Xaaladda horumarinta tignoolajiyada wax soo saarka HPMC iyo habka hydroxypropyl methyl cellulose ee Shiinaha

Xaaladda horumarinta tignoolajiyada wax soo saarka HPMC iyo habka hydroxypropyl methyl cellulose ee Shiinaha

Hydroxypropyl methyl celluloseHPMCwax soo saarka gudaha ee hadda jira waxaa la siiyaa mudnaan la technology habka dareeraha wajiga, technology this waxaa matalaya wuxi kiimikada cilmi baarista iyo machadka design ee Shiinaha unit cilmi 1970 s, guulaha cilmi ku salaysan kor u qaadida, asalka ah waa habka wajiga gaaska falcelin etherification, maxaa yeelay, qalabka aan la qabsan si dalkeena, ka dibna soo shaqeeyay soo baxay wajiga dareere habka habka falcelinta etherification, Ilaa hadda sare heerka wax soo saarka unugyada si fiican loo yaqaan habka falcelinta etherification unugga, Ilaa hadda heerka sare ee heerka wax soo saarka ee habka dareeraha etherification. soo saarayaasha etherka.

Hydroxypropyl methyl cellulose gudaha HPMC wax soo saarka guud ahaan isticmaalaa suuf la safeeyey sida alaabta ceeriin (soo saarayaasha qaar ka mid ah ayaa sidoo kale bilaabay in ay isku dayaan in ay isticmaalaan saxarka alwaax), iyo Furimaha Dagaalka guriga ama si toos ah u isticmaalaan alkalization suuf la safeeyey, etherification isticmaalaya dareere organic isku qasan binary, falcelinta in reactor toosan. Habka sifeyntu waxa ay isticmaashaa hannaan goos goos ah kaas oo dareeraha organic laga soo saaro reactor ka dibna alaabta ceeriin lagu sifeeyo iyada oo la dhaqayo dhawr jeer iyo fuuqbax iyada oo loo marayo xoqo iyo centrifuges. Qalabaynta wax soo saarka la dhammeeyey oo leh granulation kala go'a, oo ku hoos jira xaalad kuleyl ah (waxaa sidoo kale jira saaraha aan granulation), qalajinta iyo burburinta habka caadiga ah, inta badan habka gaarka ah ayaa kaliya dib u dhigaya wakhtiga fuuq-celinta ee alaabta (si dhakhso ah u milmi) processing iyada oo aan ka hortagga caarada iyo qaybinta qaybinta, baakadaha isticmaalka habka gacanta.

Habka wajiga dareeraha ah wuxuu leeyahay faa'iidooyinka soo socda: habka falcelinta qalabka cadaadiska gudaha waa yar yahay, shuruudaha awoodda cadaadiska qalabka ayaa hooseeya, khatar yar; Ka dib markuu uurka ku jiro,cellulosesi buuxda ayaa loo balaadhin karaa oo si siman ayaa loo saari karaa. Lye waxay si fiican u soo dhex gashay iyo bararka cellulose. Reactor etherification waa mid yar, oo ay weheliso bararka lebiska ee cellulose alkali, sidaas darteed tayada badeecadu way fududahay in la xakameeyo, heerka beddelka iyo viscosity-ga ayaa la heli karaa waxyaabo badan oo labis ah, noocyo sidoo kale waa sahlan tahay in la beddelo.

Si kastaba ha ahaatee, habkani waxa kale oo uu leeyahay faa'iidooyinka soo socda: reactor caadi ahaan ma aha mid aad u weyn, xaddidaadaha tirakoobka ayaa keenaya awood wax soo saar yar, si loo hagaajiyo wax soo saarka, waa lagama maarmaan in la kordhiyo tirada reactors; Alaabada cayriin ee la safeeyey ee la sifeeyey waxay u baahan yihiin qalab badan, hawlgal adag, xoojinta shaqada; Sababtoo ah ma jiraan wax ka-hortagga caarada iyo daaweynta isku dhafan, taasoo keentay xasiloonida viscosity alaabta iyo kharashka wax soo saarka ayaa saameeya; Baakadaha habka gacanta, xoojinta shaqada, kharashka shaqada oo sarreeya; Heerka otomaatiga ah ee xakamaynta falcelinta way ka hoosaysaa habka wejiga gaaska, markaa saxnaanta xakamaynta ayaa yara hoosaysa. Marka la barbardhigo habka wejiga gaaska, hababka soo kabashada dareeraha adag ayaa loo baahan yahay.

Iyada oo la hagaajinayo hydroxypropyl methyl cellulose gudahaHPMCtignoolajiyada wax-soo-saarka, shirkadaha qaarkood iyada oo loo marayo hal-abuurnimo joogto ah oo madax-bannaan, habka wejiga dareeraha kittle weyn ayaa lagu sameeyay boodbood iyo habab, wuxuuna leeyahay astaamo farsamo oo u gaar ah. Kiimikada Anxin waxay isticmaashaa habka wax soo saarka asalka ah ee HPMC, ma aha oo kaliya habka wax soo saarka waa mid macquul ah, xuduudaha xakamaynta hawlgalka waa mid sax ah oo la isku halleyn karo, isticmaalka buuxa iyo isticmaalka macquulka ah ee alaabta ceeriin iyo sifooyinka kale, iyo shahaadada beddelka alaabta waa labis, falcelintu waa gebi ahaanba dhamaystiran, daahfurnaanta xalku waa wanaagsan yahay, isla markaana si loo hubiyo xasilloonida tayada alaabta. line-soo-saarka HPMC ee shirkadaha qaar ka mid ah ayaa is-beddelka iswada, si loo gaaro qalabka ee DCS shuruudaha gacanta ku otomatiga, qalabka ay ku jiraan dareeraha, alaabta ceeriin adag waxaa loo isticmaali karaa in si sax ah loo cabbiro oo lagu daro nidaamka DCS, heerkulka iyo xakamaynta cadaadiska ee habka falcelinta ayaa dhammaan xaqiiqsaday DCS gacanta si toos ah iyo la socodka fog, Marka la eego suurtagalnimada, isku halaynta, xasilloonida iyo badbaadada wax soo saarka, waxaa cad in la hagaajiyo marka la barbar dhigo wax soo saarka ee ma aha oo kaliya in la yareeyo hab-dhaqameedka, laakiin ma aha in la yareeyo habka shaqada, jawiga shaqada ee goobta.