Me tino purea te hau māori hei hau whāngai i mua i te whakapūtanga. Arā, me tango te hau waikawa, te wai me ngā poke i roto i te hau whāngai, pērā i te H2S, CO2, H2Ko te O, te Hg me ngā warowaihā kakara, kia kore ai e tio i te pāmahana iti, kia āraia ai, kia waikura ai hoki ngā taputapu me ngā paipa. Kei te Ripanga 3.1-1 ngā paerewa maimoatanga o mua o te hau whāngai i roto i te tipu LNG me te nui rawa o ngā poke.
Ripanga mōrahi o te ihirangi poke e whakaaetia ana o te hau whāngai LNG
| poke | Teihana ihirangi | Pūtake |
| H2TE |
| A (ka whakaaetia kia neke atu i te rohe whakarewa, me te kore e whakawhāiti i te whakaputanga) |
| CO2 | 50~100ppmV | B (Te wairewatanga mutunga kore) |
| H2S |
| C (ngā whakaritenga hangarau hua) |
| Te katoa o te ihirangi whanariki | 10~50mg/NM3 | C |
| Hg | 3 | He |
| Warowaihā kakara | ≤10ppmV | A, B rānei |
| Ngā warowaihā naphthenic katoa | ≤10ppmV | A, B rānei |
E ai ki ngā raraunga o te hau whāngai, ko te nui o te hauhā waro i roto i te hau whāngai he nui ake i te paerewa, ā, me purea.
Ko te tukanga wai amine MDEA te tukanga tino tika mō te whakapaunga pūngao, te tauine maimoatanga me te haumitanga me te utu whakahaere. Nō reira, i tīpakohia te tukanga wai amine MDEA mō te hau whakakore waikawa i roto i tēnei kaupapa.
B) Kōwhiringa tukanga whakamaroke
Ko te noho o te wai i roto i te hau māori ka arahi pea ki ngā hua kino: i raro i ētahi āhuatanga, ka hanga te wai me te hau māori i te waikura hei aukati i te paipa, hei pā ki te tukanga whakawaiwai whakamatao; Hei tāpiri, ko te noho o te wai ka hua ake he whakapaunga hiko koretake; Nā te iti o te pāmahana whakawaiwai o te hau māori me te noho o te wai, ka tio, ka āraia hoki ngā taputapu, nō reira me whakamaroke.
Ko te tukanga whakamaroke hau māori e toru ngā wāhanga: te whakamaroke pāmahana iti, te mimiti maroke totoka, me te mimiti whakarewa. Ko te wehenga tio te tikanga matua hei karo i te waikura ina iti te pāmahana o te hau māori. Heoi, he iti te pāmahana iti e whakaaetia ana, ā, kāore e taea te whakatutuki i ngā whakaritenga o te waikura hau māori; ko te mimiti whakarewa he waikawa kukū (te nuinga o te waikawa waro pēnei i te waikawa phosphoric kukū), te glycol (TEG e whakamahia whānuitia ana), me ētahi atu, engari he iti te hohonu o te whakamaroke o ēnei tikanga, ā, kāore e taea te whakamahi i roto i ngā waeine cryogenic; ko ngā tikanga whakamaroke noa o te whakamaroke totoka ko te tikanga silica gel, te tikanga tātari ngota, te whakakotahitanga rānei o ngā tikanga e rua.
Me whakamahi te tikanga mimiti totoka mō te whakamaroketanga o te hau māori. Nā te mea he pai ngā painga o te tātari ngota ngota, arā, he kaha te whiriwhiri mimiti, he teitei ngā āhuatanga mimiti i raro i te pēhanga iti o te kohu wai, ā, ka tangohia atu anō hoki te hau waikawa toenga, ka whakamahia te tātari ngota ngota 4A hei mimiti whakamaroketanga i roto i tēnei kaupapa.
C) Te whiriwhiri i te tukanga tango mercury
I tēnei wā, e rua ngā tukanga matua mō te tango i te konukōre: ko te tikanga mimiti i te tātari ngota HgSIV a te kamupene UOP i te Hononga o Amerika, me te waro whakahohe kua whakakiia ki te whanariki hei whakaoho i te konukōre ki te whanariki hei whakaputa i te konukōre whanariki me te mimiti i te konukōre ki runga i te waro whakahohe. He nui te utu o te mea tuatahi, ā, he pai mō ngā wā he nui te konukōre; ko te mea tuarua he iti te utu whakahaere, ā, he pai mō ngā wā he iti te konukōre.
I tētahi taha, he tino nui te utu whakahaere o te tātari ngota HgSIV; i tētahi atu taha, he iti noa te ihirangi mercury i roto i te hau whāngai o te waeine. Nō reira, he wheako angitu tō te kamupene ki te whakamahi i te waro whakahohe kua whakakiia ki te whanariki hei tango i te mercury.
Wā tuku: Hanuere-14-2022