye amabhizinisi angahlangabezana nezindinganiso zamanje zokukhishwa kwe-NOx ngaphansi kwezimo ezinzile.
Ngokusekelwe kulezi zizathu ezingenhla, okwamanje, amabhizinisi amaningi kasimende asekhaya akhetha indlela ye- "SNCR + yokwelashwa komthombo" ukuze ahlangabezane nezidingo zokunciphisa ukukhishwa kwe-ammonia oxide, kodwa ubungozi obubangelwa ukuthi inkinga yokuphunyuka kwe-ammonia ingase ibe yimbi.
Isikhathi sokuthumela: May-07-2022