I-Thiourea, ene-molecular formula ye (NH2) 2CS, i-orthorhombic emhlophe okanye i-acicular bright crystal.Iindlela zamashishini zokulungiselela i-thiourea ziquka indlela ye-amine thiocyanate, indlela ye-lime nitrogen, indlela ye-urea, njl. Kwindlela ye-lime nitrogen, i-nitrogen ye-lime, i-hydrogen sulfide gas kunye namanzi zisetyenziselwa i-hydrolysis, i-reaction reaction, i-filtration, i-crystallization kunye nokomisa kwi-synthesis. iketile ukufumana imveliso egqityiweyo.Le ndlela ineenzuzo zokuhamba kwenkqubo emfutshane, akukho ngcoliseko, ixabiso eliphantsi kunye nomgangatho omhle wemveliso.Okwangoku, uninzi lweefektri zisebenzisa indlela ye-lime nitrogen ukulungiselela i-thiourea.
Ukusuka kwimeko yemarike, iChina ngoyena mvelisi mkhulu we-thiourea kwihlabathi.Ukongeza kokuhlangabezana nemfuno yasekhaya, iimveliso zayo zithunyelwa eJapan, eYurophu, eUnited States, kuMzantsi-mpuma Asia nakwamanye amazwe kunye nemimandla.Ngokubhekiselele kwisicelo esisezantsi, i-thiourea isetyenziswa ngokubanzi njengezinto eziluhlaza zokwenza izitshabalalisi, amayeza, iikhemikhali ze-elektroniki, izongezo zekhemikhali, kunye ne-ejenti ye-flotation yegolide.
Kwiminyaka yakutshanje, ukuveliswa kwe-thiourea e-China kuye kwaphuhliswa kwinqanaba elithile, kunye nomthamo weetoni ze-80,000 / ngonyaka kunye nabavelisi abangaphezu kwe-20, apho ngaphezu kwe-90% ngabavelisi betyuwa ye-barium.
EJapan, kukho iinkampani ezi-3 ezivelisa i-thiourea.Kwiminyaka yakutshanje, ngenxa yokuncipha kwe-ore, ukunyuka kweendleko zamandla, ukungcoliseka kwendalo kunye nezinye izizathu, ukukhutshwa kwe-barium carbonate kuye kwancipha unyaka nonyaka, okukhokelela ekunciphiseni ukuveliswa kwe-hydrogen sulfide, ethintela ukuveliswa kwe-hydrogen sulfide. i-thiourea.Ngaphandle kokukhula okukhawulezayo kwemfuno yemarike, umthamo wemveliso uyancipha kakhulu.Imveliso imalunga neetoni ezingama-3000/ngonyaka, ngelixa imfuno yemarike imalunga neetoni ezingama-6000/ngonyaka, kwaye umsantsa ungeniswa eTshayina.Kukho iinkampani ezimbini eYurophu, iNkampani ye-SKW eJamani kunye neNkampani ye-SNP yaseFransi, enemveliso yeetoni ezingama-10,000 ngonyaka.Ngophuhliso oluqhubekayo lwe-thiourea kwi-pesticides kunye nezinye izinto ezintsha, iNetherlands neBelgium ziye zaba ngabathengi abakhulu be-thiourea.Ukusetyenziswa kwemarike yonyaka kwimarike yaseYurophu malunga neetoni ezingama-30,000, apho iitoni ezingama-20,000 kufuneka zingeniswe eChina.Inkampani ye-ROBECO e-United States inemveliso yonyaka ye-thiourea malunga neetoni ezili-10,000 ngonyaka, kodwa ngenxa yokhuseleko olungqongqo lwendalo esingqongileyo, imveliso ye-thiourea iyancipha unyaka nonyaka, okude kakhulu ukuhlangabezana nemfuno yemarike.Kufuneka ingenise ngaphezu kwe-5,000 yeetoni ze-thiourea evela e-China minyaka le, isetyenziswa ikakhulu kwisibulali-zinambuzane, amayeza kunye namanye amasimi.
Ixesha lokuposa: Apr-17-2023