Ama-Antifoamers asetshenziselwa ukunciphisa ukungezwani okungaphezulu kwamanzi, isisombululo nokumiswa, ukuvimbela ukwakheka kwegwebu, noma ukunciphisa igwebu elakhiwe ngesikhathi sokukhiqizwa kwezimboni.Ama-Antifoamers ajwayelekile ami kanje:
I. Amafutha Emvelo (okungukuthi Amafutha Kabhontshisi Wesoya, Amafutha ommbila, njll.)
Izinzuzo: iyatholakala, ingabizi futhi isebenziseka kalula.
Ukungalungi: kulula ukuwohloka futhi kukhuphule inani le-asidi uma ingagcinwa kahle.
II.I-Carbon Alcohol Ephezulu
I-high carbon alcohol iyi-molecule eqondile ene-hydrophobicity eqinile kanye ne-hydrophilicity ebuthakathaka, okuyi-antifoamer esebenzayo ohlelweni lwamanzi.Umphumela we-antifoaming wotshwala uhlobene nokuncibilika kwawo kanye nokusatshalaliswa kwesisombululo esinamagwebu.I-Alcohol ye-C7 ~ C9 iyi-Antifoamers ephumelela kakhulu.I-carbon High Alcohol ye-C12 ~ C22 ilungiswa ngama-emulsifiers afanelekile anosayizi wezinhlayiyana we-4 ~ 9μm, nge-emulsion yamanzi engu-20 ~ 50%, okungukuthi, i-defoamer ohlelweni lwamanzi.Amanye ama-ester nawo anomphumela we-antifoaming ku-penicillin fermentation, njenge-phenylethanol oleate ne-lauryl phenylacetate.
III.Ama-Antifoam we-Polyether
1. GP Antifoamers
Kwenziwe ngokwengeza i-polymerization ye-propylene oxide, noma ingxube ye-ethylene oxide ne-propylene oxide, ene-glycerol njenge-ejenti yokuqala.Ine-hydrophilicity empofu kanye nokuncibilika okuphansi endaweni enegwebu, ngakho-ke ilungele ukusetshenziswa oketshezini oluncane lokuvutshelwa.Njengoba ikhono layo le-antifoaming liphakeme kunalelo lokukhihliza amagwebu, lifaneleka ukuba lifakwe endaweni eyisisekelo ukuze kuvinjwe inqubo yokugwaza kwayo yonke inqubo yokuvutshelwa.
2. GPE Antifoamers
I-ethylene oxide yengezwa ekugcineni kwe-polypropylene glycol chain link ye-GP Antifoamers ukuze yakhe i-polyoxyethylene oxypropylene glycerol ene-hydrophilic end.I-GPE Antifoamer ine-hydrophilicity enhle, ikhono eliqinile le-antifoaming, kodwa futhi inokuncibilika okukhulu okubangela isikhathi esifushane sokugcinwa komsebenzi we-antifoaming.Ngakho-ke, inomphumela omuhle ku-viscous fermentation broth.
3. Ama-GPEs Antifoamers
I-block copolymer enamaketanga e-hydrophobic emikhawulweni yomibili kanye namaketanga e-hydrophilic yenziwa ngokuvala umkhawulo weketango le-GPE Antifoamers nge-hydrophobic stearate.Ama-athomu analesi sakhiwo athambekele ekuqoqeni esixhumi esibonakalayo segesi-uketshezi, ngakho anomsebenzi oqinile ongaphezulu kanye nokusebenza kahle okukhulu kokukhipha amagwebu.
IV.I-Poliether Modified Silicone
I-Polyether Modified Silicone Antifoamers iwuhlobo olusha lwama-defoam asebenza kahle kakhulu.Ibiza kakhulu ngezinzuzo zokuhlakazeka okuhle, ikhono eliqinile lokuvimbela igwebu, ukuzinza, okungewona ubuthi futhi okungenabungozi, ukuguquguquka okuphansi kanye nekhono eliqinile le-Antifoamers.Ngokuya ngezindlela ezihlukene zokuxhuma zangaphakathi, ingahlukaniswa izigaba ezimbili ezilandelayo:
1. I-copolymer ene--Si-OC- bond elungiswe nge-asidi njengesisusa.Le defoamer kulula ukwenza i-hydrolysis futhi inozinzo oluphansi.Uma i-amine buffer ikhona, ingagcinwa isikhathi eside.Kodwa ngenxa yentengo yayo ephansi, amandla okuthuthukiswa asobala kakhulu.
2. I-copolymer eboshwe yi-si-c-bond inesakhiwo esizinzile futhi ingagcinwa iminyaka engaphezu kweminyaka emibili ngaphansi kwezimo ezivaliwe.Kodwa-ke, ngenxa yokusetshenziswa kweplatinamu ebizayo njenge-catalyst enqubweni yokukhiqiza, izindleko zokukhiqiza zalolu hlobo lwama-antifoamers ziphezulu, ngakho-ke ayikasetshenziswa kabanzi.
V. Organic Silicon Antifoamer
...isahluko esilandelayo.
Isikhathi sokuthumela: Nov-19-2021