Ko ngā whakamahinga auaha o te dichloromethane (DCM) kāore i te arotahi ki te whakawhānui i tōna tūranga tuku iho hei whakarewa, engari ki "te whakamahi me te whakahaere i a ia kia haumaru ake, kia whai hua ake hoki" me te tūhura i tōna uara ahurei i roto i ngā mara hangarau teitei motuhake.
I. Auahatanga Tukanga: Hei "Utauta Tukanga" Kakariki, Whai Hua hoki
Nā te mea he tino pai te piki me te heke o te pāmahana, he iti te kohua, ā, he ngāwari ki te utu, ka whakamahia te DCM hei "āwhina tukanga" whai hua i roto i ngā hangarau auaha, kaua hei wāhanga o te hua whakamutunga, ā, ka whakaitihia te whakapaunga whānui me ngā tukunga.
1.Kaihoko Whakaiti Moni Whai Hua mō te Hanga Polyolefin
Auahatanga: Kua whakawhanakehia e ētahi kamupene ngā hangarau e whakauru ana i te DCM hei kaihopu tango i te matū i roto i te tukanga whakakore i ngā tīwiri mō ngā polyolefin (hei tauira, POE).
Painga: Ka whakaitihia e te DCM te matotoru o ngā rauemi me te pēhanga ā-wāhanga o te mata, ka whakapai ake i te whai huatanga o te tango i ngā monomer toenga me ngā matū waro pūngoi. He iti ngā taputapu e hiahiatia ana mō tēnei tukanga, ā, he nui te utu whai hua, ka nui ake te whai hua me te whai hua o te pūngao ki te whakataurite ki te tangohanga korehau-teitei tuku iho, ki te tangohanga pāmahana-teitei rānei.
2.Waenga Tauhohenga Kakariki mō te Hanga Rongoā
Auahatanga: I roto i te umanga rongoā, he uaua tonu te whakakapi i te DCM nā te kaha o tōna āheinga ki te utu. Ko te auahatanga kei roto i te whakakotahitanga me ngā hangarau tauhohenga matatau me ngā tukanga hangarua kia tutuki ai te tohanga porowhita kati.
Taupānga: Kua whakauruhia ki te matū rere tonu me ngā tauhohenga hanga aunoa, ka hangaruahia te whakarewa DCM i te wā tūturu, ka purea hoki mā roto i ngā pūnaha whakaora hauhautanga ipurangi kua hangaia, ka whakaiti nui i te kai kotahi-puranga me ngā mōrearea o te pānga.
II. Hangarau Porowhita: Te Hangarua me te Whakangaromanga Whai Hua
Hei whakautu i ngā ture taiao tino pakari, kua mahia ngā mahi auaha nui ki ngā hangarau hangarua DCM me ngā hangarau maimoatanga pito-o-ngā-paipa.
1.Hangarau Whakakorenga Kohu Ā-ringa (MVR) Whai Hua-Pūngao
Auahatanga: E whakamahia ana te hangarau Mechanical Vapor Recompression (MVR) mō te whakaora i te hau para DCM kukū-tiketike.
Painga: Ka taea e ngā pūwero kohu DCM ātete-waikura, tino pumau, i whakawhanakehia e ngā kamupene pēnei i a Chongtong Group te whakamahi anō i te kaha o te kohu tuarua, ka whakaiti i te whakapaunga kaha whakahaere whānui mā te neke atu i te 40%, ka taea ai te whakaora DCM whai hua me te ohanga.
2.Hangarau Whakakorenga Whakakorikori Tino Pai mō te Pāmahana Iti
Auahatanga: Te whakawhanake i ngā whakakorikori hou hei whakangaro i te DCM kia kore e kino i ngā pāmahana iti (70-120°C).
III. Ngā Whakamahinga Motuhake i roto i te Hanganga Tino Pai me ngā Rauemi Hou
I ētahi mara hou e tino teitei ana ngā whakaritenga mō te mahi rauemi, nā ngā āhuatanga ahurei o DCM kāore e taea te whakakapi mō tētahi wā.
1.Te Tukatuka Rauemi Whakaahua-Hiko
Te Whakamahinga: I roto i te whakarite i ngā pūtau rā perovskite, ngā paparanga rama OLED, me ngā ātete whakaahua-teitei, e hiahiatia ana ngā kiriata angiangi ōrite tino parakore. Nā tōna wairewatanga pai me te pāmahana kohua taurite mō te maha o ngā polymer mahi-teitei me ngā ngota iti, ko te DCM tonu tētahi o ngā whakarewa pai mō te whakarite tika i roto i te taiwhanga me te tauine iti o ngā kiriata kounga teitei.
2.Tangohanga Wai Tino Hiranga
Te Whakamahinga: Ka taea te whakamahi i te DCM hei whakarerekētanga, hei whakarewa tahi rānei me te CO₂ tino whakahāngai hei tango pai, hei tango tino whiriwhiri hoki i ngā matū motuhake (hei tauira, ngā alkaloid, ngā hinu kakara) mai i ngā hua taiao. He pai ake tōna whai huatanga tango me tōna whiriwhiringa i ērā o te wai CO₂ tino whakahāngai parakore.
IV. Whakarāpopototanga me te Tirohanga
I te nuinga o te wā, e rua ngā huarahi mārama e ahu whakamua ana ngā tono auaha o te dichloromethane:
Auahatanga Tukanga: Te whakawhiti mai i te "whakamahinga tuwhera" ki te "tohanga porowhita-katia", te whakamahi hei huarahi tukatuka whai hua me ngā hangarau hangarua matatau, me te whāinga matua ki te whakaiti i te whakapaunga kupenga me ngā tukunga taiao.
Auaha Uara: Te pupuri i tōna tūranga i roto i ngā mara hangarau matatau motuhake e uaua ana ki te whakakapi (hei tauira, ngā rongoā kounga teitei, ngā rauemi hiko-whakaahua) mā te whakauru atu ki ētahi atu hangarau matatau hei whakamahi i tōna uara ahurei.
Ka haere tonu ngā whanaketanga ā muri ake nei ki te aro ki te kaupapa o "te haumaru ake, te matomato ake, me te whai hua ake." I tetahi taha, ka ahu whakamua te rangahau mō ngā whakarewa rerekē he iti ake te paitini, i tetahi atu taha, ka haere tonu te whanaketanga o ngā hangarau hei arotau i te whakamahinga me te whakakorenga o te DCM, me te whakaiti i ngā mōrearea i roto i ngā horopaki e kore e taea te karo i tōna whakamahinga.
Wā tuku: Hepetema-15-2025