Tetrahydroforan

Tetrahydroforan, chidule cha THF, ndi herucyclic ortic. Ndi wa gulu la Ether, ndiye mankhwala okumbika a hydrogeenation kwathunthu.

Tetrahydroforan ndi imodzi mwa polar wamphamvu kwambiri. Imagwiritsidwa ntchito ngati polar yosungunuka mumiyeso yamankhwala ndikuchotsa. Ndi madzi osasunthika osasunthika ndipo ali ndi fungo lofanana ndi ether. Sungunulani m'madzi, ethanol, ether, acetone, mankhwala acenune ndi ena osungunulira, otchedwa "solvelal esulvental". Mu firiji ndi madzi zimatha kukhala zolakwika pang'ono, bizinesi ina yosanja yosaloledwa ndikugwiritsa ntchito mfundoyi ku tetrahydroforan yopambana. Chifukwa cha chizolowezi cha THF kuti apange peroxides posungirako, antioxidant BHT ambiri amawonjezeredwa ku mafakitale. Zolemba ≦ 0.2%. Ili ndi mikhalidwe ya poizoni ochepa, malo otsika owira ndi madzi abwino.

Mankhwala:Madzi opanda utoto opanda mawonekedwe, okhala ndi khungu la ether. Osakanizidwa ndi madzi, mowa, ketone, benzene, erther, ether, ndi ma hydrocarbons.

Ntchito zazikulu:

1. Zida zopangira spandes synthesis:

Tetrahydroforn ikhoza kukhala polycondtion Ptmeg ndi toluene diisocyananate (TDI) wopangidwa ndi kuvala, kukana mafuta, kutentha kochepa, mphamvu yayikulu ya mphira yapadera, Block Polyther Poyerster Eweluza adakonzedwa ndi a Dimethyl Terephthalate ndi 1, 4-fineEyal. PTMG yokhala ndi ma celecular kulemera kwa 2000 ndi p-methyl cis (4-phenyl) diisocyanate (MDI) kuti apange zotupa za polyirethane (Mdi) kuti apange zitsamba), rabaji yapadera ndi cholinga chapadera ndikupanga zophika. Kugwiritsa ntchito kofunikira kwambiri kwa Thf ndiko kupanga kwa ptmeg. Malinga ndi ziwerengero zotsutsana, pafupifupi 80% ya padziko lonse lapansi imagwiritsidwa ntchito popanga ptmeg, ndipo ptmeg imagwiritsidwa ntchito makamaka popanga spandex fiber.

2. Zosungunulira ndi ntchito zabwino:

Tetrahydroforan ndi yogwiritsidwa ntchito bwino kwambiri, makamaka yoyenera kusungunuka pvc, Polyvinylidene chloride ndi incy a Aniline, ndi mafinya, tepi yolumikizira madzi a aluminiyamu wa makulidwe ndi owala. Zosungunulira kwa matepi, zokutira pa PVC, kukonza PVC riactor, zolumikizira za celmophane, zomwe zimagwiritsidwa ntchito, zomwe zimagwiritsidwa ntchito ndi othandizira ndi othandizira adziko lapansi.

3. Wogwiritsidwa ntchito ngati zida zophika za zigawo zachilengedwe monga mankhwala:

Pakupanga tetrahydroopine, 1.4- dichlororoeene, 2.3- dichlororortrohydroforran, Valerolactone, ntholrolactone, andyl lactolone ndi pirtherone. M'makampani opanga mankhwala, imagwiritsidwa ntchito popanga kwa chifuwa, Rifumycin, progesterone ndi mankhwala ena a mahomoni. Tetrahydrothioophenol imapangidwa ndi matenda a hydrogen sulfide mankhwala, omwe angagwiritsidwe ntchito ngati Wothandizira wamafuta (chozindikiritsa), komanso zosungunulira zazikulu mu malonda opangira mankhwala.

4. Kugwiritsa ntchito kwina:

Chromatographic solvent (Gel Permear Chrometography), yomwe imagwiritsidwa ntchito ngati mafuta am'mimba, acetylene zotuluka, makamaka m'zaka zaposachedwa, kukula kwa ptmegthane, kumafunikira PTMG mu Dziko likuchulukirachulukira, ndipo kufunikira kwa Tetrahydroforan kumawonetsanso kukula msanga.

Ngozi:Tetrahydroforan ndi wa kalasi 3.1 madzi otupa ndi malo otsika, owombera kwambiri, nthunzi yophulika ndi 1.5% ~ Quaction. Chilengedwe chake chowoneka bwino chimakhalanso chowopsa. Kudera nkhawa kwakukulu ndi ma THFS ndikusintha pang'onopang'ono kwa ordoxides ophulika mwamphamvu kwambiri mukakhala ndi mpweya. Kuti muchepetse chiopsezo ichi, ma TAMEN amapezeka kawirikawiri ndi 2, 6-di-tIrt-cendylp-cresol (bht) kuti aletse kupanga kwa organic peroxides. Nthawi yomweyo, thf sayenera kuwuma chifukwa mbalame yamoyo imakhazikika mu distillaue yotsalira.

Opatuna Njira:Kutsekedwa, mpweya wathunthu. Ogwiritsa ntchito ayenera kuphunzitsidwa mwaluso komanso mosamalitsa pogwira ntchito. Ndikulimbikitsidwa kuti ogwiritsa ntchito amavala chigoba chamtundu wa mpweya (theka lachitetezo), magalasi oteteza chitetezo, zovala zotsutsana ndi mafuta, ndi magolovesi a mphira. Pewani kumoto, gwero lotentha, palibe kusuta kuntchito. Gwiritsani ntchito ma mpweya ophulika ophulika ndi zida. Pewani Steam kuti ithawe kuntchito. Pewani kulumikizana ndi oxidants, ma asidi ndi zitsulo. Kuchuluka kwake kuyenera kulamulidwa pakudzazidwa, ndipo payenera kukhala chida chopewa kusanthula magetsi. Pogwirira ntchito, kutsegula kwa kuwala ndi kutsitsa kuyenera kuchitika popewa kuwonongeka kwa ma CD. Okonzeka ndi mitundu yolingana ndi kuchuluka kwa zida zamoto ndi zida zotayira mwadzidzidzi. Chidebe chopanda kanthu chimatha kukhala ndi zotsalira zotsalira.

Kusunga:Nthawi zambiri katundu ali ndi choletsa. Sungani malo osungirako ozizira, opanda mpweya. Khalani kutali ndi moto ndi kutentha. Kutentha kwa nyumba yosungirako sikuyenera kupitirira 30 ℃. Phukusili liyenera kusindikizidwa ndipo osalumikizana ndi mpweya. Iyenera kusungidwa mosiyana ndi oxidizezezezengers, mamba ndi zitsulo, ndipo sayenera kusakanikirana. Malo owala ophulika ndi mpweya wabwino amathandizidwa. Osagwiritsa ntchito zida ndi zida zomwe zimakonda kuwunika. Malo osungiramo ayenera kukhala ndi zida zadzidzidzi chithandizo chadzidzidzi ndi zida zoyenera.

Matanda: 180kg / Drum