Ipamba itunganijwe - gufungura-gusya-etherifike-kutabogama-gutandukanya-gukaraba-gutandukanya, gukama-guhindagura-gupakira-gufungura ipamba irangiye: ipamba itunganijwe irakingurwa kugirango ikureho icyuma, hanyuma ihindurwe. Ipamba yatunganijwe neza iri muburyo bwa poro, kandi ubunini bwayo ni mesh 80 naho kohereza ni 100%. Bitabaye ibyo, biroroshye guhuriza hamwe hamwe mugihe cyo kubyitwaramo no kugabanya imikorere ya etherification.
Alkalisation: Ongeramo ifu yifu yatunganijwe nyuma yo gufungura mumashanyarazi ya inert, hanyuma uyikoreshe hamwe na alkali namazi yoroshye kugirango ubyimba lattike yipamba yatunganijwe, ifasha kwinjira mumyuka ya molekile ya etherifingi, kandi itezimbere uburinganire bwimikorere ya etherification. . Alkali ikoreshwa muri alkalisation ni hydroxide yicyuma cyangwa shingiro kama. Ingano ya alkali yongeweho (kubwinshi, kimwe hepfo) irikubye inshuro 0.1-0,6 iy'ipamba inoze, naho amazi yoroshye akubye inshuro 0.3-1.0 z'ipamba inoze; umusemburo wa inert ni uruvange rwa alcool na hydrocarubone, kandi ingano ya inert solvent yongeweho ni ipamba nziza. Inshuro 7-15: inert solvent irashobora kandi kuba inzoga hamwe na atome ya karubone 3-5 (nka alcool, propanol), acetone. Irashobora kandi kuba hydrocarbone ya alifatique na hydrocarbone nziza; ubushyuhe bugomba kugenzurwa muri 0-35 ° C mugihe cya alkalisation; igihe cya alkalisation ni nka 1h. Guhindura ubushyuhe nigihe bishobora kugenwa ukurikije ibisabwa nibikoresho nibicuruzwa.
Etherification: Nyuma yo kuvura alkalisation, mubihe bya vacuum, etherification ikorwa hongerwamo imiti ya etherifying, kandi agent ya etherifying ni okiside ya propylene. Kugirango ugabanye ikoreshwa rya agent ya etherifying, mugikorwa cya etherification, agent ya etherifying yongewemo inshuro ebyiri, umubare wongeyeho bwa mbere wikubye inshuro 1-3.5 ugereranije nipamba yatunganijwe, hamwe numubare wuzuye wongeyeho. ni inshuro 1.5-4 z'ipamba inoze. ibihe. Nyuma yo kongeramo imiti ya etherifingi kunshuro yambere, koga ku bushyuhe bwa ≤30 ° C kuri 45min-90min, hanyuma ushushe kugeza kuri 50-100 ° C kuri etherifike, igihe ni 1-5h, hanyuma ukonje kugeza kuri ≤30 ° C, Ongeramo etherified Jing kunshuro ya kabiri hanyuma ukangure, igihe cyo gukurura ni 30-120min, hanyuma ushushe kugeza? ? ? Kora etherification, igihe ni 1-4h, muriki gihe, ipamba inoze hamwe na etherifying agent ikora neza kugirango itange H-HPC.
Pulverisation no gupakira: ibicuruzwa byumye byavumbuwe ubu birasunikwa kandi birashungura. Ingano yubunini bwibicuruzwa byavunitse kandi byashizwemo nubu bushakashatsi ni 40 mesh naho kohereza ni 10096, cyangwa ukurikije ibyo abakoresha bakeneye. Noneho ubipakire mu ruganda.
Igihe cyo kohereza: Ukwakira-13-2022