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Inkqubo yeemveliso zeCAS [95-68-1]. I-2,4-Dimethylaniline
Igama le-CAS: I-Benzenamine, i-2,4-dimethyl- Izalathiso zembali: i-beil. 11, 1111; E1, 483; E2, 606; E3, 2469; E4, 2545.
Ukusetyenziswa: i-asidi ye-orenji 17, 24. i-asidi ebomvu 8, 26, 26: 1, 26: 2, 40, 135, 336. iqhekeza-idayi yokudibanisa iqhezu lama-29. Bomvu ngqo 126, 168, 264. i-violet ethe ngqo 14. usasaze umbala omthubi 11 .
Ukutya okumthubi 12. Ukutya okubomvu 5. Isityheli esimthubi 18, 44, 126. Solvent orenji 7, 30. Uhlobo lokuphendula: ukunciphisa i-nitro.
I-BIOS 1146, 53. 2,4-Dimethylaniline. I-2,4-Dimethylaniline. Inguqulelo yase-Bhritane isuka kwisiJamani. Hayi kwingqokelela yam.

Kwinqanawa yokunciphisa eyi-10 m3 ene-reflux condenser, i-1800 L yamanzi, i-500 L ye-20% yesisombululo se-chloride kunye ne-800 kg yomgubo wentsimbi efunyenwe kwibhetshi yangaphambili. Ukuvuselela kwaqalwa kwaye isisombululo saziswa kwi-thumba ngokufudumeza ngokuthe ngqo. Kwisithuba seeyure ezingama-2500 2500 (2800 kg) ye-4-nitro m-xylene kunye nama-2500 kg yomgubo wentsimbi kongezwa kwi-reductor, izinga lokudityaniswa kwahlengahlengiswa ukugcina umxube ubila, umphunga wawufuneka kuphela ekuqaleni nasekupheleni. Umphunga ophuma kwindawo egungxulwayo kwi conduiter yenyoka kwaye ubuyiselwe kwi-reductor (ngomxube, oxutywe ne-4-nitro m-xylene) apho isongezo senitro sixutywe ngale ndlela ukuvelisa ukuncipha okuzolileyo. Xa uvavanyo lwesampulu ye-condensate lusimahla kwi-xylene, ukunciphisa kuye kugqitywe kwaye kuvuselelwe ezinye iiyure ezi-4-5.
Uvavanyo: Iisampulu zithathwa kwi-reductor yesixhobo sokuhambisa amanzi, ioyile esuka kwiqhezu kufuneka ingabi namibala kwaye ivelise isisombululo esicacileyo ngehydrochloric acid.
Ukukhutshwa: imathiriyeli evela kwizixhobo zokunciphisa icinezelwe kwi-extractor kwaye inyangwa nge-6000 L ye-benzene kwi-60 ° C kwaye ivuselelwe, umxube unyanzeliswa iyure e-1 kwaye ushiywe ume iyure enye. Unxibelelwano phakathi kwamanzi nomkhenkce lwalugqitywe ngokuntywila intambo ebotshelelwe kwi-benzene edadayo kodwa edada emanzini, okt, ubunzulu bomphezulu othe tye. I-gram yetyhubhu yokuntywiliselwa elawulwayo yehliswa ngaphantsi kwenqanaba elilinganisiweyo, kwaye umaleko ophezulu we-benzene ucinezelwe kwidama elinenitrogen. Oku kukhutshwa kuqhutywa amaxesha angama-6-7, kwaye ukukhutshwa kugqityiwe xa kuphela i-3-5 kg ​​ye-m-xylene amine isala kwisicatshulwa.
Izicatshulwa ezintathu zokuqala ezinobunzima obumalunga ne-0.96, 0.925 kunye ne-0.90 zithunyelwa kwiketile yokubuyisela i-benzene. Isisombululo se-benzene se-xylenolamine sishiywe kwitanki yokugcina kwaye sithunyelwe kwi-kettle ye-distillation, apho i-benzene ikhuphuka kwaye ibuyiselwe kwicandelo lokukhutshwa ukuze lisetyenziswe kwakhona. I-xylenolamine ihlala kwi-kettle ye-distillation.
Intsalela zamanzi kwisigaba sokukhupha amanzi kwi-4-5 iiyure ukuphinda ufumane i-benzene, emva koko wonke umxube ngoxinzelelo lomoya kwisahluli segadi yekholamu, kuxinzelelo olusezantsi kwesahluli sokudlulisa amanzi, ukudlulisa isantya samanzi ukwenza intsimbi oxide edadayo, ngenxa yokuphuma okuphezulu ukuya kwitanki yokugcina intsimbi, apho ukukhutshwa kwamanzi amdaka.
Isikrweqe sensimbi esingasetyenziswanga, sinzima kune-oxide yentsimbi, siyatshona emazantsi esahlukanisi se-cylindrical ngobungakanani be-800-1000 kg kwaye ibuyiselwe kwibhetshi elandelayo yeketile yokunciphisa.
Ukucoca ulwelo: Imveliso ekrwada evela kwikholamu yokuhluza, emva kokususwa kwe-benzene, idluliselwe kwenye iketile yokuthambisa ikholamu, apho icocwa khona yi-distillation enye kwi-20-30 mm kunye ne-125-135 ° C. Ukusebenza kakuhle kokucoca ulwelo ngama-97-98%. Ukusebenza kakuhle kwe-distillation yayiyi-97-98%.
Isivuno sisonke ngama-90-91%. Emva kwe-distillation, i-m-Xylene-4-aniline kufuneka icace kwaye ikhanye ngombala otyheli. Isisombululo kwihydrochloric acid kufuneka icace.
PB 25624, 1151.I-xylidine. Inkqubo yokuvelisa i-2,4-xylene-aniline Devon. (Indlela yokunciphisa umgubo wentsimbi) Ayikopiswanga.
I-Tianjin Wuyi Factory mveliso, iZiko loPhando ngeDayi. Isishwankathelo sovavanyo oluncinci lwe-2,4-Dimethylaniline njengophakathi kwelemon etyheli. [J] Umzi mveliso weDyestuff, 1970, 5/6, 84-85 (62).
Inkqubo yokusebenza: (umlinganiso wesithako: kancinci). Yongeza amanzi, ihydrochloric acid kunye nomgubo wentsimbi kwibhotile eyi-3000 ml ngesixhobo esirhabaxa nesixubisayo, gxobhoza imizuzu eli-15, emva koko unyuse kancinci iqondo lobushushu ukuya kwi-90-98 ℃ kwaye uqalise ukongeza i-nitroxide. Ukuba i-nitroxide iyanyamalala, qhubeka ukongeza i-nitroxide, ihlala ingezizo iiyure eziyi-1.5-2. Emva kokongeza i-nitroxide, gcina impendulo kubushushu obungasentla kangangeeyure ezingama-2-2.5, de kube i-osmosis etyheli inyamalale kwaye akukho vumba le-nitroxide, impendulo yokuphungula iya kufikelela esiphelweni. Emva koko pholisa phantsi ukuya kuma-40-50 ℃, yongeza i-sodium carbonate kwaye ungayeki kwi-pH 7.5-8, uze ulinganise ii-reactants ezingafakwanga kwiphepha lokucoca ulwelo ngesisombululo sealkali sulfide.
Kwi-2000 ml yeebhotile ezintathu ekunciphiseni i-reactants, ngaphambi kokucinezela iflask-bottomed flask for vapor generator yamanzi, ilandelwe yi-tube condenser ethe tye, i-condenser emva kwe-distillate bearer, ekunciphiseni ibhotile yomlomo emithathu, beka ukufudumeza iziko lombane, xa umntu ophethe i-distillate egcweleyo, engena kwi-faneli yolwelo eyahlulwe yangamacwecwe, m-xylene amines ngaphandle, emva koko ubunzima bokuhlalutya.
I-Tianjin Wuyi Factory mveliso, iZiko loPhando ngeDayi. Isishwankathelo sovavanyo lwe-2,4-xylene amine encinci. [J] Umzi mveliso weDyestuff, 1975, 2, 63. Shenyang Institute Collection No 75067.
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