FCC Catalyst Dealuminated Y Zeolite: ZUVA-30, ZUVA-60 uye ZUVA-120

FCC Catalyst Dealuminated Y Zeolite: ZUVA-30, ZUVA-60 uye ZUVA-120

ZUVA-30, DAY-60 uye DAY-120 FCC catalysts inogadziriswa Y (ZUVA) zeolites, inova rudzi rweyakanyanya kugadzikana Y zeolite (USY), uye DAY akatevedzana ma molecular sieves chimwe chezvinhu zvakakosha zvinoshanda zveFCC zvinokonzeresa mumaindasitiri emazuva ano ekunatsa mafuta.

Sei FCC ichida Molecular Sieve Catalyst?

FCC inomirira Fluid Catalytic Cracking, yakakosha kushandura maitiro muindasitiri yekuchenesa oiri. Chinangwa chikuru cheFCC ndechekushandura zvikamu zvinorema zvepetroleum kuita peturu, LPG, propylene, light olefins, dhiziri, uye light cycle mafuta.

FCC catalysts inofanirwa kusangana panguva imwe chete nezvinodiwa zveyakanyanya acidity, yakanaka chimiro selectivity, yakakwira hydrothermal kugadzikana, kuramba kwakanaka kudzima, uye yakanaka fluidization kuita. Y-type zeolite molecular sieves ndechimwe chezvinhu zvakakosha zvinobatika zveFCC catalysts, uye DAY nhevedzano yemamolecular sieve anomiririra Y-mhando yemamolecular sieve zvigadzirwa mumunda weFCC.

Chii chinonzi DAY Molecular Sieve?

DAY inomirira Dealuminated Y, uye DAY molecular sieve inowanzoreva Y-type zeolite yakagadziridzwa. ZUVA molecular sieve haisi chimiro chakazvimiririra chakasiyana zvachose kubva kuY-type zeolite, asi kuti imhando yemhando yepamusoro-silica Y-yakagadzirwa nekugadziriswa kweY-type zeolite.

Kuburikidza nemishonga yehydrothermal nekemikari, Y-type molecular sieve inokwanisa kubvisa imwe framework aluminium, zvozochinja silica-ku{2}}alumina ratio, acidity, acid center distribution, hydrothermal stability, pore structure, thermal stability, uye catalytic selectivity.

Uye FCC catalysts inoda yakakwira hydrothermal kugadzikana. Zvichienzaniswa neakajairika Y-mhando yemamolecular sieves, DAY ma molecular sieves anokwanisa kushingirira zviri nani-tembiricha uye hydrothermal nharaunda dzeFCC catalysts.

Structural Hunhu EZUVA Molecular Sieves

ZUVA ndere Y-rudzi rwemolecular sieve system, uye chimiro chayo chine chimiro cheFAU topology. Zvitatu zvaro-zvine mativi akabatana microporous chimiro chinobvumira reactants uye zvigadzirwa kuti zvipararire mukati mekristaro.

Dealumination ndiyo imwe yedzakanyanya kukosha nzira dzekugadzirisa zvimiro zveZUVA mamorekuru sieve, asi haisi nyaya yekuderedza zvealuminium. Kune FCC catalysts, chiyero chinoda kurohwa pakati pe acidity, pore chimiro, hydrothermal kugadzikana, uye catalytic selectivity.

Sei ZUVA Zeolite Yakakosha Kune FCC Catalysts?

Sezvambotaurwa, FCC catalysts inoda kudzokororwa patsva pasi petembiricha yakakwira uye mhute yemvura, Dealuminated Y (DAY) zeolite inoratidza kugadzikana kwehydrothermal kurinani pane akajairwa Y-mhando yema molecular sieves. Nzvimbo dzine acidic muDAY framework inokwanisa kusimudzira kushandurwa kwemahydrocarboni anorema kuita zvigadzirwa zvakareruka, uye matatu-dimensional microporous structure anogona kugadziridzwa nekusanganiswa nematrix ekugadzirisa mafambisirwo echatalyst's diffusion.

FCC catalysts haingovavarira kupaza kwakasimba, asi inoda kutonga pamusoro pekupwanya chiitiko uye kusarudza chigadzirwa. ZUVA zeolite inogona kudzorwa kuburikidza nemaparamendi akaita se silica-ku{2}}alumina ratio, saizi yezviyo, acidity, uye pore chimiro.

Zvikuru, FCC catalyst haisi chaiyo yakachena mamorekuru sieve! Iyo inoumbwa sisitimu inoumbwa ne molecular sieve, matrix, binder, uye zvimwe zvinoshanda zvikamu. ZUVA molecular sieve ndechimwe chezvinhu zvakakosha zvinoshanda zveFCC catalyst, yakakodzera kusanganiswa necatalyst matrix, pane kuve iyo yakazara FCC catalyst pachayo.

Dkana zvidavadoBpakati ZUVA-30, ZUVA-60And ZUVA-120

ZUVA-30 Catalyst: Iine dhigirii yakaderera yedealuminization, inosimbisa acidity uye kutsemuka basa, uye inoteedzera yakanyanya kutendeuka mwero, asi ine yakawedzera tsika yekugadzira coke.

ZUVA-60 Catalyst: Iine chiyero chepakati chekugadzirisa uye kuenzana kwakanaka pakati pekuita kweasidhi uye kugadzikana, zvichiita kuti ive rudzi rwakajairika rwemaindasitiri FCC catalysts.

ZUVA-120 Catalyst: Ine dhigirii rakadzama rekugadzirisa uye irefu{{0}silica, yakanyanyisa-yakagadzika Y molecular sieve ine optimal hydrothermal stability, yakaderera kuumbwa kwecoke, uye nguva yakareba inobatsira hupenyu. Inoshanda kune yakakwirira-kushanda kweFCC catalytic masisitimu.

Kuti ikubatsire kusarudza mhando chaiyo yeZUVA yakatevedzana mamolekyulu sieves, ngatiitei kuenzanisa kwakadzama: