Supercritical carbon dioxide extraction thiab subcritical extraction yog ob txoj kev sib txawv ntawm lub cev, uas muaj lawv tus kheej cov yam ntxwv hauv extracting cumin roj.
kev cai
Supercritical carbon dioxide extraction technology siv cov khoom ntawm cov pa roj carbon dioxide nyob rau hauv lub xeev supercritical (kev kub siab thiab kub siab), qhov twg carbon dioxide muaj qhov ntom ntawm cov kua thiab diffusivity ntawm cov roj, kom zoo tshem tawm cov khoom nquag ntawm cov khoom cog.
Subcritical extraction thev naus laus zis yog cov txheej txheem rho tawm uas siv cov kua dej subcritical (xws li butane, propane, thiab lwm yam) ntawm qhov kub thiab txias hauv qab nws qhov kub thiab txias tab sis siab tshaj qhov kub kub.
txheej txheem txheej txheem
Supercritical carbon dioxide rho tawm:
Nruab Nrab: Siv cov pa roj carbon dioxide ua extractant.
Siab: Lub siab ua haujlwm feem ntau yog nyob nruab nrab ntawm 20-50MPa.
Kub: Kev khiav hauj lwm kub feem ntau yog siab tshaj 40 degree.
Subcritical extraction:
Nruab nrab: Feem ntau siv butane, propane, dimethyl ether thiab lwm yam tsib cov kuab tshuaj.
Siab: Kev khiav hauj lwm siab yog qis, feem ntau ntawm 0.3-0.5MPa.
Kub: Kev khiav hauj lwm kub yog chav tsev kub los yog qis dua.
Raws li qhov zoo
Qhov zoo ntawm supercritical carbon dioxide extraction muaj xws li kev ua haujlwm siab extraction, tsis muaj kuab lom residue, muaj peev xwm khaws cov khoom kub-rhiab heev, thiab kev tiv thaiv ib puag ncig zoo.
Nyob rau hauv cov txheej txheem ntawm extracting cumin roj, supercritical carbon dioxide extraction yuav ua tau nyob ze rau ntawm chav tsev kub, zoo tiv thaiv oxidation thiab khiav ntawm tshav kub-rhiab tshuaj, thiab tswj tag nrho cov Cheebtsam ntawm cov tshuaj nroj tsuag. Nws tuaj yeem tau txais txiaj ntsig ntau dua thiab muaj txiaj ntsig zoo dua, thiab nws cov muaj pes tsawg leeg yog ze rau lub xeev ntuj tshaj li txoj kev siv tshuaj tua kab.
Qhov zoo ntawm subcritical extraction muaj xws li tsis tshua muaj kev khiav hauj lwm siab, cov txheej txheem yooj yim, tsawg zog noj, tsawg peev, thiab yooj yim industrial loj-scale ntau lawm.
Nyob rau hauv lub extraction ntawm cumin roj, nws muaj peev xwm daws tau qhov tsis xws luag ntawm me me ntim, siab nqi, loj zog noj thiab nyuaj loj-scale industrial zus tau tej cov supercritical extraction khoom, thaum tswj siab extraction efficiency thiab cov khoom zoo. Piv nrog supercritical carbon dioxide extraction, cov khoom siv subcritical extraction tau qis dua thiab siv zog tsawg dua, thiab tsim nyog rau kev tsim khoom loj.
Cov kev xav tau zoo, cov nqi tsim khoom, cov cuab yeej siv peev, kev siv hluav taws xob thiab kev tiv thaiv ib puag ncig ntawm cumin roj yuav tsum raug txiav txim siab thaum xaiv cov pa roj carbon dioxide supercritical thiab subcritical extraction txoj kev. Supercritical carbon dioxide extraction yog tsim rau lub sij hawm uas yuav tsum tau siab ntawm cov khoom zoo, thaum subcritical extraction yog haum rau lub sij hawm uas yuav tsum tau siab rau cov nqi thiab ntau lawm efficiency.