Fluidized bed thermal analyzer for coal and biomass pyrolysis reactions - Database & Sql Blog Articles

MP24AE off-the-shelf supply

Hot 3528 white light 6-7LM

AVX tantalum capacitor TAJB106K016RNJ stock

It is a classical thermal analysis method that can test the instantaneous thermal effect of a substance at a specified temperature. It can start such as combustion, gasification, carbonization, and pyrolysis by adding solid and liquid reactants to a reactor with certain reaction conditions such as temperature and pressure. , various desulfurization and denitrification, catalyst regeneration and other chemical reactions. Fluidized bed thermal analyzers have been widely used in various fields such as research and development, process optimization, quality control and failure analysis in various materials and chemistry fields.

The pyrolysis of coal and biomass is a complex and rapid reaction, not only related to the mass transfer heat transfer process, but also contains complex chemical reaction mechanisms. Many industrial use of pyrolysis reactions

And because the chemical structure of the sample changes with the progress of the reaction and temperature, the traditional thermogravimetric analysis can accurately test the mechanism and kinetic parameters of the reaction process. The fluidized bed thermal analyzer is of great significance in the study of coal and biomass pyrolysis kinetics and reaction mechanism.

The time required for biomass and coal to complete pyrolysis at this temperature is within 15 s, which is much less than the test time in a typical laboratory size fluidized bed thermal analyzer. The product release time series characteristics of the pyrolysis process are difficult to monitor in conventional size reactors, and fluidized bed thermal analyzers provide new data for analyzing pyrolysis reaction mechanisms and process characteristics.

For the thermogravimetric method, the solid reactant sample cannot be loaded at the reaction temperature, so it is difficult to test the reaction rate at any temperature, and the test process is seriously affected by gas diffusion. The process has been developed using fluidized bed thermal analysis. instrument. By application

Testing the typical gas-solid reaction found that the measured kinetic parameters were closer to the intrinsic reaction process, revealing the functional characteristics of the instrument to enhance the heat and mass transfer during the reaction process and effectively reduce the influence of the external diffusion on the reaction.