ʻO Thiourea, me ke ʻano molekala o (NH2)2CS, he keʻokeʻo orthorhombic keʻokeʻo a i ʻole acicular aniani aniani.ʻO nā ʻano hana ʻoihana no ka hoʻomākaukau ʻana i ka thiourea ʻo ia ka amine thiocyanate method, lime nitrogen method, urea method, etc. kettle e kiʻi i ka huahana i pau.Loaʻa i kēia ʻano ka maikaʻi o ke kahe kaʻina pōkole, ʻaʻohe pollution, ke kumu kūʻai haʻahaʻa a me ka maikaʻi o ka huahana.I kēia manawa, hoʻohana ka hapa nui o nā hale hana i ke ʻano lime nitrogen e hoʻomākaukau ai i ka thiourea.
Mai ke kūlana mākeke, ʻo Kina ka mea hana thiourea nui loa ma ka honua.Ma waho aʻe o ka hoʻokō ʻana i ka noi kūloko, lawe ʻia kāna huahana i Iapana, ʻEulopa, ʻAmelika Hui Pū ʻIa, ʻAsia Hema a me nā ʻāina a me nā ʻāina ʻē aʻe.Ma ke ʻano o ka noi haʻahaʻa, hoʻohana nui ʻia ʻo thiourea e like me nā mea maka no ka hana ʻana i nā pesticides, nā lāʻau lapaʻau, nā kemika uila, nā mea hoʻohui kemika, a me ka mea hoʻoheheʻe gula.
I nā makahiki i hala iho nei, ua hoʻomohala ʻia ka hana ʻana o thiourea ma Kina i kahi ʻano, me ka mana o 80,000 tons / makahiki a ʻoi aku ma mua o 20 mau mea hana, ʻoi aku ka nui o ka 90% o nā mea hana paʻakai barium.
Ma Iapana, aia 3 mau hui e hana ana i ka thiourea.I nā makahiki i hala iho nei, ma muli o ka emi ʻana o ka ʻai, ka piʻi ʻana o nā kumukūʻai o ka ikehu, ka haumia o ke kaiapuni a me nā kumu ʻē aʻe, ua hōʻemi ka puka o ka barium carbonate i kēlā me kēia makahiki, ka hopena i ka hoʻemi ʻana o ka hana ʻana o ka hydrogen sulfide, ka mea e kaupalena ai i ka hana ʻana o thiourea.ʻOiai ka ulu wikiwiki o ka noi mākeke, ua hoʻemi nui ʻia ka hiki ke hana.ʻO ka huahana ma kahi o 3000 tons / makahiki, ʻoiai ke koi ʻia ka mākeke ma kahi o 6000 tons / makahiki, a lawe ʻia mai ka ʻāpana mai Kina.ʻElua mau hui ma ʻEulopa, ʻo SKW Company ma Kelemānia a me SNP Company ma Farani, me ka huina o 10,000 tons i kēlā me kēia makahiki.Me ka hoʻomau mau ʻana o ka thiourea i nā pesticides a me nā mea hoʻohana hou, ua lilo ʻo Netherlands a me Belgium i mea kūʻai nui o thiourea.ʻO ka hoʻohana ʻana i ka mākeke makahiki ma ʻO ka mākeke ʻEulopa ma kahi o 30,000 tons, kahi o 20,000 tons e pono e lawe ʻia mai Kina.ʻO ka hui ʻo ROBECO ma ʻAmelika Hui Pū ʻIa he 10,000 tons / makahiki, akā ma muli o ka mālama ʻana i ke kaiapuni, e emi ana ka huahana o thiourea i kēlā me kēia makahiki, kahi mamao loa mai ka hoʻokō ʻana i ka noi mākeke.Pono ia e lawe mai ma mua o 5,000 tons o thiourea mai Kina i kēlā me kēia makahiki, hoʻohana nui ʻia i ka pesticide, lāʻau lapaʻau a me nā māla ʻē aʻe.
Ka manawa hoʻouna: Apr-17-2023