Bis (tert-butyldioxyisopropyl) benzene, tseem hu ua BIBP, nrog cov mis molecular C20H34O4, yog dawb crystalline hmoov.
Bis (tert-butyldioxyisopropyl) benzene, tseem hu ua odorless DCP, tuaj yeem hloov yuav luag txhua qhov DCP tuaj yeem siv tau. Cov khoom ntawm cov roj hmab sib xyaw, suav nrog hardness, tawg lub zog, elongation, lub zog tsim kua muag, roj tsis kam, thiab kev laus coefficient, yog qhov pib zoo ib yam thaum hloov DCP nrog Bis (tert-butyldioxyisopropyl) benzene. Txawm li cas los xij, compression deformation ntawm qhov kub siab yog zoo dua li DCP nrog Bis (tert-butyldioxyisopropyl) benzene. Thiab qhov ntau npaum li cas qis dua, nrog tib qhov sib txuas sib txuas, qhov sib ntxiv yog li 1/2 txog 2/3 ntawm DCP.
Cov txheej txheem tseem ceeb ntawm Bis (tert-butyldioxyisopropyl) benzene yog qhia luv luv raws li hauv qab no (kab lus no yog qhov thib ob):
③ BIBP synthesis unit:
Tom qab ntsuas qhov DC refined, nws ntxiv rau DC / TBHP tov tank thiab ib qho nyiaj ntawm tert butyl hydrogen peroxide (TBHP) ntxiv. Tom qab stirring thiab dissolving, nws yog pumped mus rau lub synthesis kettle. Lub tsho yog rhuab mus rau 35 degree nrog dej kub, thiab 70% sulfuric acid yog ntxiv dropwise (98% concentrated sulfuric acid yog tov nrog dej nyob rau hauv lub acid npaj kettle los ua 70% dilute sulfuric acid, uas yog pumped rau hauv ib tug 70% dilute. acid ntsuas tank) pib cov tshuaj tiv thaiv. Lub tsho yog txias nrog dej txias thiab tswj qhov kub ntawm 35-38 degree . Tom qab cov qauv thiab kev tshuaj ntsuam xyuas tiav lawm, nws raug tso cai sawv ntsug thiab txheej txheej, Twj cov txheej txheem qis hauv cov reactor rau hauv cov txheej txheem txheej txheej pov tseg cov kua qaub cia rau ib ntus. Cov tshuaj uas muaj BIBP nyob rau hauv txheej sab sauv yog muab tso rau hauv cov dej ntshiab BIBP los ntxuav cov alkali ntxhua khaub ncaws, rhaub nrog dej rau ntxuav, thiab sab laug rau txheej. Cov dej khib nyiab qis nkag mus rau hauv cov roj-dej sib cais tank, thiab muab faib rau hauv cov dej khib nyiab hauv qab rau kev kho cov dej phwj tuaj. Cov txheej txheej sab saud rov qab mus rau hauv dej kom ntxuav cov alkali ntxhua khaub ncaws kom rov siv dua. Cov dej ntshiab yog muab tso rau hauv thiab cov kua alkali yog nqus mus rau hauv lub tank cheeb tsam rau alkali ntxuav, thiab sab laug rau txheej. Cov txheej txheem qis dua mus rau cov roj-dej sib cais tank rau txheej txheej ntxiv, thiab cov txheej txheej sab saud rov qab mus rau cov dej kom ntxuav cov alkali ntxhua khaub ncaws, Kev kho dej qis qis; Ua lwm yam dej ntxuav raws li cov kauj ruam ntxuav dej, tshem tawm cov dej khib nyiab los ntawm theem dej qis, thiab khaws cov kua dej sab saud rau hauv cov dej ntxhib BIBP cia rau thaub qab.
④ BIBP crystallization thiab ntim chav tsev:
Twj methanol niam cawv rau hauv lub thawv crystallization los ntawm methanol niam cawv tank, pib nplawm, thiab ntxiv BIBP crude los ntawm crude BIBP cia tank los ntawm lub twj tso kua mis mus rau lub kettle. Nyob ntawm seb qhov kev txheeb xyuas qhov xwm txheej, tso cov methanol tshiab rau hauv methanol nruab nrab lub tank, thiab txias nws mus rau 15 degree los ntawm lub tsho nrog cov dej ntsev khov. Crystallize rau 2 teev, centrifuge thiab cais. Cov lim dej ntws mus rau methanol niam cawv tank rau rov siv dua. Yog tias cov ntsiab lus methanol impurity siab, nws raug xa mus rau methanol distillation kettle rau distillation thiab rov qab; Lub ncuav mog qab zib lim yog pub rau hauv BIBP melting tank, thiab lub tsho yog rhuab mus rau 50 degree nrog dej kub kom yaj BIBP. Yog tias qhov kev soj ntsuam tsis tsim nyog, nws tau muab tso rau hauv lub hwj recrystallization, thiab A tshiab tau muab tso rau hauv methanol intermediate tank rau recrystallization. Tom qab centrifugation thiab melting, nws yog qhuav (40 degree, atmospheric siab) thiab ntim kom txog thaum cov kev ntsuam xyuas tsim nyog.
Cov txheej txheem dhau los suav nrog oxidation ntawm isopropyl benzene (DIPB) thiab kev ua kom huv ntawm diisopropyl cawv (DC). Thov xa mus rau "Production Process of Bis (tert-butyldioxyisopropyl) benzene (Part 1)" kom paub meej.