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Co-firing of biomass and coal and biomass reduces the emission of pollutants and the overall effects have been extensively studied, but many aspects of the detailed mechanism remain uncertain. A number of studies have been previously made by us of emissions from the combustion in a fixed-bed furnace of bituminous coal and wood, both individually and together, and it was observed that biomass produced...
This paper presents the experimental results from co-firing blends of El Cerrejon (EC) coal and cereal co-product (CCP) using several ratios (100/0; 75/25; 50/50; 0/100 (w/w)) under air- and oxy-firing conditions, in a retrofitted 100kWth pulverised fuel combustor. An on-line high-resolution multi-component Fourier Transform Infra-red (FTIR) analyser was used to measure CO2, O2, H2O, CO, NO, NO2,...
The fly ash from municipal sewage sludge (MSS) incineration contains abundant phosphorus and can be used as phosphate fertilizer. However, fly ash also contains arsenic that is extremely poisonous to the environment. The toxicity of arsenic significantly depends on its speciation: As(III) is much more toxic than As(V). Addition of cotton stalk (CS) was proposed to promote the speciation transformation...
In the ever-increasing demand for alternative fuels, one promising solution is the partial substitution of conventional fossil fuel with biofuel rather than completely replacing it. In this experimental study, a 300kWth (thermal power) oil-fired furnace is fueled with blends of crude castor oil and diesel to examine the feasibility of using these blends as a substitute for pure diesel in industrial...
A demonstration test on the co-firing of a high-ratio of woody biomass (25% energy basis) with coal in a 150-MW class pulverized-coal boiler was conducted in Japan for the first time. To investigate the effect of the co-firing on the corrosion of the boiler heat-transfer tubes inside furnace wall and superheater, we collected the initial layer of the ash deposits (initial deposits) by inserting water-air-cooled...
Bioenergy with Carbon Capture and Storage (BECCS) is recognised as a key technology to mitigate CO2 emissions and achieve stringent climate targets due to its potential for negative emissions. However, the cost for its deployment is expected to be higher than for fossil-based power plants with CCS. To help in the transition to fully replace fossil fuels, co-firing of coal and biomass provide a less...
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