The Experts below are selected from a list of 201 Experts worldwide ranked by ideXlab platform
Xiao Feng - One of the best experts on this subject based on the ideXlab platform.
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A unified Graphical Method for integration of hydrogen networks with purification reuse
Chinese Journal of Chemical Engineering, 2016Co-Authors: Minbo Yang, Xiao Feng, Guilian LiuAbstract:Abstract Introducing purifiers into hydrogen network can enhance the recovery and reuse of hydrogen in refineries, further reducing the consumption of fresh hydrogen. Based on previous Graphical Methods, this work proposes a simple and unified Graphical Method for integration of hydrogen networks with purification processes. Scenarios with different hydrogen concentrations of purified product can be analyzed by the unified procedure. As a result, the maximum hydrogen saved by purification reuse can be identified and the corresponding purification process can be optimized. The proposed Method is easy and non-iterative, and it is valid to purification processes with any feed concentration. A conventional hydrogen network is analyzed to test the effectiveness of the proposed Method.
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a novel Graphical Method for the integration of hydrogen distribution systems with purification reuse
Chemical Engineering Science, 2011Co-Authors: Qiao Zhang, Guilian Liu, Xiao Feng, Khim Hoong ChuAbstract:Abstract Increase in refining demand and tighter environmental regulations have led to sharp increases in hydrogen consumption of oil refineries. Hydrogen conservation and effective use are of interest to refineries whose operations and profitability are constrained by hydrogen. Purification is widely used in hydrogen networks of refineries to reduce hydrogen production load. To minimize hydrogen utility consumption, it is necessary to optimize the hydrogen network with purification as a whole. In this paper, for hydrogen purification process, a triangle rule (which can be generalized to polygon rule) is proposed for Graphical representation of its mass balance. The proposed procedure treats the product concentration and recovery rate of the purification process as adjustable parameters. An ensuing Graphical Method is developed for targeting the pinch point and minimum utility consumption of the hydrogen system with purification reuse. This Graphical Method can be used for any purification devices and in systems with any utility concentration. A refinery case is studied to demonstrate the optimization Method.
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new Graphical Method for the integration of hydrogen distribution systems
Industrial & Engineering Chemistry Research, 2006Co-Authors: Zhenhui Zhao, Guilian Liu, Xiao FengAbstract:This paper presents a simple Graphical Method for determining the minimum hydrogen demand. In the pure hydrogen load versus flow rate diagram, the sink and source composite curves are constructed, and they can shift freely in every direction. Through moving the hydrogen source composite curve to the position at which the two composite curves intersect at only two points, the hydrogen pinch point of the system is identified. Furthermore, the minimum utility consumption can be determined from the diagram. This Method is simple, efficient, and easy to understand. It can be used in hydrogen systems with any utility concentration.
Guilian Liu - One of the best experts on this subject based on the ideXlab platform.
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A unified Graphical Method for integration of hydrogen networks with purification reuse
Chinese Journal of Chemical Engineering, 2016Co-Authors: Minbo Yang, Xiao Feng, Guilian LiuAbstract:Abstract Introducing purifiers into hydrogen network can enhance the recovery and reuse of hydrogen in refineries, further reducing the consumption of fresh hydrogen. Based on previous Graphical Methods, this work proposes a simple and unified Graphical Method for integration of hydrogen networks with purification processes. Scenarios with different hydrogen concentrations of purified product can be analyzed by the unified procedure. As a result, the maximum hydrogen saved by purification reuse can be identified and the corresponding purification process can be optimized. The proposed Method is easy and non-iterative, and it is valid to purification processes with any feed concentration. A conventional hydrogen network is analyzed to test the effectiveness of the proposed Method.
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a novel Graphical Method for the integration of hydrogen distribution systems with purification reuse
Chemical Engineering Science, 2011Co-Authors: Qiao Zhang, Guilian Liu, Xiao Feng, Khim Hoong ChuAbstract:Abstract Increase in refining demand and tighter environmental regulations have led to sharp increases in hydrogen consumption of oil refineries. Hydrogen conservation and effective use are of interest to refineries whose operations and profitability are constrained by hydrogen. Purification is widely used in hydrogen networks of refineries to reduce hydrogen production load. To minimize hydrogen utility consumption, it is necessary to optimize the hydrogen network with purification as a whole. In this paper, for hydrogen purification process, a triangle rule (which can be generalized to polygon rule) is proposed for Graphical representation of its mass balance. The proposed procedure treats the product concentration and recovery rate of the purification process as adjustable parameters. An ensuing Graphical Method is developed for targeting the pinch point and minimum utility consumption of the hydrogen system with purification reuse. This Graphical Method can be used for any purification devices and in systems with any utility concentration. A refinery case is studied to demonstrate the optimization Method.
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new Graphical Method for the integration of hydrogen distribution systems
Industrial & Engineering Chemistry Research, 2006Co-Authors: Zhenhui Zhao, Guilian Liu, Xiao FengAbstract:This paper presents a simple Graphical Method for determining the minimum hydrogen demand. In the pure hydrogen load versus flow rate diagram, the sink and source composite curves are constructed, and they can shift freely in every direction. Through moving the hydrogen source composite curve to the position at which the two composite curves intersect at only two points, the hydrogen pinch point of the system is identified. Furthermore, the minimum utility consumption can be determined from the diagram. This Method is simple, efficient, and easy to understand. It can be used in hydrogen systems with any utility concentration.
Khim Hoong Chu - One of the best experts on this subject based on the ideXlab platform.
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a novel Graphical Method for the integration of hydrogen distribution systems with purification reuse
Chemical Engineering Science, 2011Co-Authors: Qiao Zhang, Guilian Liu, Xiao Feng, Khim Hoong ChuAbstract:Abstract Increase in refining demand and tighter environmental regulations have led to sharp increases in hydrogen consumption of oil refineries. Hydrogen conservation and effective use are of interest to refineries whose operations and profitability are constrained by hydrogen. Purification is widely used in hydrogen networks of refineries to reduce hydrogen production load. To minimize hydrogen utility consumption, it is necessary to optimize the hydrogen network with purification as a whole. In this paper, for hydrogen purification process, a triangle rule (which can be generalized to polygon rule) is proposed for Graphical representation of its mass balance. The proposed procedure treats the product concentration and recovery rate of the purification process as adjustable parameters. An ensuing Graphical Method is developed for targeting the pinch point and minimum utility consumption of the hydrogen system with purification reuse. This Graphical Method can be used for any purification devices and in systems with any utility concentration. A refinery case is studied to demonstrate the optimization Method.
A. Yamamoto - One of the best experts on this subject based on the ideXlab platform.
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A simplified Graphical Method for deriving system steady-state probability
IEEE Transactions on Reliability, 1993Co-Authors: Ikuo Arizono, A. YamamotoAbstract:A simplified Graphical Method for deriving the formula for steady-state probability distributions of a large system based on graph theory is introduced. The steady-state probability distributions for some D-out-of-N:F repairable systems are derived using this Graphical Method. >
Qiao Zhang - One of the best experts on this subject based on the ideXlab platform.
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a novel Graphical Method for the integration of hydrogen distribution systems with purification reuse
Chemical Engineering Science, 2011Co-Authors: Qiao Zhang, Guilian Liu, Xiao Feng, Khim Hoong ChuAbstract:Abstract Increase in refining demand and tighter environmental regulations have led to sharp increases in hydrogen consumption of oil refineries. Hydrogen conservation and effective use are of interest to refineries whose operations and profitability are constrained by hydrogen. Purification is widely used in hydrogen networks of refineries to reduce hydrogen production load. To minimize hydrogen utility consumption, it is necessary to optimize the hydrogen network with purification as a whole. In this paper, for hydrogen purification process, a triangle rule (which can be generalized to polygon rule) is proposed for Graphical representation of its mass balance. The proposed procedure treats the product concentration and recovery rate of the purification process as adjustable parameters. An ensuing Graphical Method is developed for targeting the pinch point and minimum utility consumption of the hydrogen system with purification reuse. This Graphical Method can be used for any purification devices and in systems with any utility concentration. A refinery case is studied to demonstrate the optimization Method.
