Ikotini elicwengekileyo-ukuvula-i-alkalizing-etherifying-neutralizing-ehlukanisa-i-washing-ehlukanisa, i-omisa-i-pulverizing-ukupakisha-iqedile ukuvuleka ukotini: ukotini ocwengiwe uvuliwe ukuze kukhishwe insimbi, bese ugxotshwa. Ukotini ocwengiwe ocwengiwe usesimweni sempushana, futhi usayizi wezinhlayiyana zawo ungama-mesh angama-80 futhi ukudlulisa kungu-100%. Uma kungenjalo, kulula ukuhlanganisa ndawonye ngesikhathi senqubo yokusabela futhi unciphise ukusebenza kahle kwe-etherification.
I-Alkalization: Engeza ukotini ocolisisiwe oyimpuphu ngemva kokuvula into encibilikayo engasebenzi, bese uyisebenzise nge-alkali namanzi athambile ukuze kuvuvuke i-lattice kakotini ocolisisiwe, ovumela ukungena kwama-ejenti e-etherifying, futhi uthuthukise ukufana kokusabela kwe-etherification. . I-alkali esetshenziswa ku-alkalization iyi-hydroxide yensimbi noma isisekelo se-organic. Inani le-alkali elengeziwe (ngobuningi, okufanayo ngezansi) liphindwe izikhathi ezingu-0.1-0.6 kunekotini elicwengekile, futhi inani lamanzi athambile liphindwe izikhathi ezingu-0.3-1.0 kunekotini elicwengekile; i-solvent ye-inert iyinhlanganisela yotshwala ne-hydrocarbon, futhi inani le-solvent ye-inert eyengeziwe iwukotini ohlungiwe. Izikhathi ezingu-7-15: i-solvent inert ingaba notshwala obunama-athomu e-carbon angu-3-5 (njengotshwala, i-propanol), i-acetone. Kungaba futhi i-aliphatic hydrocarbons nama-hydrocarbon anephunga elimnandi; izinga lokushisa kufanele lilawulwe ngaphakathi kwe-0-35 ° C ngesikhathi se-alkalization; isikhathi se-alkalization cishe ihora elingu-1. Ukulungiswa kwezinga lokushisa nesikhathi kunganqunywa ngokuvumelana nezidingo zezinto kanye nomkhiqizo.
I-Etherification: Ngemva kokwelashwa kwe-alkalization, ngaphansi kwezimo ze-vacuum, i-etherification yenziwa ngokungeza i-etherifying agent, futhi i-etherifying agent i-propylene oxide. Ukuze kuncishiswe ukusetshenziswa kwe-etherifying ejenti, enqubweni ye-etherification, i-ejenti e-etherifying yengezwa izikhathi ezimbili, inani lokwengezwa kokuqala liphindwe izikhathi ezingu-1-3.5 kunekotini elicwengekile, kanye nenani eliphelele lezinto ezimbili ezingeziwe. izikhathi ezingu-1.5-4 kunokotini ocolisisiwe. izikhathi. Ngemva kokufaka i-ejenti etherifying okokuqala, gxuma ekushiseni kwe-≤30 ° C ku-45min-90min, bese ushisa kufika ku-50-100 ° C ukuze uthole i-etherification, isikhathi ngu-1-5h, bese upholisa phansi ku-≤30. °C , Engeza i-Jing e-etherified okwesibili futhi ugovuze, isikhathi sokugqugquzela singama-30-120min, bese ushisa kuze kufike ku-? ? ? Yenza i-etherification, isikhathi singu-1-4h, ngalesi sikhathi, ukotini ocolisisiwe kanye ne-ejenti e-etherifying kusabela ngokugcwele ukukhiqiza i-H-HPC.
I-Pulverization kanye nokupakishwa: umkhiqizo omisiwe wokusungulwa kwamanje uyahluzwa futhi uhlungwe. Usayizi wezinhlayiyana zomkhiqizo ohlungiwe futhi ohlungiwe wezinto ezisungulwe manje ziyi-40 mesh futhi i-transmittance ingu-10096, noma ngokwezidingo zomsebenzisi. Bese uyipakisha uyikhiphe efekthri.
Isikhathi sokuthumela: Oct-13-2022