Miyezo yozunguliraPerekani deta yopitilira yofunikira pakuyeretsa acetophenone mu ntchito zokonzera mafuta onunkhira. Kuyeza nthawi yeniyeni kumathandiza kuzindikira molondola zinyalala za benzene ndi acetyl chloride zomwe zili pansi pa 0.5%, kuthandizira mwachindunji miyezo ya acetophenone yoyera popanga mafuta onunkhira. Kuyankha kwa kachulukidwe kumalola kusintha kokha kwa ma distillation reflux ratios mu 2:1–3:1, kutsimikizira 99.5% ya acetophenone kudzera mu njira zowongolera zolondola.
Kukhazikitsa kuchuluka kwa magawo achilengedwe pakati pa 1.045–1.050 g/cm³ panthawi yopangira oxime kudzera mu dichloromethane extraction kumalepheretsa kupangika kwa oxime hydrolysate, ndikuwonjezera kuchuluka kwa sodium hydroxide kuti zidziwike bwino. Zipangizo zozungulira monga Lonnmeter inline density meters ndi concentration meters nthawi yomweyo zimawonetsa kuchotsedwa kosakwanira ndikupangitsa kuti extractant igwire bwino ntchito, kuchepetsa kutayika kwa zinthu zopangira ndikuchepetsa kukonzanso ntchito.
Kuphatikiza mwachindunji muyeso wa mkati mwa mzere kumasinthasintha zinthu pokhapokha ngati kuchuluka kwa zinthu kukuposa 1.027 g/cm³ ndipo kumachotsa zitsanzo zamanja, zomwe zimathandiza kusakaniza kosalekeza ndi kuphatikiza acetophenone yoyera kwambiri ndi umboni wolembedwa wosonyeza kuti ikutsatira malamulo.
Kupanga kwa Acetophenone Fixative
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Miyezo yozungulirakupereka nzeru zofunika kwambiri pakuyeretsa acetophenone mu ntchito zokonzera mafuta onunkhira. Kuyeza kuchuluka kwa mafuta nthawi yeniyeni kumathandiza kutsatira kwambiri miyezo ya acetophenone, kuthandizira kuzindikira kosalekeza kwa benzene ndi acetyl chloride zosakwana 0.5%. Ogwira ntchito amakonza njira zoyeretsera bwino zinthu ndipo amasinthira zokha ma reflux ratios kuti asunge 99.5% acetophenone. Pakusakaniza ndi kuphatikiza popanga mafuta onunkhira, inline density mita zimatsimikizira kukhazikika kwa organic phase density kufika pa 1.045–1.050 g/cm³, kuletsa mapangidwe a oxime hydrolysate kudzera mu kuzindikira koyambirira kwa reaction endpoint.
AcetophenoneChidule cha Njira Yopangira
Kusungunuka kwa ethylbenzene kumapanga acetophenone, yomwe imayambitsidwa ndi cobalt kapena manganese acetates pa 120–200°C kuti ipange zipatso mpaka 90%. Kupatukana kwa magawo ambiri kumachotsa phenylethane ndi hydroperoxides, kenako kusungunuka kwa magawo molondola kumachotsa acetophenone. Mita ya inline density imayang'anira kuyera kwa distillate, zomwe zimathandiza kusintha kwa reflux ratio nthawi yeniyeni kuti ipitirire ≥99.5% acetophenone, yofunika kwambiri pakugwiritsa ntchito mafuta onunkhira. Kuyankha kwa density kumathandiza kuzindikira kuipitsidwa kwa benzene ndi acetyl chloride—kusunga malire a sub-0.5% ndikofunikira pakuyeretsa acetophenone. Kuwongolera kwa inline kokha kumatsimikizira kuti kuipitsidwa kwa reflux pakati pa 2:1 ndi 3:1, kukonza kuchotsa kuipitsidwa ndikuchepetsa zolakwika pamanja.
Pa nthawi yotulutsa ma oximation, kutulutsa kwa dichloromethane kumalimbitsa kuchuluka kwa organic phase pakati pa 1.045–1.050 g/cm³, komwe kumayendetsedwa mwachindunji pogwiritsa ntchito zida za Lonnmeter inline density. Zenera la density ili limaletsa kupanga oxime hydrolysate ndikuwongolera kuwonjezera kwa sodium hydroxide. Kutsika kwa density kumasonyeza kuti kuchotsa kosakwanira, zomwe zimayambitsa kukhathamiritsa kwa flow rate kolondola kwa extractant kuti pakhale acetophenone yoyera kwambiri. Kuyeza kwa inline kumayendetsa kusakaniza ndi kuphatikizana kolondola, kuthandizira miyezo ya acetophenone purity komanso kupanga fungo labwino.
Zokometsera Zonunkhira
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Mavuto mu Kuyeza Kuchulukana kwa Inline
Kuyeza kwa inline density pakuyeretsa acetophenone kumakumana ndi zovuta zazikulu zaukadaulo komanso magwiridwe antchito:
Kuzindikira zinyalala za benzene ndi acetyl chloride zosakwana 0.5% ndikofunikira kuti zikwaniritse miyezo ya acetophenone purity pogwiritsira ntchito mafuta onunkhira. Kuchepa kwa kachulukidwe kochepera 0.0005 g/cm³ kuyenera kuyang'aniridwa kuti njira zochotsera zinyalala mwachangu komanso kukonza mwachangu ziyenera kuchitidwa.
Njira zoyeretsera zinthu molongosoka zimagwiritsa ntchito mayankho a nthawi yeniyeni kuti zisunge chiŵerengero cholamulidwa cha reflux (2:1–3:1). Kulamulira kolimba kwa zinthu kumaletsa kutayika kwa zinthu zomwe sizili zodziwika bwino komanso zosafunikira. Kusinthasintha kumasonyeza kusiyana kwa chiyero cha acetophenone kapena kusakanizidwa bwino ndi kuphatikizana popanga fungo lonunkhira.
Njira yogwiritsira ntchito oximation imafuna kudziwa bwino komwe kumayambira. Zipangizo zolowera mkati ziyenera kuzindikira kuchuluka kwa kuchuluka kwa ≤0.001 g/cm³/h kuti ziwongolere bwino komanso mwadongosolo kuwonjezera alkali, kupewa sodium hydroxide yambiri mu kapangidwe ka organic.
Kuchotsa dichloromethane kosakwanira kumawoneka ngati kuchepa kwa kuchuluka kwa anthu mu gawo lachilengedwe. Ma Lonnmeter inline density mita amathandizira kukonza kuchuluka kwa madzi otulutsa, kuonetsetsa kuti kuchuluka kwa madzi kumakhazikika pa 1.045–1.050 g/cm³ panthawi yowunikira kapangidwe ka acetophenone oxime.
Kupewa kogwira mtima kwa oxime hydrolysate kumadalira kuzindikira nthawi yeniyeni ya zomwe zimachitika mu njira za mankhwala. Zizindikiro zoyezera mzere nthawi yoti muyimitse chakudya cha alkali musanapange zinthu zina.
Ubwino Wophatikiza Ma Inline Density Meters
Kuwongolera kwa valavu yazinthu zodziyimira pawokha komwe kumalumikizidwa ndi muyeso wa inline density kumaonetsetsa kuti kutuluka kwa madzi kumachitika pamwamba pa 1.027 g/cm³, kuchepetsa kwambiri kutulutsidwa kwa sub-spec. Kuwunika kosalekeza kwa density kumathandiza kuzindikira nthawi yomweyo zinyalala za benzene ndi acetyl chloride pansi pa 0.5%, zomwe zimayambitsa kukonza nthawi yomweyo. Ndemanga yeniyeni imakonza ma reflux a distillation pakati pa 2:1 ndi 3:1, ndikuwonjezera phindu la acetophenone pamwamba pa 99.5% pomwe kumachepetsa zinyalala za zinthu zopangira. Kusanthula kwa inline kumachotsa zitsanzo zamanja, kudula nthawi yodikira zitsanzo ndi zolakwika za anthu, ndikuchepetsa nthawi yopuma yotsimikizira khalidwe ndi kupitirira 40%. Deta yokhazikika ya inline imakhazikika pakusakaniza ndi kuphatikiza, kusunga chiyero cha acetophenone cha ntchito zokonzera zonunkhira nthawi yayitali. Mtengo uliwonse wa density ndi kusintha kumalembedwa, kupereka zikalata zowunikidwa kuti zitsatire miyezo ya acetophenone density. Zida za Lonnmeter zimathandizira kuphatikizana kosalekeza m'mizere yomwe ilipo, kupereka kuwongolera kolondola panthawi yothira, kuchotsa, ndi oximation popanda kulowererapo kwakukulu.
Konzani Mavuto Ovuta mu Njira Yopangira
Pemphani mtengo wa mita yoyezera kuchuluka kwa mafuta a Lonnmeter kuti mugwiritse ntchito poyezera acetophenone ndi mafuta onunkhira. Gwiritsani ntchito zida za Lonnmeter kuti mupeze ubwino woyezera kuchuluka kwa mafuta a inline, kukonza distillation reflux ratio, komanso kudalirika kwa njira yochotsera dichloromethane. Thandizani zolemba za miyezo ya acetophenone purity, kukonza nthawi yomweyo, komanso kukonza kuchuluka kwa madzi otuluka pogwiritsa ntchito masensa olimba komanso olunjika.
Nthawi yotumizira: Januwale-28-2026
