The coal water slurry with different concentrations was prepared using 4 different kinds of coal (gas coal, fat coal, coking coal and lean coal) and dewatered using microwave The effect of coal particle, rank, strengt...The coal water slurry with different concentrations was prepared using 4 different kinds of coal (gas coal, fat coal, coking coal and lean coal) and dewatered using microwave The effect of coal particle, rank, strength and irradiation time of microwave on the moisture content of the filter cake was investigated In addition, the dewatering efficiency using microwave and electronic heat under same power and time was compared The results show that the moisture content of the coal cake depends on the particle size and coal rank The fine coal has higher water content in its cake With increasing coal rank, the moisture content in the cake decrease and then increase and the coking coal cake has the lowest value With increasing irradiation time, the water content of the cake with different rank and particle size tends to be same The water content in the cake decreases with the enhancement of the microwave strength, but has no effect on the relationship between the water content and the gronularity Compared with electronic heating, microwave decrease dewatering time, therefore, decrease energy consumption and improve展开更多
Nanchuan lean coal in which inorganic sulphur had been removed was used to investigate the effect of electrolysis conditions on organic sulphur removal from coal The results indicated that the amount of sulfur remov...Nanchuan lean coal in which inorganic sulphur had been removed was used to investigate the effect of electrolysis conditions on organic sulphur removal from coal The results indicated that the amount of sulfur removed in creases with time, but the removal rate becomes slower When the concentration of HCl is lower than 32?M, the sulfur removal changes little; when it is 32?M～48?M, the sulfur removal is improved significantly The higher concentration of coal slurry, the lower the sulfur removal rate The desulfrization of organic sulphur is 18% for 005?g/mL coal slurry in 10?h in acidic medium Therefore, organic sulphur is more difficult to be removed than inorganic sulphur by展开更多
The air environmental quality of Ma′anshan City in Anhui Province was investigated by using of the Air Pollution Index (API) method. The result showed that the air environmental quality at Ma’anshan City during 1997...The air environmental quality of Ma′anshan City in Anhui Province was investigated by using of the Air Pollution Index (API) method. The result showed that the air environmental quality at Ma’anshan City during 1997-2000 was Ⅱ-Ⅰ grade (the air quality is just good), and the critical pollutants were TSP or NOx. Compared with other methods, the usage of API method may accurately reveal and easily calculate the degree of air pollution, and let the local residences and environmental personnel clearly understand the circumstance of air pollution.展开更多
文摘The coal water slurry with different concentrations was prepared using 4 different kinds of coal (gas coal, fat coal, coking coal and lean coal) and dewatered using microwave The effect of coal particle, rank, strength and irradiation time of microwave on the moisture content of the filter cake was investigated In addition, the dewatering efficiency using microwave and electronic heat under same power and time was compared The results show that the moisture content of the coal cake depends on the particle size and coal rank The fine coal has higher water content in its cake With increasing coal rank, the moisture content in the cake decrease and then increase and the coking coal cake has the lowest value With increasing irradiation time, the water content of the cake with different rank and particle size tends to be same The water content in the cake decreases with the enhancement of the microwave strength, but has no effect on the relationship between the water content and the gronularity Compared with electronic heating, microwave decrease dewatering time, therefore, decrease energy consumption and improve
文摘Nanchuan lean coal in which inorganic sulphur had been removed was used to investigate the effect of electrolysis conditions on organic sulphur removal from coal The results indicated that the amount of sulfur removed in creases with time, but the removal rate becomes slower When the concentration of HCl is lower than 32?M, the sulfur removal changes little; when it is 32?M～48?M, the sulfur removal is improved significantly The higher concentration of coal slurry, the lower the sulfur removal rate The desulfrization of organic sulphur is 18% for 005?g/mL coal slurry in 10?h in acidic medium Therefore, organic sulphur is more difficult to be removed than inorganic sulphur by
文摘The air environmental quality of Ma′anshan City in Anhui Province was investigated by using of the Air Pollution Index (API) method. The result showed that the air environmental quality at Ma’anshan City during 1997-2000 was Ⅱ-Ⅰ grade (the air quality is just good), and the critical pollutants were TSP or NOx. Compared with other methods, the usage of API method may accurately reveal and easily calculate the degree of air pollution, and let the local residences and environmental personnel clearly understand the circumstance of air pollution.
