Geliştirilmiş mikrodalga sisteminin elastik poliüretan köpüğünün geri dönüşümüne etkisi

Yıl 2020, , 651 - 662, 25.12.2019

Basak Temur Ergan

https://doi.org/10.17341/gazimmfd.502413

Cited By: 1

Öz

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

Kaynakça

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