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 thawj feem):
① Diisopropylbenzene (DIPB) oxidation chav tsev:
Twj lub DIPB hauv DIPB nruab nrab lub tank (tso los ntawm DIPB cia tank hauv lub tank ua liaj ua teb) los ntawm tus pej thuam lub taub hau mus rau oxidation ntauwd; 35% ntawm cov kua alkali nyob rau hauv nruab nrab tank ntawm cov kua alkali yog pumped los ntawm tus pej thuam mus rau oxidation ntauwd. Cov ntaub ntawv nyob rau hauv lub pej thuam yog circulated thiab rhuab mus rau 8 0 degree los ntawm oxidation ntauwd hauv qab twj tso kua mis los ntawm lub start-up rhaub (steam cua sov), thiab compressed cua yog qhia. Lub siab nyob rau hauv lub pej thuam yog tswj ntawm 0.38Mpa, thiab cov tshuaj tiv thaiv oxidation pib. Cov tshuaj tiv thaiv kub yog tswj ntawm 80-100 degree . Lub oxidation tus Tsov tus tw yog tawm los ntawm sab saum toj ntawm lub pej thuam, thiab yog condensed thiab recycled los ntawm lub thib ob vent condenser kom rov qab tau DIPB ua ntej venting, Tom qab tau ntxuav nrog 1% kua alkali nyob rau hauv tus Tsov tus tw gas ntxuav ntauwd, nws yog tawm ntawm qhov chaw siab tshaj. . Lub condensed DIPB nkag mus rau lub DIPB reflux tank thiab yog pumped mus rau sab saum toj ntawm lub oxidation ntauwd rau recycling. Tom qab 20 teev ntawm cov tshuaj tiv thaiv, tso cov oxide txheej rau hauv DC oxidation tank.
② Diisopropanol (DC) purification chav tsev:
Tso lub DIPB los ntawm DIPB reflux tank rau hauv DC oxidation kua tank, thiab tom qab ntawd tso cov dej rov qab los ntawm cov dej ntxuav cov dej khib nyiab rau hauv lub tank oxidation kua (dilute kom txo viscosity). Tom qab circulating thiab nplawm nrog lub twj tso kua mis, cia nws sawv ntsug rau 30 feeb. Tso cov kua dej qis qis (NaOH tov) rau hauv cov kua dej qis dua. Ib feem ntawm cov tshuaj NaOH nyob rau hauv qis hnyav kua tank yog reused rau oxidation thiab ib feem yog xa mus rau lub synthesis neutralization reactor; Cov txheej sab saud uas muaj DC cov tshuaj raug xa mus rau DIPB thiab oxidation tov tov tank los ntawm lub tshuab txias, thiab cov dej me me ntxiv ntxiv kom txo cov khoom viscosity. Tom qab ntawd, nws yog pumped rau lub centrifuge rau kev sib cais centrifugal. Cov filtrate nkag mus rau DIPB niam kua tank thiab xa mus rau oxidation ntauwd rau rov siv dua. Lub ncuav mog qab zib lim yog xa mus rau lub crude DC ntxhua khaub ncaws thiab nplawm nrog 60 degree dej kub rau kev ntxuav, txias rau chav tsev kub, thiab tom qab ntawd muab tso rau hauv lub centrifuge rau lub cev qhuav dej. Tom qab ntawd cov lim dej tau muab tso rau hauv lub tank ntxhua khaub ncaws, thiab tom qab ntawd muab tso rau hauv lub tank ntxhua dej kom rov siv dua hauv DC oxidation cawv cia tank; Tshem lub ncuav mog qab zib lim rau DC lub rhaub dej, ntxiv DIPB tshiab rau kev nplawm thiab ntxuav, thiab tom qab ntawd muab tso rau hauv centrifuge rau kev sib cais. Cov filtrate ntws mus rau DIPB kua tshem tawm tank, thiab tom qab ntawd mus rau DIPB thiab oxidation kua sib tov tank rau rov siv dua kom txog rau thaum kev soj ntsuam tsis ua raws li cov txheej txheem. Distilled thiab rov ua dua ntawm DIPB rov qab seem; Lim ncuav mog qab zib (DC) yog qhuav ntawm 90 degree thiab atmospheric siab kom tau refined DC.
Cov txheej txheem tom ntej: BIBP synthesis, BIBP crystallization, thiab ntim. Yog xav paub ntxiv, thov mus saib "Production Process of Bis (tert-butyldioxyisopropyl) benzene (Part 2)".