Miro parakore—whakatuwhera—whakawaiwai—etherifying—neutralizing—separating—horoi—wehewehe, whakamaroke—whakapuru—te whakakakahu—ka oti te whakatuwhera miro: ka whakatuwherahia te miro parakore hei tango i te rino, katahi ka kowhatu. Ko te miro para parakore i roto i te ahua o te paura, a ko te rahi o te matūriki ko te 80 mata me te whakawhiti he 100%. Ki te kore, he ngawari ki te whakahiato tahi i te wa o te mahi tauhohenga me te whakaiti i te pai o te etherification.
Alkalization: Tāpirihia te paura miro parakore i muri i te whakatuwheratanga ki roto i te whakarewa inert, ka whakahohe ki te alkali me te wai ngohengohe ki te pupuhi i te kurupae o te miro para, e pai ana ki te kuhu o nga ngota ngota kaihoko, me te whakapai ake i te riterite o te tauhohenga etherification. . Ko te kawakore e whakamahia ana i roto i te whakamaaramatanga he waiwai whakarewa, he turanga waro ranei. Ko te nui o te kawakore ka tapirihia (ma te papatipu, he rite ki raro nei) he 0.1-0.6 nga wa o te miro para, a ko te nui o te wai ngohengohe he 0.3-1.0 nga wa o te miro para; Ko te whakarewa mokowhiti he ranunga o te waipiro me te waiwaro, a ko te nui o te whakarewa mokowhiti ka tapiritia he miro para. 7-15 nga wa: ka taea ano e te whakarewa mokowhiti te waipiro me te 3-5 ngota waro (penei i te waipiro, propanol), acetone. Ka taea hoki te hauwai aliphatic me te hauwai kakara; me whakahaere te pāmahana i roto i te 0-35°C i te wa o te whakamaaramatanga; Ko te wa whakamaarama he 1 haora. Ko te whakarereketanga o te pāmahana me te wa ka taea te whakatau kia rite ki nga whakaritenga o te rauemi me te hua.
Te whakamaarama: I muri i te maimoatanga o te whakamaaramatanga, i raro i nga tikanga korehau, ka mahia te whakamaaramatanga ma te taapiri i tetahi kaihoko etherifying, a ko te kaihoko whakakoi he propylene oxide. Hei whakaiti i te kohi o te kaikawe etherifying, i roto i te tukanga etherification, e rua nga wa ka taapirihia te kaihoko etherifying, ko te nui o te taapiri tuatahi ko te 1-3.5 nga wa o te miro parakore, me te tapeke o nga taapiri e rua. he 1.5-4 nga wa o te miro parakore. wā. I muri i te taapiri i te kaihoko etherifying mo te wa tuatahi, whakaoho i te pāmahana o ≤30 ° C mo te 45min-90min, ka wera ake ki te 50-100 ° C mo te etherification, ko te wa ko 1-5h, ka whakamatao ki te ≤30 °C , Tāpirihia te Jing etherified mo te wa tuarua me te whakaoho, ko te wa whakaoho he 30-120min, ka wera ake ki te? ? ? Whakahaerehia te whakamaarama, ko te wa ko te 1-4h, i tenei wa, ka tino urupare te miro parakore me te kaihoko etherifying ki te whakaputa H-HPC.
Te pupuhi me te takai: ko te hua maroke o te mea hanga o naianei kua parapara, kua tatari. Ko te rahi o te matūriki o te hua paraihe me te tatari o te hanga o naianei ko te 40 mesh me te whakawhiti he 10096, i runga ranei i nga hiahia o te kaiwhakamahi. Na ka kohia ki waho o te wheketere.
Wā tuku: Oketopa-13-2022