Masifa emolecularzvinhu zvakakosha zvinoshandiswa mumaindasitiri akasiyana siyana ekuparadzanisa mamorekuru zvichienderana nehukuru uye chimiro. Iwo macrystalline metal aluminosilicates ane matatu-dimensional anobatanidza network yealumina uye silica tetrahedra. Iyo inonyanya kushandiswamolecular sievesari 3A uye 4A, ayo akasiyana muhukuru hwepore uye mashandisirwo.
4A molecular sieves ane pore size inosvika mana angstroms, uku3A molecular sefavane diki pore saizi yakatenderedza 3 angstroms. Musiyano wesaizi yepore unoguma nekusiyana mukugona kwavo kwekushambadza uye kusarudza kwemamorekuru akasiyana.4A molecular sievesanowanzo shandiswa pakupera mvura kwegasi uye zvinwiwa, pamwe nekubvisa mvura kubva kune zvinonyungudutsa uye gasi rechisikigo. Kune rumwe rutivi, 3A molecular sieves anonyanya kushandiswa pakuderedza mvura yea unsaturated hydrocarbons uye polar compounds.
Kusiyana kwehukuru hwepore kunokanganisawo marudzi emamorekuru anogona kushambadzwa nemhando yega yega yemamorekuru sieve. 4A molecular sieves inoshanda mukushambadza mamorekuru akadai semvura, carbon dioxide, uye unsaturated hydrocarbons, ukuwo 3A molecular sieves ari kunyanya kusarudza kumamorekuru madiki semvura, ammonia, uye madoro. Kusarudzika uku kwakakosha mumashandisirwo apo tsvina chaiyo inoda kubviswa kubva musanganiswa wemagasi kana zvinwiwa.
Chimwe chinhu chakakosha chekufunga nezvazvo pakusarudza pakati3A uye 4A molecular sievesndiko kugona kwavo kutsungirira mwero wakasiyana wemwando. 3A molecular sieves ine yakanyanya kupikisa mhute yemvura zvichienzaniswa ne4A molecular sieves, zvichiita kuti dzive dzakakodzera kushandiswa uko kuvepo kwekunyorova kuri kunetseka. Izvi zvinoita kuti 3A molecular sieves ikwane kushandiswa mumhepo uye gasi kuomesa maitiro uko kubviswa kwemvura kwakakosha.
Panyaya yekushandiswa kwemaindasitiri, 4A molecular sieves inowanzoshandiswa mukugadzirwa kweokisijeni uye nitrogen kubva kumhepo yekuparadzanisa maitiro, pamwe nekuomeswa kwefiriji uye gasi rechisikigo. Kukwanisa kwavo kunyatsobvisa mvura uye carbon dioxide kunoita kuti zvive zvakakosha mumaitiro aya. Kune rumwe rutivi, 3A molecular sieves inowana kushandiswa kwakawanda mukuomeswa kwemahydrocarboni asina unsaturated, akadai segasi rakatsemuka, propylene, uye butadiene, pamwe nekucheneswa kwegasi repetroleum remvura.
Izvo zvakakosha kuti uzive kuti sarudzo pakati pe3A uye 4A molecular sieves zvinoenderana nezvinodiwa chaizvo zvekushandisa, kusanganisira rudzi rwemamorekuru anofanirwa kushambadzwa, mwero wehunyoro huripo, uye kuchena kunodiwa kwechigadzirwa chekupedzisira. Kunzwisisa mutsauko uripo pakati pemasefa emamorekuru kwakakosha pakusarudza sarudzo yakanyatsokodzera kune imwe indasitiri maitiro.
Mukupedzisa, nepo zvese zviri zviviri3A uye 4A molecular sieveszvakakosha pamhando dzakasiyana dzekubvisa mvura uye kuchenesa, misiyano yavo muhukuru hwepore, adsorption selectivity, uye kuramba kune humidity inoita kuti ive yakakodzera kune akasiyana maapplication. Nekunzwisisa misiyano iyi, maindasitiri anogona kuita sarudzo ine ruzivo nezve kusarudzwa uye kushandiswa kwema molecular sieves kukwidziridza maitiro avo uye kuwana inodiwa chigadzirwa kuchena.
Nguva yekutumira: Jun-27-2024