Ukusetyenziswa kweeScraped Surface Heat Exchangers kwiShishini leMargarine
IiScraped Surface Heat Exchangers (SSHE) zizixhobo zokudlulisa ubushushu ezisebenza kakuhle kakhulu eziphucula ukudluliselwa kobushushu ngokukrala ngoomatshini. Zifanelekile ngokukodwa kwiincindi ezixineneyo, ezikwaziyo ukukrwada okanye eziqulathe amasuntswana. Oku kulandelayo luhlalutyo lomgaqo wazo wokusebenza kunye nokusetyenziswa kwazo kwishishini lemargarine:
I. Umgaqo wokusebenza wee-Scraped Heat Exchangers
1. Ulwakhiwo oluphambili
o Isilinda efakwe ijakethi: Umaleko ongaphandle unee-media zokufudumeza/zokupholisa (ezifana nomphunga, amanzi abandayo okanye ioyile yokudlulisa ubushushu).
o Umngxuma ojikelezayo kunye nomkrwela: Ngaphakathi, kukho umngxuma ojikelezayo onezikrwela ezininzi eziguquguqukayo okanye eziqinileyo ezinamatheleyo, ezinamathela ngokusondeleyo eludongeni lwangaphakathi lwesilinda.
o Iyunithi yokuqhuba: Injini iqhuba ishaft ukuba ijikeleze ngesantya esiphezulu (ngesiqhelo yi-100-500 rpm).
2. Inkqubo Yokusebenza
o Isiphumo sokukrwela: Izikrwela zihlala zikrwela izinto eludongeni olungaphakathi, zithintela ukungcoliswa okanye ukukrwela, kwaye ngaxeshanye zinyanzelisa ukuhlaziywa komaleko womda kumphezulu wokudlulisa ubushushu, zinyusa kakhulu i-coefficient yokudlulisa ubushushu (ukuya kuthi ga kwi-5-10 ye-tube heat exchangers yendabuko).
o Umsebenzi wokuxuba: Izikrweqe ezijikelezayo zisebenza ngemiphumo yokucheba nokuxubha kwizinto, zikhuthaza ubushushu obufanayo kunye nokwakheka kwazo.
o Ulawulo lotshintsho lwesigaba: Ngokulungisa ngokuchanekileyo ubushushu bejakethi kunye nesantya sokukrazula, ukupholisa ngokukhawuleza, ukwenziwa kwekristale okanye ukuhlanganiswa kwezinto ezisetyenzisiweyo kunokufezekiswa (njengokulawula ukwenziwa kwekristale yamafutha kwimargarine).
3. Iingenelo kunye neempawu
o Ifanelekile kwi-high-viscosity (ukuya kuthi ga kwi-10^5 cP), ulwelo olungelulo ulwelo lwaseNewtonian okanye izinto eziqulethe amasuntswana aqinileyo.
o Iphepha ubushushu obuphezulu okanye iindawo ezibandayo, iqinisekisa umgangatho ofanayo wemveliso.
o Iyakwazi ukuphatha izinto ezibuthathaka ezinokuba ne-coking okanye i-crystallization.
II. Ukusetyenziswa kwiMveliso yeMargarine
1. Indima ephambili kwiNkqubo yoMveliso
Ukuveliswa kwemargarine kufuna ukuhlanganiswa kweeoyile kunye namanzi (ubisi, ityuwa, ii-emulsifiers, njl.njl.) kulandele ukupholisa ngokukhawuleza kunye ne-crystallization. I-scraped surface heat exchanger sisixhobo esiphambili, esisetyenziswa kakhulu kwi:
o Ukuphola kunye nokwenza i-crystallization ye-emulsions ibe yikristale: Ukuphola ngokukhawuleza i-emulsion exutyiweyo (malunga ne-40-50°C) ukuya kwi-10-20°C ukuze kukhuthazwe ukwakheka kwesakhiwo sekristale esizinzileyo se-β' (esibalulekileyo ukuze kubekho ubume obuthambileyo).
o Ukucubungula iinucleation: Amandla okucheba ezi scrapers aqhekeza iikristale ezinkulu, enze uthungelwano lwamafutha olucolekileyo nolulinganayo, nto leyo ephucula ulwandiso lwekhrimu.
o Unyango lokubulala iintsholongwane: Kwezinye iinkqubo, iijakethi ezinobushushu obuphezulu zisetyenziselwa ukubulala iintsholongwane ixesha elifutshane (umz., 85°C imizuzwana eli-15).
2. Ukuguquguquka kweShishini
o Ulawulo oluchanekileyo lobushushu: Ukwakheka kwekristale yamafutha kuthintela ubushushu (umz., ioyile yesundu kufuneka ilawulwe kwi-20-25°C), kwaye isixhobo sokutshintsha ubushushu esikrweliweyo sinokugcina ubushushu busemgangathweni.
o Ukuthintela ukwahlukana kwesigaba: Amandla aphezulu okucheba aqinisekisa ukusasazeka okufanayo kwesigaba samanzi, kuthintelwe ukwahlukana kweoyile namanzi.
o Ukuphatha izinto ezinamafutha amaninzi: I-margarine iqulethe amafutha angama-70-80%, kwaye uyilo lwe-scraper luyayisombulula ingxaki yokuvaleka kwezixhobo zokutshintsha ubushushu zemveli.
3. Iiparamitha zezixhobo eziqhelekileyo
o I-coefficient yokudlulisa ubushushu: 500-1500 W/(m²·K) (kuxhomekeke kwi-viscosity yezinto).
o Izinga lokuphola: Ukuya kuthi ga kwi-30°C/ngomzuzu (ibalulekile kwi-kinetics ye-fat crystallization).
o Umthamo: Izixhobo ezisetyenziswa kwimizi-mveliso zingathwala iitoni ezili-1 ukuya kwezili-10 ngeyure.
III. Uthelekiso nezinye ii-Heat Exchangers
Ukusetyenziswa kwi-margarine ★★★★★ ★★☆ ★☆☆
| Iimpawu | Umphezulu okhuhliweyo wobushushu | I-Shell kunye ne-Tube Heat Exchanger | Ipleyiti yokutshintsha ubushushu |
| I-viscosity esebenzayo | Phezulu (≤10^5 cP) | Iphakathi-ephantsi (≤10^3 cP) | Iphantsi (≤10^2 cP) |
| Umngcipheko wokungcola | Iphantsi kakhulu (ukuzicoca ngokuzikrwela) | Phezulu | Iphakathi |
| Isiphumo sokucheba | Yomelele (iyalawuleka) | Ubuthathaka | Ubuthathaka |
IV. Iindlela zoPhuhliso lweShishini
• Ukuphucula amandla: Sebenzisa iimoto ezitshintshatshintshayo ukuze ulungise isantya sokukrazula, ulungelelanise iimfuno ezahlukeneyo zefomula (umz., ukucheba okuphezulu kwikhrimu enamafutha aphantsi).
• Ulawulo olukrelekrele: Hlanganisa izinzwa zobushushu-ukuxinana ukuze ulungise izinga lokuphola kunye namandla okucheba ngexesha langempela. • Uyilo lococeko: Ngokuhambelana nemigangatho ye-EHEDG/3A, inkqubo ye-CIP (Clean-In-Place) inciphisa ixesha lokungasebenzi.
Isixhobo sokutshintshiselana ubushushu esikrazulayo, esikwaziyo ukudlulisa ubushushu kunye nokukwazi ukuxuba, siye saba sisixhobo esibalulekileyo kwishishini le-margarine. Ingakumbi phantsi komkhwa wokulandela iimveliso ezinamafutha aphantsi kunye nezisebenza kakhulu, iingenelo zaso zokucubungula ziya kuboniswa ngakumbi.
Ixesha leposi: Julayi-02-2025