Sodium dodecylbenzene sulfonate, SDBS luv luv, yog ib qho uas nquag siv anionic surfactant. Nws yog dawb los yog lub teeb daj hmoov los yog flaky khoom, nyuaj rau volatilize, yooj yim soluble nyob rau hauv dej, thiab soluble nyob rau hauv dej los ua ib tug translucent tov. Nws ruaj khov thiab me ntsis tshuaj lom rau alkali, dilute acid thiab dej nyuaj.
Lub keeb kwm ntawm txoj kev loj hlob yog raws li nram no: vim hais tias petrochemical tuam txhab uas muag yuav hloov tau ib tug loj npaum li cas ntawm tetrapolypropylene rau Dodecylbenzene, cov khoom zoo yog siab thiab tus nqi qis, yog li cov tshuaj detergent nrog Dodecylbenzene li raw khoom sai hloov xab npum, thiab dodecylbenzene sulfonate sai sai tau los ua tus ntau tshaj plaws ntawm cov organic surfactant hauv Tebchaws Meskas. Lub sijhawm no, txawm hais tias cov surfactant siv tau zoo daim ntawv thov kev ua tau zoo, muaj qhov tsis zoo, lawv cov biodegradation tus nqi hauv cov dej phwj tuaj yog tsawg heev, thiab cov degradation tsis tiav, uas tau ua rau muaj kuab paug rau ib puag ncig. Txhawm rau daws qhov teeb meem no, thaum xyoo 1960, kev lag luam tshuaj ntxuav tes tau pib hloov pauv los ntawm kev tsim cov ceg saw Alkylbenzene Sulfonates mus rau cov saw hlau alkylbenzene sulfonates. Vim qhov zoo biodegradability ntawm cov khoom ncaj nraim, cov pa phem tshwm sim los ntawm cov tshuaj ntxuav tes ua npuas ncauj, uas yog lub hom phiaj ntawm kev lag luam tshuaj ntxuav tes hauv xyoo 1950, tau daws. Tom qab ntawd, daim ntawv thov teb ntawm alkyl arylsulfonate anionic surfactants tau nthuav dav, thiab qhov kev thov thiab kev muag khoom ntawm cov khoom tau nce.
Lub cev muaj zog: 1 Anionic surfactant. Vim nws cov nqi qis thiab kev ua haujlwm zoo, nws tau siv dav. Nws yog cov hluavtaws surfactant nrog ntau tshaj plaws ntawm cov khoom siv hauv tsev. Nws kuj ua tau qee cov ntsev inorganic xws li magnesium thiab calcium thiab organic amine ntsev xws li triethanolamine. Calcium dodecylbenzene sulfonate [27176-87-0] muaj cov khoom emulsifying zoo heev thiab yog ib feem tseem ceeb ntawm cov emulsifiers sib xyaw rau kev npaj ntau yam tshuaj tua kab. Benzene thiab - Olefins yog condensed nyob rau hauv lub catalyst ntawm txhuas trichloride, thiab cov condensed kua yog evaporated kom rov qab benzene tom qab alkali ntxuav thiab dej ntxuav, thiab ces refined alkylbenzene yog tau los ntawm lub tshuab nqus tsev distillation. Tom qab ntawd cov calcium dodecylbenzene sulfonate tau txais los ntawm sulfonation nrog fuming sulfuric acid thiab neutralization nrog dawb tshauv (hauv 2 npaug ntawm ethanol).
2. nws yog dav siv los ua cov khoom siv raw khoom los tsim ntau yam tshuaj detergents thiab emulsifiers, xws li ntxuav hmoov hauv kev lag luam tshuaj txhua hnub. Tableware, detergent, detergent thiab dye rau textile kev lag luam, degreaser rau electroplating kev lag luam, tawv kev lag luam, deinking agent rau ntawv kev lag luam, thiab lwm yam. noo noo thiab agglomerate. Degreaser zoo heev rau cov tawv tawv.
Synthetic sodium dodecylbenzene sulfonate - txheej txheem kev lag luam:
Sodium dodecylbenzene sulfonate yog npaj los ntawm cov tshuaj tiv thaiv ntawm Dodecylbenzene nrog fuming sulfuric acid los yog sulfur trioxide, thiab tom qab ntawd neutralization nrog alkali. Qhov tsis zoo ntawm sulfonation nrog fuming sulfuric acid yog tias ib txwm muaj qee cov kua qaub pov tseg hauv cov khoom siv sulfonated tom qab cov tshuaj tiv thaiv. Cov sodium sulfate generated tom qab neutralization yog coj mus rau hauv cov khoom, uas cuam tshuam rau nws purity. Tam sim no, sulfur trioxide cua sib tov sulfonation yog siv hauv kev lag luam. Sulfur trioxide tuaj yeem evaporated los ntawm 60 feem pua fuming sulfuric acid, los yog leej faj thiab cov cua qhuav tuaj yeem raug hlawv hauv qhov cub kom tau cov pa sib xyaw uas muaj SO3. Cov roj sib xyaw yog nkag mus rau hauv lub tshuab hluav taws xob sulfonation nruab nrog alkylbenzene rau sulfonation. Cov ntaub ntawv sulfonated nkag mus rau qhov nruab nrab ntawm kev ua kom tsis zoo nrog cov tshuaj sodium hydroxide, thiab thaum kawg nkag mus rau lub tshuab ziab khaub ncaws kom qhuav. Cov khoom tau txais yog hmoov nrog zoo fluidity.
Tom qab dehydrogenation ntawm kev khiav ncaj qha kerosene, dodecyl olefin thiab benzene nkag mus rau alkylator los ntawm lub twj tso kua mis pub, thiab tom qab ntawd cov generated dodecyl benzene (Lab) raug xa mus rau sulfonator 1, qhov twg nws yog sulfonated nrog sulfur trioxide (3% ~ 5 feem pua) nkag mus. cov tshuaj sulfonator. Tom qab kev kho mob los ntawm cov roj-kua separator 2, circulating twj tso kua mis 3 thiab txias 4, ib co ntawm cov khoom rov qab mus rau hauv qab ntawm lub reactor rau quenching ntawm sulfonic acid, thiab ib co ntawm cov tshuaj tiv thaiv cov khoom raug xa mus rau cov laus reactor 5, kho cov tshuaj tiv thaiv. tuav lub sij hawm, ces nkag mus rau lub hydration reactor 6 los tsim cov kua qaub, thiab thaum kawg npaj sodium alkylbenzene sulfonate (LAS) los ntawm neutralizer 7. Cov roj av yog tshem tawm ntawm cov kua qaub los ntawm demister 8, thiab tom qab ntawd vented tom qab absorbed los ntawm absorbing ntauwd 9.