Ukotini ocwengisisiwe—ukuvula—ukwenza i-alkalizing—ukwenza i-ether ingasebenzi—ukwenza i-neutralizing—ukuhlukanisa—ukuwasha—ukuhlukanisa, ukomisa—ukwenza i-pulvering—ukupakisha—ukuvula ukotini okuqediwe: ukotini ocwengisisiwe uyavulwa ukuze kususwe insimbi, bese uphekwa. Ukotini ocwengisisiwe ocwengisisiwe usesimweni sempuphu, futhi usayizi wezinhlayiya zawo ungama-mesh angu-80 kanti ukudlulisa kungu-100%. Ngaphandle kwalokho, kulula ukuhlangana ndawonye ngesikhathi senqubo yokusabela futhi kunciphise ukusebenza kahle kwe-etherification.
I-Alkalization: Faka ukotini ocoliwe ophuphuwe ngemuva kokuvula ku-intergent engasebenzi, bese uwusebenzisa ngamanzi e-alkali nathambile ukuze uvuvuse i-lattice yekotoni ecoliwe, okusiza ekungeneni kwama-molecule e-etherifying agent, futhi kuthuthukise ukufana kokusabela kwe-etherification. I-alkali esetshenziswa ku-alkalization iyi-hydroxide yensimbi noma isisekelo se-organic. Inani le-alkali elingeziwe (ngesisindo, elifanayo ngezansi) liphindwe izikhathi ezingu-0.1-0.6 kunekotini ecoliwe, kanti inani lamanzi athambile liphindwe izikhathi ezingu-0.3-1.0 kunekotini ecoliwe; i-intert solvent iyinhlanganisela yotshwala ne-hydrocarbon, kanti inani le-intert solvent elingeziwe likotini ecoliwe. Izikhathi ezingu-7-15: i-intert solvent ingaba yi-alcohol enama-athomu e-carbon angu-3-5 (njenge-alcohol, i-propanol), i-acetone. Kungaba futhi yi-aliphatic hydrocarbons nama-hydrocarbon aromatic; izinga lokushisa kufanele lilawulwe ngaphakathi kuka-0-35°C ngesikhathi se-alkalization; isikhathi se-alkalization cishe siyihora eli-1. Ukulungiswa kwezinga lokushisa nesikhathi kunganqunywa ngokuya ngezidingo zezinto ezibonakalayo nomkhiqizo.
Ukufakwa kwe-ether: Ngemva kokwelashwa kwe-alkalizing, ngaphansi kwezimo ze-vacuum, ukufakwa kwe-ether kwenziwa ngokufaka i-etherifying agent, kanti i-etherifying agent yi-propylene oxide. Ukuze kuncishiswe ukusetshenziswa kwe-etherifying agent, enkambisweni yokufakwa kwe-ether, i-etherifying agent ifakwa kabili, inani lokufakwa kokuqala liphindwe ka-1-3.5 kunekotini elicwengisiwe, kanti inani eliphelele lezinto ezimbili ezengeziwe liphindwe ka-1.5-4 kunekotini elicwengisiwe. Ngemva kokufaka i-etherifying agent okokuqala, hlanganisa ekushiseni okungu-≤30°C imizuzu engu-45-90min, bese ushisa kufika ku-50-100°C ukuze uthole ukufakelwa kwe-ether, isikhathi singamahora angu-1-5, bese uphola uye ku-≤30°C. Faka i-etherified Jing okwesibili bese uvuselela, isikhathi sokuxuba singama-30-120min, bese ushisa kufika ku-??? Yenza i-etherification, isikhathi singu-1-4h, ngalesi sikhathi, ukotini ocwengekile kanye ne-etherifying agent zisabela ngokugcwele ekukhiqizeni i-H-HPC.
Ukugaywa kanye nokupakishwa: umkhiqizo owomile walesi sitsha uyagaywa futhi uhlungwe. Usayizi wezinhlayiya zomkhiqizo ogaywayo nohlungwe walesi sitsha ungama-mesh angu-40 kanti ukudluliselwa kwawo kungu-10096, noma ngokwezidingo zomsebenzisi. Bese uwupakisha uphume efektri.
Isikhathi sokuthunyelwe: Okthoba-13-2022