Chowumitsira kristalo cha infrared cha R-PET Pelletizing/ Extrusion Line
Infrared Pre-Drying of PET Flakes: Kuchulukitsa Kutulutsa ndi Kupititsa patsogolo Ubwino pa PET Extruder
>>Kukonzanso ma flakes mu extruder kumachepetsa IV chifukwa cha hydrolysis i kukhalapo kwa madzi,ndichifukwa chake kuumitsa kusanachitike kuyanika kofanana ndi IRD System yathu kumatha kuchepetsa kuchepa uku. Kuphatikiza apo, utomoni umakhala wachikasu chifukwa nthawi yowuma imachepetsedwa (Kuyanika nthawi kumangofunika 15-20mins, chinyezi chomaliza chikhoza kukhala≤ 50ppm, kugwiritsa ntchito mphamvu zosakwana 80W/KG/H), ndi kumeta ubweya mu extruder potero kumachepetsanso chifukwa preheated zinthu amalowa extruder pa kutentha zonse”
>> Mu gawo loyamba, PET regrind imawunikidwa ndikuwumitsa mkati mwa IRD mkati mwa mphindi pafupifupi 15. Njira yowumitsa ndi kuyanika iyi imatheka ndi njira yowotcha mwachindunji pogwiritsa ntchito ma radiation ya infrared, kuti akwaniritse kutentha kwa 170˚C. Mosiyana ndi kayendedwe ka mpweya wotentha, kulowetsedwa kwachangu ndi kolunjika kumathandizira kuti pakhale kusinthika kwabwino kwa kusintha kwa chinyezi cholowetsamo - njira yoyendetsera ma radiation ya IR imalola kuyankha ku kusintha kwazinthu mkati mwa masekondi. Mwanjira iyi, zikhalidwe zapakati pa 5,000 ndi 8,000 ppm zimachepetsedwa chimodzimodzi mkati mwa IRD mpaka mulingo wotsalira wa chinyezi pafupifupi 30-50ppm.
>>Monga chotsatira chachiwiri cha crystallization process mu IRD, kuchuluka kwa zinthu zapansi kumawonjezeka,makamaka m'ma flakes opepuka kwambiri. Zotsatira zachiwirizi ndizosangalatsa kwambiri poyang'ana kumbuyo kuti chizolowezi cha mabotolo otchingidwa ndi mipanda yopyapyala chimalepheretsa zinthu zobwezerezedwanso kuti zisakwaniritsidwe zochulukirapo za> 0.3 kg/dm³. Kuwonjezeka kwa kachulukidwe kochulukira ndi 10 mpaka 20% kutha kupezedwa mu IRD, yomwe ikuwoneka ngati yocheperako poyang'ana koyamba, koma imapangitsa kuti chakudya chiziyenda bwino panjira ya extruder kwambiri - pomwe liwiro la extruder silinasinthe, pali kusintha kwakukulu. kudzaza ntchito pa screw.
Nthawi yotumiza: Apr-07-2023