Cellulose ether: cov khoom siv raw sab saud muaj qhov cuam tshuam loj dua, thiab kev lag luam sab hauv qab tab tom loj hlob.
Cellulose ether yog ib hom khoom siv polymer ntuj tsim, uas muaj cov yam ntxwv emulsification thiab suspension. Hauv ntau hom, hydroxypropyl methyl cellulose ether uas yog HPMC yog qhov siab tshaj plaws, qhov siv dav tshaj plaws, nws cov khoom tsim tawm tau nce sai.
Nyob rau xyoo tas los no, tau txais txiaj ntsig los ntawm kev loj hlob ntawm kev lag luam hauv tebchaws, kev tsim cov cellulose ether ntawm peb lub tebchaws nce xyoo los ntawm xyoo. Tib lub sijhawm, nrog rau kev txhim kho ntawm kev tshawb fawb thiab thev naus laus zis hauv tsev, qhov xav tau thawj zaug los ntawm kev xa tawm ntau ntawm cov cellulose ether siab heev tam sim no maj mam paub txog qhov chaw, thiab kev xa tawm ntawm cov cellulose ether hauv tsev tab tom nce ntxiv. Cov ntaub ntawv qhia tias txij lub Ib Hlis mus txog rau lub Kaum Ib Hlis 2020, Tuam Tshoj tau xa tawm 64,806 tons ntawm cellulose ether, nce 14.2% xyoo rau xyoo, siab dua li tag nrho xyoo 2019.
Nyob rau xyoo tas los no, tau txais txiaj ntsig los ntawm kev loj hlob ntawm kev lag luam hauv tebchaws, kev tsim cov cellulose ether ntawm peb lub tebchaws nce xyoo los ntawm xyoo. Tib lub sijhawm, nrog rau kev txhim kho ntawm kev tshawb fawb thiab thev naus laus zis hauv tsev, qhov xav tau thawj zaug los ntawm kev xa tawm ntau ntawm cov cellulose ether siab heev tam sim no maj mam paub txog qhov chaw, thiab kev xa tawm ntawm cov cellulose ether hauv tsev tab tom nce ntxiv. Cov ntaub ntawv qhia tias txij lub Ib Hlis mus txog rau lub Kaum Ib Hlis 2020, Tuam Tshoj tau xa tawm 64,806 tons ntawm cellulose ether, nce 14.2% xyoo rau xyoo, siab dua li tag nrho xyoo 2019.
Cellulose ether cuam tshuam los ntawm cov nqi paj rwb sab saud
Cov khoom siv tseem ceeb rau cellulose ethers suav nrog cov khoom ua liaj ua teb thiab cov khoom siv hav zoov, suav nrog paj rwb zoo, thiab cov khoom siv tshuaj lom neeg, suav nrog propylene oxide. Cov khoom siv raw ntawm paj rwb zoo yog paj rwb luv luv cashmere, thiab paj rwb luv luv cashmere feem ntau yog tsim tawm hauv Shandong, Xinjiang, Hebei thiab Jiangsu. Qhov chaw ntawm paj rwb fleece muaj ntau heev thiab muaj txaus.
Paj rwb suav nrog feem ntau hauv cov qauv kev lag luam ntawm kev ua liaj ua teb, thiab nws tus nqi raug cuam tshuam los ntawm cov xwm txheej ntuj tsim thiab kev muab khoom thoob ntiaj teb thiab kev thov. Ib yam li ntawd, propylene oxide, chloromethane thiab lwm yam khoom siv tshuaj kuj raug cuam tshuam los ntawm cov nqi roj av thoob ntiaj teb. Txij li thaum cov khoom siv raw suav nrog feem ntau hauv cov qauv nqi ntawm cellulose ether, qhov kev hloov pauv ntawm tus nqi khoom siv raw cuam tshuam ncaj qha rau tus nqi muag ntawm cellulose ether.
Yuav kom daws tau qhov teeb meem ntawm tus nqi, cov tuam txhab tsim cellulose ether feem ntau hloov qhov teeb meem mus rau kev lag luam downstream, tab sis qhov cuam tshuam ntawm kev hloov pauv yog cuam tshuam los ntawm qhov nyuaj ntawm cov khoom siv thev naus laus zis, ntau yam khoom thiab qib ntawm tus nqi khoom thiab tus nqi ntxiv. Feem ntau, cov lag luam uas muaj cov teeb meem kev siv tshuab siab, cov khoom nplua nuj thiab tus nqi ntxiv siab muaj qhov zoo dua thiab yuav tswj tau qib nyiaj tau los ruaj khov. Txwv tsis pub, cov lag luam yuav tsum ntsib qhov teeb meem ntawm tus nqi ntau dua. Tsis tas li ntawd, yog tias qhov chaw sab nraud tsis ruaj khov thiab qhov ntau ntawm cov khoom hloov pauv loj, cov lag luam raw khoom sab saud txaus siab xaiv cov neeg siv khoom downstream nrog cov khoom loj thiab muaj zog, kom ntseeg tau tias muaj txiaj ntsig zoo rau kev lag luam thiab txo cov kev pheej hmoo. Yog li ntawd, qhov no txwv txoj kev loj hlob ntawm cov lag luam cellulose ether me me rau qee qhov.
Cellulose ether yog ib hom khoom siv polymer ntuj tsim, uas muaj cov yam ntxwv emulsification thiab suspension. Hauv ntau hom, hydroxypropyl methyl cellulose ether uas yog HPMC yog qhov siab tshaj plaws, qhov siv dav tshaj plaws, nws cov khoom tsim tawm tau nce sai.
Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, kev lag luam xav tau kev pab cuam txuas ntxiv mus, thiab qhov kev thov kev pab cuam txuas ntxiv mus yuav nthuav dav mus tas li, thiab kev thov kev pab cuam txuas ntxiv mus tseem muaj kev loj hlob ruaj khov. Hauv cov qauv kev lag luam txuas ntxiv ntawm cellulose ether, cov ntaub ntawv tsim kho, kev rho tawm roj, zaub mov thiab lwm yam teb nyob hauv txoj haujlwm tseem ceeb. Ntawm lawv, cov khoom siv tsim kho yog cov lag luam neeg siv khoom loj tshaj plaws, suav txog ntau dua 30%.
Kev lag luam kev tsim kho yog qhov chaw siv khoom loj tshaj plaws ntawm HPMC
Hauv kev lag luam kev tsim kho, cov khoom HPMC ua lub luag haujlwm tseem ceeb hauv kev sib txuas, kev khaws dej thiab lwm yam teebmeem. Tom qab sib tov me ntsis ntawm HPMC nrog cov cement mortar, qhov viscosity, tensile thiab shear zog ntawm cement mortar, mortar thiab binder tuaj yeem nce ntxiv, yog li txhim kho kev ua tau zoo ntawm cov ntaub ntawv tsim kho, txhim kho qhov zoo ntawm kev tsim kho thiab kev siv tshuab ua haujlwm zoo. Tsis tas li ntawd, HPMC kuj yog ib qho tseem ceeb retarder rau kev tsim khoom thiab kev thauj mus los ntawm cov pob zeb ua lag luam, uas ua lub luag haujlwm hauv kev xauv dej thiab txhim kho cov khoom rheological ntawm cov pob zeb. Tam sim no, HPMC yog cov khoom tseem ceeb tshaj plaws cellulose ether siv rau hauv cov ntaub ntawv kaw tsev.
Kev lag luam tsim kho yog lub hauv paus tseem ceeb ntawm peb lub teb chaws txoj kev lag luam. Cov ntaub ntawv qhia tau tias thaj chaw tsim kho vaj tse tau nce ntxiv los ntawm 7.08 billion square meters hauv xyoo 2010 mus rau 14.42 billion square meters hauv xyoo 2019, uas yog qhov tsav tsheb loj hlob ntawm kev lag luam cellulose ether.
Kev lag luam vaj tsev tau nce siab zuj zus, thiab thaj chaw tsim kho thiab muag khoom tau nce siab txhua xyoo. Cov ntaub ntawv pej xeem qhia tau tias xyoo 2020, qhov kev poob qis txhua hli hauv thaj chaw tsim kho tshiab ntawm cov tsev lag luam tseem txuas ntxiv mus, poob qis 1.87% txhua xyoo, xyoo 2021 xav tias yuav txuas ntxiv mus rau qhov kev kho dua tshiab. Hauv ob lub hlis thawj zaug ntawm lub xyoo no, qhov kev loj hlob ntawm thaj chaw tsev lag luam tau rov qab mus rau 104.9%, qhov kev nce siab zoo.
Kev khawb roj
Kev lag luam kev pabcuam kev tshawb nrhiav drilling engineering raug cuam tshuam tshwj xeeb los ntawm kev nqis peev thoob ntiaj teb E&P, nrog kwv yees li 40% ntawm cov khoom lag luam tshawb nrhiav thoob ntiaj teb tau mob siab rau kev pabcuam kev tshawb nrhiav drilling.
Thaum lub sijhawm khawb roj thiab tsim khoom, cov kua dej drilling ua lub luag haujlwm tseem ceeb hauv kev nqa thiab dai cov chips, txhawb cov phab ntsa qhov thiab sib npaug ntawm lub zog tsim, txias thiab lubricating lub ntsis, thiab hloov cov hydrodynamic zog. Yog li ntawd, hauv kev ua haujlwm khawb roj, nws yog ib qho tseem ceeb heev kom tswj tau qhov av noo, viscosity, fluidity thiab lwm yam qhia ntawm cov kua dej drilling. Polyanionic cellulose, lossis PAC, tuaj yeem ua kom tuab, lubricate cov ntsis, thiab hloov cov hydrodynamic zog. Vim yog qhov nyuaj geological ntawm thaj chaw khaws roj thiab qhov nyuaj ntawm kev khawb, muaj ntau tus neeg siv PAC xav tau.
Kev lag luam tshuaj lom neeg
Cov cellulose ethers uas tsis yog ionic siv dav hauv kev lag luam tshuaj ua cov tshuaj ntxiv, xws li cov thickeners, dispersants, emulsifiers thiab film formers. Nws yog siv rau txheej zaj duab xis thiab nplaum ntawm cov ntsiav tshuaj tshuaj, thiab kuj tuaj yeem siv rau hauv kev ncua, kev npaj qhov muag, cov ntsiav tshuaj ntab thiab lwm yam. Vim yog qhov yuav tsum tau ua kom huv thiab viscosity ntawm cov khoom cellulose ether tshuaj, cov txheej txheem tsim khoom yog qhov nyuaj dua thiab cov txheej txheem ntxuav yog qhov nyuaj dua. Piv nrog rau lwm cov khoom cellulose ether, tus nqi sau qis dua, tus nqi tsim khoom siab dua, tab sis cov khoom ntxiv tus nqi kuj siab dua. Cov tshuaj ntxiv feem ntau yog siv rau hauv kev npaj tshuaj lom neeg, tshuaj patent Suav, cov khoom siv biological thiab biochemical thiab lwm yam khoom siv tshuaj.
Vim tias kev lag luam tshuaj pab tau pib lig, qib kev txhim kho tag nrho tsis zoo tam sim no, lub tshuab kev lag luam yuav tsum tau txhim kho ntxiv. Ntawm cov txiaj ntsig ntawm cov tshuaj hauv tsev, cov txiaj ntsig ntawm cov tshuaj pleev hauv tsev muaj feem tsawg ntawm 2% -3%, uas qis dua li cov tshuaj txawv teb chaws (kwv yees li 15%). Nws tuaj yeem pom tias tseem muaj qhov chaw zoo rau kev txhim kho cov tshuaj hauv tsev, uas xav tias yuav tsav tsheb loj hlob ntawm kev lag luam cellulose ether.
Lub sijhawm tshaj tawm: Lub Yim Hli-31-2022