Year 2020, Volume 40 , Issue 2, Pages 195 - 205 2020-10-31

PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL
TÜRK LİNYİTLERİNİN YERALTINDA KÖMÜR GAZLAŞTIRMA PERFORMANSLARININ STOKİOMETRİK DENGE MODELİ İLE BELİRLENMESİ

Engin CANBAZ [1] , Mesut GÜR [2]


Underground coal gasification (UCG) is a coal conversion process that enables the utilization of coal reserves in-situ, and it is an alternative technique to conventional mining methods. Previous experimental studies showed that UCG is a suitable method for the usage of low-rank coal or lignite reserves, which have the major part in the Turkish coal reserves. In this study, a thermochemical equilibrium model of UCG process is developed to predict syngas composition and to compare UCG-performance of the selected lignite reserves in Turkey. The lignite sites are chosen according to the described UCG site selection criteria. The equilibrium model consists of gasification reactions and water-gas shift reaction and it considers the effect of the drying process. The model is validated using the results of the lab-scale experimental UCG study. The predictions are made for both oxygen and steam-gasification processes. Results show that the lignite reserves which have high moisture content but low carbon content are suitable for hydrogen-rich syngas production and hydrogen production capabilities of all reserves can be enhanced significantly by the additional steam supply as the gasification agent.
Yeraltında kömür gazlaştırma (YKG) işlemi, kömürlerin yeraltındayken işlenmesine olanak sağlayan ve bu yönüyle, geleneksel madencilik yöntemlerine alternatif oluşturan bir kömür işleme prosesidir. Son deneysel çalışmalar ile YKG işleminin, ülkemizde de yüksek miktarda bulunan, düşük kaliteli kömürlere uygulanması durumunda da etkili olduğu ortaya konmuştur. Bu çalışma kapsamında ise, YKG işlemi sonucu üretilen sentez gazın içeriğini tahmin edebilecek bir termodinamik denge modeli oluşturulmuş ve oluşturulan model düşük kalitedeki kömür rezervlerinden üretebilecek sentez gazının özelliklerinin tahmini için kullanılmıştır. Denge modeli, gazlaştırma reaksiyonlarının ve su-gazı dönüşümü reaksiyonunun etkisini dikkate almakta ve kömür kuruması sonucu ortaya çıkan su buharının yapay gaz üzerindeki etkisini belirleyebilmektedir. Oluşturulan denge modeli, literatürde yer alan laboratuvar ölçekli deneysel YKG çalışmasının sonuçları ile doğrulanmıştır. Daha sonrasında ülkemizdeki linyit rezervlerinden YKG işlemi için uygun olduğu belirlenen rezervler, modelde girdi olarak kullanılmış ve rezervler için elde edilen YKG performans çıktıları birbirleriyle karşılaştırılmıştır. Performans analizi için her rezervin oksijen ve buhar ile gazlaştırma çıktıları incelenmiştir. Değerlendirme sonucu yüksek nem ve düşük karbon içeriğine sahip linyitlerin yüksek hidrojen yüzdeli sentez gaz üretimine elverişli olduğu, gazlaştırma ajanı olarak buhar beslemesi yapılması halinde ise tüm rezervlerin hidrojen üretim kapasitelerinin arttırılabileceği belirlenmiştir.
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Primary Language en
Subjects Engineering, Mechanical
Journal Section Research Article
Authors

Orcid: 0000-0002-6287-8770
Author: Engin CANBAZ
Institution: İSTANBUL TEKNİK ÜNİVERSİTESİ
Country: Turkey


Orcid: 0000-0002-0407-0298
Author: Mesut GÜR
Institution: İSTANBUL TEKNİK ÜNİVERSİTESİ
Country: Turkey


Dates

Publication Date : October 31, 2020

Bibtex @research article { isibted816964, journal = {Isı Bilimi ve Tekniği Dergisi}, issn = {1300-3615}, address = {}, publisher = {Türk Isı Bilimi ve Tekniği Derneği}, year = {2020}, volume = {40}, pages = {195 - 205}, doi = {10.47480/isibted.816964}, title = {PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL}, key = {cite}, author = {Canbaz, Engin and Gür, Mesut} }
APA Canbaz, E , Gür, M . (2020). PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL . Isı Bilimi ve Tekniği Dergisi , 40 (2) , 195-205 . DOI: 10.47480/isibted.816964
MLA Canbaz, E , Gür, M . "PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL" . Isı Bilimi ve Tekniği Dergisi 40 (2020 ): 195-205 <https://dergipark.org.tr/en/pub/isibted/issue/57550/816964>
Chicago Canbaz, E , Gür, M . "PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL". Isı Bilimi ve Tekniği Dergisi 40 (2020 ): 195-205
RIS TY - JOUR T1 - PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL AU - Engin Canbaz , Mesut Gür Y1 - 2020 PY - 2020 N1 - doi: 10.47480/isibted.816964 DO - 10.47480/isibted.816964 T2 - Isı Bilimi ve Tekniği Dergisi JF - Journal JO - JOR SP - 195 EP - 205 VL - 40 IS - 2 SN - 1300-3615- M3 - doi: 10.47480/isibted.816964 UR - https://doi.org/10.47480/isibted.816964 Y2 - 2020 ER -
EndNote %0 Isı Bilimi ve Tekniği Dergisi PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL %A Engin Canbaz , Mesut Gür %T PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL %D 2020 %J Isı Bilimi ve Tekniği Dergisi %P 1300-3615- %V 40 %N 2 %R doi: 10.47480/isibted.816964 %U 10.47480/isibted.816964
ISNAD Canbaz, Engin , Gür, Mesut . "PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL". Isı Bilimi ve Tekniği Dergisi 40 / 2 (October 2020): 195-205 . https://doi.org/10.47480/isibted.816964
AMA Canbaz E , Gür M . PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL. Isı Bilimi ve Tekniği Dergisi. 2020; 40(2): 195-205.
Vancouver Canbaz E , Gür M . PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL. Isı Bilimi ve Tekniği Dergisi. 2020; 40(2): 195-205.
IEEE E. Canbaz and M. Gür , "PREDICTION OF UNDERGROUND COAL GASIFICATION PERFORMANCE OF TURKISH LIGNITE RESERVES USING STOICHIOMETRIC EQUILIBRIUM MODEL", Isı Bilimi ve Tekniği Dergisi, vol. 40, no. 2, pp. 195-205, Oct. 2020, doi:10.47480/isibted.816964