The Experts below are selected from a list of 285 Experts worldwide ranked by ideXlab platform
Chaowei Liu - One of the best experts on this subject based on the ideXlab platform.
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Cyclic Scheduling for Ethylene Cracking Furnace System with Consideration of Secondary Ethane Cracking
Industrial & Engineering Chemistry Research, 2010Co-Authors: Chuanyu Zhao, Chaowei LiuAbstract:Cracking Furnaces of ethylene plants are capable of processing multiple feeds to produce smaller hydrocarbon molecules, such as ethylene, propylene, and ethane. The best practice for handling the produced ethane is to recycle it as an internal feed and conduct the secondary cracking in a specific Furnace. As cracking Furnaces have to be periodically shut down for decoking, when multiple Furnaces processing different feeds under various product values and manufacturing costs are considered, the operational scheduling for the entire Furnace system should be optimized to achieve the best economic performance. In this paper, a new MINLP (mixed-integer nonlinear programming) model has been developed to optimize the operation of cracking Furnace systems with the consideration of secondary ethane cracking. This model is more practical than the previous study and can simultaneously identify the allocation of feeds with their quantity, time, and sequence information for each cracking Furnace. A case study has demo...
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cyclic scheduling for best profitability of industrial cracking Furnace system
Computers & Chemical Engineering, 2010Co-Authors: Chaowei Liu, Jia ZhangAbstract:An ethylene plant employs multiple cracking Furnaces in parallel to convert various hydrocarbon feedstocks to smaller hydrocarbon molecules, mostly ethylene and propylene. The continuous operational performance of cracking Furnaces gradually decays because of coke formation in the reaction coils, which requires each Furnace to be periodically shut down for decoking. Given multiple feeds and different cracking Furnaces as well as various product prices and manufacturing costs, the operational scheduling for the entire Furnace system should be optimized to achieve the best economic performance. In this paper, a new MINLP (mixed-integer nonlinear programming) model has been developed to obtain cyclic scheduling strategies for cracking Furnace systems. Compared to previous studies, the new model has more capabilities to address operation profitability of multiple feeds cracked in multiple Furnaces. Meanwhile, it inherently avoids unpractical conditions such as simultaneous shutdown of multiple Furnaces. Case studies demonstrate the efficacy of the developed methodology.
Cisdi Industrial - One of the best experts on this subject based on the ideXlab platform.
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CAE simulation on bell-type annealing Furnace with high performance hydrogen
Computer-Aided Engineering, 2011Co-Authors: De Jun, Cisdi IndustrialAbstract:As to the development and process optimization of bell-type annealing Furnaces with high performance hydrogen,the heating process is simulated and calculated by Computational Fluid Dynamics(CFD) method.The CAE simulation model is established according to the heating mechanism of bell-type annealing Furnaces with high performance hydrogen and its flow field and temperature field are simulated;the turbulent fluctuation in the 3D turbulence flow process of Furnace is calculated by standard k-e model;the chemical reaction in the Furnace is simulated by the component transport and chemical reaction model of FLUENT,and the interaction of turbulent chemical reaction is based on Eddy Dissipation(ED) model.The CAE simulation model is applied to a bell-type annealing Furnace with high performance hydrogen of a steel plant,the heating characteristic curve of steel roll is obtained,the curve is in good accordance with theoretical annealing curve,so the CAE simulation model is validated.
Jia Zhang - One of the best experts on this subject based on the ideXlab platform.
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cyclic scheduling for best profitability of industrial cracking Furnace system
Computers & Chemical Engineering, 2010Co-Authors: Chaowei Liu, Jia ZhangAbstract:An ethylene plant employs multiple cracking Furnaces in parallel to convert various hydrocarbon feedstocks to smaller hydrocarbon molecules, mostly ethylene and propylene. The continuous operational performance of cracking Furnaces gradually decays because of coke formation in the reaction coils, which requires each Furnace to be periodically shut down for decoking. Given multiple feeds and different cracking Furnaces as well as various product prices and manufacturing costs, the operational scheduling for the entire Furnace system should be optimized to achieve the best economic performance. In this paper, a new MINLP (mixed-integer nonlinear programming) model has been developed to obtain cyclic scheduling strategies for cracking Furnace systems. Compared to previous studies, the new model has more capabilities to address operation profitability of multiple feeds cracked in multiple Furnaces. Meanwhile, it inherently avoids unpractical conditions such as simultaneous shutdown of multiple Furnaces. Case studies demonstrate the efficacy of the developed methodology.
De Jun - One of the best experts on this subject based on the ideXlab platform.
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CAE simulation on bell-type annealing Furnace with high performance hydrogen
Computer-Aided Engineering, 2011Co-Authors: De Jun, Cisdi IndustrialAbstract:As to the development and process optimization of bell-type annealing Furnaces with high performance hydrogen,the heating process is simulated and calculated by Computational Fluid Dynamics(CFD) method.The CAE simulation model is established according to the heating mechanism of bell-type annealing Furnaces with high performance hydrogen and its flow field and temperature field are simulated;the turbulent fluctuation in the 3D turbulence flow process of Furnace is calculated by standard k-e model;the chemical reaction in the Furnace is simulated by the component transport and chemical reaction model of FLUENT,and the interaction of turbulent chemical reaction is based on Eddy Dissipation(ED) model.The CAE simulation model is applied to a bell-type annealing Furnace with high performance hydrogen of a steel plant,the heating characteristic curve of steel roll is obtained,the curve is in good accordance with theoretical annealing curve,so the CAE simulation model is validated.
Zhenlei Wang - One of the best experts on this subject based on the ideXlab platform.
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Cyclic scheduling for an ethylene cracking Furnace system using diversity learning teaching-learning-based optimization
Computers & Chemical Engineering, 2017Co-Authors: Lyndon While, Mark Reynolds, Xin Wang, Zhenlei WangAbstract:Abstract The ethylene cracking Furnace system is central to an olefin plant. Multiple cracking Furnaces are employed for processing different hydrocarbon feeds to produce various smaller hydrocarbon molecules, such as ethylene, propylene, and butadiene. We develop a new cyclic scheduling model for a cracking Furnace system, with consideration of different feeds, multiple cracking Furnaces, differing product prices, decoking costs, and other more practical constraints. To obtain an efficient scheduling strategy and the optimal operational conditions for the best economic performance of the cracking Furnace system, a diversity learning teaching-learning-based optimization (DLTLBO) algorithm is used to simultaneously determine the optimal assignment of multiple feeds to different Furnaces, the batch processing time and sequence, and the optimal operational conditions for each batch. The performance of the proposed scheduling model and the DLTLBO algorithm is illustrated through a case study from a real-world ethylene plant: experiments show that the new algorithm out-performs both previous studies of this set-up, and the basic TLBO algorithm.
