Kuyini i-PP granulation? Indlela ye-powder granulation?

I-granulation iwukuphula imikhiqizo yepulasitiki elahliwe bese uyishisa bese uyincibilikisa ibe yizinhlayiya, usayizi kanye nobhontshisi we-mung cishe okufanayo, ukuze ukwazi ukusebenzisa lezi zinhlayiya zepulasitiki ukwenza imikhiqizo emisha yepulasitiki, lokhu kubizwa ngokuthi i-granulation. Iyini i-PP granulation? Indlela ye-powder granulation?

I-PP yikhodi yesiNgisi ye-polypropylene, i-PP granulation ibhekisela emikhiqizweni yepulasitiki ye-polypropylene engcolile (ikakhulukazi izikhwama zepulasitiki ezilukiwe) ngemva kokusebenzisa kabusha, ukuhlanza,ipulasitiki extruderIzinhlayiya zepulasitiki ze-polypropylene ezenziwe kabusha ngepulasitiki, zingaxutshwa zibe izinto ezintsha ze-polypropylene ukuze zisetshenziswe noma zisetshenziswe zodwa ngqo.

Njengamanje, ubuchwepheshe bokwelapha impuphu buhlukaniswe nge-granulation emanzi, i-granulation ebilisayo, i-pressure molding, i-spray kanye ne-dispersive mist, i-hot melting molding njalo njalo.

1. Indlela yokuxuba amanzi
I-Wet granulation iwukufaka uketshezi noma i-binder ethile ku-solid fine powder bese uyixuba ngendlela efanele, ukuze uketshezi kanye ne-solid fine powder kuhlangane eduze, kukhiqize amandla ahlangene futhi kwakheke ama-aggregates.

2. Indlela yokubilisa i-granulation
Indlela yokubilisa i-granulation iwukusebenzisa umoya ovela phansi kwemishini ukuntanta izinhlayiya zempuphu kanye nesibhamu sokufafaza esingaphezulu siphume odakeni ngemuva kokuthintana ngokugcwele bese sihlanganiswa sibe izinhlayiya.

3. Indlela yokubumba ingcindezi
Indlela yokwakha ingcindezi iwukunciphisa izinto ezimpushana zempuphu endaweni ethile, bese ziyicindezela zibe sesimweni esiminyene ngokusebenzisa amandla angaphandle. Ngokusho kohlelo olungokoqobo lwamandla angaphandle asetshenziswayo, indlela yokubumba ingcindezi ingahlukaniswa ngezigaba ezimbili, okungukuthi, indlela yokubumba kanye nendlela yokuphuma.

4. Indlela yokufutha nokusabalalisa inkungu
Imfucumfucu yokufafaza kanye neyokusabalalisa isetshenziselwa ukwenza izinto eziwuketshezi noma eziwuketshezi oluyingxenye esimweni esihlakazeke kakhulu zibe yizinhlayiya eziqinile ngqo emishinini ethile.

5. Indlela yokwenza ukuncibilika okushisayo
Indlela yokubumba eshisayo iwukusebenzisa izici zamaphuzu okuncibilika aphansi omkhiqizo (ngokuvamile ngaphansi kuka-300℃), izinto ezincibilikisiwe, ngokusebenzisa ukujiya okukhethekile, ukuze ukujiya kwawo kukhanye kube yisimo esidingekayo seshidi, umcu, ibhulokhi, i-hemispherical njalo njalo.

Ukwakheka kwe-powder kuyinqubo ethinteka yizici eziningi; ukukhethwa kobuchwepheshe obufanele bokwakheka kwe-powder kudinga ukucabangela izici eziningi:

1. Izici zezinto zokusetshenziswa

2. Izidingo zamandla okucubungula
Umthamo wesikhathi seyunithi yezindlela ezahlukene ze-granulation uyahlukahluka kakhulu, ngakho-ke izindleko zokutshalwa kwezimali kwemishini kanye nokucubungula kumele kucatshangelwe.

3. Ukusatshalaliswa kosayizi wezinhlayiya zomkhiqizo
Usayizi wezinhlayiya zemikhiqizo etholakala ngezindlela ezahlukene zokuhlanganisa uketshezi uyahlukahluka kakhulu, njengosayizi wezinhlayiya ezincane zokuhlanganisa uketshezi olufuthwayo, kuyilapho usayizi wezinhlayiya zemikhiqizo yokuhlanganisa uketshezi olucindezelwe ungaba mkhulu, ngakho-ke indlela yokuhlanganisa uketshezi kufanele ikhethwe ngokwendlela yokuhlanganisa edingekayo.

4. Ukuma kwezinhlayiya zomkhiqizo
Imikhiqizo etholakala ngokuxuba i-granulation kanye ne-fluidization granulation yizinhlayiya eziyindilinga ezinesimo esingajwayelekile. Ukuzigoqa zibe yibhola kungathola i-sphere ebushelelezi; Kuzinhlayiya ezivamile ezinesimo esikhethekile, kuyadingeka ukusebenzisa i-compression kanye ne-extrusion granulation. Ukukhethwa kokwakheka kwezinhlayiya zomkhiqizo kufanele kucabangele izidingo kanye nokulula kwezinqubo ezilandelayo.

5. Amandla ezinhlayiya zomkhiqizo
Inqubo yokomisa izoholela ekukhiqizweni kothuli futhi ngenxa yalokho ayifaneleki ukugoqwa kwempuphu enobuthi noma ezinye izimpuphu eziyingozi. Inqubo yokumanzisa, ngakolunye uhlangothi, idinga ukomiswa ngemva kokugoqwa kwempuphu futhi ichitha ingxenye yesinyibilikisi. Eminye imithi ayihlangani namanzi, noma iphindwe kabusha ukuze yakhe ezinye izakhiwo ngesikhathi sokomisa, okungafaneleki izinqubo zokumanzisa.

6. Izinketho ezomile/ezimanzi

7. Ukuminyana kanye nobuningi bezinhlayiya zomkhiqizo
I-porosity kanye nobuningi bezinhlayiyana kulezi zinkomba ezimbili nakho kuthinta ngqo amandla omkhiqizo, njengokusetshenziswa ekukhiqizeni izinhlayiya ze-catalyst carrier, i-porosity kanye namandla ngesikhathi esifanayo kuthuthukisa ukuphikisana. Usayizi we-porosity kanye nobuningi bungalungiswa ngemingcele yokusebenza kwenqubo.