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Bu çalışmada etanolden hidrojen üretim prosesi Aspen Plus yardımıyla geliştirilmiştir. Geliştirilen simülasyon kullanılarak öncelikle üç farklı reaktör türünün etanol dönüşüm oranlarına etkisi incelenmiş olup RGibss reaktörünün REquilibrium ve RPlug reaktörlerien oranla en iyi dönüşüm oranına sahip olduğu belirlenmiştir. İki farklı aktivite katsayısı modeli olan UNIFAC ve UNIQUAC modelleri test edilmiş olup en iyi dönüşüm oranının UNIQUAC modelinde olduğu tespit edilmiştir. En iyi reaktör ve aktivite katsayısı modeli belirlendikten sonra, sıcaklık, basınç ve karışım oranı gibi reaktör çalışma parametrelerinin etanol dönüşüm oranına olan etkileri sırasıyla çalışılmıştır. Yapılan çalışma neticesinde sıcaklık, basınç ve karışım oranı sırasıyla 500 °C, 1 atm ve 1/4 olarak belirlenmiştir. Son olarak üretilen hidrojen gazının saflaştırılıp kullanabilir hale gelmesi için bir ayrıştırıcı kullanılmış olup %99,9 saflıkta saf H2 elde edilmiştir. Elde edilen veriler Aspen Plus simülatörünün başarılı bir şekilde gerçekleştirildiğini göstermekte olup bu tür başarılı simülasyonların deneysel maliyetleri ve zaman kaybını minimize edebileceğini göstermektedir.
In this study, the ethanol hydrogen production process was developed with the help of Aspen Plus. With the advanced simulation, the impact of three different types of reactors on the ethanol conversion rates was first studied and the RGibss reactor was determined to have the best conversion rates compared to the REquilibrium and the RPlug reactors. Two different activity ratio models, UNIFAC and UNIQUAC models, have been tested and the best conversion rate has been found in the UNIQUAC model. After the best reactor and activity ratio model was determined, the effects of the reactor work parameters such as temperature, pressure and mixture ratio on the ethanol conversion rate were studied accordingly. As a result of the study, the temperature, pressure and mixture ratio were determined at 500 °C, 1 atm and 1/4 respectively. A separator has been used to make the final hydrogen gas purified and usable, and a pure H2 has been obtained at 99.9% purity. The obtained data shows that the Aspen Plus simulator has been successfully performed and that such successful simulations can minimize experimental costs and time waste.
In the present study, hydrogen production process from ethanol was developed with the aid of Aspen Plus. Firstly, the effect of reactor types on ethanol conversion rates was investigated by simulating three different reactors in Aspen Plus and it was determined that the RGibss reactor provided the best conversion rate compare to REquilibrium and RPlug. Two different activity coefficient models, UNIFAC and UNIQUAC, have been tested and the best conversion rate has attained with the use UNIQUAC model. Once the optimal best reactor type and activity coefficient model were decided, the effects of reactor operating parameters such as temperature, pressure and mixing ratio on ethanol conversion rate were studied respectively. Temperature, pressure and mixing ratio for the optimal conversion rate of ethanol were determined as 500 °C, 1 atm and 1/4 respectively. Finally, a separator was used to purify the hydrogen gas and pure H2 with a purity of 99.9% was subsequently produced. The obtained data indicate that Aspen Plus simulator has been performed successfully and shows that such successful simulations can minimize experimental costs and time loss.
Alan : Mühendislik
Dergi Türü : Ulusal
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