Antifoamers anoshandiswa kuderedza kushushikana kwemvura, mhinduro uye kumiswa, kudzivirira kuumbwa kwefuro, kana kuderedza furo rinoumbwa panguva yekugadzirwa kwemaindasitiri.Common Antifoamers ndeaya anotevera:
I. Natural Oil (kureva Mafuta eSoybean, Mafuta eChibage, nezvimwewo)
Zvakanakira: iripo, inodhura-inoshanda uye nyore kushandisa.
Zvakaipa: zviri nyore kukanganisa uye kuwedzera kukosha kweasidhi kana isina kuchengetwa zvakanaka.
II.Doro Kabhoni Yakakwirira
Yakakwira kabhoni doro imutsetse molecule ine yakasimba hydrophobicity uye isina simba hydrophilicity, inova inoshanda antifoamer muhurongwa hwemvura.Iyo antifoaming mhedzisiro yedoro ine hukama nekunyungudika kwayo uye kupararira mune inopupuma mhinduro.Doro reC7 ~ C9 ndiyo inonyanya kushanda Antifoamers.High carbon Alcohol yeC12 ~ C22 inogadzirwa nema emulsifiers akakodzera ane particle size ye 4 ~ 9μm, ne 20 ~ 50% emulsion yemvura, kureva, defoamer mumvura.Mamwe esters anewo antifoaming mhedzisiro mupenicillin kuvirisa, senge phenylethanol oleate uye lauryl phenylacetate.
III.Polyether Antifoamers
1. GP Antifoamers
Yakagadzirwa nekuwedzera polymerization yepropylene oxide, kana musanganiswa weethylene oxide uye propylene oxide, ine glycerol sechinhu chekutanga.Iyo ine hurombo hunyoro hwe hydrophilicity uye yakaderera kunyungudika mumhepo inopupuma, saka yakakodzera kushandiswa mune yakatetepa yekuvirisa mvura.Sezvo kugona kwayo kwekudzivirira furo kuri pamusoro peiyo yekubvisa furo, inokodzera kuwedzerwa mu basal medium kuvharidzira kubuda furo kwese kuvirisa.
2. GPE Antifoamers
Ethylene oxide inowedzerwa pamagumo epolypropylene glycol chain link yeGP Antifoamers kuti iite polyoxyethylene oxypropylene glycerol ine hydrophilic end.GPE Antifoamer ine yakanaka hydrophilicity, yakasimba antifoaming kugona, asi zvakare ine hombe solubility iyo inokonzeresa pfupi yekugadzirisa yeantifoaming chiitiko.Nokudaro, ine simba rakanaka mu viscous fermentation broth.
3. GPEs Antifoamers
A block copolymer ine hydrophobic cheni kumagumo ese uye hydrophilic cheni inoumbwa nekusimbisa ketani yekupedzisira yeGPE Antifoamers ine hydrophobic stearate.Mamorekuru ane chimiro ichi anowanzo kuungana pagasi-mvura yemvura, saka ane yakasimba pamusoro pekuita uye hukuru hwekubvisa furo.
IV.Polyether Yakagadziriswa Silicone
Polyether Modified Silicone Antifoamers imhando nyowani yemhando yepamusoro-inoshanda defoamers.Iyo inodhura-inoshanda nezvakanakira kupararira kwakanaka, yakasimba furo inhibition kugona, kugadzikana, kusiri-chepfu uye kusakuvadza, kuderera kuderera uye kwakasimba Antifoamers kugona.Zvinoenderana neakasiyana emukati ekubatanidza modhi, inogona kukamurwa muzvikamu zviviri zvinotevera:
1. Copolymer ine -Si-OC- chisungo chakagadzirwa neasidhi se catalyst.Iyi defoamer iri nyore kuita hydrolysis uye ine kusagadzikana kwakashata.Kana amine buffer iripo, inogona kuchengetwa kwenguva yakareba.Asi nekuda kwemutengo wayo wakaderera, kugona kwekusimudzira kuri pachena.
2. Iyo copolymer yakasungirirwa ne - si-c-bond ine chimiro chakagadzikana uye inogona kuchengetwa kwemakore anopfuura maviri pasi pemamiriro akavharwa.Zvisinei, nekuda kwekushandiswa kweplatinum inodhura sechinokonzera mukugadzirwa kwekugadzira, mari yekugadzirwa kwemhando iyi ye antifoamers yakakwirira, saka haisati yashandiswa zvakanyanya.
V. Organic Silicon Antifoamer
... next chapter.
Nguva yekutumira: Nov-19-2021