Tetrahydrofuran

Tetrahydrofuran, luv thf, yog heterocyclic organic compound. Belongs rau chav ether, yog cov ntxhiab tsw furan ua cov khoom lag luam hydrogenation fydrogenation fydrogenation.

TetrahyDrofuran yog ib qho muaj zog tshaj polar. Nws yog siv los ua nruab nrab sab nruab nrab sab hauv cov kuab tshuaj thiab rho tawm. Nws yog cov kua tsis muaj kob uas muaj cov chav sov thiab muaj qhov tsw zoo sib xws rau Etaws. Soluble hauv dej, ethanol, ete, acetone, tshuaj lom neeg benzene thiab lwm cov kuab tshuaj uas zoo tshaj plaws, lub npe hu ua "Universal hnyav". Nyob rau hauv chav tsev kub thiab dej tuaj yeem yog qee qhov ua haujlwm tsis sib xws, qee qhov kev lag luam tsis raug cai yog siv qhov no rau Tetranahydrofrofofuran reagent dej profiteer. Vim tias qhov kev nyiam ntawm THF kom muaj peroxides hauv cia, antioxidant BHT feem ntau ntxiv rau cov khoom lag luam. Cov ntsiab lus noo ≦ 0.2%. Nws muaj cov yam ntxwv ntawm cov tshuaj lom tsawg, tsis tshua muaj boiling taw tes thiab zoo fluidity.

Tshuaj lom neeg cov khoom:tsis muaj kob pob tshab ua kua, nrog cov ntxhiab. Sib tov nrog dej, cawv, Ketone, Benzene, Ester, ether, thiab hydrocarbons.

Cov ntawv thov MAIN:

1. Cov ntaub ntawv raw ntawm Spandex synthesisge:

Tetraydrofuran nws tus kheej tuaj yeem ua polycondensation (los ntawm cationic nplhaib-qhib repolymerization) rau hauv polytetramethylene ether Diol (PTMEG), tseem hu ua TetranahyDrofofofolofuran homopolyl. Ptmeg thiab toluene diisocyanate (tdi) ua los ntawm kev coj tsis kam, roj ua tsis kam, kev ua tau kub tsawg ntawm cov roj hmab tshwj xeeb; Thaiv Polyether Polyester Elastic Khoom tau npaj nrog Dimethyl Terephthal thiab 1, 4-Butanediol. PTmeg nrog tus txheeb ze molecular hnyav ntawm 2000 thiab p-methylene BIS (4-phenycees Qhov tseem ceeb tshaj plaws ntawm thf yog rau kev tsim cov ptmeg. Raws li cov txheeb cais, txog 80% ntawm lub ntiaj teb THF yog siv rau kev tsim cov ptmeg, thiab ptmeg yog siv rau kev tsim cov spandex fiber ntau.

2. Hnyav nrog kev ua tau zoo:

TetrahyDrofuran yog ib feem ntau siv cov kuab tshuaj zoo heev, cov kab xev, luam yeeb yaj kiab, luam yeeb yaj kiab ua kua tau ua tiav kev tswj hwm ntawm Aluminium txheej tuab thiab ci. Hnyav rau daim kab xev txheej, PVC cov txheej, ntxuav PVC yeeb yaj kiab, cov tshuab luam yeeb, cov kua nplaum yas thiab cov khoom siv kho kom ceev rau cov tawv hluavtaws.

3. Siv los ua cov ntaub ntawv raw rau cov synthic synthesis xws li cov chaw ua tshuaj:

For the production of tetrahydrothiophene, 1.4- dichloroethane, 2.3- dichlorotetrahydrofuran, valerolactone, butyl lactone and pyrrolidone. Hauv kev lag luam kws tshuaj, nws yog siv nyob rau hauv synthesis ntawm croughbixin, Rifumycin, progesterone thiab qee cov tshuaj hormone. TetrahyDrotol yog tsim los ntawm hydrogen sulfide kev kho mob, uas tuaj yeem siv ua cov ntxhiab tsw roj (cim tau), thiab tseem yog cov kuab tshuaj tseem ceeb hauv kev lag luam tshuaj.

4. Lwm yam siv:

Chromatographic folvent (gel per formation stratography), siv rau nkev tsw, thiab lwm yam kev loj hlob ntawm kev lag luam polyurethane, qhov kev thov rau ptmeg hauv peb Lub teb chaws nce zuj zus, thiab qhov kev thov rau TetranahyDrofuran kuj tseem pom kev loj hlob sai.

Txaus ntshai:TetrahyDrofuran belongs rau chav kawm 3.1 Cov kua dej uas muaj cua tsis muaj cua, cov pa tau tawg tag nrho yog 1.5% ~ 12% (ntim feem), nrog voos. Nws cov xwm txheej sib txuas kuj yog cov kev nyab xeeb nyab xeeb. Qhov kev nyab xeeb loj tshaj plaws muaj kev txhawj xeeb txog THFS yog qhov kev tsim kho qeeb ntawm cov khoom tawg rog organic heev thaum raug huab cua. Txhawm rau txo qhov kev pheej hmoo no, cov lag luam muaj feem ntau muab tso rau nrog 2, 6-di-tert-beesolit kev tsim cov organic peroxides. Nyob rau tib lub sijhawm, Thf yuav tsum tsis txhob qhuav vim organic peroxides yuav muaj concentrated nyob rau hauv distillation residue.

Kev ceev faj:Kaw ua haujlwm, muaj kev tso pa tag nrho. Cov neeg ua haujlwm yuav tsum raug cob qhia tshwj xeeb thiab nruj me ntsis ua haujlwm los ntawm cov txheej txheem kev ua haujlwm. Nws raug nquahu tias cov neeg ua haujlwm hnav npog lub lim ntim kua (ib nrab npog), tshuaj tiv thaiv kev nyab xeeb, thiab cov roj hmab cov roj-resistant hnab looj tes. Cia li khiav tawm ntawm hluav taws, qhov chaw kub, tsis haus luam yeeb hauv chaw ua haujlwm. Siv tawg-muab pov thawj kev pa tawm tshuab thiab khoom siv. Tiv thaiv kom muaj pa kom tsis txhob khiav mus rau hauv qhov chaw ua haujlwm. Zam kev sib cuag nrog oxidants, acids thiab hauv paus. Tus nqi txaus yuav tsum tau tswj hwm thaum lub sijhawm sau, thiab yuav tsum muaj cov cuab yeej hauv av los tiv thaiv electrostaticsab zuj zus. Thaum tuav, lub teeb thauj khoom thiab kev thauj khoom yuav tsum ua kom tiv thaiv kev puas tsuaj rau ntim thiab ntim. Nruab nrog cov sib raug zoo thiab ntau ntawm cov khoom siv hluav taws thiab dej xau. Ib lub taub ntim khoob yuav muaj cov teeb meem tsis zoo.

Cia Kev ceev faj:Feem ntau cov khoom lag luam muaj tus neeg tsis txaus siab. Khaws rau hauv qhov chaw txias, tshuab ua kom muaj zog. Tseg kom deb ntawm hluav taws thiab tshav kub. Qhov kub ntawm lub tsev rau khoom yuav tsum tsis pub tshaj 30 ℃. Cov pob yuav tsum tau muab khi thiab tsis sib cuag nrog huab cua. Nws yuav tsum tau muab khaws cia cais los ntawm oxidizers, acids thiab cov hauv paus, thiab yuav tsum tsis txhob sib xyaw. Tawg-pov thawj teeb pom kev zoo thiab cov pa hluav taws xob tau txais. Tsis txhob siv cov khoom siv neeg kho tshuab thiab cov cuab yeej uas yog nquag ua rau txim siab. Thaj chaw cia yuav tsum tau nruab nrog cov khoom siv kho kom muaj dej ceev thiab cov tuav cov khoom uas tsim nyog tuav.

Ntim: 180kg / nruas