Documents disponibles écrits par cet auteur

Byproduct hydrogen network design using pressure swing adsorption and recycling unit for the petrochemical complex / Changhyun Jeong in Industrial & engineering chemistry research, Vol. 50 N° 6 (Mars 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3304-3311 Titre : Byproduct hydrogen network design using pressure swing adsorption and recycling unit for the petrochemical complex Type de document : texte imprimé Auteurs : Changhyun Jeong, Auteur ; Chonghun Han, Auteur Année de publication : 2011 Article en page(s) : pp. 3304-3311 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Petrochemical  industry  Recycling  Pressure  swing  adsorption  Design Résumé : Hydrogen, which has gained attention as the next-generation renewable energy source among byproducts, is a raw material that is commonly produced and consumed in all petrochemical complexes. It is also a primary energy source in energy systems that can considerably reduce air pollution and greenhouse gas emission. Therefore, an explosive demand for hydrogen is expected in the future. A considerable amount of hydrogen is produced as byproducts in industrial complexes such as petrochemical plants and oil refineries within a petrochemical complex; however, this hydrogen is mostly used as fuel internally. If a considerable amount of hydrogen that is used as fuel can be recycled as raw material for an energy source or for other processes, hydrogen can be of a considerably higher value than it is at present. In this research, we have designed a byproduct hydrogen network between a source and a sink within a petrochemical complex. We determined the minimum fresh hydrogen and recovery hydrogen that are needed for forming a material exchange network through hydrogen pinch analysis and finally designed the hydrogen recycling network between the source plant and the sink plant by building a network optimization problem in which the cost and constraints needed to build the network were considered. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944498 [article] Byproduct hydrogen network design using pressure swing adsorption and recycling unit for the petrochemical complex [texte imprimé] / Changhyun Jeong, Auteur ; Chonghun Han, Auteur . - 2011 . - pp. 3304-3311. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 6 (Mars 2011) . - pp. 3304-3311 Mots-clés : Petrochemical  industry  Recycling  Pressure  swing  adsorption  Design Résumé : Hydrogen, which has gained attention as the next-generation renewable energy source among byproducts, is a raw material that is commonly produced and consumed in all petrochemical complexes. It is also a primary energy source in energy systems that can considerably reduce air pollution and greenhouse gas emission. Therefore, an explosive demand for hydrogen is expected in the future. A considerable amount of hydrogen is produced as byproducts in industrial complexes such as petrochemical plants and oil refineries within a petrochemical complex; however, this hydrogen is mostly used as fuel internally. If a considerable amount of hydrogen that is used as fuel can be recycled as raw material for an energy source or for other processes, hydrogen can be of a considerably higher value than it is at present. In this research, we have designed a byproduct hydrogen network between a source and a sink within a petrochemical complex. We determined the minimum fresh hydrogen and recovery hydrogen that are needed for forming a material exchange network through hydrogen pinch analysis and finally designed the hydrogen recycling network between the source plant and the sink plant by building a network optimization problem in which the cost and constraints needed to build the network were considered. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23944498

Hybrid compressor model for optimal operation of compressed dry air system in LCD production industry / Kiwook Song in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4998-5002 Titre : Hybrid compressor model for optimal operation of compressed dry air system in LCD production industry Type de document : texte imprimé Auteurs : Kiwook Song, Auteur ; Changhyun Jeong, Auteur ; Jiyeon Nam, Auteur Année de publication : 2012 Article en page(s) : pp. 4998-5002 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Production  Modeling  Compressor Résumé : Compressed dry air (CDA) is a widely used utility in liquid crystal display (LCD) production industry usually utilized as an air knife and an air curtain for room and glass cleaning to prohibit particles from entering the chamber. CDA is consumed in various sites of the production line and demand for CDA fluctuates largely from moment to moment. Therefore, it is common to supply compressed air with a number of small-capacity compressors rather than few large-capacity ones. To find an optimal operating strategy of such a compressor network, a first hybrid modeling technique of an ideal model and an empirical model is used to predict the efficiency and power consumption of each compressor. Ideal compression work is calculated using thermodynamic equation with slight modification. An artificial neural network is configured to predict the efficiency. Then, actual power consumption of each compressor is given by the ratio of ideal work to efficiency. Then, optimization procedure is applied to search optimal operating configuration. The proposed method is applied to LCD production industry to show good prediction accuracy. Energy saving of total compression work is achieved by optimization scenario of segregating full-load and part-load compressor group. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25777939 [article] Hybrid compressor model for optimal operation of compressed dry air system in LCD production industry [texte imprimé] / Kiwook Song, Auteur ; Changhyun Jeong, Auteur ; Jiyeon Nam, Auteur . - 2012 . - pp. 4998-5002. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4998-5002 Mots-clés : Production  Modeling  Compressor Résumé : Compressed dry air (CDA) is a widely used utility in liquid crystal display (LCD) production industry usually utilized as an air knife and an air curtain for room and glass cleaning to prohibit particles from entering the chamber. CDA is consumed in various sites of the production line and demand for CDA fluctuates largely from moment to moment. Therefore, it is common to supply compressed air with a number of small-capacity compressors rather than few large-capacity ones. To find an optimal operating strategy of such a compressor network, a first hybrid modeling technique of an ideal model and an empirical model is used to predict the efficiency and power consumption of each compressor. Ideal compression work is calculated using thermodynamic equation with slight modification. An artificial neural network is configured to predict the efficiency. Then, actual power consumption of each compressor is given by the ratio of ideal work to efficiency. Then, optimization procedure is applied to search optimal operating configuration. The proposed method is applied to LCD production industry to show good prediction accuracy. Energy saving of total compression work is achieved by optimization scenario of segregating full-load and part-load compressor group. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25777939