Çöp gazından gelen siloksanların enerji üretimindeki sınırlamaları ve gazdan uzaklaştırma metotları

Year 2017, Volume: 4 Issue: 7, 42 - 53, 22.12.2017

Özge Östürk , Orhan Sevimoğlu

Abstract

Siloksanlar, oksijen ve silisyum atomlarından oluşan
ve alternatif olarak silisyumun yan zincirlerine hidrokarbon gruplarının
bağlandığı bileşiklerdir. Siloksanların özellikle arıtma çamurlarında ve katı
atık depolama alanlarında oluşan biyogazda bulunduğu tespit edilmiştir. Bu
çalışmada, enerji üretimi esnasında çöp gazında bulunan siloksanların
oksitlenmesi sonucu oluşan depozitlerin motorun yanma odasının çeperlerinde
birikmesi değerlendirilmiştir. Siloksanların oksitlenmesi sonucu gaz motorunun
parçalarında oluşan depozit, gaz motorunun işletme maliyetini arttırmaktadır.
Bununla birlikte depozit oluşumundan kaynaklı olarak motor parçalarının
temizlenmesi ve erken bakımdan dolayı enerji üretiminde kayıplara neden olması
söz konusudur. Bu çalışmada çöp gazında bulunan siloksanların gazdan
uzaklaştırılması amacıyla kullanılan metotlar incelenmiştir. Bu kapsamda,
adsorpsiyon yönteminin kullanılan en yaygın metot olduğu görülmüştür. Ancak,
absorpsiyon ve soğutarak uzaklaştırma metotlarının da kullanıldığı yöntemler
vurgulanmıştır.

Keywords

çöp gazı, siloksan, birikinti oluşumu, enerji üretimi, uzaklaştırma

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