Polypropylene (PP), raws li ib qho ntawm cov khoom siv polyolefin nrog cov zis ntau tshaj plaws, tsuas muaj propylene li nws cov khoom siv raw. Hauv kev ua haujlwm niaj hnub ntawm polypropylene units, ntau lub tuam txhab tau them nyiaj ntau dua rau cov catalysts thiab cov txheej txheem cov txheej txheem, tab sis yooj yim saib lub sij hawm ntev - cuam tshuam los ntawm propylene monomer zoo. Cov kab tsis huv hauv propylene tsis tsuas yog ua rau lub neej ua haujlwm luv luv xwb, tab sis kuj ua rau batch kev hloov pauv hauv cov khoom siv polypropylene, ua rau muaj ntau yam teeb meem xws li cov hmoov tshauv siab, cov khoom tsis ruaj khov, thiab xim sib txawv. Tsab ntawv xov xwm no tsom mus rau cov xwm txheej ntawm daim ntawv thov ntawm propylene hauv polypropylene ntau lawm, tshuaj xyuas cov txheej txheem thiab cov khoom zoo uas coj los ntawm siab -cov propylene zoo, thiab muab cov khoom siv raw cov ntaub ntawv xaiv rau cov chaw tsim khoom polypropylene.
I. Daim ntawv thov scenarios ntawm propylene nyob rau hauv txawv polypropylene ntau lawm kab
Raws li polymerization monomer, propylene tuaj yeem ua ke nrog cov txheej txheem sib txawv los tsim peb qib tseem ceeb: homopolymer polypropylene, thaiv copolymer polypropylene, thiab random copolymer polypropylene. Ib qho me me ntawm ethylene tsuas yog ntxiv los ua ib qho auxiliary comonomer.
Polypropylene polymerization txheej txheem muab faib ua kua -theem bulk txheej txheem thiab roj-theem fluidized txaj txheej txheem. Tsis hais txog ntawm txoj kev, propylene yog qhov yooj yim monomer.
Homopolymer Polypropylene (PPH)
Homopolymer PP yog tau los ntawm catalytic polymerization ntawm ntshiab propylene monomer. Nws muaj zog rigidity thiab zoo heev kub kuj, thiab feem ntau yog siv rau txhaj tshuaj molded qhov chaw, yas woven hnab, tsis yog - woven fabrics, thiab yeeb nkab raw khoom. Tag nrho cov tshuaj tiv thaiv tsuas yog pub nrog polymerization-qib propylene yam tsis ntxiv lwm cov comonomers, yog li kev ruaj ntseg ntawm propylene muaj pes tsawg leeg yog qhov tseem ceeb tshwj xeeb.
Random Copolymer Polypropylene (PPR)
Feem ntau raws li propylene nrog me me ntawm ethylene koom nrog hauv copolymerization, cov khoom siv pob tshab tau txhim kho thiab qis -kub toughness yog txhim kho. Nws yog cov khoom siv tseem ceeb rau cov thawv ntim khoom noj, PPR cov kav dej kub, thiab ntim khoom kho mob. Nrog propylene ua cov khoom siv tseem ceeb, cov impurities ntau dhau tuaj yeem cuam tshuam rau pob tshab thiab cuam tshuam.
Block Copolymer Polypropylene (PPB)
Propylene homopolymerization yog thawj zaug, tom qab ntawd ib qho ethylene -propylene copolymer roj hmab theem yog qhia, ntsuas rigidity thiab qis -kub los tiv thaiv. Nws yog dav siv hauv cov khoom siv tsheb, cov khoom siv hauv tsev, thiab cov thawv xa khoom xa tuaj.
Ntau lub chaw ua haujlwm polypropylene hloov ntawm qib sib txawv rau kev tsim khoom yooj yim. Kev hloov pauv ntawm cov khoom raw propylene muaj pes tsawg leeg yuav ncua lub sijhawm hloov pauv qib thiab nce cov khoom pov tseg.
Raws li ib tug polymerization-qib propylene qhov chaw muab khoom, ZL Zog cia siab rau cov kev kho kom raug txuas mus ntxiv kom ruaj khov tsim cov polymerization-qib propylene, nruj me ntsis tswj cov teeb meem tsis zoo xws li propylene, diolefins, thiab tag nrho cov sulfur. Cov khoom lag luam batch qhia qhov sib txawv ntawm qhov sib txawv me me, hloov mus rau qhov hloov pauv hloov pauv xav tau ntawm cov khoom siv txuas ntxiv polypropylene. Txhua batch los nrog ib daim ntawv ntsuam xyuas ua tiav, ua kom yooj yim cov ntaub ntawv raw khoom tuaj xyuas rau cov lag luam petrochemical.
II. Core Performance Advantages of High-Quality Polymerization-Qib propylene hauv Polypropylene Production
Polymerization-qib propylene nrog kev ua raws cai purity thiab tswj cov impurities tuaj yeem tiv thaiv polymerization catalysts, txo cov khoom siv hloov pauv, ua kom ruaj khov polypropylene mechanical indicators, thiab ua tiav ntev - voj voog ua haujlwm ruaj khov ntawm chav tsev.
Propylene polymerization cia siab rau Ziegler-Natta catalysts thiab metallocene catalysts. Sulfides, alkynes, dej, thiab oxygen yog tag nrho cov catalyst tshuaj lom. High - zoo propylene coj ntau yam txiaj ntsig:
Txuas Catalyst Kev Ua Haujlwm Cycle, txo cov nqi tsim khoom
Taug qab sulfides thiab propyne mus tas li tshuaj lom catalysts, nce catalyst unit noj. Ruaj khov qis- impurity propylene tuaj yeem txo cov tshuaj catalyst dosing zaus thiab txhim kho lub sijhawm ua haujlwm.
Stabilize Polypropylene Melt Flow Rate (MFR)
Kev hloov pauv hauv propylene muaj pes tsawg leeg cuam tshuam ncaj qha rau cov tshuaj tiv thaiv polymerization, ua rau yaj qhov ntsuas kom hloov pauv, thiab cov khoom siv hauv qab ntawm cov yas ua kom muaj kev sib tsoo thaum lub sij hawm kos duab thiab cov pwm tsis zoo thaum txhaj tshuaj molding.
Txo cov khoom tshauv cov ntsiab lus, txhim kho qib Polypropylene
Cov impurities uas koom nrog cov tshuaj tiv thaiv sab nrauv nce cov hmoov tshauv cov ntsiab lus, cuam tshuam cov khoom tiav zoo ntawm cov qib pob tshab, siab -kawg tsis yog- cov ntaub npuag, thiab zaub mov- tiv tauj qib PP.
Shorten Qib Hloov Sijhawm
Nrog tsis tu ncua ruaj khov propylene muaj pes tsawg leeg, cov khoom siv hloov pauv tau txo qis thaum lub tsev hloov pauv ntawm homopolymer thiab random copolymer qib, txhim kho kev siv cov khoom siv raw.
Cov lus hauv qab no sib piv qhov cuam tshuam ntawm kev tsim nyog polymerization- qib propylene thiab qis dua propylene ntawm polypropylene ntau lawm:
| Qhov taw qhia Dimension | Raws li Polymerization-Qib Propylene (Dedicated rau Polymerization units) | propylene nrog ntau dhau impurities (tsis siv rau PP ntau lawm) | Direct Production Consequences |
|---|---|---|---|
| Propylene Purity | Ntau dua lossis sib npaug li 99.5% | Hauv qab no tus qauv, muaj ntau ntawm unsaturated impurities | Txo cov tshuaj tiv thaiv kev hloov pauv, txo cov zis |
| Propyne, Diolefins | Kev tswj nruj nruj rau sab sauv txwv | Cov ntsiab lus siab | Catalyst lom, ua haujlwm sai sai |
| Tag nrho cov ntsiab lus Sulfur | Kev tswj nruj nruj ntawm qib ppm | Cov ntsiab lus sulfur ntau dhau | Kev ruaj ntseg catalyst deactivation |
| Khoom ruaj khov | Kev hloov pauv me me hauv qhov ntsuas ntsuas thiab cov khoom siv kho tshuab | Loj batch kev ua tau zoo sib txawv | Downstream neeg tsis txaus siab, downgraded muag |
| Chav ua haujlwm | Ntev - voj voog txuas ntxiv ua tau | Cov txheej txheem nquag hloov pauv | Ntxiv cov khoom hloov pauv, nce zog siv |
III. Hard Requirements for Key Propylene Raw Material Indicators in Polypropylene Production
Cov chav tsev polypropylene tsis tuaj yeem siv cov khoom siv propylene zoo tib yam. Polymerization-qib tus qauv propylene yuav tsum tau yuav, nrog rau kev saib xyuas tseem ceeb ntawm peb pawg loj ntawm cov khoom tsis zoo: alkynes, sulfides, thiab noo noo.
Kev lag luam-general polymerization-qib propylene core tswj ntsuas: propylene purity Ntau dua lossis sib npaug li 99.5%; Propyne + propadiene Tsawg dua lossis sib npaug li 5 ppm; Tag nrho cov sulfur Tsawg dua lossis sib npaug ntawm 1 ppm; Dej cov ntsiab lus nruj me ntsis tswj.
Ordinary industrial propylene tsuas yog haum rau cov tshuaj zoo synthesis, nrog xoob impurity ntsuas. Ib zaug pub rau hauv lub tshuab hluav taws xob polypropylene polymerization, nws yuav ua rau muaj kev poob qis hauv catalyst hauv lub sijhawm luv luv, ua rau muaj kev hloov pauv ntau lawm.
Metallocene polypropylene cov kab ntau lawm muaj qhov yuav tsum tau nruj dua, nrog rau kev txhim kho cov qauv kev tswj xyuas ntxiv rau cov kab ntsig polar impurities hauv propylene.
ZL Energy paub qhov txawv ntawm ob pawg ntawm kev tsim khoom thiab kev cia khoom-kev thauj mus los rau polymerization- qib propylene thiab cov khoom siv dav dav propylene, nrog rau cov tso tsheb hlau luam ywj pheej kom tsis txhob muaj cov khoom sib xyaw. Rau siab -kawg metallocene PP cov kab ntau lawm, impurity Internal Control indicators, As yuav ua tau ntxiv optimized kom tau raws li raw khoom nkag tus qauv ntawm high-kawg polyolefin qhauj.
IV. Cov Ntsiab Lus Qhia Txog Cov Lus Pom Zoo rau Propylene Procurement thiab Siv los ntawm Polypropylene Enterprises
Lub hauv paus ntawm kev ruaj khov rau cov khoom siv polypropylene yog nyob rau hauv kev ruaj ntseg polymerization - qib propylene mov. Chav tsev tus nqi yuav tsum tsis yog qhov sib piv nkaus xwb; kev tsom xam yuav tsum yog nyob rau hauv impurity stability thiab ntev -lub sij hawm muab guarantee muaj peev xwm.
Rau cov tshiab tsim polypropylene units thiab metallocene PP cov kab ntau lawm, ua qhov tseem ceeb rau kev txheeb xyuas tus neeg muag khoom propylene impurity hauv kev tswj cov qauv thiab tsis lees txais cov khoom sib xyaw propylene uas tsis paub keeb kwm;
Tsim kom muaj kev ua tiav cov qauv thiab kev sim ua tiav, tsom mus rau kev soj ntsuam alkyne, tag nrho cov sulfur, thiab cov ntsuas dej noo kom tsis txhob muaj qhov phom sij txaus ntshai los ntawm qhov chaw;
Rau cov chaw tsim khoom uas tsim ntau qib polypropylene nyob rau lub sijhawm ntev, ua qhov tseem ceeb ntawm cov tuam txhab tsim khoom uas muaj zog batch stability kom txo qis kev hloov pauv qib;
Npaj cov tso tsheb hlau luam thiab cov kav dej thauj mus los ua ntej, xyuas kom zoo kom qhuav thiab ua kom huv si, thiab tiv thaiv kev taw qhia thib ob ntawm cov dej noo thiab impurities thaum lub sij hawm thauj propylene.
Yog tias lub tuam txhab tsim khoom lag luam polypropylene tab tom tshuaj xyuas cov khoom siv propylene lossis ua cov khoom sib piv cov khoom siv raw, ZL Zog tuaj yeem muab cov qauv rau kev kuaj xyuas thiab muab cov pa roj txhawb kev daws teeb meem raws li cov txheej txheem hauv chav tsev.
