Qhov xwm txheej ntawm kev lag luam:
(1) Kev lag luam sab saud
Cov khoom siv tseem ceeb uas yuav tsum tau siv rau kev tsim cov khoom sivcellulose ethersuav nrog paj rwb ua kom zoo (lossis ntoo pulp) thiab qee cov tshuaj yaj tshuaj feem ntau, xws li propylene oxide, methyl chloride, kua caustic soda, caustic soda, ethylene oxide, toluene thiab lwm yam khoom siv pabcuam. Cov lag luam kev lag luam sab saud ntawm kev lag luam no suav nrog paj rwb ua kom zoo, cov lag luam tsim ntoo pulp thiab qee cov lag luam tshuaj lom neeg. Kev hloov pauv ntawm tus nqi ntawm cov khoom siv raw tseem ceeb saum toj no yuav muaj ntau qib ntawm kev cuam tshuam rau tus nqi tsim khoom thiab tus nqi muag ntawm cellulose ether.
Tus nqi ntawm cov paj rwb ua kom zoo yog qhov siab heev. Piv txwv li, piv txwv li, thaum lub sijhawm tshaj tawm, tus nqi ntawm cov paj rwb ua kom zoo suav txog 31.74%, 28.50%, 26.59% thiab 26.90% ntawm tus nqi muag khoom ntawm cov khoom siv hauv tsev cellulose ether. Kev hloov pauv ntawm tus nqi ntawm cov paj rwb ua kom zoo yuav cuam tshuam rau tus nqi tsim khoom ntawm cellulose ether. Cov khoom siv tseem ceeb rau kev tsim cov paj rwb ua kom zoo yog cov paj rwb linters. Cov paj rwb linters yog ib qho ntawm cov khoom lag luam hauv cov txheej txheem tsim paj rwb, feem ntau yog siv los tsim cov paj rwb pulp, paj rwb ua kom zoo, nitrocellulose thiab lwm yam khoom. Tus nqi siv thiab kev siv cov paj rwb linters thiab paj rwb sib txawv heev, thiab nws tus nqi qis dua li paj rwb, tab sis nws muaj qee qhov kev sib raug zoo nrog kev hloov pauv ntawm tus nqi ntawm paj rwb. Kev hloov pauv ntawm tus nqi ntawm cov paj rwb linters cuam tshuam rau tus nqi ntawm cov paj rwb ua kom zoo.
Qhov kev hloov pauv sai ntawm tus nqi ntawm cov paj rwb ua kom zoo yuav muaj ntau qib sib txawv ntawm kev cuam tshuam rau kev tswj hwm cov nqi tsim khoom, tus nqi khoom thiab kev ua lag luam ntawm cov tuam txhab hauv kev lag luam no. Thaum tus nqi ntawm cov paj rwb ua kom zoo siab thiab tus nqi ntawm cov ntoo pulp pheej yig, txhawm rau kom txo tus nqi, cov ntoo pulp tuaj yeem siv los ua tus hloov pauv thiab ntxiv rau cov paj rwb ua kom zoo, feem ntau yog siv los tsim cov cellulose ethers nrog viscosity qis xws li tshuaj thiab cov khoom noj khoom haus cellulose ethers. Raws li cov ntaub ntawv los ntawm lub vev xaib ntawm Lub Chaw Haujlwm Saib Xyuas Kev Txheeb Xyuas Hauv Tebchaws, xyoo 2013, thaj chaw cog paj rwb hauv kuv lub tebchaws yog 4.35 lab hectares, thiab cov paj rwb hauv tebchaws yog 6.31 lab tons. Raws li cov ntaub ntawv los ntawm Tuam Tshoj Cellulose Industry Association, xyoo 2014, tag nrho cov khoom tsim tawm ntawm cov paj rwb ua kom zoo uas tsim los ntawm cov chaw tsim khoom loj hauv tsev ua paj rwb ua kom zoo yog 332,000 tons, thiab cov khoom siv raw muaj ntau heev.
Cov khoom siv tseem ceeb rau kev tsim cov khoom siv tshuaj graphite yog hlau thiab graphite carbon. Tus nqi ntawm hlau thiab graphite carbon yog tus nqi siab ntawm cov khoom siv tshuaj graphite. Kev hloov pauv ntawm tus nqi ntawm cov khoom siv no yuav muaj qee qhov cuam tshuam rau tus nqi tsim khoom thiab tus nqi muag khoom ntawm cov khoom siv tshuaj graphite.
(2) Kev lag luam downstream ntawm cellulose ether
Raws li "kev lag luam monosodium glutamate", cellulose ether muaj feem tsawg ntawm cellulose ether thiab muaj ntau yam kev siv. Cov kev lag luam downstream tau tawg ua ntau qhov chaw hauv lub neej hauv lub tebchaws kev lag luam.
Feem ntau, kev lag luam tsim kho thiab kev lag luam vaj tse yuav muaj qee qhov cuam tshuam rau qhov kev loj hlob ntawm kev thov rau cov khoom siv hauv tsev cellulose ether. Thaum kev lag luam tsim kho hauv tsev thiab kev lag luam vaj tse loj hlob sai, kev thov hauv khw hauv tsev rau cov khoom siv hauv tsev cellulose ether loj hlob sai. Thaum qhov kev loj hlob ntawm kev lag luam tsim kho hauv tsev thiab kev lag luam vaj tse qeeb qeeb, qhov kev loj hlob ntawm kev thov rau cov khoom siv hauv tsev cellulose ether hauv kev lag luam hauv tsev yuav qeeb qeeb, uas yuav ua rau kev sib tw hauv kev lag luam no nce ntxiv thiab ua kom cov txheej txheem ntawm kev ciaj sia ntawm cov tuam txhab hauv kev lag luam no sai dua.
Txij li xyoo 2012, nyob rau hauv cov ntsiab lus ntawm kev qeeb hauv kev lag luam kev tsim kho hauv tsev thiab kev lag luam vaj tsev, qhov kev thov rau cov khoom siv hauv tsev qib cellulose ether hauv kev lag luam hauv tsev tsis tau hloov pauv ntau. Cov laj thawj tseem ceeb yog: 1. Qhov loj me ntawm kev lag luam kev tsim kho hauv tsev thiab kev lag luam vaj tsev yog loj, thiab tag nrho cov kev thov hauv kev lag luam yog qhov loj heev; lub khw muag khoom tseem ceeb ntawm cov khoom siv hauv tsev qib cellulose ether maj mam nthuav dav los ntawm thaj chaw tsim kho kev lag luam thiab thawj- thiab thib ob-tier nroog mus rau thaj chaw nruab nrab thiab sab hnub poob thiab thib peb-tier nroog, kev loj hlob ntawm kev thov hauv tsev thiab kev nthuav dav qhov chaw; 2. Tus nqi ntawm cellulose ether ntxiv suav rau qhov feem pua tsawg ntawm tus nqi ntawm cov khoom siv hauv tsev. Tus nqi siv los ntawm ib tus neeg siv khoom yog me me, thiab cov neeg siv khoom tau tawg, uas yog qhov yooj yim rau kev thov nruj. Tag nrho cov kev thov hauv kev lag luam downstream yog qhov ruaj khov; 3. Kev hloov pauv tus nqi hauv khw yog ib qho tseem ceeb uas cuam tshuam rau kev hloov pauv qauv ntawm cov khoom siv hauv tsev qib cellulose ether. Txij li xyoo 2012, tus nqi muag khoom ntawm cov khoom siv hauv tsev qib cellulose ether tau poob qis heev, uas ua rau tus nqi ntawm cov khoom nruab nrab mus rau qib siab poob qis, nyiam ntau tus neeg siv khoom los yuav thiab xaiv, ua rau muaj kev thov rau cov khoom nruab nrab mus rau qib siab, thiab ua rau kev thov ua lag luam thiab qhov chaw nqi rau cov qauv ib txwm muaj.
Qib kev loj hlob ntawm kev lag luam tshuaj thiab kev loj hlob ntawm kev lag luam tshuaj yuav cuam tshuam rau qhov kev thov rau cov tshuaj cellulose ether. Kev txhim kho ntawm cov neeg lub neej thiab kev lag luam zaub mov uas tau tsim kho zoo yog qhov ua rau kev xav tau ntawm kev lag luam rau cov khoom noj cellulose ether.
Cov qauv kev loj hlob ntawm cellulose ether
Vim muaj qhov sib txawv ntawm cov qauv hauv kev thov ua lag luam rau cellulose ether, cov tuam txhab uas muaj zog thiab qhov tsis muaj zog sib txawv tuaj yeem nyob ua ke. Vim muaj qhov sib txawv ntawm cov qauv ntawm kev thov ua lag luam, cov tuam txhab tsim khoom hauv tsev cellulose ether tau siv cov tswv yim sib tw sib txawv raws li lawv lub zog, thiab tib lub sijhawm, lawv yuav tsum nkag siab txog kev txhim kho thiab kev coj ua ntawm kev ua lag luam zoo.
(1) Kev ua kom ruaj khov ntawm cov khoom zoo tseem yuav yog qhov tseem ceeb ntawm kev sib tw ntawm cov tuam txhab cellulose ether
Cellulose ether suav txog ib feem me me ntawm cov nqi tsim khoom ntawm feem ntau cov lag luam downstream hauv kev lag luam no, tab sis nws muaj kev cuam tshuam loj rau qhov zoo ntawm cov khoom. Cov neeg siv khoom nruab nrab mus rau qib siab yuav tsum dhau los ntawm kev sim mis ua ntej siv qee hom cellulose ether. Tom qab tsim cov mis ruaj khov, feem ntau nws tsis yooj yim los hloov lwm hom khoom, thiab tib lub sijhawm, cov kev xav tau siab dua tau muab tso rau ntawm qhov ruaj khov zoo ntawm cellulose ether. Qhov xwm txheej no muaj ntau dua hauv cov teb siab xws li cov chaw tsim khoom siv loj hauv tsev thiab txawv teb chaws, cov tshuaj excipients, cov khoom noj khoom haus ntxiv, thiab PVC. Txhawm rau txhim kho kev sib tw ntawm cov khoom, cov chaw tsim khoom yuav tsum xyuas kom meej tias qhov zoo thiab ruaj khov ntawm ntau pawg ntawm cellulose ether uas lawv muab tuaj yeem tswj tau ntev, yog li tsim kom muaj lub koob npe nrov hauv kev lag luam zoo dua.
(2) Kev txhim kho qib ntawm cov khoom siv thev naus laus zis yog qhov kev coj ua ntawm cov tuam txhab cellulose ether hauv tsev
Nrog rau kev siv tshuab thev naus laus zis ntau zuj zus ntawmcellulose ether, qib siab dua ntawm kev siv tshuab ua haujlwm zoo dua yog qhov zoo rau kev txhim kho kev sib tw ntawm cov tuam txhab thiab kev tsim kom muaj kev sib raug zoo nrog cov neeg siv khoom ruaj khov. Cov tuam txhab cellulose ether uas paub zoo hauv cov tebchaws tsim kho feem ntau siv txoj kev sib tw ntawm "ntsib cov neeg siv khoom loj + tsim kev siv thiab kev siv downstream" los tsim cov cellulose ether siv thiab cov qauv siv, thiab teeb tsa cov khoom raws li cov teb thov sib txawv los pab cov neeg siv khoom siv, thiab los txhawb kev thov ua lag luam downstream. Kev sib tw ntawm cov tuam txhab cellulose ether hauv cov tebchaws tsim kho tau mus los ntawm kev nkag mus rau kev sib tw hauv thaj chaw ntawm kev siv tshuab.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024