onay, özlem anadolu üniversitesi - porsuk meslek yüksekokulu, turkey , tunçbilek, esra anadolu üniversitesi - kimya mühendisliği bölümü, turkey , öz aksoy, derya osmangazi üniversitesi - maden mühendisliği bölümü, Turkey

UPGRADING OF LIGNITES BY FAST PYROLYSIS AND HIGH DENSITY DRY MAGNETIC SEPERATION

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In this study, fast pyrolysis followed by high intensity dry magnetic (HIDM) separation experiments were conducted to obtain liquid and solid fuels from Çayırhan region lignites. First pyrolysis experiments were performed in a well-swept resistively heated fixed-bed reactor in a nitrogen atmosphere, and pyrolysis temperature and heating rate were studied. Afterwards, pyrolysis, oil, solid and gas products were obtained and characteristics of the oil were determined by elemental analysis and 1H NMR. The highest oil yield (17.58%) was obtained at a pyrolysis temperature of 500˚C and heating rate of 350˚Cmin^-1. Under these conditions total sulphur removal and weight yield of char were obtained as 17.24% and 59.21%, respectively. HIDM separation experiments were then carried out by using the char of fast pyrolysis experiments to enable the use of char as a solid fuel by reducing ash and sulphur contents. In the HIDM separation experiments, roller speed, feed rate and angle of back splitter were optimized. After HIDM separation, solid product was analysed for ash, sulphur and higher heating value. At optimum conditions, ash was reduced to 46.72% while total sulphur was not reduced due to lack of size liberation.

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Lignite , Fast pyrolysis , Pyrolysis oil , Char , Magnetic Separation , Sulphur

Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering

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