Haze weather has become a serious environmental pollution problem which occurs in many Chinese cities. One of the most critical factors for the formation of haze weather is the exhausts of coal combustion, thus it is meaningful to figure out the causation mechanism between urban haze and the exhausts of coal combustion. Based on above considerations, the fault tree analysis (FAT) approach was e...

Designing pulverized coal combustion simulation and visualization systems is still a complex task. The current solutions, such as the commercial CFD packages are focused on the precision of the computation. Our solution is suited to the education and computer graphics area, where the precision does not take the first, but also not the last place. The main factor in our solution utilizes the int...

The possibility of applying biochar in mild torrefaction treatment to improve the thermochemical characteristics ground biomass was focus study. Camelina straw and switchgrass were torrefied a reactor using microwave irradiation at temperatures 250 °C 300 with residence times 10, 15 20 min, under nitrogen-activated inert conditions. Both addition more than 10% time significantly affected produc...

This report describes work completed during the eleventh quarter of a DOE-funded study of mineral transformations and ash deposition during staged combustion. Accomplishments included repairs and improvements to the laboratory combustor, collection of deposits and observation of deposition behavior as a function of operating conditions, and analysis of deposit samples collected under both stage...

The practice of cofiring biomass in full-scale coal utility plants is increasing, due to the benefits of reduced fossil fuel based CO2 emissions. Biomass also tends to have a lower sulphur content than coal and therefore emissions of SO2 can be reduced. The same is true for NOx emissions from lower fuel nitrogen content. Further, the lower flame temperatures and different combustion stoichiomet...

In contrast to arsenic (As) poisoning caused by naturally occurring inorganic arsenic-contaminated water consumption, coal arsenic poisoning (CAP) induced by elevated arsenic exposure from coal combustion has rarely been reported. In this study, the concentrations and distributions of urinary arsenic metabolites in 57 volunteers (36 subjects with skin lesions and 21 subjects without skin lesion...

The indicative ability of a gas indicator for the spontaneous combustion coal is affected by secondary oxidation oxidized coal, from old goafs, entering new goaf through air leakages. This phenomenon can affect accuracy early warning systems regarding in goaf. In this research, three kinds were selected to carry out simulation experiment which temperature-programmed experimental device was used...

The pulp and paper industry, which is a strategic economic sector in Europe, is very demanding in terms of energy and water. The high water consumption results in the generation of large volumes of wastewater, which must be treated to accomplish with regulations. Therefore, sludge is unavoidable generated and its management is a key issue for the pulp and paper industry. Given prohibitions on l...

In this work, a model for the nitrogen chemistry in the oxy-fuel combustion of pulverized coal has been developed. The model is a chemical reaction engineering type of model with a detailed reaction mechanism for the gas-phase chemistry, together with a simplified description of the mixing of flows, heating and devolatilization of particles, and gas solid reactions. The model is validated by co...

Nearly all China’s rural residents and a shrinking fraction of urban residents use solid fuels (biomass and coal) for household cooking and heating. As a result, by use of global metaanalyses of epidemiological studies, it is estimated that indoor air pollution from solid fuel use in China is responsible for ~ 420,000 premature deaths annually, more than the ~300,000 attributed to urban outdoor...