O-nitrophenol

Tikanga 1.Hydrolysis: ko te o-nitrochlorobenzene te waiwai me te waikawa i te wairewa konutai wai.Tāpirihia te 1850-1950 l o te 76-80 g / L te wairewa konutai waihā ki roto i te kōhua ​​hydrolysis, ka tāpirihia te 250 kg o te o-nitrochlorobenzene kua whakakotahi.Ka whakawerahia ki te 140-150 ℃ me te 0.45MPa te pehanga, pupurihia mo te 2.5h, ka hiki ki te 153-155 ℃ me te 0.53mpa te pehanga, ka pupuri mo te 3h.I muri i te tauhohenga, ka whakamataohia ki te 60 ℃.Tāpirihia te 1000L wai me te 60L te waikawa pungatara whakangao ki roto i te crystallizer i mua, katahi ka pehia ki roto i te hydrolyzate kua whakahuahia i runga ake nei, ka ata taapirihia te waikawa pungatara tae noa ki te huri papura te pepa whakamatautau whero o Congo, katahi ka tapirihia te huka ki te whakamatao ki te 30 ℃, whakaohokia, tātari, ka wiri. atu i te waipiro whaea me te centrifuge kia whiwhi 210kg o-nitrophenol me te 90%.Ko te hua ko te 90%.Ko tetahi atu tikanga whakarite ko te whakangao o te phenol ki te ranunga o-nitrophenol me te p-nitrophenol, katahi ka whakamaarama i te o-nitrophenol ki te kohu wai.I mahia te nitrification i te 15-23 ℃ me te pāmahana teitei kaua e neke atu i te 25 ℃.

2.Phenol nitration.Ko te Phenol ka whakahiatohia e te waikawa nitric hei hanga i te ranunga o-nitrophenol me te p-nitrophenol, katahi ka wehea e te makuku mamaoa.