Enhancing a smelter off-gas system using a plant-wide control design / Antonio C. B. De Araujo in Industrial & engineering chemistry research, Vol. 48 N° 6 (Mars 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - pp. 3004–3013 Titre : Enhancing a smelter off-gas system using a plant-wide control design Type de document : texte imprimé Auteurs : Antonio C. B. De Araujo, Auteur ; Helen Shang, Auteur Année de publication : 2009 Article en page(s) : pp. 3004–3013 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Off-gas treatment system Smelter roaster processes Systematic control design Steady-state analysis Résumé : An off-gas treatment system is a vital component of smelter roaster processes as it ensures operation is in accordance with environmental regulations in terms of hazardous emissions. It is, therefore, paramount that a well-designed control structure be incorporated into the system. Analysis of the off-gas treatment processes for a roaster using a systematic control design procedure to provide the necessary verification to current industrial practices for controlling these processes was carried out. We approached this by conducting a top-down (steady-state) analysis based on an available nonlinear model of the process. The results provide insight into, and potential improvement of, the control of the off-gas system. Through designing the bottom-up structure, a feedback control structure was developed to give robust and effective control in terms of disturbance rejection capabilities. The proposed control structure provides for improved performance in an easy form to implement. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800254s [article] Enhancing a smelter off-gas system using a plant-wide control design [texte imprimé] / Antonio C. B. De Araujo, Auteur ; Helen Shang, Auteur . - 2009 . - pp. 3004–3013. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - pp. 3004–3013 Mots-clés : Off-gas treatment system Smelter roaster processes Systematic control design Steady-state analysis Résumé : An off-gas treatment system is a vital component of smelter roaster processes as it ensures operation is in accordance with environmental regulations in terms of hazardous emissions. It is, therefore, paramount that a well-designed control structure be incorporated into the system. Analysis of the off-gas treatment processes for a roaster using a systematic control design procedure to provide the necessary verification to current industrial practices for controlling these processes was carried out. We approached this by conducting a top-down (steady-state) analysis based on an available nonlinear model of the process. The results provide insight into, and potential improvement of, the control of the off-gas system. Through designing the bottom-up structure, a feedback control structure was developed to give robust and effective control in terms of disturbance rejection capabilities. The proposed control structure provides for improved performance in an easy form to implement. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800254s

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