The iron-based Coal-Direct Chemical Looping (CDCL) combustion process is an alternative to conventional oxy … instead of an air separation unit. The iron oxide is reduced using coal in the reducer reactor, producing highly-pure CO2 in … parametric optimization. This paper discusses recent parametric operational experience with sub-bituminous coal as the fuel …

biomass char were similar to those of two types of coal used as fuels for a DCFC system in spite of the char’s significantly … char, the maximum power density was 60–70% that of the corresponding value for coal under the same conditions. The …

Ohio State University Coal Direct Chemical Looping (CDCL) process directly converts coal, eliminating the need for a coal … consists of a countercurrent moving bed reducer reactor. In the proposed process, coal is injected into the middle of the … moving bed, whereby the coal quickly heats up and devolatilizes, splitting the reactor roughly into two sections with no …

Coal–CO2 slurry feed has been suggested as an attractive alternative to coal–water slurry feed for single … processing bituminous coal is studied here using a 1-D reduced order model. Results show that the CO2 gasification reaction plays … limitations lead to an up to 60% slower gasification rate, when compared to a system based on coal–water slurry. Accordingly, a …

products. The effects of temperature and coal rank on conversions of fuel-N to primary nitrogen products (char-N, HCN–N, NH3–N …-N and promoted the conversion of fuel-N to N2. Char-N yields increased, while volatile-N yields decreased as the coal rank … increased. In most of the conditions, NH3–N yields were higher than HCN–N yields during rapid pyrolysis of coal. In the case of …

This paper examines the techno-economic viability of hydrogen production from underground coal gasification (UCG) in … sustainable hydrogen production; given its negligible feedstock cost, the enormity of deep coal reserves in Western Canada and the …

sustaining hundreds of redox cycles have the advantage of converting a variety of carbonaceous fuels, such as natural gas, coal …. Specifically, two chemical looping processes are being developed and studied, the syngas chemical looping (SCL) and the coal direct …

first operational results using ilmenite and hard coal as fuel. The fuel reactor was fluidized with a mixture of air and … steam, so that partial CLC operation was achieved. Conversion of coal was gradually shifted from combustion to gasification …