E mohiotia ana ano ko te dimethylaniline, he kore tae ki te kowhai marama he wai hinuhinu, he kakara whakararu, i te rangi, i raro ranei i te ra ka ngawari te whakamahi i te waiora Ze ka hohonu. Kiato pātahi (20℃/4℃) 0.9555, pūrei mīti 2.0℃, whewhe korohū 193℃, pūira (tuwhera) 77℃, pūkākā 317℃, pokey (25℃) 1.528 MPa ·s, taupū whakaata (N20D) 1.5584 . Wairewa i roto i te waiwaro, etere, chloroform, benzene me etahi atu whakarewa pararopi. Ka taea te wetewete i nga momo puhui waro. He iti te memeha ki te wai. Ka mura, ka wera i roto i te ahi tuwhera, te mamaoa me te hau ki te hanga i te ranunga pahū, te rohe pahū o 1.2%~7.0% (vol). He paitini nui, he nui te waiariki pirau o te tukunga o te hau aniline paitini. Ka taea te whakauru i roto i te kiri me te paitini, LD501410mg/kg, ko te 5mg/m3 te nui o te kukū e whakaaetia ana ki te hau.

Nga tikanga rokiroki

1. Rokiroki Notes [25] Rokiroki i roto i te whare putunga hauhautanga, whai hau. Mawehe atu i te ahi me te wera. Kia hiri te ipu. Me penapena motuhake mai i nga waikawa, nga haurua me nga matū kai, kaua hoki e konatunatua. Whakaritea ki nga momo momo me te nui o nga taputapu patu ahi. Ko te waahi rokiroki me whakauru ki nga taputapu maimoatanga ohorere pakaru me nga taonga rokiroki tika.

2. I hiritia ki te pahū rino, 180kg mo ia oko. Rokiroki ki te waahi hauhautanga me te hau. Whakaorangia me te kawe i runga i nga ture o nga mea kaakahu me te paitini

Ko nga tikanga waihanga

1. Ma te aniline me te methanol i te aroaro o te waikawa sulfuric, na roto i te wera nui me te tauhohenga pehanga teitei. Te rere o te tukanga: 1. Tāpirihia te 790kg o te aniline, te 625kg o te methanol me te 85kg o te waikawa sulfuric (100% o te haukinia) ki te reactor, te whakahaere i te pāmahana 210-215 ℃ me te pehanga 3.1MPa, te urupare mo te 4h, ka tukuna te pehanga, tukuna te rauemi ki te kaiwehewehe, whakakorehia ki te 30% konutai waikawa, tu, ka wehe i te tote haukinia o raro. Katahi te tauhohenga hauwai i te 160 ℃, 0.7-0.9MPa mo te 3h, ko te hua o te hydrolyzate me te hinu o runga i honoa ki te horoi wai me te whakamaarama korehau kia whiwhi ai i te hua kua oti.

2, me te methanol me te aniline hei rauemi mata, i raro i te ahua o te methanol nui, te pehanga o te hau, 200-250 ℃, na roto i te konupuku whakakoi whakakoi. Motunga kai rawa: aniline 790kg/t, mewaro 625kg/t, waikawa pungatara 85kg/t. Ka taea e te whakarite taiwhanga te tauhohe i te aniline me te trimethyl phosphate.

3. Kua konatunatua te aniline me te methanol (N aniline: N methanol ≈ 1:3) ka werohia ki roto i te reactor kua oti te whakakorikori i te tere mokowhiti o te 0.5h-1 na roto i te papu inenga kore-pure. Ka kuhu tuatahi te rerenga o te tauhohenga ki roto ki te whakawehe i te karaihe hau-wai, me te wai i kohia ki raro o te whakawehe ka tangohia i nga wa katoa mo te tātari chromatographic.

4. I te tau 2001, i hangaia e te Whare Wananga o Nankai me Tianjin Ruikai Science and Technology Development Co., Ltd he whakakorikori methylation aniline tino pai ki te mohio i te wahanga hau o te N, N-dimethylaniline. Ko te tukanga e whai ake nei: I muri i te konatunatua te aniline wai ki te methanol i roto i te rahinga, ka whakangohu ki roto i te pourewa whakangohu ka uru ki roto i te reactor tubular me te tere mokowhiti o 0.5-1.0h-1 (te moenga pumau o te reactor tubular. kua rite rawa ki te whakakōkī totoka nanometer tautokona) mo te hanga tonu i te 250-300 ℃ me te pehanga hau. Ko te hua o te DMA kei runga ake i te 96%.

Tikanga para: he maha nga wa kei roto te aniline, N- methyl aniline me etahi atu poke. I te wa e whakamahine ana, ka memeha te N, N-dimethylaniline ki te 40% waikawa pungatara, ka mahia te whakamaarama mamaoa. Ka tāpirihia te konutai waihā hei hanga taketake. Kei te haere tonu te whakamarumaru mamaoa. Ka wehea te distillate ki te paparanga wai ka whakamaroke ki te pāhare pāhare pāporo. Te whakakore i te pehanga hau i te aroaro o te anhydride acetic. I horoia te wai whakaahuru ki te wai hei tango i te nui o te acetic anhydride, ka whakamarokehia ki te pāhare pāhare pāporo, ka whai i te waikura parepare me te whakamaroke i roto i te awa hauota. Ko etahi atu tikanga whakamahine ko te taapiri i te 10% acetic anhydride me te reflux mo etahi haora hei tango i nga amine tuatahi me te tuarua. I muri i te whakamatao, taapirihia te 20% waikawa pūhaumāota me te tango ki te ether. I hanga kawakore te paparanga waikawa waikawa ma te taapiri i te kawakawa, katahi ka tangohia me te ether. I whakamarokehia te paparanga ether ki te pāhare pāhare pāporo, kātahi ka marewa i raro i te pēhanga i raro i te hauota. N, N-dimethylaniline ka taea hoki te huri ki te picronate, ka whakakikoruatia ki te rewa tonu me te whakamahana 10% konutai waiwaro wairewa wai hei whakahoro i te picronate. Tango ki te ether, horoi ki te wai ka whakamaroke i muri i te whakamaroke korehau.

5. Ko te aniline, te methanol me te waikawa pungatara ka konatunatua kia rite ki te ohanga, ka whakamatao ki roto i te autoclave. I muri i te hokinga mai o te hua tauhohenga ma te awhina pehanga, ka taapirihia te kawakore mo te whakakorenga, te wehenga, katahi ka riro mai te hua ma te whakamarumaru korehau.

6. Ko te tauhohenga methylation o te aniline me te trimethyl phosphate ka taea te whakaputa N, N-dimethylaniline: ka tangohia ki te ether, te whakamaroke maroke.

7. Ka taea te whakahiato N, N-dimethylaniline mā te tāpiri i te ranunga o te aniline me te methanol i te ōwehenga o te 1∶ 3.5 i roto i te moenga catalytic o Cu-Mn, Cu-Zn-Cr Ziegler whakakōkī i te 280 ℃. Ko te hua N, N-dimethylaniline ka kohia i roto i te waahanga whakamaaratanga o nga papa 54 i roto i te awhe o te 193 ki te 195 ℃ ka takai ki roto i nga ipu karaihe parauri. Mo te whakarite chromatography parakore N, N-dimethylaniline, hauota e taea e te hau kawe, i roto i te takahanga hau chromatography ki Ben 犅 yaku tīwae werohia te whakatika o N, N-dimethylaniline, i roto i te wehenga me te kohinga o te hautanga tihi wāhanga matua, a ka ki roto i te hiri ampoule karaihe ka taea.

Ko te kaupapa matua

1. Ko tetahi o nga mea taketake mo te hanga waikano turanga tote (waikano methane triphenyl, me etahi atu) me nga waikano taketake, ko nga momo matua he kowhai kanapa kawakore, he papura kawakore 5GN, he kakariki kaakaariki, he roto kawakore he puru puru, he whero kanapa 5GN, puru kanapa, me etahi atu N, N-dimethylaniline i roto i te ahumahi rongoa mo te hanga o te cephalosporin V, te sulfamilamide B-methoxymidine, te sulfamilamide dimethoxymidine, te fluorouracil, me etahi atu, i roto i te ahumahi kakara mo te hanga o te vanillin, me etahi atu. he whakarewa, he whakamarumaru whakarewa, he kaiwhakaora mo te kapia epoxy, he kaiwhakatere whakatere o te kapia polyester, he whakakorikori mo te polymerization o nga pūhui ethylene, me etahi atu. Ka whakamahia ano hoki hei whakarite i nga waikano methane triphenyl taketake, nga tae azo me te vanillin. 3. Ka whakamahia tenei hua hei whakakorikori mo te hanga kirihou pahuka i te polyurethane me nga puhui tine waro. Ka whakamahia ano hei kaiwhakatere rapa vulcanization, pahū, ho'oraa rauemi mata. Koia tetahi o nga rawa taketake mo te hanga waikano i runga i te turanga (waikano methane triphenyl, me etahi atu) me nga waikano taketake. Ko nga momo matua he kowhai kanapa taketake, he papura papura BN, he matomato taketake, he puru te roto taketake, he whero kanapa 5GN, he puru kanapa, me etahi atu N, N-dimethylaniline i roto i te ahumahi rongoa mo te hanga cephalosporin V, sulfamilamide N- methoxymidine, sulfamilamide - dimethoxymidine, fluorouracil, me etahi atu, i roto i te ahumahi kakara mo te hanga o te vanillin, me etahi atu. Ka taea hoki te whakamahi hei whakarewa, hei whakakorikori mo te polymerization o nga pūhui ethylene, he whakamarumaru whakarewa, he mimiti ultraviolet mo nga mea whakapaipai, he whakamarama marama, me etahi atu. waikano whakarewa me nga mea kakara (vanillin) me etahi atu rauemi mata. 5. Reagent e whakamahia ana mo te whakatau whakaahua o te nitrite. Ka whakamahia ano hei whakarewa me te whakahiato waro. 6. Whakamahia hei waikano takawaenga, whakarewa, whakapumau, reagent tātari.