The reaction of NO with chars of sewage sludge, refuse derived fuel (RDF), and straw was investigated in a fixed bed reactor at temperatures from 800 to 900 degrees C and NO inlet concentrations from 400 to 1500 ppmv. The effect of ash forming elements in the chars was examined by comparing the reactivity of raw and demineralized chars. Compared to...
The reaction of NO with chars of sewage sludge, refuse derived fuel (RDF), and straw was investigated in a fixed bed reactor at temperatures from 800 to 900 degrees C and NO inlet concentrations from 400 to 1500 ppmv. The effect of ash forming elements in the chars was examined by comparing the reactivity of raw and demineralized chars. Compared to...
Hydrogen production from vegetable oil via a chemical looping process with hematite oxygen carriers has been carried out in a fixed-bed reactor at 1023.15-1173.15 K. The lattice oxygen release process and crystalline transformation for the oxygen carrier in the reaction process are investigated. Results indicate that the maximum H-2 composition ach...
Hydrogen production from vegetable oil via a chemical looping process with hematite oxygen carriers has been carried out in a fixed-bed reactor at 1023.15-1173.15 K. The lattice oxygen release process and crystalline transformation for the oxygen carrier in the reaction process are investigated. Results indicate that the maximum H-2 composition ach...
The measurement and analysis of reaction behavior, kinetics quantification, and mechanism clarification for gas solid reactions are essential to the research and development of process technologies in fields of chemical engineering, energy production, mineral processing, etc. By far, different approaches and instruments have been applied for gas-so...
Published in Journal of Thermal Analysis and Calorimetry
The influence of the temperature on the gasification of two manure char samples (char Pre and char SW) was evaluated in a thermogravimetric analyser (TG) using CO2 as the gasifying agent. Experimental data were fitted to seven kinetic models in order to reproduce accurately the gasification process. The classic volumetric (VM), shrinking core (SCM)...
At present in China, a fluidized bed combustor is not suitable to treat a high-water-containing (30-60 wt %) industrial biomass residue, such as distilled spirit lees (DSL), which can cause a low bed temperature and inflammation retardation. Our previous fundamental studies showed that the so-called dual fluidized bed gasification decoupling combus...
This study is devoted to characterizing the isothermal reaction kinetics of char gasification with CO2 in a micro fluidized bed reaction analyzer (MFBRA) in comparison to the measurement in a thermogravimetric analyzer (TGA). Under minimized inhibition of heat and mass transfer, the reaction rate was found to be much higher in the MFBRA than in the...
Through separating coal pyrolysis and char combustion and letting the pyrolysis gas burn in its passing through the combusting char bed, the so-called decoupling combustion has been proven to be effective for lowering NOx emission of coal and biomass combustion. The original design of the decoupling combustion was based on coal pyrolysis incurring ...
