Coal Char Kinetics of Oxidation and Gasification Reactions
نویسندگان
چکیده
منابع مشابه
Gasification of Coal
2.1 Background .................................................................................................... 26 2.2 Syngas Classification Based on its Heating Value ........................................ 28 2.2.1 Low-Btu Gas ...................................................................................... 29 2.2.2 Medium-Btu Gas........................................................
متن کاملCorrosion in coal gasification atmospheres
Corrosion of metallic materials by coal gasification atmospheres has been the subject of extensive study for over 20 years. While many alloys were found to be resistant to attack by high moisture content gases representative of fluidized bed gasifiers at temperatures up to 900 OC, good resistance could not be sustained for more than a few thousand hours as a result of changes in the structure a...
متن کاملCarbon Dioxide Gasification of Kraft Black Liquor Char in a Laboratory Char Bed Reactor
In the current study a series of pyrolysis and CO2 gasification experiments were conducted on a bed of kraft black char under a perpendicular impinging jet. The experiments demonstrated that the char bed carbon gasification rates are externally mass transfer limited. The mass transfer is further decreased by a net molar out-flow caused by the conversion of one mole of reactant CO2 to two moles ...
متن کاملA Study on the Applicability of Kinetic Models for Shenfu Coal Char Gasification with CO2 at Elevated Temperatures
In this paper, measurements of the CO2 gasification kinetics for two types of Shenfu coal chars, which were respectively prepared by slow and rapid pyrolysis at temperatures of 950 °C and 1,400 °C, were performed by an isothermal thermo-gravimetric analysis under ambient pressure and elevated temperature conditions. Simultaneously, the applicability of the kinetic model for the CO2 gasification...
متن کاملThe effect of model fidelity on prediction of char burnout for single-particle coal combustion
Practical simulation of industrial-scale coal combustion relies on the ability to accurately capture the dynamics of coal subprocesses while also ensuring the computational cost remains reasonable. The majority of the residence time occurs post-devolatilization, so it is of great importance that a balance between the computational efficiency and accuracy of char combustion models is carefully c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemical and Process Engineering
سال: 2017
ISSN: 2300-1925
DOI: 10.1515/cpe-2017-0011