The Experts below are selected from a list of 64848 Experts worldwide ranked by ideXlab platform
Cui Quan - One of the best experts on this subject based on the ideXlab platform.
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A novel reforming method for hydrogen production from biomass steam Gasification.
Bioresource technology, 2009Co-Authors: Ningbo Gao, Cui QuanAbstract:Abstract In this work, an experimental study of biomass Gasification in different operation conditions has been carried out in an updraft Gasifier combined with a porous ceramic reformer. The effects of Gasifier temperature, steam to biomass ratio (S/B), and reforming temperature on the Gas Characteristic parameters were investigated with and without porous ceramic filled in reformer. The results indicated that considerable synergistics effects were observed as the porous ceramic was filled in reformer leading to an increase in the hydrogen production. With the increasing Gasifier temperature varying from 800 to 950 °C, hydrogen yield increased from 49.97 to 79.91 g H2/kg biomass. Steam/biomass ratio of 2.05 seemed to be optimal in all steam-Gasification runs. The effect of reforming temperature for water-soluble tar produced in porous ceramic reforming was also investigated, and it was found that the conversion ratio of total organic carbon (TOC) contents is between 71.08% and 75.74%.
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hydrogen rich Gas production from biomass steam Gasification in an updraft fixed bed Gasifier combined with a porous ceramic reformer
International Journal of Hydrogen Energy, 2008Co-Authors: Ningbo Gao, Cui Quan, Fan GaoAbstract:Abstract This paper investigates the hydrogen-rich Gas produced from biomass employing an updraft Gasifier with a continuous biomass feeder. A porous ceramic reformer was combined with the Gasifier for producer Gas reforming. The effects of Gasifier temperature, equivalence ratio (ER), steam to biomass ratio (S/B), and porous ceramic reforming on the Gas Characteristic parameters (composition, density, yield, low heating value, and residence time, etc.) were investigated. The results show that hydrogen-rich synGas with a high calorific value was produced, in the range of 8.10–13.40 MJ/Nm3, and the hydrogen yield was in the range of 45.05–135.40 g H2/kg biomass. A higher temperature favors the hydrogen production. With the increasing Gasifier temperature varying from 800 to 950 °C, the hydrogen yield increased from 74.84 to 135.4 g H2/kg biomass. The low heating values first increased and then decreased with the increased ER from 0 to 0.3. A steam/biomass ratio of 2.05 was found as the optimum in the all steam Gasification runs. The effect of porous ceramic reforming showed the water-soluble tar produced in the porous ceramic reforming, the conversion ratio of total organic carbon (TOC) contents is between 22.61% and 50.23%, and the hydrogen concentration obviously higher than that without porous ceramic reforming.
Ningbo Gao - One of the best experts on this subject based on the ideXlab platform.
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A novel reforming method for hydrogen production from biomass steam Gasification.
Bioresource technology, 2009Co-Authors: Ningbo Gao, Cui QuanAbstract:Abstract In this work, an experimental study of biomass Gasification in different operation conditions has been carried out in an updraft Gasifier combined with a porous ceramic reformer. The effects of Gasifier temperature, steam to biomass ratio (S/B), and reforming temperature on the Gas Characteristic parameters were investigated with and without porous ceramic filled in reformer. The results indicated that considerable synergistics effects were observed as the porous ceramic was filled in reformer leading to an increase in the hydrogen production. With the increasing Gasifier temperature varying from 800 to 950 °C, hydrogen yield increased from 49.97 to 79.91 g H2/kg biomass. Steam/biomass ratio of 2.05 seemed to be optimal in all steam-Gasification runs. The effect of reforming temperature for water-soluble tar produced in porous ceramic reforming was also investigated, and it was found that the conversion ratio of total organic carbon (TOC) contents is between 71.08% and 75.74%.
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hydrogen rich Gas production from biomass steam Gasification in an updraft fixed bed Gasifier combined with a porous ceramic reformer
International Journal of Hydrogen Energy, 2008Co-Authors: Ningbo Gao, Cui Quan, Fan GaoAbstract:Abstract This paper investigates the hydrogen-rich Gas produced from biomass employing an updraft Gasifier with a continuous biomass feeder. A porous ceramic reformer was combined with the Gasifier for producer Gas reforming. The effects of Gasifier temperature, equivalence ratio (ER), steam to biomass ratio (S/B), and porous ceramic reforming on the Gas Characteristic parameters (composition, density, yield, low heating value, and residence time, etc.) were investigated. The results show that hydrogen-rich synGas with a high calorific value was produced, in the range of 8.10–13.40 MJ/Nm3, and the hydrogen yield was in the range of 45.05–135.40 g H2/kg biomass. A higher temperature favors the hydrogen production. With the increasing Gasifier temperature varying from 800 to 950 °C, the hydrogen yield increased from 74.84 to 135.4 g H2/kg biomass. The low heating values first increased and then decreased with the increased ER from 0 to 0.3. A steam/biomass ratio of 2.05 was found as the optimum in the all steam Gasification runs. The effect of porous ceramic reforming showed the water-soluble tar produced in the porous ceramic reforming, the conversion ratio of total organic carbon (TOC) contents is between 22.61% and 50.23%, and the hydrogen concentration obviously higher than that without porous ceramic reforming.
Fan Gao - One of the best experts on this subject based on the ideXlab platform.
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hydrogen rich Gas production from biomass steam Gasification in an updraft fixed bed Gasifier combined with a porous ceramic reformer
International Journal of Hydrogen Energy, 2008Co-Authors: Ningbo Gao, Cui Quan, Fan GaoAbstract:Abstract This paper investigates the hydrogen-rich Gas produced from biomass employing an updraft Gasifier with a continuous biomass feeder. A porous ceramic reformer was combined with the Gasifier for producer Gas reforming. The effects of Gasifier temperature, equivalence ratio (ER), steam to biomass ratio (S/B), and porous ceramic reforming on the Gas Characteristic parameters (composition, density, yield, low heating value, and residence time, etc.) were investigated. The results show that hydrogen-rich synGas with a high calorific value was produced, in the range of 8.10–13.40 MJ/Nm3, and the hydrogen yield was in the range of 45.05–135.40 g H2/kg biomass. A higher temperature favors the hydrogen production. With the increasing Gasifier temperature varying from 800 to 950 °C, the hydrogen yield increased from 74.84 to 135.4 g H2/kg biomass. The low heating values first increased and then decreased with the increased ER from 0 to 0.3. A steam/biomass ratio of 2.05 was found as the optimum in the all steam Gasification runs. The effect of porous ceramic reforming showed the water-soluble tar produced in the porous ceramic reforming, the conversion ratio of total organic carbon (TOC) contents is between 22.61% and 50.23%, and the hydrogen concentration obviously higher than that without porous ceramic reforming.
Wenqi Zhong - One of the best experts on this subject based on the ideXlab platform.
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experimental study on conveying Characteristics of a novel top discharge blow tank for fine cohesive powders
Powder Technology, 2021Co-Authors: Haipeng Zhu, Wenqi ZhongAbstract:Abstract A new conical-cylindrical top-discharge blow tank is designed, by introducing the pulsed Gas to facilitate discharging, for stable transportation for kaolin powders. A series of experimental studies on pulsed Gas Characteristic parameters like pulsed Gas flow rate Qpulsed (5 m3/h ≤ Qpulsed ≤ 25 m3/h), pulsed interval tpulsed (1 s ≤ tpulsed ≤ 5 s) and pulsed width τpulsed (50 ms ≤ τpulsed ≤ 250 ms) are conducted with the fluidized Gas flow rate of 12 m3/h. The experiments mainly test the powder mass flow rate and solid-Gas ratio in the conveying process. The results indicate that the mass flow rate and solid-Gas ratio range 12.6–278.04 kg/h and 0.9–19.56 kg/m3, respectively. With the increase of the pulsed Gas flow rate, the mass flow rate and solid Gas ratio first increase and then decrease. When the ratio of fluidized Gas flow rate to pulsed Gas flow rate is within 0.8–1.2, its conveying capacity reaches the maximum. Meanwhile, the increase in the pulsed interval leads to the decrease of the mass flow rate and solid-Gas ratio. Moreover, the increase in the pulsed width leads to the initial increase and then the stabilization of the mass flow rate and solid Gas ratio. When the pulsed width is 50 ms, the improvement of discharge would small. Conversely, increasing the pulsed width can increase the discharge, and stabilize subsequently until over 200 ms. Besides, moisture content is one of the important factors affecting kaolin powders discharge. When the moisture content is 0.83%, the pulsed Gas does not improve the discharge significantly. Meanwhile, pressure distribution at different locations in the tank is also measured. The results reveal that the introduction of pulsed Gas changes the pressure distribution in the tank. A pressure zone is formed on the upper part of the tank, which promotes the powder discharge.
Haipeng Zhu - One of the best experts on this subject based on the ideXlab platform.
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experimental study on conveying Characteristics of a novel top discharge blow tank for fine cohesive powders
Powder Technology, 2021Co-Authors: Haipeng Zhu, Wenqi ZhongAbstract:Abstract A new conical-cylindrical top-discharge blow tank is designed, by introducing the pulsed Gas to facilitate discharging, for stable transportation for kaolin powders. A series of experimental studies on pulsed Gas Characteristic parameters like pulsed Gas flow rate Qpulsed (5 m3/h ≤ Qpulsed ≤ 25 m3/h), pulsed interval tpulsed (1 s ≤ tpulsed ≤ 5 s) and pulsed width τpulsed (50 ms ≤ τpulsed ≤ 250 ms) are conducted with the fluidized Gas flow rate of 12 m3/h. The experiments mainly test the powder mass flow rate and solid-Gas ratio in the conveying process. The results indicate that the mass flow rate and solid-Gas ratio range 12.6–278.04 kg/h and 0.9–19.56 kg/m3, respectively. With the increase of the pulsed Gas flow rate, the mass flow rate and solid Gas ratio first increase and then decrease. When the ratio of fluidized Gas flow rate to pulsed Gas flow rate is within 0.8–1.2, its conveying capacity reaches the maximum. Meanwhile, the increase in the pulsed interval leads to the decrease of the mass flow rate and solid-Gas ratio. Moreover, the increase in the pulsed width leads to the initial increase and then the stabilization of the mass flow rate and solid Gas ratio. When the pulsed width is 50 ms, the improvement of discharge would small. Conversely, increasing the pulsed width can increase the discharge, and stabilize subsequently until over 200 ms. Besides, moisture content is one of the important factors affecting kaolin powders discharge. When the moisture content is 0.83%, the pulsed Gas does not improve the discharge significantly. Meanwhile, pressure distribution at different locations in the tank is also measured. The results reveal that the introduction of pulsed Gas changes the pressure distribution in the tank. A pressure zone is formed on the upper part of the tank, which promotes the powder discharge.
