Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6636375 | Fuel | 2015 | 10 Pages |
Abstract
Carbon dioxide gasification and coal pyrolysis rates were measured in a modified drop tube fixed bed reactor, accompanied with a rapid response, real-time gas analysis system. Rapid heating and fast pyrolysis of the coal sample are intended to approximate the injection of ambient temperature coal into a fluidized bed gasifier. Experiments were done from 833 °C to 975 °C and from 1 atm to 12 atm in a 4:1 mixture of CO2 and argon with coal particles ranging between 250 μm and 850 μm. Reaction rates and carbon conversions were calculated based on the CO signal from a quadrupole mass spectrometer. The random pore model closely fits the experimental results and fitting parameters are listed. Results from the effects of temperature and pressure, pyrolysis conditions, and characteristics of chars (surface area measurements, scanning electron microscope images) are presented.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Ying Wang, David A. Bell,