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The objective of this work was to find the optimal preparation methods of semi-coke and investigate the absorption mechanisms in the removals of SO2 and NOx. Semi-cokes, treated by different combined activation methods, were used to remove SO2 and NO from simulated flue gas in a fixed bed. Detailed characterizations were discussed by BET, SEM and FTIR. Results showed the activated and loaded semi-cokes...
The pyrolysis mechanism of Zhundong sub-bituminous coal (ZD) was investigated by tube furnace, gas chromatography and GC/MS. Coal samples were pyrolyzed in a tube furnace at any of six temperatures (from 500 to 1000°C in 100°C increments) and the pyrolysis products were analyzed. The volatile release characteristics were investigated by gas chromatography and the tars generated during pyrolysis were...
The influence of hydrothermal upgrading on the configuration of nitrogen and sulphur species in coal was investigated in this paper. Hydrothermal modification of three typical Chinese lignite was performed at 200°C, 250°C and 300°C. It was found that hydrothermal modification reduced the moisture content of coal and therefore increased the heating value. X-ray photoelectron spectroscopy (XPS) was...
One of hyperbranched polymers is developed as a novel nanoscale initiator to enhance the heat sink of endothermic hydrocarbon fuels to meet the great cooling requirement of hypersonic aircrafts. In this work, the hyperbranched polyglycerol (HPG) is treated with palmitoyl chloride to obtain a fuel-soluble product, palmitoyl-hyperbranched polyglycerol (PHPG). The thermogravimetric analyses show that...
Slow pyrolysis of moso bamboo was performed using thermogravimetry–Fourier transform infrared analysis (TG–FTIR) and a laboratory-scale pyrolysis reactor. The effects of temperature on slow pyrolysis behavior, product properties, and carbon and energy yields at pyrolysis temperatures of 300–700°C were discussed. Typical compounds such as CO2, H2O, CH4, and CO were identified by their characteristic...
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