Ndeupi musiyano uripo pakati pe3a, 4a ne5a molecular sieves?Aya marudzi matatu emasefa emamorekuru anoshandiswa kune chinangwa chimwe chete here?Ndezvipi zvinhu zvine chekuita nemusimboti wekushanda?Ndeapi maindasitiri anonyanya kukodzera?Huya unzwe neJXKELLEY.
1. Mushonga wemakemikari we3a 4a 5a molecular sieve
3A molecular sieve kemikari formula: 2/3K₂O1₃·Na₂₂O·Al₂O₃·2SiO₂.·4.5H₂O
4A molecular sieve chemical formula: Na₂O·Al₂O₃·2SiO₂·4.5H₂O
5A molecular sieve kemikari formula: 3/4CaO1/4Na₂OAl₂O₃·2SiO₂·4.5H₂O
2. Iyo pore saizi ye3a 4a 5a molecular sieve
Nheyo yekushanda yemasefa yemamorekuru inonyanya kuenderana nehukuru hwepore hwema molecular sieves, ayo ari 0.3nm/0.4nm/0.5nm zvichiteerana.Vanogona adsorb gasi mamorekuru ayo molecular dhayamita idiki pane pore saizi.Iyo yakakura saizi yehukuru hwepore, iyo yakakura iyo adsorption kugona.Kukura kwepore kwakasiyana, uye zvinhu zvinosefa nekuparadzaniswa zvakasiyanawo.Mumashoko akareruka, 3a molecular sieve inogona kungoshambadza mamorekuru pazasi 0.3nm, 4a molecular sieve, adsorbed mamorekuru anofanirawo kunge ari pasi pe0.4nm, uye 5a molecular sieve yakafanana.Kana yakashandiswa se desiccant, molecular sieve inogona kutora kusvika ku22% yehuremu hwayo muhunyoro.
3. 3a 4a 5a molecular sieve application industry
3A molecular sieve inonyanya kushandiswa kuomesa petroleum cracking gasi, olefin, refinery gasi uye oilfield gasi, pamwe nedesiccant mumakemikari, mishonga, insulating girazi uye mamwe maindasitiri.Inonyanya kushandiswa kuomesa zvinwiwa (senge ethanol), kuomeswa kwemhepo kwegirazi inodzivirira, nitrogen uye hydrogen yakasanganiswa gasi kuomesa, kuomeswa kwefiriji, nezvimwe.
4A molecular sieves anonyanya kushandiswa kuomesa gasi rechisikigo uye akasiyana makemikari magasi uye zvinwiwa, mafiriji, mishonga, yemagetsi data uye zvinhu zvinoputika, kuchenesa argon, uye kupatsanura methane, ethane uye propane.Inonyanya kushandiswa pakuomeswa kwakadzika kwemagasi uye zvinwiwa zvakaita semhepo, gasi rechisikigo, mahydrocarboni, mafiriji;kugadzirira uye kucheneswa kweArgon;static kuomeswa kwezvinhu zvemagetsi uye zvinhu zvinoparara;dehydrating agent mupendi, mapolyester, madhayi uye machira.
5A molecular sieve inonyanya kushandiswa kuomesa gasi, desulfurization uye kubvisa carbon dioxide;kupatsanurwa kwenitrogen uye okisijeni kugadzirira oksijeni, nitrogen uye hydrogen;petroleum dewaxing kupatsanura akajairwa mahydrocarbon kubva kumabranched hydrocarbons uye cyclic hydrocarbons.
Nekudaro, iyo hombe yakananga nzvimbo uye polar adsorption yezvezve 5A molecular sieves inogona kuwana yakadzika adsorption yemvura uye yakasara ammonia.Musanganiswa we nitrogen-hydrogen wakaora unopinda muomesi kuti ubvise hunyoro hunenge hwasara uye humwe hutsvina.Chishandiso chekuchenesa chinotora shongwe mbiri, imwe inotora gasi rekuora ammonia yakaoma, uye imwe inobvisa unyoro uye inosara ammonia munzvimbo inopisa (kazhinji 300-350 ℃) kuzadzisa chinangwa chekuzvarwa patsva.Zvino, Unogona here kuwana mutsauko pakati pe3a 4a 5a molecular sieves?
Nguva yekutumira: Aug-09-2022