Kodi pali kusiyana kotani pakati pa 3a, 4a ndi 5a sieve ya molekyulu?Kodi mitundu itatu iyi ya sieve ya mamolekyulu imagwiritsidwa ntchito chimodzimodzi?Ndi zinthu ziti zomwe zimagwirizana ndi mfundo yogwirira ntchito?Ndi mafakitale ati omwe ali oyenera kwambiri?Bwerani mudzadziwe ndi JXKELLEY.
1. Mankhwala a 3a 4a 5a sieve ya molekyulu
3A molecular sieve chemical formula: 2/3K₂O1₃·Na₂₂O·Al₂O₃·2 siO₂.·4.5H₂O
4A molecular sieve chemical formula: Na₂O·Al₂O₃·2 siO₂·4.5H₂O
5A molecular sieve chemical formula: 3/4CaO1/4Na₂OAl₂O₃·2 siO₂·4.5H₂O
2. Pore kukula kwa 3a 4a 5a molecular sieve
Mfundo yogwirira ntchito ya sieve ya maselo imagwirizana kwambiri ndi kukula kwa pore kwa masikelo a molekyulu, omwe ndi 0.3nm/0.4nm/0.5nm motsatana.Amatha kutsatsa mamolekyu a mpweya omwe ma molekyulu awo amakhala ochepa kuposa kukula kwa pore.Kukula kwa kukula kwa pore, kumapangitsanso mphamvu ya adsorption.Kukula kwa pore kumakhala kosiyana, ndipo zinthu zomwe zimasefedwa ndikuzilekanitsa ndizosiyananso.M'mawu osavuta, 3a molekyulu sieve imatha kutsatsa mamolekyu omwe ali pansi pa 0.3nm, 4a molecular sieve, ma molekyulu adsorbed ayeneranso kukhala osakwana 0.4nm, ndi 5a molecular sieve chimodzimodzi.Akagwiritsidwa ntchito ngati desiccant, sieve ya molekyulu imatha kuyamwa mpaka 22% ya kulemera kwake mu chinyezi.
3. 3a 4a 5a molecular sieve ntchito makampani
3 Sieve ya molekyulu imagwiritsidwa ntchito kwambiri poyanika gasi wosweka mafuta, olefin, gasi woyenga ndi gasi wamafuta, komanso desiccant mu mankhwala, mankhwala, magalasi otsekereza ndi mafakitale ena.Amagwiritsidwa ntchito kwambiri poyanika zamadzimadzi (monga ethanol), kuyanika kwa mpweya wa galasi lotsekereza, nayitrogeni ndi mpweya wosakanikirana wa hydrogen, kuyanika kwa refrigerant, etc.
4A ma sieve a ma molekyulu amagwiritsidwa ntchito kwambiri poyanika gasi ndi mpweya wosiyanasiyana wamankhwala ndi zakumwa, mafiriji, mankhwala, zidziwitso zamagetsi ndi zinthu zosakhazikika, kuyeretsa argon, kulekanitsa methane, ethane ndi propane.Amagwiritsidwa ntchito kwambiri poyanika kwambiri mpweya ndi zakumwa monga mpweya, gasi, ma hydrocarbon, mafiriji;kukonzekera ndi kuyeretsa argon;static kuyanika kwa zipangizo zamagetsi ndi zowonongeka;kuchotsera madzi m'thupi mu utoto, poliyesitala, utoto ndi zokutira.
5A molecular sieve amagwiritsidwa ntchito makamaka poyanika gasi, desulfurization ndi kuchotsa mpweya woipa;kulekana kwa nayitrogeni ndi okosijeni kukonza mpweya, nayitrogeni ndi haidrojeni;kukhetsa mafuta kuti alekanitse ma hydrocarbon abwinobwino kuchokera ku nthambi zama hydrocarbons ndi ma cyclic hydrocarbon.
Komabe, malo akuluakulu apamwamba komanso kutsatsa kwa polar kwa ma sieve a ma molekyulu a 5A osinthika amatha kukwaniritsa kuyatsa kwamadzi ndi ammonia otsalira.Kusakaniza kwa nayitrogeni-hydrogen wovunda kumalowetsa mu chowumitsira kuchotsa chinyezi chotsalira ndi zonyansa zina.Chipangizo choyeretsera chimagwiritsa ntchito nsanja ziwiri zotsatsira, imodzi imatenga mpweya wowuma wa ammonia, ndipo ina imachotsa chinyezi ndi ammonia yotsalira pamalo otentha (nthawi zambiri 300-350 ℃) kuti akwaniritse cholinga chokonzanso.Tsopano, Kodi mutha kupeza kusiyana pakati pa 3a 4a 5a sieve ya maselo?
Nthawi yotumiza: Aug-09-2022