Cov Txheej Txheem Ntau Lawm thiab Kev Kawm Ntawm Pvc

Txoj kev lag luam ntau lawm ntawm polyvinyl chloride (PVC) tsuas yog cia siab rau ntawm ob txoj kev: cov txheej txheem carbide carbide thiab cov qauv ethylene. Ob txoj kev kawm no txhua tus muaj lawv tus kheej cov yam ntxwv, uas txiav txim cov peev txheej faib thiab cov qauv kev lag luam nyob rau ntau lub teb chaws thiab cov cheeb tsam.

I. Calcium Carbide Txuj Ci rau PVC

Cov txheej txheem carbium carbide cuam tshuam nrog cov kev tawm tsam ntawm calcium carbide (Cac₂) los tsim cov tshuaj chlorine (VCM), uas yog ces polymerized kom tau txais PVC.

Qhov Zoo

Kev vam khom rau Tuam Tshoj tus muaj ntau thiab limestone peev txheej, tus kheej - tus nqi txaus ntawm cov saw muaj peev xwm siab.

Cov nqi peev yog tsawg heev, ua rau nws haum rau kev teeb tsa hauv thaj chaw hauv cheeb tsam.

Ib yam uas tab kaum

Lub zog noj yog qhov siab. Kev siv hluav taws xob ntau rau ib tuj ntawm pvc deb tshaj ntawm cov ethylene txoj kev.

Tus {{- cov khoom thiab cov pa roj carbon emissions loj, thiab lub siab ntawm kev tiv thaiv ib puag ncig yog pom tseeb.

Cov khoom lag luam zoo yog qhov tseem ceeb me ntsis rau qhov uas muaj ethylene txoj kev nyob rau hauv cov nqe lus ntawm pob tshab, thermal stability thiab lwm yam.

Ii. Ethylene txoj kev PVC

Lub ethylene siv ethylene, ib by {- Cov khoom ntawm petrochemicals, raws li cov khoom siv ntawm petrochemicals, raws li cov khoom siv raw nrog cov tshuaj chlorine los ua vcm, uas yog ces polymerized los tsim PVC.

Qhov Zoo

Cov txheej txheem tau paub tab, nrog kev siv hluav taws xob tsawg thiab ob peb los ntawm - cov khoom.

Cov khoom nta siab siab thiab ruaj khov, ua rau nws haum rau high -}}}}}}}}}}}}}}}}}}}}} kev siv.

Ib yam uas tab kaum

Cov nplai nqis peev yog qhov loj thiab qhov kev cia siab ntawm cov petrochemical saw yog siab.

Cov nqi ntawm cov khoom siv raw tau yooj yim heev los ntawm kev hloov pauv hauv cov roj hauv thoob ntiaj teb thiab roj av.

III. Polymerization Txheej Txheem

Tsis hais txog ntawm cov khoom siv raw, muaj ntau txoj kev polymerization rau PVC:

Kev Ncua Ntawv Polymerization (s-}}}}}}}} account້ນ rau kwv yees li 80%, nrog cov khoom sib txuam, haum rau cov khoom nyuaj.

Emulsion Polascerization (e -} Tus poj niam zoo, haum rau ntawm cov tawv nqaij, duab yeeb yaj kiab, thiab lwm yam.

Bulk polymerization: tsawg dua thov, tsuas yog siv rau cov khoom lag luam pob tshab.

IV. Kev Qhia Txuj Ci Technologies

Ntsuab thiab qis {{-} Kev txuag hluav taws xob: Kev txuag hluav taws xob thiab kev siv nyiaj ntau, thiab ua kom zoo dua ntawm cov txheej txheem carbium carbide.

Tshiab hom catalyst: Txhim kho hloov dua siab tshiab, txo qis los ntawm - cov khoom, thiab txhim kho cov khoom lag luam zoo.

Siab -}}}} Kev tswj kev tswj kom tau raws li kev kho mob {{{{}} tiv taus thiab lwm yam xav tau.

Lub ntsiab

Cov txheej txheem calcium carbide yog qhov tsim nyog rau cov khoom siv -}}} Yav tom ntej, raws li cov kev txo cov carbon kom nce thiab siab} {} {{3} {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{Ua lub ntsiab ua qhov tseem ceeb tshaj plaws hauv kev lag luam.