Chidule: Kusungunuka kwa maselo, yomwe imadziwikanso kuti distillation ya njira yayifupi, ndi njira yosalinganiza yopatulira zinthu pansi pa vacuum yayikulu kutengera kusiyana kwa njira yapakati yaulere ya kayendedwe ka mamolekyulu a zinthu zosiyanasiyana. Ukadaulo wa distillation ya mamolekyulu uli ndi digiri yapamwamba ya vacuum, kutentha kochepa kwa distillation, nthawi yochepa yotenthetsera, komanso magwiridwe antchito apamwamba opatulira. Chifukwa chake, imatha kuchepetsa kwambiri mtengo wopatulira zinthu zotentha kwambiri, kuteteza mtundu wa zinthu zomwe zimatentha kwambiri, ndipo ndizoyenera kulekanitsa ndi kuyeretsa zinthu zotentha kwambiri, zomwe zimatentha kwambiri, komanso zomwe zimasungunuka mosavuta. Pakadali pano, ukadaulo wa distillation ya mamolekyulu wagwiritsidwa ntchito m'mafakitale monga petrochemical, mankhwala abwino, ndi chakudya. Pepalali likusanthula momwe ukadaulo wa distillation wa mamolekyulu umagwiritsidwira ntchito poyeretsa ma diglycerides.
Mawu Ofunika: Ukadaulo Wothira Mamolekyulu; diglycerides; kugwiritsa ntchito kuyeretsa
Pakupanga mankhwala, zinthu zambiri zimapezeka mu mawonekedwe a zosakaniza. Kuti zikwaniritse zofunikira pakupanga ndi kugwiritsa ntchito, zinthuzi ziyenera kulekanitsidwa kuti zikhale zoyera. Pakati pa njira zosiyanasiyana zolekanitsira, kusungunula ndi njira yodziwika bwino, ndipo ukadaulo wosungunula mamolekyu umapereka zabwino zambiri. Pakadali pano, chifukwa cha kupita patsogolo mwachangu kwa makampani opanga mankhwala, gawoli layamba kuyika patsogolo kwambiri pakupita patsogolo kwaukadaulo ndi kupita patsogolo. Pogwiritsa ntchito ukadaulo wosungunula mamolekyu, zinthu monga njira yopangira ndi zinthu zomaliza ziyenera kugwiritsidwa ntchito ndikuchitidwa kuchokera ku malingaliro obiriwira, motero kupanga chitukuko cha mankhwala obiriwira kukhala chenicheni.
I.Chidule cha Teknoloji Yosungunula Ma Molecular
1. Mfundo Zoyambira za Ukadaulo Wothira Mamolekyu
Ukadaulo wothira mamolekyulu ndi njira yatsopano yopangira mankhwala yomwe yakopa chidwi chachikulu mdziko muno komanso padziko lonse lapansi. Mbali yake yapadera ili mu kukhala ukadaulo wothira mamolekyulu, womwe ndi wosiyana kwambiri ndi njira zachikhalidwe zothira mamolekyulu, ndipo ndi wapamwamba kwambiri kuposa kuthira mamolekyulu achikhalidwe pankhani ya luso laukadaulo komanso magwiridwe antchito olekanitsa. Mphamvu yoyendetsera kulekanitsa muukadaulo wothira mamolekyulu imachokera ku kuyenda kwa mamolekyulu azinthu zosiyanasiyana komanso kusiyana komwe kumachitika m'njira zawo zapakati. Pamene kupanikizika mu cholekanitsa kumachepa ndipo kutentha kumakwera, kuyenda kwa mamolekyulu kumathamanga, zomwe zimapangitsa kuti m'mimba mwake muchepetse. Pamene cholekanitsa chikugwira ntchito, kusiyana kwa m'mimba mwake mwa mamolekyulu kumakulirakulira, zomwe zimapangitsa kuti zinthuzo zilekanitsidwe. Chipangizo cholekanitsa chimaphatikizapo evaporator, mbale zotenthetsera, mbale zoziziritsa, ndi zina zotero. Pansi pa malo okhala ndi vacuum yambiri, kugwira ntchito nthawi imodzi kwa mbale zotenthetsera ndi mbale zoziziritsa kumapangitsa kuti mamolekyulu omwe ali mumadzi osakanizidwa amadzimadzi azilekanitsidwa ndikuyenda kupita ku mbale zoziziritsa mamolekyulu, potsiriza zimabweretsa kulekanitsidwa kopambana.
2. Ukadaulo Wofunika Kwambiri pa Kusungunuka kwa Mamolekyulu
Kuti ukadaulo wothira mamolekyulu ugwire ntchito yofunika kwambiri popanga mankhwala obiriwira, ndikofunikira kusanthula bwino ukadaulo wofunikira womwe umagwiritsidwa ntchito pothira mamolekyulu. Kugwiritsa ntchito ukadaulowu kokha ndiko komwe kungapangitse zotsatira zabwino. Njira zingapo zazikulu zaukadaulo zimagwiritsidwa ntchito pothira mamolekyulu. Choyamba ndi ukadaulo wothira mamolekyulu ambiri. Ichi ndiye chinsinsi cha kukhazikitsa bwino njira yonse yothira mamolekyulu. Kugwiritsa ntchito ukadaulo wothira mamolekyulu ambiri kungapangitse malo otayira mamolekyulu kuti azitha kuthira mamolekyulu, motero kuonetsetsa kuti njira zothira mamolekyulu zikugwira ntchito bwino. Chothira mamolekyulu chothira mamolekyulu ndi gawo lofunikira la ukadaulowu. Pogwiritsa ntchito ukadaulo wothira mamolekyulu, ndikofunikira kuonetsetsa kuti kapangidwe ka chothira mamolekyulu kakukwaniritsa zofunikira popanga, kuti zitsimikizire kulekanitsa zinthu bwino. Kuphatikiza apo, pali njira yonyamulira zinthu. Izi zimagwira ntchito ngati mtsempha wogwirira ntchito ukadaulo wothira mamolekyulu. Dongosololi likufunika kukonzedwanso kuti liwonjezere kudalirika kwa ukadaulo wothira mamolekyulu ndikuwonetsetsa kuti likupita patsogolo.
II. Mfundo ndi Makhalidwe a Molecular Distillation
1. Mfundo Zoyambira
Kuyeretsedwa kwachibadwa kumachokera pa kulinganiza kwa nthunzi ndi madzi, kuphatikiza kusiyana kwa kusasinthasintha pakati pa zigawo, ndipo kulekanitsidwa kumachitika pa kutentha kwa kutentha kwa chisakanizocho. Kumbali ina, kuyeretsedwa kwa mamolekyulu kumapatukana pakati pa zinthu pansi pa vacuum yayikulu kutengera kusiyana kwa njira yapakati yaulere ya kayendedwe ka mamolekyulu a zinthu zosiyanasiyana. Kuyeretsedwa kwa mamolekyulu ndi njira yoyeretsedwa ya vacuum yayikulu momwe kulekanitsidwa kumachitika pansi pa kuwiritsa kwa zinthuzo, zomwe zimapangitsa kuti ikhale njira yoyeretsedwa yosagwirizana konse. Pakugwira ntchito kwa kuyeretsedwa kwa mamolekyulu, mamolekyu a zigawo zowala amakhala ndi njira yayikulu yapakati, pomwe mamolekyu a zigawo zolemera amakhala ndi njira yaying'ono yapakati. Ngati pamwamba pa kuzizira payikidwa patali ndi pamwamba pa nthunzi yomwe ili yocheperapo kuposa njira yapakati ya mamolekyu a zigawo zowala koma yayikulu kuposa ya mamolekyu olemera a zigawo, mamolekyu a zigawo zowala amagwera pamwamba pa kuzizira ndi kufupika. Izi zimasokoneza kulinganiza kwa mphamvu kwa kayendedwe ka mamolekyulu awo, zomwe zimapangitsa kuti azituluka mosalekeza. Pakadali pano, mamolekyu olemera a zigawo, osatha kufika pamwamba pa kuzizira, amabwerera pamwamba pamadzimadzi oyamba ndikuyandikira mwachangu kulinganiza kwamphamvu. Motero, zigawo zosiyanasiyana mu chisakanizocho zimalekanitsidwa.
2. Ubwino ndi Zofooka za Ukadaulo wa Molecular Distillation
Kutengera mfundo zoyendetsera ntchito zaukadaulo wa distillation wa mamolekyulu, makhalidwe angapo akhoza kufotokozedwa mwachidule. Choyamba, mosiyana ndi distillation yachizolowezi, njira yolekanitsira distillation ya mamolekyulu siifuna malo otentha kwambiri. Izi zili choncho chifukwa distillation ya mamolekyulu imadalira kwambiri kayendetsedwe ka mamolekyulu kuti ipatulidwe, osati malo otentha. Chifukwa chake, pakugwira ntchito moyenera, kutentha kuyenera kusungidwa pansi pa malo otentha. Poyerekeza ndi distillation yachizolowezi, distillation ya mamolekyulu imafuna kupanikizika kochepa, ndipo kuchepetsa kupanikizika kumabweretsa kuchepa kwa malo otentha. Popeza kutentha komwe kumafunikira ndi ukadaulo uwu sikuyenera kufika pamalo otentha, kutentha kwa distillation ya mamolekyulu kumakhala kotsika kwambiri kuposa kwa distillation yachizolowezi. Distillation ya mamolekyulu ndi njira yosalinganiza distillation yokhala ndi zabwino zingapo. Choyamba ndi kutentha kochepa kogwirira ntchito. Mu distillation ya mamolekyulu, ngati mamolekyu a nthunzi amathawa kuchokera mu gawo lamadzimadzi, kulekanitsidwa kumatha kuchitika popanda kufika pamalo otentha. Ubwino wina ndi kupanikizika kochepa kogwirira ntchito. Kuti mupeze njira yayikulu yokwanira yaulere, kupanikizika kwa distillation kuyenera kuchepetsedwa. Chifukwa zida zosungunulira mamolekyulu ndizosavuta ndipo kutsika kwamkati kumakhala kochepa, vacuum yayikulu ikhoza kupezeka. Chotsatira ndi nthawi yochepa yotenthetsera. Kutengera mfundo ya kusungunuka kwa mamolekyulu, mamolekyulu owala omwe amatuluka pamwamba pa nthunzi amafika pamwamba pa nthunzi popanda kugundana, zomwe zimapangitsa kuti kutentha kukhale kochepa kwambiri. Kuphatikiza apo, mphamvu yolekanitsa ndi yayikulu. Nthawi yomweyo, ntchito yosungunuka kwa mamolekyulu iyenera kukwaniritsa zinthu zingapo. Choyamba, payenera kukhala kusiyana kwina pakati pa njira zaulere za mamolekyulu owala ndi olemera. Chachiwiri, mtunda pakati pa pamwamba pa nthunzi ndi pamwamba pa nthunzi uyenera kukhala wocheperapo kuposa njira yaulere ya mamolekyulu owala. Poyerekeza ndi kusungunuka kwachizolowezi, kusungunuka kwa mamolekyulu kuli ndi zabwino zambiri, komanso kuli ndi zoletsa zina. Chifukwa kusungunuka kwa mamolekyulu kumafuna kulekanitsidwa pansi pa vacuum yayikulu, kumafuna zida zodula komanso zofunikira kwambiri pakupanga ndi ukadaulo.
III. Kupanga kwa Enzymatic kwa Diglycerides
1. Kuyezetsa magazi
Kuyesa kumagwiritsa ntchito glycerol ndi ma free fatty acids ngati zopangira ndipo lipase ngati chothandizira kupanga DAG (diglycerides). Panthawi ya esterification, zinthu zina monga TAG (triglycerides) ndi MAG (monoglycerides) zimapangidwa. Madzi omwe amapangidwa mu esterification reaction samangolepheretsa kupita patsogolo kwa reaction komanso amachepetsa ntchito ya lipase. Chifukwa chake, kuwongolera kuchuluka kwa madzi oyenera ndikofunikira. Nthawi zambiri, kuchuluka kwa ma free fatty acids omwe amaperekedwa ndi kwakukulu kuposa kwa glycerol kuti apereke ma free fatty acids okwanira kuti ayesedwe ndi glycerol, koma sayenera kukhala ochuluka, apo ayi zingakhale zovuta kuchotsa kumapeto kwa reaction kapena kungakhudze ntchito ya lipase chifukwa cha acidity yambiri. Njira yoyesera kulunjika ili ndi zabwino monga nthawi yochepa yochitira, kuyera kwa zinthu zambiri, komanso njira zosavuta zochitira. Komabe, chifukwa ma free fatty acids ndi okwera mtengo kwambiri, mtengo wa njira yoyesera kulunjika ndi wokwera kwambiri.
2. Kuchuluka kwa Hydrolysis
Njira yogwiritsira ntchito hydrolysis pang'ono imaphatikizapo kuchita TAG ndi madzi ndi enzyme kuti mupeze chisakanizo cha DAG, MAG, ndi FFA (mafuta osaphika). DAG yoyera kwambiri imapezeka pochotsa madzi, MAG, FFA, ndi TAG yotsalira kudzera mu distillation ya molecular. Njira yogwiritsira ntchito hydrolysis pang'ono ili ndi njira yosavuta yochitira komanso yotsika mtengo. Komabe, njirayi imayambitsa madzi, zomwe zingachepetse ubwino wa mafuta, makamaka mafuta okhala ndi mafuta ambiri a polyunsaturated acids. Asanayambe kuchitapo kanthu, kusungunuka kwa madzi muzinthu zamafuta kumakhudza kaye liwiro la kuchitapo kanthu. Chifukwa chake, zosungunulira zachilengedwe kapena ma surfactants nthawi zambiri amawonjezeredwa ku gawo la hydrolysis reaction kuti awonjezere kusungunuka kwa ma reactants ndikuwonjezera zokolola za DAG.
3. Glycerolysis
Glycerolysis ndiyo njira yotsika mtengo kwambiri yopangira DAG. Enzymatic glycerolysis imagwiritsa ntchito TAG ndi glycerol ngati zinthu zopangira pansi pa catalysis ya lipase kuti ipange DAG. Panthawi ya glycerolysis, glycerol imawonjezedwa pang'onopang'ono kuti glycerol isalowe pamalo omwe lipase ikugwira ntchito ndikukhudza ntchito yake yothandiza. Mofanana ndi njira ya hydrolysis yochepa, ma surfactants a chakudya nthawi zina amawonjezedwa ku glycerolysis reaction kuti athetse vuto la kusasinthika pakati pa glycerol ndi mafuta/mafuta.
4. Kusintha kwa ma ester
Njira yosinthira ma esterification imagwiritsa ntchito TAG ndi MAG ngati zinthu zopangira pansi pa catalysis ya lipase kuti ipange DAG. Njira yosinthira ma esterification imaphatikizapo magawo awiri: choyamba, hydrolysis reaction ya TAG, kenako esterification reaction pakati pa lipase kuchokera ku hydrolyzed TAG ndi MAG. Kugwirizana pakati pa magawo awiri a hydrolysis ndi esterification ndikofunikira komanso kovuta. Kuphatikiza apo, mtengo wokwera wa MAG ndi wosayenera pakugwiritsa ntchito mafakitale.
IV. Kugwiritsa Ntchito Ukadaulo wa Molecular Distillation Poyeretsa Diglycerides
DAG (diglycerides) ndi mtundu watsopano wa mafuta abwino, koma kuchuluka kwake mu mafuta achilengedwe ndi kochepa kwambiri. Komanso, mafuta osapangidwa a diglycerides opangidwa mwaluso alinso ndi zinthu zina zambiri zopangidwa ndi zinthu zina. Chifukwa chake, kuyeretsa ma diglycerides ndikofunikira kwambiri. Ukadaulo wothira mamolekyulu ndi umodzi mwa ukadaulo womwe umagwiritsidwa ntchito kwambiri pakuyeretsa ma diglycerides. Ndi ukadaulo watsopano komanso wothandiza wolekanitsa ndi kuyeretsa, womwe umakwaniritsa cholinga cholekanitsa ndi kuyeretsa pogwiritsa ntchito kusiyana kwa njira yapakati yomasuka ya kayendedwe ka mamolekyulu a zinthu zosiyanasiyana. Uli ndi kutentha kochepa kothira, nthawi yochepa yotenthetsera, magwiridwe antchito apamwamba olekanitsa, osaipitsa, komanso kugwiritsa ntchito mosiyanasiyana. Ndiwoyenera kwambiri kulekanitsa ndi kuyeretsa zinthu zachilengedwe zokhala ndi malo otentha kwambiri, kukhudzidwa ndi kutentha, komanso kusungunuka mosavuta. Njirayi ingapewenso kuwonongeka kwa kutentha kwa zinthu zomwe zimakhudzidwa ndi kutentha komanso zomwe zimasungunuka mosavuta. Ingagwiritsidwenso ntchito pazinthu zosiyana zomwe zimakhala ndi malo otentha kwambiri kapena kusiyana pang'ono m'malo otentha. Ili ndi mwayi waukulu wogwiritsa ntchito pakuyeretsa ma diglycerides. Komabe, palinso mavuto ena pakugwiritsa ntchito ukadaulo wothira mamolekyulu pakuyeretsa ma diglycerides. Mwachitsanzo, zida zoyeretsera mamolekyulu zimafuna kutseka bwino kwambiri ndipo ndizokwera mtengo. Pakadali pano, palibe ukadaulo wofanana womwe ungathetse mavutowa, ndipo ndikofunikira kuphatikiza mitundu yatsopano ya njira zaukadaulo ndi ukadaulo woyeretsera mamolekyulu.
Mwachidule, kudalirika kwa ukadaulo wothira mamolekyulu kwawonetsedwa mokwanira m'machitidwe, ndipo kungalimbikitse chitukuko ndi kupita patsogolo kwa uinjiniya wa mankhwala obiriwira. Popeza ukadaulo wothira mamolekyulu umagwirizana kwambiri ndi chitukuko cha ukadaulo wogwirizana, China iyenera kulimbitsa kusinthana kwakukulu kwaukadaulo ndi mgwirizano pakati pa mabizinesi, mabungwe, ndi mayunivesite, kuti ikhazikitse maziko okonzanso magawo a njira yogwiritsira ntchito mamolekyulu m'mafakitale. Ukadaulo wothira mamolekyulu uli ndi ubwino wapadera pakulekanitsa ndi kuyeretsa mankhwala achilengedwe. Wakhala ukugwiritsidwa ntchito kwambiri pakulekanitsa ndi kuyeretsa mankhwala achilengedwe.
Ngati muli ndi mafunso okhudza ukadaulo wa mamolekyulu kapena magawo ena ofanana, kapena ngati mukufuna kudziwa zambiri, chonde musazengereze kuyankha.Lumikizanani nafe gulu la akatswiri. Tadzipereka kukupatsani ntchito yabwino kwambiri komansoMayankho Otembenukira.
Nthawi yotumizira: Epulo-16-2026
