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 lag luam 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 cov nqi, cov ntoo pulp tuaj yeem siv los ua tus hloov pauv thiab ntxiv rau cov paj rwb ua kom zoo, feem ntau yog rau kev tsim cov cellulose ethers nrog viscosity qis xws li tshuaj thiab qib zaub mov.cov cellulose ethersRaws 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 ntawm kuv lub tebchaws yog 4.35 lab hectares, thiab cov paj rwb hauv tebchaws tau tsim tawm yog 6.31 lab tons. Raws li cov ntaub ntawv los ntawm Tuam Tshoj Cellulose Industry Association, xyoo 2014, tag nrho cov paj rwb zoo uas tsim los ntawm cov chaw tsim khoom paj rwb zoo hauv tebchaws 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.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2024