BIOMASSA PIROLIZ JARAYONINING KINETIKASINI TADQIQ QILISH (KUNGABOQAR CHIQINDILARI MISOLIDA)
Kalit so‘zlar:
piroliz kinetikasi, biomassa pirolizi, kungaboqar chiqindilari, Comsol multiphysics, degradatsiya,, Kissinger usuliAbstrak
Annotatsiya. Kirish. Ushbu maqola Comsol multiphysics dasturiy ta’minotiga asoslangan kungaboqar chiqindilari bo‘laklari biomassasining piroliz jarayonining kinetikasini o‘rganib chiqildi, bu biomassani parchalanishi jarayonida sodir bo‘ladigan kimyoviy reaktsiyalar tezligini aniqlash va piroliz tezligi va samaradorligiga ta’sir qiluvchi asosiy omillarni aniqlash imkonini beradi. Olingan modellar harorat o‘zgarishi tendentsiyalarini juda yaxshi tavsiflaydi. Kungaboqar chiqindi bo‘laklari biomassasining piroliz jarayoni 440-717 K harorat oralig‘ida sodir bo‘lgan. 440 K haroratda biomassa massasini yo‘qotishni boshladi, massa yo‘qolishi esa 717 K haroratda to‘xtadi. Kinetik parametrlar Kissenjer usuli bilan hisoblab chiqilgan. Kinetik va doimiy parametrlarni hisoblash uchun eng kichik kvadratlar usuli va korrelyatsion tahlil ishlatilgan. Natijalar kelajakda biomassa piroliz jarayonining jarayoni va sharoitlarini optimallashtirish uchun foydali bo‘ladi.
Usullar va materiallar. Tahlil qilish uchun ushbu tadqiqotda kungaboqar chiqindilarining biomassasi ishlatilgan, chunki bu biomassa yuqori issiqlik qobiliyatiga va yuqori bioneft rentabelligiga ega. Bo‘laklar hajmi 0,02 m2 ni tashkil etdi, kungaboqarning termofizik xususiyatlari ishlatildi. Tahlil Comsol Multiphysics dasturi yordamida amalga oshirildi.
Natijalar. Comsol Multiphysics asosida kungaboqar chiqindilari biomassasining piroliz jarayonini modellashtirishda harorat o‘zgarishini o‘lchash uchun biomassa yuzasida va biomassa markazida harorat datchiklari o‘rnatildi. Vaqtga qarab harorat o‘zgarishi ma’lumotlari olindi. Olingan modellar harorat tendentsiyalarini, ayniqsa biomassa markazidagi haroratni juda yaxshi tavsiflaydi.
Xulosa. Kinetik parametrlar Kissinger usuli bilan hisoblab chiqilgan. Kinetik va doimiy parametrlarni hisoblash uchun eng kichik kvadratlar usuli va korrelyatsion tahlil ishlatilgan. Natijalar kelajakda biomassa piroliz jarayoni sharoitlarini optimallashtirish uchun foydali bo'ladi. Kissinger usulida kinetik parametrlar butun piroliz jarayoni uchun bir xil edi. Modeldagi harorat va isitish tezligi o‘rtasidagi korrelyatsiya koeffitsiyenti 0,86 ga teng.
Yuklashlar
bibliografik havolalar
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