The Effects of CO2, N2, and H2O Dilutions on NO Formation of Partially Premixed Synthesis Gas Combustion

Yıl 2019, Cilt: 40 Sayı: 4, 813 - 818, 31.12.2019

Suat Öztürk

https://doi.org/10.17776/csj.543130

Cited By: 5

Öz

One
of the main methods to decrease NO emission during the combustion of gases is
the use of diluents. This study is interested in the effects of CO₂,
N₂, and H₂O dilutions in the adiabatic, turbulent,
partially premixed combustion of synthesis gas. The amounts of NO emissions are
computationally determined. The results show that NO maximizes at 1.39 of
equivalence ratio under humid burning air conditions. The best reductive effect
on NO emissions indicates H₂O dilution followed by CO₂
and N₂. The increase in the dilution rates gradationally reduces NO.
The rising pressure enhances NO emissions with/without diluters. The increasing
inlet air and premixed mixture temperatures raises NO.

Anahtar Kelimeler

Synthesis gas, partially premixed, combustion, nitrogen oxide

Kısmi Önkarışımlı Sentez Gazı Yanmasının NO Oluşumu Üzerinde CO2, N2 ve H2O Seyreltmelerinin Etkileri

Öz

Gazların yakılmasında NO emisyonunu azaltmak için ana metodlardan biri seyrelticilerin kullanımıdır. Bu çalışma sentez gazının adyabatik, turbülanslı, kısmi önkarışımlı yanmasında CO2, N2 ve H2O seyreltmelerinin etkileri ile ilgilenmektedir. NO emisyonlarının miktarları hesaplamalı olarak saptanmıştır. Sonuçlar, nemli yakma havası şartlarında, NO’in, 1.39 ekivalans oranında maksimize olduğunu göstermektedir. NO emisyonları üzerinde en iyi azaltıcı etkiyi CO2 ve N2 tarafından takip edilen H2O seyrelticisi göstermektedir. Seyreltici oranlarındaki artış derecesel olarak NO’i azaltmaktadır. Yükselen basınç seyreltili veya seyreltisiz NO emisyonlarını artırmaktadır. Artan hava ve önkarıştırılmış karışım giriş sıcaklıkları NO’i yükseltmektedir.

Anahtar Kelimeler

Sentez gazı, kısmi karışımlı, yanma, nitrojen oksit

Kaynakça

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