Ukusetshenziswa Kwezishintshi Zokushisa Ezingaphezulu Ezikhuhliwe Embonini Ye-Margarine
Ama-Scraped Surface Heat Exchangers (SSHE) angamadivayisi okudlulisa ukushisa asebenza kahle kakhulu athuthukisa ukudluliselwa kokushisa ngokuklwebha ngomshini. Afaneleka kakhulu uketshezi olunamandla kakhulu, olukwazi ukukristala kalula noma oluqukethe izinhlayiya. Okulandelayo ukuhlaziywa kwesimiso sawo sokusebenza kanye nezicelo ezithile embonini ye-margarine:
I. Isimiso Sokusebenza Sezishintshi Zokushisa Ezingaphezulu Ezikhuhliwe
1. Isakhiwo Esiyinhloko
o Isilinda esinejakethi: Ingqimba yangaphandle ihlinzekwa ngezinto zokushisa/zokupholisa (ezifana nomusi, amanzi abandayo noma uwoyela wokudlulisa ukushisa).
o Umphini ojikelezayo kanye nesikrwela: Ngaphakathi, kukhona umphini ojikelezayo onezikrwela eziningi eziguquguqukayo noma eziqinile ezinamathiselwe, ezinamathela eduze odongeni lwangaphakathi lwesilinda.
o Iyunithi yokushayela: Injini ishayela umgodi ukuze ujikeleze ngesivinini esikhulu (ngokuvamile i-100-500 rpm).
2. Inqubo Yokusebenza
o Umphumela wokuklwebha: Ama-scraper aqhubeka nokuklwebha izinto odongeni lwangaphakathi, evimbela ukungcoliswa noma ukwakheka kwekristalu, futhi ngasikhathi sinye aphoqelele ukuvuselelwa kwengqimba yomngcele ebusweni bokudlulisa ukushisa, okwandisa kakhulu i-coefficient yokudlulisa ukushisa (kufika ku-5-10 izikhathi kune-tube heat exchangers yendabuko).
o Umsebenzi wokuxuba: Izikrufu ezijikelezayo ziveza imiphumela yokucheba nokuxubha ezintweni, zikhuthaza izinga lokushisa elifanayo kanye nokwakheka.
o Ukulawula ukushintsha kwesigaba: Ngokulungisa ngokunembile izinga lokushisa lejakethi kanye nesivinini sokuklwebha, ukupholisa okusheshayo, ukwakheka kwekristalu noma ukuhlanganiswa kwezinto kungafinyelelwa (njengokulawula ukwakheka kwekristalu yamafutha ku-margarine).
3. Izinzuzo kanye nezici
o Ifanelekela ukuqina okuphezulu (kufika ku-10^5 cP), uketshezi olungeyona i-Newtonian noma izinto eziqukethe izinhlayiya eziqinile.
o Igwema ukushisa ngokweqile noma izindawo ezibandayo, iqinisekisa ikhwalithi yomkhiqizo efanayo.
o Ingakwazi ukusingatha izinto ezibucayi ezivame ukubiliswa noma ukuqiniswa.
II. Ukusetshenziswa Ekukhiqizweni Kwe-Margarine
1. Indima Ebalulekile Enqubweni Yokukhiqiza
Ukukhiqizwa kwe-margarine kudinga ukuhlanganiswa kwamafutha kanye nezigaba zamanzi (ubisi, usawoti, ama-emulsifier, njll.) kulandelwe ukupholisa okusheshayo kanye nokwakheka kwekristalu. I-scraped surface heat exchanger iyithuluzi eliyinhloko, elisetshenziswa kakhulu ku:
o Ukupholisa kanye nokwenza ama-emulsion abe kristalu: Ukupholisa ngokushesha i-emulsion exubile (cishe ngo-40-50°C) kuya ku-10-20°C ukuze kubangele ukwakheka kwesakhiwo sekristalu esizinzile se-β' (okubalulekile ukuze kube nokuthungwa okubushelelezi).
o Ukucubungula i-nucleation: Amandla okusika ama-scraper aphula amakristalu amakhulu, akha inethiwekhi yamafutha encane nefanayo, okuthuthukisa ukunwebeka kokhilimu.
o Ukwelashwa ngokubulala amagciwane: Kwezinye izinqubo, amajakethi okushisa okuphezulu asetshenziselwa ukubulala amagciwane isikhathi esifushane (isb., 85°C imizuzwana eyi-15).
2. Ukuzivumelanisa Nezimo Kwemboni
o Ukulawula izinga lokushisa okunembile: Ukwakheka kwama-crystallization kwamafutha kuyazwela ekushiseni (isb., uwoyela wesundu udinga ukulawulwa ku-20-25°C), futhi umshini wokushintshanisa ukushisa okhuhliwe ungalondoloza ngokunembile izinga lokushisa.
o Ukuvimbela ukuhlukaniswa kwesigaba: Amandla aphezulu okusika aqinisekisa ukusabalala okufanayo kwesigaba samanzi, okugwema ukuhlukaniswa kwamafutha namanzi.
o Ukuphatha izinto ezinamafutha amaningi: I-Margarine iqukethe amafutha angu-70-80%, futhi ukwakheka kwesikrufu kunqoba inkinga yokuvaleka kwemishini yokushintshanisa ukushisa yendabuko.
3. Amapharamitha Emishini Ejwayelekile
o Isilinganiso sokudlulisa ukushisa: 500-1500 W/(m²·K) (kuye ngokuthi izinto zibukeka kanjani).
o Izinga lokupholisa: Kufika ku-30°C/ngomzuzu (okubalulekile ekwenzeni ama-fat crystallization kinetics).
o Umthamo: Imishini yezimboni ingaphatha amathani ayi-1-10 ngehora.
III. Ukuqhathaniswa nezinye i-Heat Exchangers
Ukusetshenziswa ku-margarine ★★★★★ ★★☆ ★☆☆
| Izici | Isishintshi Sokushisa Esingaphezulu Esikhuhliwe | I-Shell ne-Tube Heat Exchanger | I-Plate Heat Exchanger |
| I-viscosity esebenzayo | Okuphezulu (≤10^5 cP) | Okumaphakathi-okuphansi (≤10^3 cP) | Okuphansi (≤10^2 cP) |
| Ingozi yokungcola | Kuphansi kakhulu (ukuzihlanza ngokuziklwebha) | Phezulu | Okumaphakathi |
| Umphumela wokugunda | Kuqinile (kuyalawuleka) | Kubuthakathaka | Kubuthakathaka |
IV. Izitayela Zokuthuthukiswa Kwemboni
• Ukuthuthukisa amandla: Sebenzisa ama-motor aguquguqukayo ukuze ulungise isivinini sokuskrapha, uhambisane nezidingo ezahlukene zefomula (isb., ukugunda okuphezulu kokhilimu onamafutha aphansi).
• Ukulawula okuhlakaniphile: Hlanganisa izinzwa zokushisa-ukuthamba ukuze ulungise izinga lokupholisa kanye namandla okusika ngesikhathi sangempela. • Umklamo wenhlanzeko: Ngokuhambisana nezindinganiso ze-EHEDG/3A, uhlelo lwe-CIP (Clean-In-Place) lunciphisa isikhathi sokungasebenzi.
I-scraper heat exchanger, enamakhono ayo okudlulisa ukushisa nokusebenza kahle kakhulu, isibe yithuluzi elibalulekile embonini ye-margarine. Ikakhulukazi ngaphansi komkhuba wokufuna imikhiqizo enamafutha aphansi kanye nemikhiqizo esebenza kahle, izinzuzo zayo zokucubungula eziqondile zizogqanyiswa kakhulu.
Isikhathi sokuthunyelwe: Julayi-02-2025