TORONTO - Cov khoom siv xa khoom nyoos ntsib ntau yam nyuaj hauv kev muab cov log tsheb kom zoo thiab ntau cov khoom uas lawv xav tau, tab sis lawv tau npaj ntau dua los ua kom tau raws li cov kev sib tw no.
Qhov no yog cov lus sawv cev los ntawm peb cov khoom siv nyoos - carbon dub, ntuj roj hmab thiab hluavtaws roj hmab - tau rau cov neeg tuaj koom ntawm "Tsav Tsheb Mus Rau Yav Tom Ntej," 2019 Log Tsheb & Roj Hmab Tshaj Tawm tau txhawb nqa los ntawm Tire thiab Rubber Association ntawm Canada.
Kev lag luam carbon dub yuav luag tsis paub txog ntawm lub sijhawm carbon dub thawj zaug tau tsim xyoo 1891, raws li Robert Rist, tus thawj coj hauv cheeb tsam, cov khoom lag luam tswj hwm, cov ntaub ntawv txhawb nqa ntawm Cabot Corp.
Mr. Rist tau hais tias "Tus txheej txheem thaum ntxov tau txaus ntshai heev, thiab tsis muaj kev ruaj ntseg ntau," Mr. Txawm li cas los xij, ob qho tib si kev nyab xeeb thiab kev ua tau zoo tshaj qhov tseem ceeb, tshwj xeeb tshaj yog tom qab carbon carbon thawj zaug tau ntxiv rau cov log tsheb hauv xyoo 1912. Qhov ntxiv ntxiv, Mr. Rist tau hais, nce lub neej lub log tsheb los ntawm 10,000 mais.
Tam sim no, muaj ntau tshaj 40 qib ntawm cov pa roj carbon dub, txhua tus qib sib txawv ntawm qhov ua tau zoo rau cov ntawv thov log tsheb, nws hais.
Zoo dua treadwear, qis dua yob tsis kam, txhim kho kev ua haujlwm, kev siv peev qis dua, txo cov khoom pov tseg thiab qis dua carbon dioxide hneev yog tsuas yog qee qhov zoo ntawm cov pa roj carbon dub muaj rau cov log tsheb, nws hais.
Txawm li cas los xij, ib puag ncig cov kev cai, kev cuam tshuam rau cov tsiaj nyeg pub thiab cov khoom / xav tau hluav taws xob yog txhua qhov tso lub zog ntawm cov pa roj carbon dub, nws hais.
Kev pom zoo cov cai rau kev ua kom huv ib puag ncig ntawm US Environmental Protection Agency thiab carbon black manufacturers tau muab cov nyiaj los ntawm kev nthuav dav hauv kev lag luam, raws li Mr. Rist.
Canada cov pa roj carbon dioxide emissions cov kev pab cuam nyob hauv Paris Accord tseem yuav cuam tshuam rau cov neeg tsim cov pa roj carbon dub, nrog rau Ontario tseem tab tom txiav txim rau cov pa roj carbon dioxide-pa tawm, nws hais.
Cov pa roj carbon dub muaj peb qhov khoom noj tseem ceeb, raws li Mr. Rist: cov roj ua kom huv, cov tshuaj tiv thaiv ethylene thiab cov nplauv roj. Muaj cov kev lag luam ib puag ncig thiab cov nqi ntawm txhua qhov, nws tau hais, thiab International Maritime Association tus tswv cuab MARPOL 2020 pom zoo, txo cov leej faj rau txoj kev siv roj rau lub nkoj loj, cog lus tias yuav nce nqi rau cov roj decant.
Thaum hais tias cov roj siv roj tsis yog cov tsiaj nyeg pub rau cov pa roj carbon dub, nws hais tias, MARPOL 2020 yuav cuam tshuam qhov sib txawv ntawm cov roj thiab cov roj decant.
Qhov yuav tshwm sim tau ntawm tag nrho cov no, nws tau hais tias: "Kev lag luam log tsheb tau tshaj tawm tias kev lag luam carbon carbon dub."
Nws hais tias muaj xya lub log tsheb tshiab tau qhib lossis tab tom yuav qhib hauv North America, uas tsis muaj qhov sib thooj li cov pa roj carbon dub muaj peev xwm, nws hais ntxiv.
Teb chaws Asmeskas cov roj carbon kev lag luam dub ua haujlwm ntawm 90% lub peev xwm nrog tsis muaj lub peev xwm tshiab tuaj tom ntej no, nws hais.
Txawm hais tias qhov kev nqis peev tseem ceeb xav tau los khaws nrog cov kev cov nyom hauv ib puag ncig, kev lag luam carbon carbon yog qhov kev hloov pauv tshiab hauv nws cov ntaub ntawv, kev tsim khoom thiab qauv lag luam, raws li Mr. Rist.
Nws hais tias "Cabot tau mob siab koom ua lag luam ua tswv yim tshiab txhawm rau ua kom tiav cov kev sib tw ntawm kev ua tau zoo thiab muaj peev xwm,"
Cov roj hmab hauv ntuj yog qhov tseem ceeb hauv cov tsev neeg, kev lag luam, tsheb thauj mus los thiab khoom siv kho mob, raws li Dennis Corson, tus lwm thawj coj, muag thiab kev ua haujlwm ntawm Alan L. Grant Polymer.
Mr. Corson tau hais tias "Ob feem peb ntawm cov roj hmab siv mus rau cov log tsheb, tab sis ntau lwm qhov kev thov yuav tsis muaj yog tias tsis muaj nws," Mr.
Qhov no ua rau ebb thiab ntws ntawm NR cov khoom siv thiab xav tau tshwj xeeb teeb meem rau cov tuam ntxhab thiab cov neeg siv khoom nyob ntawm cov khoom siv, nws hais.
NR cov nqi tau nce txog $ 6 nyob rau ib phaus hauv xyoo 2010, ua rau cov neeg cog qoob loo cog cov roj hmab, raws li Mr. Corson. Tsib rau xya xyoo tom qab, cov ntoo txig, tsim ib qho kev pab them nyiaj tshaj yam tsis muaj qhov xav tau ntawm qhov xav tau, nws hais.
Tus nqi Sagging tau muaj kev puas tsuaj rau NR cov neeg tsawg, uas tsim tau 90% ntawm lub ntiaj teb cov roj hmab, raws li Mr. Corson.
Nws muaj 1.5 lab tus neeg ua haujlwm me hauv Indonesia ib leeg, nws hais. Cov neeg nruab nrab hais txog nruab nrab hauv tebchaws Indonesia muaj thaj av tsib-daim av thiab ua rau $ 69 rau ib hlis piv rau nruab nrab Indonesian nyiaj hli nruab nrab ntawm $ 161, nws hais.
Nws hais tias "Ntuj roj hmab ib puag ncig yog tsis ruaj," nws hais. "Tus nqi tau nce mus txog 10-xyoo qis thiab yog 40% qis dua qhov 10-xyoo nruab nrab."
Nyob rau cov xwm txheej no, ntau tus neeg cog qoob loo NR tau hloov mus rau lwm cov qoob loo, xws li cov qos ntoo lossis xibtes, lossis tawm hauv kev ua liaj ua teb zoo ib yam, nws hais.
Yawg Corson tau hais tias kev muab cov khoom siv NR thoob ntiaj teb yuav maj mam nce mus txog 14.8 lab mentsis xyoo 2021 txij li 14.3 lab xyoo 2019.
NR xav tau yuav muab khoom sib luag nyob rau xyoo ntawd thiab kev nce qib ntawm kev xav tau qhia pom me ntsis ntawm kev ua haujlwm qeeb, nws hais.
Mr. Corson tau hais tias "Kev cog qoob loo tshiab tsis txaus kom tau raws li qhov kev thov nce ntxiv," Mr. "Tsis ntev no los tom qab ntawv yuav muaj kev tsis txaus."
Lub caij no, thoob ntiaj teb kev loj hlob nyob rau hauv 2020 yog kwv yees ntawm 3.6%, nws tau hais tias. Tuam Tshoj muaj kwv yees txog $ 1.6 txhiab txheej txheem tsim vaj tse hauv tej hauj lwm thiab lub teb chaws Yelemees kuj muaj kwv yees li $ 325 billion.
Nws tau hais tias "Kuv vam tias Asmeskas yuav ua nws los kho nws cov kev thiab cov choj," nws hais.
Corson hais txog kev caij tsheb-sib qhia thiab kev mus los tau zoo ua rau cov mais muaj zog ntau thiab xav tau ntau cov log tsheb hloov thiab qhov chaw, raws li Mr. Corson.
Tsis tas li, thov kom muaj kev ruaj khov ntawm NRES thiab pob tshab yog hloov cov khoom xa tuaj rau NR irrevocably, nws hais.
"Nqe thiab kev ua tau zoo tsis txaus lawm," nws hais. "Muaj qhov xav tau ntawm cov khoom ntim ruaj khov tsim khoom.
Mr. Corson tau hais tias "Qhov cuam tshuam ntawm kev thauj khoom yog qhov kev txhawj xeeb vim tias tus nqi qis thiab qhov hloov pauv qeeb dua," Mr. "Peb yuav tsum xyuas kom cov neeg ua liaj ua teb raug them kom txaus."
Ze li ib feem peb ntawm lub log tsheb tshiab los ntawm kev hnyav yog hluavtaws roj hmab, thiab styrene-butadiene roj hmab (SBR) yog ib qho tseem ceeb ntawm cov nplauv hluavtaws hauv cov log tsheb tsim khoom, raws li Karthina Kizhakke Vellate, tus kws tshaj lij soj xyuas kev lag luam ntawm Beroe Inc.
Xya Caum feem pua ntawm SBR cov khoom tawm mus rau cov log tsheb thiab tsheb, raws li Ms. Vellate. Txawm li cas los xij, SBR kev ua lag luam yog saib xyuas, nrog lub peev xwm dhau qhov xav tau los ntawm ze li 2 lab metric tons thiab qhov sib xyaw txhua xyoo nce ntawm 2% mus rau 3%, Ms. Vellate tau hais.
Butadiene tseem yog lub hauv paus tseem ceeb tsav tom qab SBR kev ua lag luam, nws tau hais. Cov khoom noj pub rau 5% ntawm cov khoom sib koom los ntawm ntim los ntawm naphtha tawg, tab sis SBR muaj kev sib tw rau butadiene muab los ntawm ABS thiab NBR, nws tau hais.
Nws tau hais tias "Butadiene cov neeg tsim khoom tau poob qis rau SBR thiab siv qhov muaj txiaj ntsig ntawm qhov kev tuav pov hwm nruj raws li kev thov los ntawm ABS thiab NBR loj hlob hauv 2016 thiab 2017," nws hais.
Tus nqi tsis zoo muaj nyob hauv lub khw butadiene, raws li Ms. Vellate hais.
"Tus tswv lag luam butadiene zoo nkaus li saib xyuas ntau dua, tab sis nws tsis yog," nws hais.