Pyrolysis Kinetics of Turkish Bituminous Coals by Thermal Analysis

İffet YAKAR ELBEYLİ; Sabriye PİŞKİN

Makale detayları

Pyrolysis Kinetics of Turkish Bituminous Coals by Thermal Analysis

Yazarlar:

İffet YAKAR ELBEYLİ | Sabriye PİŞKİN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2004 Vol.28 Issue 4, pp.233-240

Belge Tipi:

Makale

Yayın Tarihi:

3/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000745084

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

Simultaneous thermogravimetry-differential thermal analysis  (TG-DTA) was used to study the pyrolysis kinetics of Turkish  bituminous coals.  Thermogravimetry (TG) and derivative  thermogravimetry (DTG) were employed to measure the weight changes and  rates of weight loss, which were used for comparison of the thermal  behaviour of several coals and calculation of their kinetic  parameters.  Coal samples were heated in TG-DTA apparatus in an inert  atmosphere (100 ml min-1 nitrogen) at a temperature range of  25-1000 °C. The activation energy (Ea) and pre-exponential factor (A)  were calculated from the experimental results by using an  Arrhenius-type kinetic model.  The data indicate that the pyrolysis of  coals is a 1-stage process.  The decomposition stage (350-700 °C) has  a best fit with first-order kinetics with Ea = 65-97 kJ mol-1.

 

Simultaneous thermogravimetry-differential thermal analysis  (TG-DTA) was used to study the pyrolysis kinetics of Turkish  bituminous coals.  Thermogravimetry (TG) and derivative  thermogravimetry (DTG) were employed to measure the weight changes and  rates of weight loss, which were used for comparison of the thermal  behaviour of several coals and calculation of their kinetic  parameters.  Coal samples were heated in TG-DTA apparatus in an inert  atmosphere (100 ml min-1 nitrogen) at a temperature range of  25-1000 °C. The activation energy (Ea) and pre-exponential factor (A)  were calculated from the experimental results by using an  Arrhenius-type kinetic model.  The data indicate that the pyrolysis of  coals is a 1-stage process.  The decomposition stage (350-700 °C) has  a best fit with first-order kinetics with Ea = 65-97 kJ mol-1.

Makale detayları

Pyrolysis Kinetics of Turkish Bituminous Coals by Thermal Analysis

Yazarlar: İffet YAKAR ELBEYLİ | Sabriye PİŞKİN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2004 Vol.28 Issue 4, pp.233-240

Belge Tipi: Makale

Yayın Tarihi: 3/2004

Belge Dili: Türkçe

Document ID (Org No.): 2000745084

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

İffet YAKAR ELBEYLİ | Sabriye PİŞKİN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2004 Vol.28 Issue 4, pp.233-240

Belge Tipi:

Makale

Yayın Tarihi:

3/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000745084

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160