The Experts below are selected from a list of 18525 Experts worldwide ranked by ideXlab platform
Hongcang Zhou - One of the best experts on this subject based on the ideXlab platform.
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high Temperature air steam blown Gasification of coal in a pressurized spout fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
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High-Temperature air/steam-blown Gasification of coal in a pressurized spout-fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
Paul T. Williams - One of the best experts on this subject based on the ideXlab platform.
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Hydrogen production from high Temperature steam catalytic Gasification of bio-char
Journal of the Energy Institute, 2016Co-Authors: Qari M.k. Waheed, Paul T. WilliamsAbstract:Hydrogen production from the catalytic steam Gasification of bio-char derived from the pyrolysis of sugar cane bagasse has been investigated in relation to Gasification Temperature up to 1050 °C, steam flow rate from 6 to 25 ml h−1 and type of Nickel catalyst. The catalysts used were Ni-dolomite, Ni–MgO and Ni–Al2O3, all with 10% nickel loading. The hydrogen yield in the absence of a catalyst at a Gasification Temperature of 950 °C was 100.97 mmol g−1 of bagasse char. However, the presence of the Ni–MgO and Ni–Al2O3 catalysts produced significantly improved hydrogen yields of 178.75 and 187.25 mmol g−1 of bagasse char respectively at 950 °C. The hydrogen yield from the char with the Ni-dolomite only showed a modest increase in hydrogen yield. The influence of Gasification Temperature showed that the optimum Temperature to obtain the highest hydrogen yield was 950 °C. Increase in Gasification Temperature from 750 to 950 °C significantly increased hydrogen yield from 45.30 to 187.25 mmol g−1 of bagasse char at 950 °C, but was followed by a decrease in yield at 1050 °C. The influence of steam flow rate showed that with the increase in steam flow rate from 6 to 15 ml h−1 hydrogen yield was increased from 187.25 to 208.41 mmol g−1 of bagasse char. Further increase in steam flow rate resulted in a decrease in hydrogen yield.
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Hydrogen from waste plastics by way of pyrolysis–Gasification
Proceedings of the Institution of Civil Engineers - Waste and Resource Management, 2014Co-Authors: Paul T. WilliamsAbstract:A screw kiln continuous reaction system was used to investigate the production of hydrogen from a representative waste plastic (polypropylene). The reactor system consisted of two stages, with pyrolysis of the plastic in the first-stage screw kiln, followed by catalytic Gasification of the product pyrolysis gases in the second stage. Two catalysts (a laboratory prepared Ni-Mg-Al catalyst and a commercial nickel catalyst) were used and the process conditions of Gasification Temperature and water injection rate were investigated. The results showed that the introduction of catalyst into the Gasification stage dramatically increased the hydrogen production. The gas and hydrogen production and amount of reacted water per hour were increased with the increase of the Gasification Temperature from 600 to 900°C for both the Ni-Mg-Al and the commercial nickel catalysts. The rate of water injection was also shown to be critical for hydrogen production. The maximum hydrogen produced was 52% of the maximum theoretica...
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pyrolysis Gasification of post consumer municipal solid plastic waste for hydrogen production
International Journal of Hydrogen Energy, 2010Co-Authors: Paul T. WilliamsAbstract:Abstract Post-consumer plastic waste derived from municipal solid waste was investigated using a two-stage, catalytic steam pyrolysis–Gasification process for the production of hydrogen. The three important process parameters of catalyst:plastic ratio, Gasification Temperature and water injection rate were investigated. Temperature-programmed oxidation (TPO) and scanning electron microscopy (SEM) methods were used to analyse the reacted catalysts. The results showed that there was little influence of catalyst:plastic ratio between the range 0.5 and 2.0 (g/g) on the mass balance and gas composition for the pyrolysis–Gasification of waste plastics; this might be due to the effective catalytic activity of the Ni–Mg–Al catalyst. However, increasing the Gasification Temperature and the water injection rate resulted in an increase of total gas yield and hydrogen production. The coke formation on the catalyst was reduced with increasing use of catalyst; however, a maximum coke formation (9.6 wt.%) was obtained at the Gasification Temperature of 700 °C when the influence of Gasification Temperature was investigated. The maximum coke formation was obtained at the water injection rate of 4.74 g h −1 , and a more reactive form of coke seemed to be formed on the catalyst with an increase of the water injection rate, according to the TPO experiments.
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Pyrolysis–Gasification of post-consumer municipal solid plastic waste for hydrogen production
International Journal of Hydrogen Energy, 2010Co-Authors: Paul T. WilliamsAbstract:Abstract Post-consumer plastic waste derived from municipal solid waste was investigated using a two-stage, catalytic steam pyrolysis–Gasification process for the production of hydrogen. The three important process parameters of catalyst:plastic ratio, Gasification Temperature and water injection rate were investigated. Temperature-programmed oxidation (TPO) and scanning electron microscopy (SEM) methods were used to analyse the reacted catalysts. The results showed that there was little influence of catalyst:plastic ratio between the range 0.5 and 2.0 (g/g) on the mass balance and gas composition for the pyrolysis–Gasification of waste plastics; this might be due to the effective catalytic activity of the Ni–Mg–Al catalyst. However, increasing the Gasification Temperature and the water injection rate resulted in an increase of total gas yield and hydrogen production. The coke formation on the catalyst was reduced with increasing use of catalyst; however, a maximum coke formation (9.6 wt.%) was obtained at the Gasification Temperature of 700 °C when the influence of Gasification Temperature was investigated. The maximum coke formation was obtained at the water injection rate of 4.74 g h −1 , and a more reactive form of coke seemed to be formed on the catalyst with an increase of the water injection rate, according to the TPO experiments.
Rui Xiao - One of the best experts on this subject based on the ideXlab platform.
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high Temperature air steam blown Gasification of coal in a pressurized spout fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
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High-Temperature air/steam-blown Gasification of coal in a pressurized spout-fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
Baosheng Jin - One of the best experts on this subject based on the ideXlab platform.
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high Temperature air steam blown Gasification of coal in a pressurized spout fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
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High-Temperature air/steam-blown Gasification of coal in a pressurized spout-fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
Mingyao Zhang - One of the best experts on this subject based on the ideXlab platform.
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high Temperature air steam blown Gasification of coal in a pressurized spout fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...
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High-Temperature air/steam-blown Gasification of coal in a pressurized spout-fluid bed
Energy & Fuels, 2006Co-Authors: Rui Xiao, Mingyao Zhang, Baosheng Jin, Yaji Huang, Hongcang ZhouAbstract:The concept of high-Temperature air/steam-blown Gasification technology for converting coal into low-caloric-value gas for power generation is proposed and evaluated experimentally. Preliminary experiments are performed in a 0.1 MW thermal input pressurized spout-fluid bed gasifier. The influences of the gasifying agent preheat Temperature, the Gasification Temperature and pressure, the equivalence ratio, the ratio of steam-to-coal on gas composition, gas higher heating value, carbon conversion, and cold gas efficiency are examined. The experimental results prove the feasibility of high-Temperature air/steam-blown Gasification process. The gas heating value is increased by 23%, when the gasifying agent Temperature is increased from 300 to 700 °C. For the operation conditions studied, the results show that Gasification Temperature is the most important factor influencing coal Gasification in the spout-fluid bed. The gasifier performance is improved at elevated pressure mainly due to the better fluidization...