Usoro pulping nke cellulose ethers gụnyere ọtụtụ usoro nke iwepụta cellulose site na akụrụngwa wee mechaa gbanwee ya ka ọ bụrụ cellulose ethers.Cellulose ethers bụ ogige dị iche iche nwere ngwa na ụlọ ọrụ dị iche iche, gụnyere ọgwụ, nri, akwa na ihe owuwu.Usoro pulping dị oké mkpa iji nweta cellulose dị elu, akụrụngwa maka mmepụta cellulose ethers.Ihe na-esonụ bụ nkọwa zuru ezu nke cellulose ether pulping usoro:
1. Nhọrọ akụrụngwa:
Usoro pulping na-amalite site na nhọrọ nke akụrụngwa nwere cellulose.Ebe ndị a na-ahụkarị gụnyere osisi, owu, na eriri osisi ndị ọzọ.Nhọrọ nke akụrụngwa na-adabere na ihe ndị dị ka ether cellulose ether, ọnụ ahịa na ihe ndị a chọrọ.
2. Usoro ime Pulp:
E nwere ọtụtụ ụzọ e si amịkpọ mkpụrụ ndụ cellulose, ọkachasị gụnyere pulping kemịkalụ na pulping n'ibu.
3. Chemical pulping:
Kraft pulping: Agụnyere ịgwọ ibe osisi na ngwakọta nke sodium hydroxide na sodium sulfide.Usoro a na-agbaze lignin, na-ahapụ n'azụ eriri cellulosic.
Sulfite pulping: Iji sulfurous acid ma ọ bụ bisulfite mebie lignin na nri nri.
Ihe mgbaze Organic: Iji ihe mgbaze organic dị ka ethanol ma ọ bụ methanol gbarie lignin na kewapụ eriri cellulose.
4. Mechanical pulping:
Ntugharị osisi n'ala okwute: Ọ na-agụnye ịgwe osisi n'etiti okwute iji kewapụ eriri ahụ n'ụzọ dị iche iche.
Nrụpụta ihe eji eme ihe: Na-eji ike igwe kewapụ eriri site na imezi ibe osisi.
5. Ịcha ọcha:
Mgbe pulping gasịrị, cellulose na-eme usoro ịcha ọcha iji wepụ adịghị ọcha na agba.Enwere ike iji chlorine, chlorine dioxide, hydrogen peroxide ma ọ bụ oxygen mee ihe n'oge oge ịcha ọcha.
5.. Mgbanwe cellulose:
Mgbe emechara ọcha, a na-agbanwe cellulose iji mepụta ethers cellulose.Ụzọ ndị a na-emekarị gụnyere etherification, esterification na mmeghachi omume kemịkal ndị ọzọ iji gbanwee ihe anụ ahụ na kemịkal nke cellulose.
6. Usoro etherification:
Alkalization: Ịgwọ cellulose na alkali (na-emekarị sodium hydroxide) iji mepụta cellulose alkali.
Na-agbakwụnye ihe ndị na-eme ka etherifying: Alkaline cellulose na-emeghachi omume na ndị ọrụ etherifying (dị ka alkyl halides ma ọ bụ alkylene oxides) iji webata otu ether n'ime usoro cellulose.
Neutralization: Neutralize ngwakọta mmeghachi omume iji kwụsị mmeghachi omume ahụ wee nweta ngwaahịa ether cellulose achọrọ.
7. Ịsa na ihicha:
A na-asa ngwaahịa ether cellulose iji wepụ ngwaahịa na adịghị ọcha.Mgbe ihichachara, a na-akpọnwụ ihe ahụ iji nweta ọdịnaya mmiri achọrọ.
8. Egweri na nyocha:
Akọrọ cellulose ethers nwere ike n'ala iji nweta kpọmkwem urughuru nha.A na-eji sieving kewapụ akụkụ nke nha achọrọ.
8. njikwa mma:
A na-emejuputa usoro njikwa mma iji hụ na ethers cellulose ruru ụkpụrụ akọwapụtara.Nke a na-agụnye nnwale nke viscosity, ogo nke nnọchi, ọdịnaya mmiri na ihe ndị ọzọ dị mkpa.
9. Nkwakọ ngwaahịa na nnyefe:
A na-achịkọta ngwaahịa ether cellulose ikpeazụ ma kesaa ya na ụlọ ọrụ dị iche iche.Nkwakọ ngwaahịa kwesịrị ekwesị na-eme ka a na-edobe ogo ngwaahịa n'oge nchekwa na njem.
Usoro pulping nke cellulose ether bụ usoro dị mgbagwoju anya nke gụnyere nhọrọ akụrụngwa, usoro pulping, ịcha ọcha, mgbanwe cellulose, etherification, ịsacha, ihicha, egweri na njikwa mma.Nzọụkwụ ọ bụla dị oke mkpa n'ịchọpụta àgwà na ihe onwunwe nke cellulose ether emepụtara, na-eme ka ọ dị mma maka ọtụtụ ngwa ngwa.Ọganihu teknụzụ na-aga n'ihu na-emeziwanye ma na-ebuli usoro ndị a iji mee ka arụmọrụ na nkwado nke mmepụta cellulose ether dịkwuo elu.
Oge nzipu: Jan-15-2024