Pyrolysis characteristics of oil-field sludge and the comparison of kinetic analysis with two representative methods

Co-pyrolysis characteristics of long flame coal mixed with duckweed in different proportions were studied by using TG. And the kinetic parameters was also figured out by using the method of Coats-Redfern. It was exhibited significant synergistic effect created more the light component between duckweed and coal during co-pyrolysis, The pyrolysis rate of flame coal is much smaller than biomass, and the starting pyrolysis temperature of flame coal is higher than biomass. The kinetic analysis indicated that the pyrolytic processes can be described as first order reactions model. The average activation energy of duckweed and coal was 39.14kJ/mol and 46.43kJ/mol , and with the increasing of the duckweed proportion, pyrolysis activation energy was decreased.

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Non-isothermal kinetic analysis and feasibilty study of medium grade crude oil field

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-007-8637-z ◽

2008 ◽

Vol 91 (3) ◽

pp. 745-748 ◽

Cited By ~ 20

Author(s):

M. V. Kök

Keyword(s):

Crude Oil ◽

Kinetic Analysis ◽

Oil Field ◽

Isothermal Kinetic Analysis ◽

Isothermal Kinetic

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Pyrolysis characteristics and kinetic analysis of different dewatered sludge

Bioresource Technology ◽

10.1016/j.biortech.2014.07.111 ◽

2014 ◽

Vol 170 ◽

pp. 325-330 ◽

Cited By ~ 20

Author(s):

Qiang Zhang ◽

Huan Liu ◽

Peng Liu ◽

Hongyun Hu ◽

Hong Yao

Keyword(s):

Kinetic Analysis ◽

Pyrolysis Characteristics ◽

Dewatered Sludge

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Vacuum pyrolysis characteristics and kinetic analysis of liquid crystal from scrap liquid crystal display panels

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2016.12.026 ◽

2017 ◽

Vol 327 ◽

pp. 55-63 ◽

Cited By ~ 21

Author(s):

Ya Chen ◽

Lingen Zhang ◽

Zhenming Xu

Keyword(s):

Liquid Crystal ◽

Kinetic Analysis ◽

Liquid Crystal Display ◽

Pyrolysis Characteristics ◽

Vacuum Pyrolysis

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Pyrolysis Characteristics and Kinetic Analysis of Sediment from the Dianchi Lake in China

International Journal of Chemical Engineering ◽

10.1155/2018/1759602 ◽

2018 ◽

Vol 2018 ◽

pp. 1-7

Author(s):

Zhenfen Wu ◽

Huilong Luo

Keyword(s):

Kinetic Analysis ◽

Lake Sediment ◽

Reaction Model ◽

Dianchi Lake ◽

Heating Rates ◽

Gaseous Products ◽

Pyrolysis Characteristics ◽

Order Chemical Reaction ◽

Evolution Characteristics ◽

Tg And Dtg

Pyrolysis properties and kinetic analysis of lake sediment, as well as evolution characteristics of the gaseous products at 5°C/min, 10°C/min, and 20°C/min, were investigated by TG-FTIR. Comparison to the TG and DTG curves at different heating rates, the pyrolysis process at 10°C/min could describe the sediment pyrolysis characteristics better than at 5°C/min and 20°C/min; thus the process of sediment pyrolysis could be considered as four stages. From the kinetics analysis, the nth-order chemical reaction model was suitable to describe the sediment pyrolysis reaction well. The values of n were within 2.55–3.42 and activation energy E was ranged from 15.83 KJ/mol to 57.92 KJ/mol at different heating rates. The gaseous products of H2O, CO2, CO, CH4, and SO2 and several functional groups (C-H, C=O, and C-O) could be found from the IR spectrum. From the evolution characteristics with the temperature, there were two evolution peaks for CO2 and one peak for CH4 and SO2. However, the evolution of CO always increased. Besides, the evolution peak for CO2, CH4, and SO2 all shifted to the low temperature region with the decrease of heating rate. The results could provide theoretical basis for harmless treatment and resource utilization of lake sediment.

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