Ma granulators odziwika bwino a feteleza amaphatikizapo machulukidwe amitundu iwiri komanso ma granulator osalala (mphete).Akamakonza feteleza wophatikizika, ma granulator amenewa amatha kuwonjezera zinthu za nayitrogeni malinga ndi zosowa zake, ndipo ena amagwiritsa ntchito urea monga magwero a zinthu za nayitrogeni, zomwe zimatha kuyamwa mosavuta chinyezi mumpweya ndikupangitsa kuti tinthu tambirimbiri tigwirizane.Chifukwa chake, nthawi zambiri zimanenedwa kuti chowonjezera chapawiri-roll extrusion granulator ndi ufa wowuma wowuma, womwe umakhala ndi zotsatira zabwino pakukonza ma granules azinthu zopangira ndi chinyezi chochepera 10%.Pazinthu zonyowa, ukadaulo wofunikira woletsa kuuma uyenera kuchitidwa.Posungira feteleza granules munali chinyezi monga zopangira feteleza pawiri, m'pofunika kupewa kuumitsa.
Mfundo ndi madzi chofunika pawiri feteleza extrusion granulator processing granules
Mfundo ntchito ya extrusion granulator makamaka ufa youma monga waukulu zopangira.Pamene chiwombankhangacho chikuphwanyidwa, mbali ina ya particles imaphwanyidwa, ndipo ufa wabwino umadzaza mipata pakati pa particles.Pachifukwa ichi, ngati maunyolo a mankhwala aulere pamtunda wongopangidwa kumene sangathe Kudzaza Mwachangu ndi maatomu kapena mamolekyu ochokera kumlengalenga wozungulira, malo omwe angopangidwa kumene amakumana ndi mnzake ndikupanga zomangira zolimba.Kwa extrusion ya wodzigudubuza, wodzigudubuza khungu ali ozungulira poyambira, amene extruded mu mawonekedwe ozungulira, ndi particles extruded ndi lathyathyathya (mphete) kufa ndi columnar.Extrusion granulation imafuna chinyezi chochepa.Ngati chinyezi chili chochuluka, m'pofunika kuwonjezera njira yowumitsa ku teknoloji yopangira.
Njira yothetsera zovuta za mtundu wa mayamwidwe a nayitrogeni mumtundu wa feteleza wophatikizika
Mphepete mwa kuphatikizika kwa feteleza wophatikizika wa feteleza nthawi zambiri amakhala ndi madzi ochulukirapo chifukwa cha gwero la nayitrogeni urea lomwe limamwa madzi.Kunena zamakanika, kuyambitsa ndi kuthamanga kwa "kuwotcha pang'onopang'ono" kwa feteleza wapawiri sikuwonjezeka ndi kuchuluka kwa ammonium nitrate ndi potaziyamu chloride.Mwachitsanzo, chisakanizo chokhala ndi 80% ammonium nitrate ndi 20% potaziyamu kolorayidi sichiwotcha, koma chimakhala ndi Kusakaniza kwa 30% diatomaceous earth, 55% ammonium nitrate, ndi 15% potaziyamu chloride kumapanga "kuwotcha pang'onopang'ono".
Manyowa a feteleza okhala ndi urea monga gwero la nayitrogeni amakhala ndi hygroscopicity komanso malo ochepetsetsa otsika;biuret ndi zowonjezera zimapangidwira mosavuta pamene kutentha kuli kwakukulu;urea adzakhala hydrolyzed pamene kutentha kwambiri, kuchititsa imfa ya ammonia.
Izi ndizofunikira kuti muchepetse kuchuluka kwamadzi komwe kumachitika chifukwa cha gwero la nayitrogeni.Chepetsani magwero a nayitrogeni Pamene calcium superphosphate ilipo, phosphorous yosungunuka m'madzi imawonongeka;popanga urea-wamba kashiamu superphosphate pawiri feteleza, wamba superphosphate ayenera pretreated, monga ammoniation, amene angathe kuthetsa addducts Pangani, kapena kuwonjezera kashiamu phosphorous magnesium neutralize ndi asidi ufulu wa superphosphate, ndi kutembenuza madzi aulere kukhala madzi akristalo, kusintha mankhwala. khalidwe, kapena kuwonjezera ammonium sulphate, zomwe zingachepetse chinyezi cha mankhwala omalizidwa ndi kulimbitsa kuuma kwa mankhwala omalizidwa;pamene pali klorini Pamene ammonium imatembenuzidwa, urea ndi klorini amapanga adduct, zomwe zimawonjezera crystallization, zomwe zimapangitsa kuti feteleza wotsitsimutsayo akhale wosavuta kuyambitsa agglomeration ya mankhwala omalizidwa panthawi yosungirako;Choncho, pawiri fetereza ndi urea monga gwero nayitrogeni ayenera kupereka chidwi chapadera pa kuyanika ndi kuzirala ndondomeko.Mwachitsanzo, kutentha kwa kuyanika sikuyenera kukhala kokwera kwambiri, nthawi yowumitsa sikuyenera kukhala yayitali kwambiri, chinyezi chomwe chimatchulidwa pamtundu wapamwamba chiyenera kukwaniritsidwa, kusungunuka kwa nthawi yopangira kupanga kuyenera kupewedwa, ndipo palibe caking iyenera kusungidwa. pa nthawi yosungirako.
Zomwe zili pamwambazi ndizomwe zimayambitsa chinyezi chambiri mu granulation ndondomeko ya pawiri feteleza granulator, amene amayambitsa compaction.Njira yayikulu yopewera kuphatikizika ndiyo kugwiritsa ntchito makina owumitsa.Prepreatment wa zipangizo, Kuwonjezera zinthu ndi njira zina, kuti kuzindikira processing ndi sanali zowononga kuteteza pawiri feteleza particles.
Nthawi yotumiza: Dec-10-2022
