I-Thiourea, enefomula ye-molecular (NH2) 2CS, iyikristalu emhlophe ye-orthorhombic noma i-acicular ekhanyayo.Izindlela zezimboni zokulungiselela i-thiocyanate zihlanganisa indlela ye-amine thiocyanate, indlela ye-lime nitrogen, indlela ye-urea, njll. Endleleni ye-lime nitrogen, i-lime nitrogen, igesi ye-hydrogen sulfide namanzi asetshenziselwa i-hydrolysis, ukusabela okwengeziwe, ukuhlunga, ukucwenga kanye nokomisa ekuhlanganiseni. iketela ukuthola umkhiqizo oqediwe.Le ndlela inezinzuzo zokugeleza kwenqubo emfushane, akukho ukungcola, izindleko eziphansi kanye nekhwalithi yomkhiqizo omuhle.Njengamanje, izimboni eziningi zisebenzisa indlela ye-lime nitrogen ukulungisa i-thiourea.
Kusukela esimweni semakethe, i-China ingumkhiqizi omkhulu we-thiourea emhlabeni.Ngaphezu kokuhlangabezana nesidingo sasekhaya, imikhiqizo yayo iphinde ithunyelwe eJapan, Europe, United States, Southeast Asia nakwamanye amazwe nezifunda.Ngokusetshenziswa komfula, i-thiourea isetshenziswa kabanzi njengezinto ezingavuthiwe zokukhiqiza izibulala-zinambuzane, imithi, amakhemikhali kagesi, izithasiselo zamakhemikhali, kanye ne-ejenti yegolide yokuntanta.
Eminyakeni yamuva, ukukhiqizwa kwe-thiourea e-China kuye kwathuthukiswa ngezinga elithile, ngomthamo wamathani angama-80,000 / ngonyaka nabakhiqizi abangaphezu kuka-20, okungaphezu kuka-90% abakhiqizi bakasawoti be-barium.
E-Japan, kunezinkampani ezi-3 ezikhiqiza i-thiourea.Eminyakeni yamuva, ngenxa yokuncipha kwe-ore, ukwanda kwezindleko zamandla, ukungcoliswa kwemvelo nezinye izizathu, ukukhiqizwa kwe-barium carbonate kuye kwehla unyaka nonyaka, okuholela ekunciphiseni kokukhiqizwa kwe-hydrogen sulfide, ebeka umkhawulo ekukhiqizeni i-thiourea.Naphezu kokukhula ngokushesha kwesidingo semakethe, amandla okukhiqiza ancipha kakhulu.Umphumela ungamathani angama-3000 ngonyaka, kanti isidingo semakethe singamathani angama-6000 ngonyaka, futhi igebe lingeniswa lisuka eChina.Kunezinkampani ezimbili e-Europe, i-SKW Inkampani yaseJalimane kanye neNkampani ye-SNP yaseFrance, ekhiqiza amathani ayi-10,000 ngonyaka.Ngokuthuthuka okuqhubekayo kwe-thiourea kwizibulala-zinambuzane nokunye ukusetshenziswa okusha, iNetherlands neBelgium seziphenduke abathengi abakhulu be-thiourea.Ukusetshenziswa kwemakethe yonyaka emakethe yaseYurophu cishe amathani angama-30,000, amathani angama-20,000 awo adinga ukungeniswa evela eChina.Inkampani ye-ROBECO e-United States inomkhiqizo wonyaka we-thiourea ongaba amathani ayi-10,000/ngonyaka, kodwa ngenxa yokuvikelwa kwemvelo okwandayo okuqinile, ukukhiqizwa kwe-thiourea kuncipha unyaka nonyaka, okukude nokuhlangabezana nesidingo semakethe.Idinga ukungenisa amathani angaphezu kuka-5,000 e-thiourea evela e-China minyaka yonke, ikakhulukazi esetshenziselwa izibulala-zinambuzane, imithi kanye neminye imikhakha.
Isikhathi sokuthumela: Dec-06-2021