Furkan KARTAL, Şebnem CİNGİSİZ, Uğur ÖZVEREN

Çan Kömürü Gazlaştırılmasının Sürüklemeli Akış Gazlaştırıcıda Aspen PLUS® Kullanılarak İncelenmesi

Enerji talebi nedeniyle aşırı fosil yakıt tüketimi, çevreye yayılan CO2 miktarında artışa neden olmaktadır. Gazlaştırma teknolojisi, CO2 emisyonuna neden olan kömür gibi fosil yakıtların temiz ve verimli kullanılmasını sağlar. Hava, buhar ve O2/CO2 karışımı gazlaştırma atmosferi olarak kullanılabilir. İnert gazların azaltılması (N2) ve sentez gazında yüksek sıcaklıklarda CO konsantrasyonunun artması yüksek kaliteli gaz elde edilmesine olanak tanır. Ticari gazlaştırıcılar arasında, sürüklemeli gazlaştırıcılarının katransız sentez gazı elde etme, yüksek karbon dönüşüm verimliliği ve yüksek kapasitelerde üretim gibi birçok avantajı bulunmaktadır. Ayrıca, sürüklemeli gazlaştırıcılarda kullanılacak kömür çeşidine bağlı olarak herhangi bir sınırlama yoktur. Sürüklemeli gazlaştırıcılarının performansı genellikle simülasyon programları ile incelenirken, düşük maliyetlerle tasarım ve optimizasyon yapılabilmektedir. Bu çalışmanın amacı Aspen Plus termodinamik simülasyon programını kullanarak Türk Linyitleri (Çan kömürü) için yeni bir sürüklemeli akış gazlaştırıcı modeli geliştirmektir ve gazlaştırıcıya ait çalışma parametrelerinin sentez gazı üzerindeki etkilerini parametrik çalışma yaparak incelemektir.

Anahtar Kelimeler:

Gazlaştırma, Çan Kömürü, Sürüklemeli Gazlaştırıcı, Aspen Plus

Investigation of Çan Coal Gasification in Entrained Flow Gasifier by using Aspen PLUS®

Excessive consumption of fossil fuels due to energy demand leads to an increase in the amount of CO2 emitted to the environment. Gasification technology enables clean and efficient use of fossil fuels such as coal, which cause CO2 emissions predominantly. Gasification can be utilized under several atmospheres such as air, steam, O2/CO2 mixture, etc. The reduction of inert gases (N2) and the increase of CO concentration at high temperatures in syngas provides high-quality gas. Among the commercial gasifiers, entrained flow gasifiers have many advantages such as obtaining tar-free synthesis gas, high carbon conversion efficiency, and production in high capacities. In addition, there is no limitation to the type of coal to be used. The performance of the entrained flow gasifiers can be examined by simulation programs and design optimization can be performed at a low cost. This study aims to develop a new entrained flow gasifier model for Turkish Lignite (Çan coal) using the Aspen Plus® thermodynamic simulation program and the effects of various parameters on the synthesis gas were investigated by sensitivity analysis.

Keywords:

Gasification, Çan Coal, Entrained Flow Gasifier, Aspen Plus,

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