Txoj kev tsim khoom
Soybean roj tau dhau los ua epoxidation cov tshuaj tiv thaiv nrog peroxycarboxylic acid nyob rau hauv lub xub ntiag ntawm ib tug catalyst thiab stabilizer los tsim ib tug crude khoom, uas yog refined kom tau cov khoom lag luam.
Lub peroxycarboxylic acid ntawm no feem ntau yog tau los ntawm reacting hydrogen peroxide nrog formic acid (los yog acetic acid).
Formic acid thiab hydrogen peroxide nyob rau hauv lub xub ntiag ntawm sulfuric acid generates peroxyformic acid, uas reacts nrog soybean roj los tsim epoxidized soybean roj, thiab peroxyformic acid yog rov qab los rau formic acid.
Tom qab cov roj taum pauv, formic acid, sulfuric acid, thiab benzene yog nplawm thiab sib tov sib npaug, hydrogen peroxide maj mam ntxiv dropwise kom txog thaum cov tshuaj tiv thaiv kub pib poob, thiab cov tshuaj tiv thaiv mus txog qhov kawg.
Cov tshuaj tiv thaiv yog sab laug kom tshem tawm cov txheej txheem qis ntawm cov kua qaub dej pov tseg. Cov roj txheej yog thawj neutralized nrog dej qab zib tshauv thiab ces ntxuav mus rau nruab nrab. Tom qab cov dej raug tshem tawm, cov roj txheej yog raug rau cov chav distillation, thiab cov khoom seem yog raug rau lub tshuab nqus tsev distillation kom tshem tawm cov boilers qis thiab dej. Cov khoom tiav yog tau los ntawm kev lim dej siab.
Siv
Nws yog dav siv thiab feem ntau siv los ua cov yas tsis muaj tshuaj lom thiab ruaj khov hauv cov khoom siv PVC: nws muaj kev sib raug zoo nrog PVC cob, tsis tshua muaj volatility, thiab kev tsiv teb tsaws tsawg.
Nws lub ntsiab lus tseem ceeb yog siab, feem ntau siab dua 285 degree, nws muaj kev ruaj ntseg zoo heev thiab lub teeb ruaj khov, dej tsis kam thiab roj kuj tseem zoo, nws tuaj yeem muab cov khoom lag luam zoo, huab cua tsis kam, thiab hluav taws xob, thiab nws tsis yog- tshuaj lom. Pom zoo cov txheej txheem tshuaj pab rau cov khoom ntim khoom noj.