Raws li qhov yuav tsum tau ua kom huv huv tseem nce ntxiv hauv kev lag luam xws li cov khoom siv hluav taws xob, cov khoom siv kho mob, thiab cov khoom siv kho qhov muag, cov cuab yeej tu ib txwm siv-xws li ntxuav ntub dej thiab ntxuav ultrasonic- tau ntsib cov kev txwv ntau zuj zus. Supercritical carbon dioxide (sCO₂) tu tshuab, nrog nws cov cim lub cev thiab tshuaj lom neeg, tau tshwm sim los ua ib qho kev daws teeb meem rau kev tu kom huv si. Kab lus no muab cov ntsiab lus tseem ceeb ntawm cov hauv paus ntsiab lus, kev siv tam sim no, thiab cov teeb meem yav tom ntej ntawm sCO₂ tu tshuab.
Cov khoom ntawm Supercritical Carbon Dioxide
Supercritical carbon dioxide yog tsim thaum CO₂ raug rau qhov kub thiab txias siab tshaj nws qhov tseem ceeb (31.1℃thiab 7.38 MPa). Hauv lub xeev no, nws nthuav tawm cov yam ntxwv ntawm ob qho tib si gases thiab kua:
1.Zero nto nro: Ua kom nkag mus rau hauv nanoscale pores (nrog rau qhov sib piv ntau dua 100: 1) yam tsis muaj kev tiv thaiv.
2.High diffusivity: Qhia qhov diffusion coefficient ntawm 10⁻⁴ cm² / s, uas yog kaum npaug ntau dua li cov kua ua kua.
3.Liquid-zoo li solubility: Zoo dissolves organic paug xws li roj thiab resins.
4.Tunable hnyav zog: Kev daws lub zog tuaj yeem hloov kho los ntawm qhov sib txawv ntawm qhov kub thiab txias.
5. Cov txiaj ntsig ib puag ncig thiab kev nyab xeeb: Tsis yog- tshuaj lom, tsis yog- nplaim taws, thiab rov ua dua tshiab.
Ntxuav System thiab txheej txheem khiav
Ib tug raug sCO₂ tu system siv lub modular tsim thiab muaj cov nram qab no cov ntsiab lus tseem ceeb:
1.Fluid supply unit: Liquid CO₂ cia tank thiab cryogenic twj tso kua mis
2.Supercritical cov tshuaj tiv thaiv chamber: Tsim los tiv thaiv kev kub ntxhov (feem ntau ntau dua lossis sib npaug li 20 MPa)
3.Filtration thiab cais chav tsev: Nruab nrog 0.1 μm PTFE membrane lim
4.Recycling system: Achieves a CO₂ recovery rate of >95%
Cov txheej txheem ntxuav:
1.Load qhov chaw yuav tsum tau muab ntxuav rau hauv lub chamber.
2. Pump kua CO₂ rau hauv chamber thiab pressurize nws mus rau supercritical tej yam kev mob.
3.Ua tu raws li qhov kub thiab txias (feem ntau 10-30 feeb).
4.Siv cov kab mob sib kis los ntawm kev depressurization.
5.Recycle CO₂ rov siv dua.
Kev sib tw thiab kev daws teeb meem
1. Cov kev txwv hauv kev tshem tawm cov kab mob
Kev Sib Tw: Kev txwv tsis pub muaj txiaj ntsig hauv kev tshem tawm cov kab mob tsis zoo thiab cov kab mob sib kis.
Kev daws:
Tsim tshwj xeeb surfactants thiab co-cov kuab tshuaj (piv txwv li, ethanol, ethyl acetate).
Ua ke ultrasonic lossis megasonic{0}} pab tu.
2.High -Kev Nyab Xeeb Kev Nyab Xeeb
Kev Sib Tw: Kev ua haujlwm txaus ntshai ntawm kev kub siab (20–30 MPa).
Kev daws:
Siv cov chav ua los ntawm 316L stainless hlau lossis npib tsib xee-raws li alloys.
Siv ntau yam kev ruaj ntseg mechanisms (xws li, dual sensors, tawg discs).
Siv cov qauv tsim kom txo qis qis.
3.Txoj kev ua kom zoo
Kev Sib Tw: Kev ua kom huv huv yog qhov ua tau zoo rau qhov kub thiab txias.
Kev daws:
⑴ Siv siab -PID tswj cov tshuab (± 0.5℃kub,<0.05 MPa pressure).
⑵ Ua haujlwm suav cov dej dynamics (CFD) rau kev ua kom zoo tshaj plaws.
⑶Thov AI-tsav parameter tuning.
Qhov zoo
1.Reduces chemical wastewater tsim los ntawm 95%
2.Zero VOC emissions
3.CO₂ rov ua dua