FCC Catalyst Dealuminated Y Zeolite: DAY-30, DAY-60 me DAY-120

FCC Catalyst Dealuminated Y Zeolite: DAY-30, DAY-60 me DAY-120

DAY -30, DAY-60 me DAY-120 FCC whakakōkī i whakakōkīhia te Y (DAY) zeolites, he mea tino he momo o ultra-stable Y zeolite (USY), me DAY raupapa molecular sieves ko tetahi o nga waahanga kaha o te FCC catalysts i roto i nga ahumahi para hinu hou.

He aha te take e hiahia ai a FCC ki te Kaihanga Molecular Sieve Catalyst?

Ko te FCC e tu ana mo te Fluid Catalytic Cracking, he tukanga whakahuri nui i roto i te ahumahi para hinu. Ko te whainga matua o te FCC ko te huri i nga hautau hinu taumaha ki te penehīni, LPG, propylene, olefins mama, diesel, me te hinu huringa marama.

Ko nga kaikooti FCC me tutuki i te wa kotahi nga whakaritenga o te kawatanga teitei, te whiriwhiringa ahua pai, te pumau hydrothermal teitei, te aukati pai ki te whakakore, me te pai o te mahi wai. Ko te Y-momo zeolite sieves tetahi o nga waahanga kaha matua o nga whakakōkī FCC hou, ā, ko te raupapa DAY o nga tatari rāpoi he tohu Y-momo momo molecular sieve hua i roto i te mara FCC.

He aha te DAY Molecular Sieve?

Ko te DAY te tikanga mo te Dealuminated Y, a ko te tatari molecular DAY te tikanga e tohu ana ki te momo Y{0}}zeolite kua pahemo te whakarereketanga. Ko te tatari ngota rāpoi DAY ehara i te anga motuhake e tino rerekee ana i te momo Y-zeolite, engari he momo momo rawa -silica Y-teitei i hangaia ma te whakawhanaunga o te momo Y-zeolite.

Na roto i nga maimoatanga waiariki me te matū, ka taea e te tatari ngota momo Y{0}}te tango i etahi o te konumohe angamahi, na reira ka huri i te owehenga konumohe -ki-te konumohe, te kawatanga, te tohatoha pokapū waikawa, te pumau waiariki, te hanganga pore, te whakamaaramatanga o te waiariki, me te whiriwhiringa whakangao.

A ko nga whakakōkī FCC e hiahia ana kia teitei ake te pūmautanga hydrothermal. Ka whakatauritea ki nga tatari ngota momo Y -noa, he pai ake te kaha o nga tatari ngota rapoi DAY ki te tu atu ki te -te pāmahana teitei me te taiao waiariki o te whakakōkī FCC.

Nga Ahuatanga Hanganga o te DAY Molecular Sieves

Ko te DAY no te momo Y-pūnaha tatari rāpoi ngota, a ko tana angamahi he topology FAU angamaheni. Ko ona hanganga e toru-ahua hono honohono ka taea e nga tauhohenga me nga hua te tirara ki roto i te karaihe.

Ko te whakakorenga tetahi o nga tikanga whakarereke hanganga tino nui mo te tatari ngota rapoi DAY, engari ehara i te mea ko te whakaiti noa i te ihirangi konumohe. Mo nga whakakōkī FCC, me patu te toenga i waenga i te kawatanga, te hanganga pore, te whakamaarama waiariki, me te whiriwhiringa o te catalytic.

He aha te mea he mea nui te DAY Zeolite mo te FCC Catalysts?

Ka rite ki te korero, me whakahou ano nga whakakorikori FCC i raro i te pāmahana teitei me nga tikanga kohu wai, Ko te Dealuminated Y (DAY) zeolite he pai ake te pai o te waiariki i era momo tatari ngota Y -noa. Ka taea e nga pokapu waikawa i roto i te anga DAY te whakatairanga i te hurihanga o nga waiwaro taumaha ki nga hua mama, a ka taea te whakarereke i ona hanganga microporous e toru -ka honoa ki nga rauemi matrix hei whakatika i te mahi tiritiri o te whakakorikori.

Ko nga kaiwhakatuma FCC e kore e whai noa mo te kapiti kaha, engari me whai mana whakahaere mo te mahi kapiti me te whiriwhiringa hua. Ka taea te whakahaere i te zeolite DAY na roto i nga tawhā penei i te ōwehenga silica-ki-alumina, te rahi o te witi, te waikawa, me te hanganga pore.

Ko te mea nui, ko te whakakōkī FCC ehara i te tino tatari rāpoi parakore! He pūnaha hiato i tito i te tatari rāpoi, matrix, here, me etahi atu waahanga mahi. Ko te tatari molecular DAY tetahi o nga rawa kaha o te whakakōkī FCC, he pai mo te whakakotahi me te matrix whakakōkī, kaua ko te whakakōkī FCC tonu.

DrerekētangaBi waenganui DAY-30, DAY-60And RA-120

DAY-30 Catalyst: He iti ake te tohu o te tuku, ka whakanui i te kawatanga me te mahi kapiti, me te whai i te tere o te hurihanga, engari he ahua nui ki te whakaputa coke.

DAY-60 Catalyst: He ahua ngawari te mahi me te taurite pai i waenga i te mahi waikawa me te pumau, ka waiho hei momo whakakorikori FCC ahumahi.

DAY-120 Catalyst: He hohonu ake te ahua o te whakangao, he tatari -silica teitei, ultra{1}}pumau Y mo te whakamaarama me te tino pai o te waiariki, he iti ake te ahua o te hanga coke, me te roa o te ora o te whakakorikori. E tika ana ki te -whakamahinga teitei FCC pūnaha catalytic.

Hei awhina i a koe ki te whiriwhiri i te momo tatari mo te rangatū rāpoi DAY, me whakarite he whakatauritenga ake: