Kupu Whakataki
Ko te taputapu whakareka o te tātari ngota hau māori (desulfurization) reti, e kiia ana hoki ko te tango i te sulfide tātari ngota mai i te hau māori, he taputapu matua mō te tango i te H2S mai i te hau māori me te maimoatanga hau māori.
Te rere o te tukanga
E toru ngā tukanga pourewa e whakamahia ana e te waeine, arā, kotahi te mimiti pourewa, kotahi te whakaora pourewa, me tetahi te whakamatao pourewa. Whai muri i te tango i te wai warowaihā kua mau mā te wehewehe tātari hau whāngai, ka tomo te hau whāngai ki te pourewa whakakorenga whanariki tātari ngota. Ka mimitihia te wai me te mercaptan i roto i te hau whāngai e te tātari ngota hei whakatutuki i te tukanga mimiti me te mimiti mercaptan. Ka tomo te hau parakore mai i te mimiti me te tango mercaptan ki te tātari puehu hau hua hei tango i te puehu tātari ngota, kātahi ka kaweake hei hau hua.
Me whakahou anō ngā tātari ngota i muri i te mimiti i tētahi nui o te wai me te mercaptan. Whai muri i te tātari i te puehu hau hua, ka tangohia tētahi wāhanga o te hau hua hei hau whakaora. Whai muri i te whakamahana i te hau ki te 300 ℃ e te oumu whakamahana, ka whakamahana mārire te pourewa ki te 272 ℃ mā te pourewa whakakorenga whanariki tātari ngota kua oti te tukanga mimiti mai i raro ki runga, kia taea ai te wehe i te wai me te mercaptan e mimiti ana ki runga i te tātari ngota, ka huri hei hau whakaora whai rawa hei whakaoti i te tukanga whakaora.
I muri i te pourewa whakaora, ka tomo te hau whakaora whai rawa ki te pūwhakapūngao hau whakaora, ka whakamatao ki te 50 ℃, kia whakamatao te nuinga o te wai, kātahi ka wehea e te wehewehe, ā, ka tahuna te hau whakaora whai rawa kua wehea.
Me whakamatao te pourewa tātari ngota i muri i te whakahoutanga. Hei whakaora katoa me te whakamahi i te kaha wera, ka whakamahia tuatahitia te hau whakahoutanga hei hau pupuhi makariri, kātahi ka whakamataohia te pourewa ki te 50 ℃ mai i runga ki raro mā te pourewa whakakore whanariki tātari ngota kua oti te tukanga whakahoutanga. I taua wā anō, ka whakamahanahia anō. Ka tukuna te hau pupuhi makariri i waho o te pourewa whakamatao, kātahi ka whāngaihia ki te oumu whakamahana hau whakahoutanga hei whakamahana. I muri i te whakamahana, ka whakahoutia te pourewa whakakore whanariki tātari ngota hei hau whakahoutanga kikokore. Ka huri te taputapu i ia 8 hāora.
