Chii chinonzi PP granulation? Nzira ye granulation yeupfu?

Kupwanya mapurasitiki (granulation) zvinoreva kupwanya marara epurasitiki wobva waapisa woanyungudutsa kuita zvidimbu, saizi nebhinzi dzemung zvakafanana, kuitira kuti ugone kushandisa zvidimbu zvepurasitiki izvi kugadzira zvigadzirwa zvitsva zvepurasitiki, izvi zvinonzi granulation. Chii chinonzi PP granulation? Nzira yekuunganidza hupfu?

PP ndiyo kodhi yeChirungu yepolypropylene, PP granulation inoreva marara epurasitiki epolypropylene (zvikuru mabhegi akarukwa epurasitiki) mushure mekudzokorodza, kuchenesa,epurasitiki extruderZvidimbu zvepurasitiki zve polypropylene zvakagadziriswazve purasitiki, zvinogona kusanganiswa kuita zvinhu zvitsva zve polypropylene kuti zvishandiswe kana kushandiswa zvakananga chete.

Parizvino, tekinoroji yekurapa hupfu yakakamurwa kuita granulation yakanyorova, granulation inofashaira, kuumbwa kwekumanikidzwa, kupfapfaidza nekuparadzira mhute, kuumbwa kwekunyungudutsa kunopisa nezvimwewo.

1. Nzira yekuisa granulation yakanyorova
Kunyorova kwemvura kunoreva kupinza mvura kana kuti binder muupfu hwakasimba uye kuhukurunga zvakakodzera, kuitira kuti mvura neupfu hwakasimba zvive pedyo, zvichigadzira simba rakabatana uye kugadzira ma aggregates.

2. Nzira yekubikisa granulation
Nzira yekufashaidza granulation ndeyekushandisa mhepo inobva pasi pemuchina kuti ibudise zvidimbu zveupfu nepfuti yekupfapfaidza yepamusoro kubva mumatope mushure mekusangana zvizere uye zvobatanidzwa kuita zvidimbu.

3. Nzira yekuumba kumanikidzwa
Nzira yekugadzira kumanikidzwa ndeyekuganhurira zvinhu zveupfu zvakachekwa munzvimbo yakatarwa, uye kuzvidzvanya kuita kuti zvive zvakasviba nekushandisa simba rekunze. Zvichienderana nehurongwa hwesimba rekunze rinoshandiswa, nzira yekugadzira kumanikidzwa inogona kukamurwa muzvikamu zviviri, kureva, nzira yekugadzira uye nzira yekubvisa.

4. Nzira yekupfapfaidza nekuparadzira mhute
Mhute yekupfapfaidza neyokupararira inoshandiswa kugadzira zvinhu zvine mvura kana kuti semi-liquid zviri mumamiriro ekupararira zvakanyanya kuva zvidimbu zvakasimba zvakananga mumichina chaiyo.

5. Nzira yekunyungudutsa inopisa
Nzira yekunyungudutsa inopisa ndeyekushandisa hunhu hwepasi hwekunyungudutsa hwechigadzirwa (kazhinji pasi pe300℃), chinhu chakanyungudutswa, kuburikidza nekunyunguduka kwakakosha, kuitira kuti kunyunguduka kwacho kuite crystallization muchimiro chinodiwa chepepa, strip, block, hemispherical nezvimwewo.

Kuumbwa kwepoda (powder granulation) inzira inokanganiswa nezvinhu zvakawanda; kusarudzwa kwetekinoroji yakakodzera yekuumbwa kwepoda kunofanirwa kufungwa nezvezvinhu zvakawanda:

1. Hunhu hwezvinhu zvakagadzirwa

2. Zvinodiwa pakugadzirisa zvinodiwa
Kugona kwenguva yeyuniti yenzira dzakasiyana dzegranulation kunosiyana zvikuru, saka mari yekudyara nekushandisa michina inofanira kufungwa nezvayo.

3. Kugoverwa kwehukuru hwechigadzirwa
Hukuru hwezvimedu zvezvigadzirwa zvinowanikwa nenzira dzakasiyana dzegranulation hunosiyana zvikuru, senge saizi diki yegranulation yekupfapfaidza, nepo saizi yezvimedu zvegranulation yakamanikidzwa inogona kuva yakakura, saka nzira yegranulation inofanira kusarudzwa zvichienderana nenzira inodiwa yegranulation.

4. Chimiro chechinhu
Zvigadzirwa zvinowanikwa nekusanganisa granulation uye fluidization granulation zvinhu zvakatenderera zvine chimiro chisina kurongeka. Kutenderedza kuita bhora kunogona kuita bhora rakatsetseka; Kune zvikamu zvakajairwa zvine chimiro chakakosha, zvakakosha kushandisa compression uye extrusion granulation. Kusarudzwa kwekugadzirwa kwezvikamu zvechigadzirwa kunofanirwa kufunga nezvezvinodiwa uye nyore kwemaitiro anotevera.

5. Simba rechinhu ichi
Kuoma kwemvura kuchaita kuti guruva ribude uye nekudaro harina kukodzera kuumbwa kweupfu hune chepfu kana humwe hune njodzi. Kuoma kwemvura, kune rumwe rutivi, kunoda kuomeswa mushure mekuumbwa kwemvura uye kunoparadza chimwe chezvinonyungudutsa. Mimwe mishonga haibatani nemvura, kana kudzokororwa kuita zvimwe zvinhu panguva yekuomeswa, izvo zvisina kukodzera kuumbwa kwemvura.

6. Sarudzo dzemvura yakaoma/yakanyorova

7. Kuwanda kwezvikamu zvechigadzirwa uye kuwanda kwazvo
Particle porosity uye density muzviratidzo izvi zviviri zvinokanganisawo zvakananga simba rechigadzirwa, senge rinoshandiswa mukugadzira catalyst carrier particles, porosity uye simba panguva imwe chete kuvandudza inyaya mbiri dzinopesana. Saizi ye porosity uye density inogona kugadziriswa nemaitiro ekushanda kwe process.