Thonje loyeretsedwa—kutsegula—kukonza—kutentha—kuchepetsa—kulekanitsa—kutsuka—kulekanitsa, kuumitsa—kupukuta—kukonza—kutseka—kutseka thonje lomalizidwa: thonje loyeretsedwa limatsegulidwa kuti lichotse chitsulo, kenako n’kuphwanyidwa. Thonje loyeretsedwa lophwanyidwa lili ngati ufa, ndipo kukula kwake ndi ma mesh 80 ndipo mphamvu yake yotumizira ndi 100%. Kupanda kutero, n’zosavuta kusonkhana pamodzi panthawi yochitapo kanthu ndikuchepetsa mphamvu ya etherification.
Alkalization: Onjezani thonje loyengedwa ndi ufa mutatsegula mu chosungunulira chosagwira ntchito, ndikuchiyatsa ndi madzi a alkali ndi ofewa kuti muwonjezere latisi ya thonje loyengedwa, lomwe limapangitsa kuti mamolekyu a etherifying agent alowe, ndikuwonjezera kufanana kwa etherification reaction. Alkali yomwe imagwiritsidwa ntchito mu alkaliization ndi hydroxide yachitsulo kapena maziko achilengedwe. Kuchuluka kwa alkali komwe kumawonjezeredwa (ndi kulemera, komwe kuli pansipa) ndi kuwirikiza 0.1-0.6 kuposa thonje loyengedwa, ndipo kuchuluka kwa madzi ofewa ndi kuwirikiza 0.3-1.0 kuposa thonje loyengedwa; chosungunulira chosagwira ntchito ndi chisakanizo cha mowa ndi hydrocarbon, ndipo kuchuluka kwa chosungunulira chosagwira ntchito komwe kumawonjezeredwa ndi thonje loyengedwa. Nthawi 7-15: chosungunulira chosagwira ntchito chingakhalenso mowa wokhala ndi maatomu 3-5 a kaboni (monga mowa, propanol), acetone. Chingakhalenso aliphatic hydrocarbons ndi aromatic hydrocarbons; kutentha kuyenera kulamulidwa mkati mwa 0-35°C panthawi ya alkaliization; nthawi ya alkaliization ndi pafupifupi ola limodzi. Kusintha kwa kutentha ndi nthawi kumatha kudziwika malinga ndi zofunikira za zinthu ndi chinthucho.
Kuthira: Pambuyo pa chithandizo cha alkalizing, pansi pa vacuum conditions, etherification imachitika powonjezera etherifying agent, ndipo etherifying agent ndi propylene oxide. Pofuna kuchepetsa kugwiritsa ntchito etherifying agent, mu etherification process, etherifying agent imawonjezedwa kawiri, kuchuluka kwa choyamba ndi kuwirikiza 1-3.5 kuposa thonje loyengedwa, ndipo kuchuluka kwa zowonjezera ziwiri ndi kuwirikiza 1.5-4 kuposa thonje loyengedwa. Mukawonjezera etherifying agent koyamba, sakanizani kutentha kwa ≤30°C kwa mphindi 45-90, kenako tenthetsani mpaka 50-100°C kuti etherifying ichitike, nthawi ndi maola 1-5, kenako ziziziritseni mpaka ≤30°C. Onjezani etherified Jing kachiwiri ndikusakaniza, nthawi yosakaniza ndi mphindi 30-120, kenako tenthetsani mpaka ? ? ? Chitani etherification, nthawi ndi maola 1-4, panthawiyi, thonje loyengedwa ndi wothandizira etherifying amachitapo kanthu mokwanira kuti apange H-HPC.
Kupukutira ndi kulongedza: chinthu chouma cha chipangizochi chimapukutidwa ndi kusefedwa. Kukula kwa tinthu tating'onoting'ono ta chipangizochi chopukutidwa ndi kusefedwa ndi 40 mesh ndipo transmittance ndi 10096, kapena malinga ndi zosowa za ogwiritsa ntchito. Kenako chinyamuleni kuchokera ku fakitale.
Nthawi yotumizira: Okutobala-13-2022