Yapılı dolgulu kolonda sıvı ve gaz fazı kütle transfer katsayıları ve ara yüzey alanı

Year 2020, Volume: 35 Issue: 3, 1333 - 1352, 07.04.2020

Gizem Genç Çelikçi Duygu Uysal Zıraman Bekir Uysal

https://doi.org/10.17341/gazimmfd.640984

Cited By: 2

Abstract

Son
yıllarda karbondioksitin (CO₂) giderimi ve yapılı dolgulu kolonlarla ilgili çalışmalar ön plana çıkmaktadır. Bu doğrultuda yapılan bu çalışmada,
kendi imkanlarımızla tasarlanarak imal edilen yeni özgün bir yapılı dolgulu
kolonunun hidrodinamik ve kütle transfer katsayılarının karakterizasyonu yer
almaktadır. İlk olarak basınç düşüşü ölçümleri ile kolonun yükleme ve taşma noktaları
tespit edilmiş ve kolona beslenecek sıvı ve gaz akış hızlarının limitleri
saptanmıştır. Sıvı ve gaz akış hızları için bu aralıklar sırasıyla 0,002-0,0047
[m/s] ve 0,07-0,68 [m/s] olarak belirlenmiştir. Belirlenen gaz ve sıvı akış
hızlarında, sıvı tarafıve gaz tarafı bazlı bireysel fiziksel
hacimsel kütle transfer katsayıları deneysel olarak elde edilmiştir. Daha
sonra iki direnç teorisi ile CO₂-su sistemi için gaz tarafı bazlı
toplu fiziksel hacimsel kütle transfer katsayısı  hesaplanmıştır. Ayrıca belirlenen gaz ve sıvı
akış hızı aralıklarında, CO₂ ve sodyum hidroksit çözeltisi sistemi
ile deneyler yapılarak gaz tarafı bazlı toplu kimyasal hacimsel kütle transfer
katsayıları , Hatta sayıları (Ha) ve artış
faktörleri (E) hesaplanmıştır. Bu kimyasal sistem için elde edilen deneysel
bulgular,  hızlı sözde birinci dereceden
reaksiyon rejiminin kabul edilebilir olduğunu göstermiştir. Son olarak farklı
gaz ve sıvı akış hızlarında dolguların etkin ara yüzey alanı değerleri de belirlenmiştir.

Keywords

Yapılı dolgu karakterizasyonu, basınç düşüşü, kütle transfer katsayıları, artış faktörü, etkin ara yüzey alanı

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