FCC Catalyst Ya Ƙaddamar da Y Zeolite: DAY-30, DAY-60 da DAY-120

FCC Catalyst Ya Ƙaddamar da Y Zeolite: DAY-30, DAY-60 da DAY-120

DAY{3}30, DAY-60 da DAY-120 FCC masu kara kuzari ana sayar da zeolites Y (DAY), waɗanda ainihin nau'in ultra-stable Y zeolite (USY), da DAY jerin ƙwayoyin ƙwayoyin cuta suna ɗaya daga cikin mahimman abubuwa masu aiki na FCC masu haɓakawa a cikin masana'antar tace mai na zamani.

Me yasa FCC ke Bukatar Kwayoyin Sieve Catalyst?

FCC tana tsaye ga Fluid Catalytic Cracking, muhimmin tsarin jujjuyawar kuzari a cikin masana'antar tace mai. Babban makasudin FCC shine a canza juzu'in man fetur mai nauyi zuwa gasoline, LPG, propylene, olefins mai haske, dizal, da mai sake zagayowar haske.

Masu haɓaka FCC suna buƙatar lokaci guda don biyan buƙatun babban acidity, zaɓin sifa mai kyau, babban kwanciyar hankali na hydrothermal, kyakkyawan juriya ga kashewa, da kyakkyawan aikin haɓaka ruwa. Y{1} nau'in zeolite molecular sieves ɗaya ne daga cikin mahimman abubuwan abubuwan haɓakawa na FCC na zamani, kuma jerin DAY na sieves na kwayoyin suna wakiltar Y{2} nau'in samfuran sikelin ƙwayoyin cuta a cikin filin FCC.

Menene DAY Kwayoyin Sieve?

DAY yana nufin Dealuminated Y, kuma DAY molecular sieve yawanci yana nufin Y{0}} nau'in zeolite wanda aka yi gyaran fuska. DAY kwayoyin sieve ba tsari mai zaman kansa ba ne da ya sha bamban da nau'in zeolite na Y{2}, sai dai nau'in nau'in nau'in nau'in siliki Y- nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in zeolite na Y-.

Ta hanyar maganin hydrothermal da sinadarai, Y{0} nau'in sinadari na ƙwayoyin cuta na iya zaɓin cire wasu daga cikin tsarin aluminum, ta haka zai canza silica - zuwa - rabon alumina, acidity, rarraba cibiyar acid, kwanciyar hankali na hydrothermal, tsarin pore, kwanciyar hankali na zafi, da zaɓen catalytic.

Kuma masu haɓaka FCC suna buƙatar kwanciyar hankali na hydrothermal mafi girma. Idan aka kwatanta da na yau da kullun Y{1}} nau'in sieves na kwayoyin halitta, DAY ƙwanƙwaran ƙwayoyin cuta sun fi iya jure yanayin zafi da yanayin zafi na FCC.

Halayen Tsari Na DAY Kwayoyin Sieves

DAY na cikin tsarin Y{0}} nau'in kwayoyin halitta, kuma tsarin sa yana da yanayin FAU na yau da kullun. Tsarinsa guda uku -madaidaicin haɗin haɗin gwiwa yana ba da damar masu amsawa da samfuran su yaɗu cikin crystal.

Ƙaddamarwa ɗaya daga cikin mahimman hanyoyin gyare-gyaren tsarin don DAY kwayoyin sieve, amma ba kawai batun rage abun ciki na aluminum ba ne. Don masu haɓakawa na FCC, ana buƙatar daidaita ma'auni tsakanin acidity, tsarin pore, kwanciyar hankali na hydrothermal, da zaɓi na catalytic.

Me yasa DAY Zeolite ke da mahimmanci ga FCC Catalysts?

Kamar yadda aka ambata, masu haɓaka FCC suna buƙatar sabuntawa akai-akai a ƙarƙashin matsanancin zafin jiki da yanayin tururin ruwa, Dealuminated Y (DAY) zeolite yana nuna mafi kyawun kwanciyar hankali na hydrothermal fiye da Y{0} nau'in sieves na kwayoyin halitta. Cibiyoyin acidic a cikin tsarin DAY suna iya haɓaka jujjuyawar manyan abubuwan hydrocarbons zuwa samfura masu sauƙi, kuma ana iya gyaggyara tsarinsa mai girma guda uku{2} kuma a haɗa su tare da kayan matrix don daidaita aikin watsawar mai ƙara kuzari.

Masu kara kuzari na FCC ba wai kawai suna nufin mafi ƙarfi ba ne kawai, amma suna buƙatar sarrafawa akan ayyukan fasa da zaɓin samfur. DAY zeolite ana iya sarrafa shi ta hanyar sigogi kamar silica{1} zuwa{2} rabon alumina, girman hatsi, acidity, da tsarin pore.

Musamman ma, FCC mai haɓakawa ba ainihin madaidaicin ƙwayar ƙwayar cuta bane! Tsarin hadadden tsari ne wanda ya hada da sieve kwayoyin halitta, matrix, binder, da sauran kayan aikin aiki. DAY kwayoyin sieve yana ɗaya daga cikin ainihin kayan aiki na FCC mai haɓakawa, ya dace da haɗuwa tare da matrix mai ƙara kuzari, maimakon kasancewa cikakkiyar mai haɓakawa ta FCC da kanta.

Didan aka kwatantaBtsakanin DAY-30, DAY-60And RANA-120

RANA-30 Mai Kara kuzari: Yana da ƙananan digiri na dealuminization, yana jaddada acidity da fashe ayyukan, kuma yana bin babban juzu'i, amma yana da ƙananan hali don samar da coke.

DAY-60 Mai kara kuzari: Yana da matsakaicin matsakaicin ma'amala da ma'auni mai kyau tsakanin ayyukan acid da kwanciyar hankali, yana mai da shi nau'in masana'antar FCC na yau da kullun.

DAY-120 Mai kara kuzari: Yana da zurfin ma'amala mai zurfi kuma yana da -silica, ultra{1}} tsayayyen sieve kwayoyin halitta tare da ingantacciyar kwanciyar hankali na hydrothermal, ƙarancin samuwar coke, da kuma tsawon rayuwa. Ya dace da manyan tsare-tsare masu ƙarfi na FCC{3}.

Don taimaka muku zaɓi daidai nau'in DAY jerin sieves kwayoyin halitta, bari mu yi ƙarin kwatancen kwatance: