The Experts below are selected from a list of 13776 Experts worldwide ranked by ideXlab platform
Shu-san Hsiau - One of the best experts on this subject based on the ideXlab platform.
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clean coal technology on hot gas clean up process with a moving Granular Bed filter
Fuel, 2019Co-Authors: Yishun Chen, Shu-san Hsiau, Jhanruei Syu, Yilun ChangAbstract:Abstract This study presents a filtration technology, aiming to increase the efficiency of industry environment under different integrations and acquire the optimum solution. The goal of this study is to evaluate the performance of a moving Granular Bed filter designed to filter out coal fly ash. A series of experiments were performed at room temperature to demonstrate the flow patterns of the moving Granular Bed filter under different operational parameters. The collection efficiency and the pressure drop were investigated under different filtration superficial velocities, mass flow rates of filter granules, and filter granules, but with a fixed inlet dust concentration. The results showed that, using a filtration superficial velocity of 20 cm/s and a mass flow rate of filter granules of 460 g/min, the outlet dust weight decreased and the amount of dust particulates deposited in the filter Bed increased. Furthermore, the test results from this filtration method can be applied in different industrial applications with high-temperature environments.
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clean coal technology for removal dust using moving Granular Bed filter
Energy, 2017Co-Authors: Yishun Chen, Chiajen Hsu, Shu-san HsiauAbstract:Abstract An international joint research project into advanced hot gas cleaning in high-efficiency coal and solid waste power generation processes using a Granular Bed filter has been developed. The goal of this study is to evaluate the filtration performance of a moving Granular Bed with baffle designs. A series of experiments are performed at room temperature to demonstrate the flow patterns of filtration technology (i.e., the moving Granular Bed filter) under different operational parameters. Pressure drops and collection efficiency are measured as performance indices and analyzed through a series tests. The important parameters taken into consideration include the mass flow rates of filter granules and filtration superficial velocities. The experimental results show that the best collection efficiency is 99.87%, which is obtained using a baffle, a mass flow rate of the filter media of 600 g/min, and a filtration superficial velocity of 40 cm/s. Furthermore, the test results from this new method can be applied to moving Granular Bed filters or other filtration systems for a high-temperature environment of industry.
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removal of dust particles from fuel gas using a moving Granular Bed filter
Fuel, 2016Co-Authors: Yishun Chen, Shu-san Hsiau, J SmidAbstract:Abstract The goal of this study is to evaluate the performance of a moving Granular Bed filter designed to filter out dust particles. We investigate the flow patterns of the filter granules, and the filtration efficiency under different inlet dust concentrations, but with a fixed filtration superficial velocity and mass flow rate of filter granules. All filtration system experiments were performed at room temperature. A vertical shift of louvers on the inlet or outlet wall of the filter could be an appropriate solution to diminish the stagnant zones. The results of a study of the flow patterns and velocity fields of filter granules in a 2-D cross-flow moving Granular Bed system with vertically shifting louvers is presented. In addition, the results of cold tests show that using a higher dust concentration of 15,000 ppmw and a fixed-Bed mode, the overall porosity of the filter granules decreased and the filter resistance and the filtration efficiency increased, with an increase in the amount of smaller-sized filter granules in a 3-D Bed.
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a study of filtration performance in a cross flow moving Granular Bed filter the influence of gas flow uniformity
Powder Technology, 2015Co-Authors: Chiajen Hsu, Shu-san HsiauAbstract:Abstract The cross-flow moving Granular Bed filter where the dust-laden gas passes horizontally through the Granular layer and filter granules moves downwards and is removed at the bottom of the Bed. It has the advantages of high filtration efficiency and lower pressure drop. The uniformity of gas flow is important for achieving a uniform gas distribution and higher usage rate of the filter media in a cross-flow moving Granular Bed filter. The behaviors related to the uniformity of the gas flow have been studied in previous experiments. The goal of this study is to evaluate the relationships between a uniform gas flow and filtration performance in a moving Granular Bed. Filtration performance experiments were carried out at room temperature to understand the relationship between gas flow behavior and filtration performance. The performance index such as the pressure drop in the Granular Bed and filtration surfaces, and filtration efficiency are measured and analyzed. The different baffle geometries are taken into consideration including baffle length and angle of the gas inlet of the moving Granular Bed filter. The results indicate that a better filtration efficiency of up to 98.55% can be obtained by using a baffle length of 170 mm, and a baffle angle of 50°. The experimental results show that the filtration efficiency is enhanced when the gas flow becomes more uniform in the gas inlet. The experimental results of filtration performance give important information that will be helpful for designing better models of moving Granular Bed filters in the future such as for the Integrated Gasification Combined Cycle (IGCC) system.
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investigation of the gas inlet velocity distribution in a fixed Granular Bed filter
Advanced Powder Technology, 2010Co-Authors: Chiajen Hsu, Yishun Chen, Shu-san Hsiau, J SmidAbstract:Abstract Granular Bed filter (GBF) technology can be applied for high-temperature gas cleanup in integrated gasification combined-cycle (IGCC) and pressurized fluidized-Bed combustion (PFBC) advanced coal-fired power plants. The design of the gas inlet component of the Granular Bed filter is important to achieve a uniform gas distribution and higher usage rate of the filter media. Previous studies show that the gas velocity at the inlet is not uniformly distributed. This non-uniformity may lead to a lower usage rate of the filter media. In this study a baffle device is introduced to the inlet system in order to achieve a more uniform gas velocity distribution. A more uniform gas inlet distribution can be obtained by adjustment of the lengths and angles of the baffles. The gas velocities along the inlet and filtration surfaces are measured using a pitot tube. The uniformity of the gas velocity distribution can be characterized by looking at the distributions of the standard deviation of the gas velocity and the differences in the mean velocities between the two filtration surfaces.
Yishun Chen - One of the best experts on this subject based on the ideXlab platform.
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clean coal technology on hot gas clean up process with a moving Granular Bed filter
Fuel, 2019Co-Authors: Yishun Chen, Shu-san Hsiau, Jhanruei Syu, Yilun ChangAbstract:Abstract This study presents a filtration technology, aiming to increase the efficiency of industry environment under different integrations and acquire the optimum solution. The goal of this study is to evaluate the performance of a moving Granular Bed filter designed to filter out coal fly ash. A series of experiments were performed at room temperature to demonstrate the flow patterns of the moving Granular Bed filter under different operational parameters. The collection efficiency and the pressure drop were investigated under different filtration superficial velocities, mass flow rates of filter granules, and filter granules, but with a fixed inlet dust concentration. The results showed that, using a filtration superficial velocity of 20 cm/s and a mass flow rate of filter granules of 460 g/min, the outlet dust weight decreased and the amount of dust particulates deposited in the filter Bed increased. Furthermore, the test results from this filtration method can be applied in different industrial applications with high-temperature environments.
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influence of operational parameters on the performance of gas clean up technology with a moving Granular Bed filter
Energy, 2017Co-Authors: Yishun Chen, Chiajen Hsu, Yilun ChangAbstract:Abstract This paper describes new design and test procedures of an inlet gas system that is part of a moving Granular Bed filter. A series of experiments is conducted to demonstrate the collection efficiency of this method under different operating conditions. In addition, the dynamic model and the flow analysis of gas in the inlet gas system and filter Bed are discussed. Several parameters are considered, including uniform flow of gas, geometry of inlet gas system, and position of flow-corrective insert in filter Bed, to understand the performance of the new filter system. The filtration superficial velocity, mass flow rate of filter granules, and baffle length and baffle angle of inlet gas system are controlled during the test process. The pressure drop, collection efficiency, flow velocity profile of gas, and size distribution of dust particulates are measured simultaneously. The trend in uniform gas flow behaviors can be useful for application in different cross-flow filter systems for gas clean-up. The results of this study are expected to serve as a basis for future research.
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clean coal technology for removal dust using moving Granular Bed filter
Energy, 2017Co-Authors: Yishun Chen, Chiajen Hsu, Shu-san HsiauAbstract:Abstract An international joint research project into advanced hot gas cleaning in high-efficiency coal and solid waste power generation processes using a Granular Bed filter has been developed. The goal of this study is to evaluate the filtration performance of a moving Granular Bed with baffle designs. A series of experiments are performed at room temperature to demonstrate the flow patterns of filtration technology (i.e., the moving Granular Bed filter) under different operational parameters. Pressure drops and collection efficiency are measured as performance indices and analyzed through a series tests. The important parameters taken into consideration include the mass flow rates of filter granules and filtration superficial velocities. The experimental results show that the best collection efficiency is 99.87%, which is obtained using a baffle, a mass flow rate of the filter media of 600 g/min, and a filtration superficial velocity of 40 cm/s. Furthermore, the test results from this new method can be applied to moving Granular Bed filters or other filtration systems for a high-temperature environment of industry.
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removal of dust particles from fuel gas using a moving Granular Bed filter
Fuel, 2016Co-Authors: Yishun Chen, Shu-san Hsiau, J SmidAbstract:Abstract The goal of this study is to evaluate the performance of a moving Granular Bed filter designed to filter out dust particles. We investigate the flow patterns of the filter granules, and the filtration efficiency under different inlet dust concentrations, but with a fixed filtration superficial velocity and mass flow rate of filter granules. All filtration system experiments were performed at room temperature. A vertical shift of louvers on the inlet or outlet wall of the filter could be an appropriate solution to diminish the stagnant zones. The results of a study of the flow patterns and velocity fields of filter granules in a 2-D cross-flow moving Granular Bed system with vertically shifting louvers is presented. In addition, the results of cold tests show that using a higher dust concentration of 15,000 ppmw and a fixed-Bed mode, the overall porosity of the filter granules decreased and the filter resistance and the filtration efficiency increased, with an increase in the amount of smaller-sized filter granules in a 3-D Bed.
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hot gas clean up technology of dust particulates with a moving Granular Bed filter
Applied Thermal Engineering, 2015Co-Authors: Yishun Chen, Yaupin ChyouAbstract:Abstract The purpose of this study is to investigate the efficiency and stability of moving Granular Bed filter (MGBF) in high-temperature environment with various operation conditions. Experiments were carried out to study the influence of various parameters, such as test temperature, mass flow rate of filter granules and filtration superficial velocity. The experimental facilities include an air fan, flow ducts, heaters of gas and filter granules, a screw feeder of dust particulates, a measurement system for size distribution of dust particulates, a filter granules supply device, a rotary valve, and a Granular Bed filter filled with filter granules. The results of this study indicate that this type of method can be useful to applications in different cross-flow filter systems for gas clean-up. From the results, with the conditions of filtration superficial velocities at 0.2 and 0.35 m/s, and the mass flow rate of filter granules at 0.01 kg/s, the better collection efficiency and the smaller-sized distribution of dust particulates were obtained for the case with operating temperature of 20 °C. The experimental results show that an average increase in operation temperature of 100 °C resulted in a decrease in average collection efficiency of 1.74%. The focus in the current study is essentially the development of an MGBF that can be applied in the industrial environment. The results are expected to serve as the basis for future research.
Chiajen Hsu - One of the best experts on this subject based on the ideXlab platform.
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influence of operational parameters on the performance of gas clean up technology with a moving Granular Bed filter
Energy, 2017Co-Authors: Yishun Chen, Chiajen Hsu, Yilun ChangAbstract:Abstract This paper describes new design and test procedures of an inlet gas system that is part of a moving Granular Bed filter. A series of experiments is conducted to demonstrate the collection efficiency of this method under different operating conditions. In addition, the dynamic model and the flow analysis of gas in the inlet gas system and filter Bed are discussed. Several parameters are considered, including uniform flow of gas, geometry of inlet gas system, and position of flow-corrective insert in filter Bed, to understand the performance of the new filter system. The filtration superficial velocity, mass flow rate of filter granules, and baffle length and baffle angle of inlet gas system are controlled during the test process. The pressure drop, collection efficiency, flow velocity profile of gas, and size distribution of dust particulates are measured simultaneously. The trend in uniform gas flow behaviors can be useful for application in different cross-flow filter systems for gas clean-up. The results of this study are expected to serve as a basis for future research.
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clean coal technology for removal dust using moving Granular Bed filter
Energy, 2017Co-Authors: Yishun Chen, Chiajen Hsu, Shu-san HsiauAbstract:Abstract An international joint research project into advanced hot gas cleaning in high-efficiency coal and solid waste power generation processes using a Granular Bed filter has been developed. The goal of this study is to evaluate the filtration performance of a moving Granular Bed with baffle designs. A series of experiments are performed at room temperature to demonstrate the flow patterns of filtration technology (i.e., the moving Granular Bed filter) under different operational parameters. Pressure drops and collection efficiency are measured as performance indices and analyzed through a series tests. The important parameters taken into consideration include the mass flow rates of filter granules and filtration superficial velocities. The experimental results show that the best collection efficiency is 99.87%, which is obtained using a baffle, a mass flow rate of the filter media of 600 g/min, and a filtration superficial velocity of 40 cm/s. Furthermore, the test results from this new method can be applied to moving Granular Bed filters or other filtration systems for a high-temperature environment of industry.
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a study of filtration performance in a cross flow moving Granular Bed filter the influence of gas flow uniformity
Powder Technology, 2015Co-Authors: Chiajen Hsu, Shu-san HsiauAbstract:Abstract The cross-flow moving Granular Bed filter where the dust-laden gas passes horizontally through the Granular layer and filter granules moves downwards and is removed at the bottom of the Bed. It has the advantages of high filtration efficiency and lower pressure drop. The uniformity of gas flow is important for achieving a uniform gas distribution and higher usage rate of the filter media in a cross-flow moving Granular Bed filter. The behaviors related to the uniformity of the gas flow have been studied in previous experiments. The goal of this study is to evaluate the relationships between a uniform gas flow and filtration performance in a moving Granular Bed. Filtration performance experiments were carried out at room temperature to understand the relationship between gas flow behavior and filtration performance. The performance index such as the pressure drop in the Granular Bed and filtration surfaces, and filtration efficiency are measured and analyzed. The different baffle geometries are taken into consideration including baffle length and angle of the gas inlet of the moving Granular Bed filter. The results indicate that a better filtration efficiency of up to 98.55% can be obtained by using a baffle length of 170 mm, and a baffle angle of 50°. The experimental results show that the filtration efficiency is enhanced when the gas flow becomes more uniform in the gas inlet. The experimental results of filtration performance give important information that will be helpful for designing better models of moving Granular Bed filters in the future such as for the Integrated Gasification Combined Cycle (IGCC) system.
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investigation of the gas inlet velocity distribution in a fixed Granular Bed filter
Advanced Powder Technology, 2010Co-Authors: Chiajen Hsu, Yishun Chen, Shu-san Hsiau, J SmidAbstract:Abstract Granular Bed filter (GBF) technology can be applied for high-temperature gas cleanup in integrated gasification combined-cycle (IGCC) and pressurized fluidized-Bed combustion (PFBC) advanced coal-fired power plants. The design of the gas inlet component of the Granular Bed filter is important to achieve a uniform gas distribution and higher usage rate of the filter media. Previous studies show that the gas velocity at the inlet is not uniformly distributed. This non-uniformity may lead to a lower usage rate of the filter media. In this study a baffle device is introduced to the inlet system in order to achieve a more uniform gas velocity distribution. A more uniform gas inlet distribution can be obtained by adjustment of the lengths and angles of the baffles. The gas velocities along the inlet and filtration surfaces are measured using a pitot tube. The uniformity of the gas velocity distribution can be characterized by looking at the distributions of the standard deviation of the gas velocity and the differences in the mean velocities between the two filtration surfaces.
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filtration of dust particulates with a moving Granular Bed filter
Journal of Hazardous Materials, 2009Co-Authors: Yishun Chen, Shu-san Hsiau, Sinchang Lai, Yaupin Chyou, Chiajen HsuAbstract:Abstract The goal of this study was to evaluate the performance of a moving Granular Bed filter designed for cold test to filter coal particulates. A series of experiments were carried out at room temperature to demonstrate the collection efficiency of this method of filtration technology (i.e., the moving Granular Bed filter) at different filtration superficial velocities and mass flow rates of filter granules but with a fixed inlet dust concentration. The dynamic characteristics of the filter system were evaluated by measuring variations in the outlet concentration and size distribution of dust particulates. The collection mechanisms of the filter granules in the moving Granular Bed filter were also studied. Experimental results showed that the collection efficiency could be enhanced by using a filtration superficial velocity of 30 cm/s and mass flow rate of 450 g/min. The results of this study indicate this type of method could be useful for application in different cross-flow filter systems for gas cleanup. The focus in the current study is essentially the development of a moving Granular Bed filter that could be applied in a high-temperature environment. The results are expected to serve as the basis for future research.
J Smid - One of the best experts on this subject based on the ideXlab platform.
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removal of dust particles from fuel gas using a moving Granular Bed filter
Fuel, 2016Co-Authors: Yishun Chen, Shu-san Hsiau, J SmidAbstract:Abstract The goal of this study is to evaluate the performance of a moving Granular Bed filter designed to filter out dust particles. We investigate the flow patterns of the filter granules, and the filtration efficiency under different inlet dust concentrations, but with a fixed filtration superficial velocity and mass flow rate of filter granules. All filtration system experiments were performed at room temperature. A vertical shift of louvers on the inlet or outlet wall of the filter could be an appropriate solution to diminish the stagnant zones. The results of a study of the flow patterns and velocity fields of filter granules in a 2-D cross-flow moving Granular Bed system with vertically shifting louvers is presented. In addition, the results of cold tests show that using a higher dust concentration of 15,000 ppmw and a fixed-Bed mode, the overall porosity of the filter granules decreased and the filter resistance and the filtration efficiency increased, with an increase in the amount of smaller-sized filter granules in a 3-D Bed.
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investigation of the gas inlet velocity distribution in a fixed Granular Bed filter
Advanced Powder Technology, 2010Co-Authors: Chiajen Hsu, Yishun Chen, Shu-san Hsiau, J SmidAbstract:Abstract Granular Bed filter (GBF) technology can be applied for high-temperature gas cleanup in integrated gasification combined-cycle (IGCC) and pressurized fluidized-Bed combustion (PFBC) advanced coal-fired power plants. The design of the gas inlet component of the Granular Bed filter is important to achieve a uniform gas distribution and higher usage rate of the filter media. Previous studies show that the gas velocity at the inlet is not uniformly distributed. This non-uniformity may lead to a lower usage rate of the filter media. In this study a baffle device is introduced to the inlet system in order to achieve a more uniform gas velocity distribution. A more uniform gas inlet distribution can be obtained by adjustment of the lengths and angles of the baffles. The gas velocities along the inlet and filtration surfaces are measured using a pitot tube. The uniformity of the gas velocity distribution can be characterized by looking at the distributions of the standard deviation of the gas velocity and the differences in the mean velocities between the two filtration surfaces.
Tamer Coskun - One of the best experts on this subject based on the ideXlab platform.
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use of the static Granular Bed reactor sgbr with anaerobic sludge to treat poultry slaughterhouse wastewater and kinetic modeling
Bioresource Technology, 2009Co-Authors: Eyup Debik, Tamer CoskunAbstract:Abstract Poultry slaughterhouses discharge very high amount of wastewaters and these wastewaters can be treated successfully at a very low cost using anaerobic treatment. In this study, the Static Granular Bed Reactor (SGBR), a newly developed anaerobic process which is fully anaerobic granule, and another Static Granular Bed Reactor containing both anaerobic Granular biomass and non-Granular biomass were employed for the treatment of poultry slaughterhouse wastewater. The objective of the use of two reactors having different types of anaerobic biomass is to evaluate whether anaerobic sludge could be used effectively instead of anaerobic granule, which is much more difficult to obtain than the other during the start up period. Average COD removal efficiencies were greater than 95% for both of the reactors. Furthermore, Grau second-order and modified Stover–Kincannon models were successfully used to develop a kinetic model of the experimental data with a high correlation coefficient ( R 2 > 0.95).
