Ama-granulator avamile okufaka umanyolo afaka ama-granulator okufaka umanyolo aphindwe kabili kanye nama-granulator okufaka umanyolo acwebezelayo acwebezelayo. Ngesikhathi sokucubungula umanyolo ohlanganisiwe, la ma-granulator angandisa izakhi ze-nitrogen ngokwezidingo, kanti amanye asebenzisa i-urea njengomthombo wezakhi ze-nitrogen, ezingamunca kalula umswakama emoyeni futhi zibangele ukuthi izinhlayiya zomanyolo ohlanganisiwe zinamathele ndawonye. Ngakho-ke, kuvame ukuthiwa i-granulator yokukhipha umanyolo ophindwe kabili iyi-granulator yempuphu eyomile, enomphumela ongcono ekucubunguleni ama-granule ezinto zokusetshenziswa ezinomswakama ongaphansi kuka-10%. Ezintweni ezimanzi, ubuchwepheshe obudingekayo bokulwa nokuqina kumele buqhutshwe. Ukuze kugcinwe ama-granule omanyolo aqukethe umswakama njengezinto zokusetshenziswa zomanyolo ohlanganisiwe, kubalulekile ukugwema ukuqina.
Isimiso kanye nesidingo samanzi sama-granule okucubungula i-granule yomanyolo ohlanganisiwe
Umgomo wokusebenza we-extrusion granulator ikakhulukazi i-dry impuphu eyomile njengezinto eziyinhloko zokusetshenziswa. Lapho izinto ezibuthakathaka zicindezelwa, ingxenye yezinhlayiya iyachotshozwa, bese i-college powder igcwalisa izikhala phakathi kwezinhlayiya. Kulokhu, uma izibopho zamakhemikhali zamahhala ebusweni obusanda kukhiqizwa zingakwazi ukugcwala ngokushesha ngama-athomu noma ama-molecule avela emoyeni ozungezile, izindawo ezisanda kukhiqizwa ziyahlangana futhi zakhe izibopho eziqinile zokuhlanganisa. Ngokukhipha i-roller, isikhumba se-roller sinomsele ophambene oyindilinga, okhishwa ube yisimo esiyindilinga, kanti izinhlayiya ezikhishwe yi-flat (ring) die ziyikholomu.I-extrusion granulation idinga umswakama ophansi kakhulu. Uma umswakama uphezulu kakhulu, kuyadingeka ukwengeza uhlelo lokomisa kubuchwepheshe bokucubungula.
Isixazululo semiphumela emibi yohlobo lokumuncwa komswakama womthombo we-nitrogen enqubweni yokuhlanganisa umanyolo ohlanganisiwe
Ingqikithi yokuqina kwenqubo yokuhlanganisa umanyolo ohlanganisiwe ikakhulukazi okuqukethwe kwamanzi amaningi okubangelwa amanzi adonsa i-urea yomthombo we-nitrogen. Ngokwemishini, ukuqala kanye nesivinini "sokushisa kancane" kwamanyolo ohlanganisiwe akukhuphuki ngokwanda kokuqukethwe kwe-ammonium nitrate kanye ne-potassium chloride. Isibonelo, ingxube equkethe i-80% ammonium nitrate kanye ne-20% potassium chloride ayishi, kodwa iqukethe ingxube ye-30% diatomaceous earth, i-55% ammonium nitrate, kanye ne-15% potassium chloride ikhiqiza "ukusha kancane" okunamandla.
Izinhlayiya zomanyolo ezihlanganisiwe ezine-urea njengomthombo we-nitrogen zine-hygroscopicity ephezulu kanye nephuzu eliphansi lokuthambisa; i-biuret kanye nama-adducts akheka kalula uma izinga lokushisa liphezulu; i-urea izoncibilikiswa uma izinga lokushisa liphezulu, okuholela ekulahlekelweni yi-ammonia.
Lokhu kuyadingeka ukuze kuxazululwe okuqukethwe kwamanzi amaningi okubangelwa amanzi athola umthombo we-nitrogen. Nciphisa umthombo we-nitrogen Uma kukhona i-calcium superphosphate, i-phosphorus encibilikayo emanzini izobola; lapho kukhiqizwa umanyolo we-calcium superphosphate ohlanganisiwe we-urea-common, i-common superphosphate kumele iphathwe kusengaphambili, njenge-ammoniation, engasusa ama-adducts. Khiqiza, noma wengeze i-calcium magnesium phosphorus ukuze kuncishiswe i-asidi yamahhala ye-superphosphate, bese uguqula amanzi amahhala abe ngamanzi ekristalu, uthuthukise ikhwalithi yomkhiqizo, noma wengeze i-ammonium sulfate, enganciphisa umswakama womkhiqizo oqediwe futhi iqinise ubulukhuni bomkhiqizo oqediwe; lapho kukhona i-chlorine Lapho i-ammonium iguqulwa, i-urea ne-chlorine zakha i-adduct, ekhulisa i-crystallization, okwenza kube lula ukuthi umanyolo ovuselelayo uhlanganise umkhiqizo oqediwe ngesikhathi sokugcina; ngakho-ke, umanyolo we-common one-urea njengomthombo we-nitrogen kufanele unake kakhulu inqubo yokomisa nokupholisa.Isibonelo, izinga lokushisa lokomisa akufanele libe phezulu kakhulu, isikhathi sokomisa akufanele sibe side kakhulu, okuqukethwe komswakama okuchazwe endinganisweni yekhwalithi kufanele kuhlangatshezwane nakho, into yokuncibilika ngesikhathi senqubo yokukhiqiza kufanele igwenywe, futhi akufanele kugcinwe ukubhakwa ngesikhathi senqubo yokugcina.
Lokhu okungenhla yizizathu zomswakama ophezulu enqubweni yokwakheka kwe-granulation ye-granulator yomanyolo ohlanganisiwe, okubangela ukuqina. Indlela eyinhloko yokugwema ukuqina ukusebenzisa uhlelo lokomisa. Ukwelashwa kwezinto zokwakha kusengaphambili, ukwengeza izakhi kanye nezinye izindlela, ukuze kufezwe ukucubungula kanye nokulondolozwa okungabhubhisi izinhlayiya zomanyolo ohlanganisiwe.
Isikhathi sokuthunyelwe: Disemba 10-2022
