Paj rwb zoo nkauj - qhib - alkalizing - etherifying - neutralizing - sib cais - ntxuav - sib cais, ziab - pulverizing - ntim - tiav paj rwb qhib: paj rwb zoo nkauj qhib kom tshem tawm hlau, thiab tom qab ntawd pulverized. Paj rwb zoo nkauj pulverized yog nyob rau hauv daim ntawv ntawm hmoov, thiab nws qhov loj me yog 80 mesh thiab qhov transmittance yog 100%. Txwv tsis pub, nws yooj yim rau agglomerate ua ke thaum lub sijhawm ua tshuaj tiv thaiv thiab txo qhov ua haujlwm etherification.
Alkalization: Ntxiv cov paj rwb ua kom zoo tom qab qhib rau hauv cov tshuaj inert, thiab ua kom nws nrog alkali thiab dej mos kom o lub lattice ntawm paj rwb ua kom zoo, uas yog qhov zoo rau kev nkag mus ntawm cov tshuaj etherifying, thiab txhim kho qhov sib xws ntawm cov tshuaj etherification. Cov alkali siv hauv alkalization yog hlau hydroxide lossis cov organic base. Qhov ntau ntawm alkali ntxiv (los ntawm qhov hnyav, tib yam hauv qab no) yog 0.1-0.6 npaug ntawm paj rwb ua kom zoo, thiab qhov ntau ntawm dej mos yog 0.3-1.0 npaug ntawm paj rwb ua kom zoo; cov tshuaj inert yog kev sib xyaw ntawm cawv thiab hydrocarbon, thiab qhov ntau ntawm cov tshuaj inert ntxiv yog paj rwb ua kom zoo. 7-15 npaug: cov tshuaj inert kuj tuaj yeem yog cawv nrog 3-5 carbon atoms (xws li cawv, propanol), acetone. Nws kuj tuaj yeem yog aliphatic hydrocarbons thiab aromatic hydrocarbons; qhov kub yuav tsum tau tswj hwm hauv 0-35 ° C thaum lub sijhawm alkalization; lub sijhawm alkalization yog li 1 teev. Qhov kev hloov kho ntawm qhov kub thiab lub sijhawm tuaj yeem txiav txim siab raws li qhov yuav tsum tau ua ntawm cov khoom siv thiab cov khoom.
Etherification: Tom qab kev kho alkalization, nyob rau hauv lub tshuab nqus tsev, etherification yog ua los ntawm kev ntxiv tus neeg sawv cev etherifying, thiab tus neeg sawv cev etherifying yog propylene oxide. Yuav kom txo qhov kev siv ntawm tus neeg sawv cev etherifying, hauv cov txheej txheem etherification, tus neeg sawv cev etherifying raug ntxiv ob zaug, qhov ntau ntawm thawj qhov ntxiv yog 1-3.5 npaug ntawm cov paj rwb zoo, thiab tag nrho cov nyiaj ntawm ob qhov ntxiv yog 1.5-4 npaug ntawm cov paj rwb zoo. lub sijhawm. Tom qab ntxiv tus neeg sawv cev etherifying thawj zaug, do ntawm qhov kub ntawm ≤30 ° C rau 45 feeb-90 feeb, tom qab ntawd cua sov txog 50-100 ° C rau etherification, lub sijhawm yog 1-5 teev, thiab tom qab ntawd txias mus rau ≤30 ° C, Ntxiv etherified Jing rau lub sijhawm thib ob thiab do, lub sijhawm do yog 30-120 feeb, thiab tom qab ntawd cua sov txog ? ? ? Ua etherification, lub sijhawm yog 1-4 teev, lub sijhawm no, cov paj rwb zoo thiab tus neeg sawv cev etherifying teb tag nrho los tsim H-HPC.
Kev ua hmoov thiab ntim khoom: cov khoom qhuav ntawm qhov kev tsim kho tshiab no raug hmoov thiab sieved. Qhov loj me ntawm cov khoom pulverized thiab sieved ntawm qhov kev tsim kho tshiab no yog 40 mesh thiab qhov transmittance yog 10096, lossis raws li tus neeg siv xav tau. Tom qab ntawd ntim nws tawm ntawm lub Hoobkas.
Lub sijhawm tshaj tawm: Lub Kaum Hli-13-2022