Geliştirilmiş mikrodalga sisteminin elastik poliüretan köpüğünün geri dönüşümüne etkisi

Esnek Poliüretan (PU) köpüğünün, eş zamanlı soğutulan sürekli mikrodalga (MW) ortamında dietilenglikol (DEG) ile glikolizinin (geri dönüşümünün) incelendiği bu çalışmada, katalizör olarak kalay oktaat kullanıldı. Daha sonra, reaksiyon ortamını tanımlayan değişkenler (PU/DEG oranı ve % kalay oktaat) ve proses değişkenleri ( sıcaklık(T), zaman(t), MW gücü (P) ile bu değişkenlerin çalışma aralıkları belirlendi. Bu beş değişken ile ilgili literatürler incelenerek ve kurulan MW sistemindeki çalışabilme koşulları düşünülerek PU/DEG oranı (0,1) ve T (189°C) değişkenleri sabit alındı. Diğer üç değişkenin (P, t, % kalay oktaat) poliol verimi ve MW enerji tüketimi üzerinde olan etkileri araştırıldı. Çalışmada minimum enerji harcayarak maksimum poliol verimi için optimum proses şartları belirlendi. Daha sonra belirlenen bu optimum şartlarda yapılan deneme, birebir aynı şartlarda geleneksel yöntemle (CH) tekrar edilerek, MW’nin etkisi karşılaştırmalı olarak incelendi. Buna göre MW-destekli glikoliz reaksiyonunda, aynı süre içinde poliol veriminin, CH yöntemine göre % 46,6 daha fazla olduğu bulundu. Buna ek olarak, MW metot ile % 78 oranında enerji tasarrufu sağlanırken, poliol üretim hızı da %46,7 oranında artmıştır.

Anahtar Kelimeler:

Gelişmiş mikrodalga sistem, eş zamanlı soğutma, poliüretan, glikoliz

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