K'hothone e hloekisitsoeng—e bulang—e alkalizing—e etherifying—e thiba—e arolang—e hlatsoang—e arolang, e omisang—e sila—e pakang—e qetile ho bula k'hothone: k'hothone e hloekisitsoeng e buloa ho tlosa tšepe, ebe e sila. K'hothone e hloekisitsoeng e silafalitsoeng e ka sebopeho sa phofo, 'me boholo ba likaroloana tsa eona ke letlooeng la 80 'me phetisetso ke 100%. Ho seng joalo, ho bonolo ho kopana hammoho nakong ea ts'ebetso ea karabelo le ho fokotsa bokhoni ba etherification.
Alkalization: Kenya k'hothone e hloekisitsoeng ka phofo ka mor'a ho e bula ka har'a solvent e sa sebetseng, 'me u e sebelise ka alkali le metsi a bonolo ho kokobetsa lera la k'hothone e hloekisitsoeng, e leng se thusang ho kenella ha limolek'hule tsa moemeli ea etherifying, le ho ntlafatsa ho tšoana ha karabelo ea etherification. Alkali e sebelisoang alkaliization ke hydroxide ea tšepe kapa motheo oa organic. Palo ea alkali e ekelitsoeng (ka boima, e tšoanang ka tlase) ke makhetlo a 0.1-0.6 a k'hothone e hloekisitsoeng, 'me palo ea metsi a bonolo ke makhetlo a 0.3-1.0 a k'hothone e hloekisitsoeng; solvent e sa sebetseng ke motsoako oa joala le hydrocarbon, 'me palo ea solvent e sa sebetseng e ekelitsoeng ke k'hothone e hloekisitsoeng. Makhetlo a 7-15: solvent e sa sebetseng e ka boela ea e-ba joala bo nang le liathomo tsa carbon tse 3-5 (joalo ka joala, propanol), acetone. E ka boela ea e-ba li-hydrocarbon tsa aliphatic le li-hydrocarbon tse nkhang hamonate; mocheso o lokela ho laoloa ka hare ho 0-35°C nakong ea alkaliization; nako ea alkaliization ke hoo e ka bang hora e le 'ngoe. Phetoho ea mocheso le nako e ka etsoa ho latela litlhoko tsa thepa le sehlahisoa.
Etherification: Kamora kalafo ea alkaliization, tlas'a maemo a vacuum, etherification e etsoa ka ho eketsa moemeli oa etherifying, 'me moemeli oa etherifying ke propylene oxide. E le ho fokotsa tšebeliso ea moemeli oa etherifying, ts'ebetsong ea etherification, moemeli oa etherifying o eketsoa ka makhetlo a mabeli, bongata ba tlatsetso ea pele ke makhetlo a 1-3.5 ho feta k'hothone e hloekisitsoeng, 'me kakaretso ea litlatsetso tse peli ke makhetlo a 1.5-4 ho feta k'hothone e hloekisitsoeng. Kamora ho eketsa moemeli oa etherifying ka lekhetlo la pele, hlohlelletsa mochesong oa ≤30°C metsotso e 45-90, ebe u futhumatsa ho fihlela ho 50-100°C bakeng sa etherification, nako ke 1-5h, ebe u pholile ho fihlela ho ≤30°C. Kenya etherified Jing ka lekhetlo la bobeli 'me u hlohle, nako ea ho hlohlelletsa ke 30-120min, ebe u futhumatsa ho fihlela ho ? ? ? Etsa etherification, nako ke 1-4h, ka nako ena, k'hothone e hloekisitsoeng le moemeli oa etherifying li arabela ka botlalo ho hlahisa H-HPC.
Ho sila le ho paka: sehlahisoa se omisitsoeng sa popo ena se sila le ho sefshoa. Boholo ba dikarolwana tsa sehlahisoa se sila le ho sefshoa sa popo ena ke 40 mesh mme phetisetso ke 10096, kapa ho ya ka ditlhoko tsa mosebedisi. Ebe o se paka fekthering.
Nako ea poso: Mphalane-13-2022