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Determination of Combustion Efficiency of the Chemical Looping Combustion of Semirara Coal With Fe3O4-FeO Through Thermogravimetric and Solid Residue Analysis (2014-2015)

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  • Determination of Combustion Efficiency of the Chemical Looping Combustion of Semirara Coal With Fe3O4-FeO Through Thermogravimetric and Solid Residue Analysis (2014-2015)

Thesis Archive

Determination of Combustion Efficiency of the Chemical Looping Combustion of Semirara Coal With Fe3O4-FeO Through Thermogravimetric and Solid Residue Analysis (2014-2015)

Jonathan S. Adriano
Julieta Anna Marie S. Almeda
Reanna S. Ching

Abstract:

-“Chemical looping combustion has the prospective of minimizing the intensive energy needed in carbon capture separation, as well as lessens the problem on pollution in power-generating companies. Scrap iron was used as the metal oxide to minimize expense and was paired with Semirara coal as solid fuel. The products yielded after combustion was either in solid or gaseous state, and the solid residue was analysed for further study. The TG profile, along with the solid residue analysis, was studied to determine the combustion efficiency. The effect of temperature and metal oxide to coal ratio on the weight loss and composition of the solid residue was also examined. To get a Tyler equivalent of 150 mesh, the coal and scrap metal were first sieved. The scrap metal had to undergo heat treatment at 950℃ before being used as metal oxide for the combustion process, and it was determined that the metal oxide formed was a mixture of Fe2O3 and Fe3O4. The parameters used were 800, 900 and 1000°C for its temperature and 7:1, 8.5:1 and 10:1 for the metal oxide- fuel ratio. The result of the solid residue analysis shows that most of the components were iron and oxygen at approximately 75 and 20% respectively which came from the metal oxide; however, 2-3% carbon remained unburned. After getting the solid residue analysis and combining it with the weight loss obtained from the TG profile, the highest combustion efficiency was calculated to be 71.53%, which was the 7:1 ratio and at 800°C run. Based from the calculated combustion efficiencies, the hold temperature has no effect on the efficiency; on the other hand, it was found that as the metal oxide to fuel ratio increases, the combustion efficiency decreases. It was also observed that as the number of cycle increases, the combustion efficiency decreases.”

Adviser:

Ms. Marylou M. Uy
Dr. Nathaniel P. Dugos

[email protected]
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