Ungayisebenzisa kanjani isisefo se-molecular 4A?Yiziphi izidingo zendawo esebenza kuyo?Njengempahla enezimbotshana, isisefo se-molecular 4A sisetshenziswa kabanzi emikhakheni eminingi ngenxa yesisefo saso samangqamuzana amancane njengempahla yokuhlukanisa i-adsorption, izinto zokushintshisana ze-ion kanye nezinto ezisizayo.
Okokuqala, ake sibheke ukwethulwa kwe-4A molecular sieve:
Ngenxa yokuthi ubukhulu bayo bembotshana obusebenzayo bungu-0.4nm, ibizwa nge-4A molecular sieve, engakhanga izinhlanganisela zamangqamuzana aphansi njengamanzi, i-methanol, i-ethanol, i-carbon dioxide, i-ethylene, i-sulfur dioxide, i-hydrogen sulfide, ne-propylene.
- 1. Usayizi we-molecular wendlela yokusebenzisa isisefo se-molecular 4A
Ngenxa yokuthi ubukhulu bayo bembotshana obusebenzayo bungu-0.4mm, ayikwazi ukukhangisa noma iyiphi i-molecule (kuhlanganise ne-propane) enobubanzi obukhulu kuno-0.4mm, kodwa ukusebenza kwayo okukhethekile kokukhangiswa kwamanzi kuphakeme kunanoma iyiphi enye i-molecule, futhi ingenye yamangqamuzana asetshenziswa kakhulu. isisefo izinhlobo embonini.
- Indawo yokusebenza yendlela yokusetshenziswa ye-4A ye-molecular sieve
1. Uma izinga lokushisa liyi-110 ° C, kungenzeka ukuhwamulisa amanzi endaweni enkulu, kodwa ngeke kuxoshe amanzi emigodini yesihlungo se-molecular.Ngakho-ke, elabhorethri, ingenziwa isebenze futhi iphelelwe amanzi ngokumisa esithandweni somlilo.Izinga lokushisa liyi-350 ° C, futhi liyomiswa ngaphansi kwengcindezi evamile amahora angu-8 (uma kukhona ipompo ye-vacuum, ingamiswa ku-150 ° C amahora angu-5).
2. Isisefo se-molecular 4A esicushiwe sipholiswa sibe cishe ku-200°C (cishe imizuzu emi-2) emoyeni, futhi sidinga ukugcinwa kumshini wokukhipha amanzi ngokushesha.
3. Endaweni evunyelwe, ukuvikelwa kwe-nitrogen eyomile kufanele kusetshenziswe ngesikhathi sokupholisa nokulondolozwa, okungavimbela ngempumelelo umhwamuko wamanzi osemoyeni ukuthi ungaphinde ukhangiswe.Ngenxa yokuthi isisefo esidala samangqamuzana ngemva kokusetshenziswa sinokungcoliswa, akufanele sisebenze kuphela ekushiseni okungama-450 ° C, kodwa futhi nomhwamuko wamanzi noma igesi ye-inert (i-nitrogen, njll.) kufanele yethulwe ukuze ithathele indawo ezinye izinto ku-molecular sieve.
4. Gwema uwoyela namanzi awuketshezi lapho usebenzisa, futhi uzame ukugwema ukuthintana ngokuqondile namafutha namanzi awuketshezi.
Njenge-alkali metal aluminosilicate, isisefo se-molecular 4A sithandwa amakhasimende amaningi ekomisweni kwegesi noketshezi, futhi singasetshenziselwa ukucwenga nokuhlanza igesi noma uketshezi, njengokukhipha i-argon.Manje, ingabe uyaziqonda izixwayiso zokusetshenziswa kwayo?
Phequlula ulwazi olwengeziwe lwe-molecular sieve:
https://www.kelleychempacking.com/news/adsorption-performance-of-4a-molecular-sieve-for-h%e2%82%82s/
https://www.kelleychempacking.com/news/2-tips-to-extend-the-life-of-molecular-sieves/
https://www.kelleychempacking.com/news/korean-customer-inspected-the-production-schedule-of-80-tons-of-molecular-sieve/
Isikhathi sokuthumela: Nov-04-2022