Supplementary Files
Keywords
Energy
Optimization
Distillation
Network
Heat Exchangers
How to Cite
Abstract
To increase the efficiency of industrial processes, mainly in petroleum refineries, the strategies to energy optimization are being developed. Thus, there is a need to know the energy consumption analysis in term of loss level and to define the procedure to recovery that. The analyses involve the flow rate study, based on energy balances that define the best strategy to use the energy, with the installation of heat exchanger networks. With the use of this procedure, we can reduce the operational costs, associated with a reduction of the level energy consumption. The study developed here was related to refinery atmospheric distillation column, using pinch technology, based on energy conservation law. The pre-flash, atmospheric distillation column and heat exchangers networks were evaluated in this study. The dates used in this study were collected from Angolan refinery, during 30 days and the results were used to mass and energy balances. Previously, the flow sheet process and established the relations between the operational parameters in industrial equipment were evaluated. The results from energy balances were used to integration study, supported by the pinch analysis using spreadsheet software, and the dates showed as composite, great composite and cascade curves. For this, were used the heat exchanger battery based on pinch analysis, to make the new networks of energy integration. After the assessment of each network with 4 to 12 heat exchangers, it was optimized to know that one with better energy consumption. The new network proposed is evaluated in term of reduction of energy consumption, minor number of heat exchangers and networks optimization. As a result of this methodology, we can see the reduction of energy consumption of 785,4 KW (utility) and 1277,1 KW (cold), respectively. On other hand, the optimization strategy adopted here allowed increase the temperature to 301ºC.
References
Neto, João Nery S. Metodologia para Aplicação de Integração Energética numa Planta Industrial. Dissertação de Mestrado. Universidade Federal da Bahia. Salvador-Bahia, Brasil. (2005).
Rodrigues, João V. F. Integração energética dos processos de stripping e de secagem de uma unidade de produção de PVC em suspensão. Dissertação de Mestrado. Universidade de Coimbra, Portugal. (2012).
Amaral, Thiago Paulo Integração Energética de Unidades de Destilação E Coqueamento: Estudo de Retrofit de Aspectos de Processo. Dissertação de Mestrado. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brasil. (2013).
Linnhoff, B. and Withrell, W. D. Pinch Technology Guides Retrofit. Oil & Gas Journal. United States of America. (1986).
Guelfi, LLuciano R. and Queiroz, Eduardo Mach and Pessoa, Fernando; Retrofit de uma Unidade de FCC. Anais do Congresso Brasileiro de Engenharia Química. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brasil. (2016).
Liporace, Fábio S. Síntese de Redes de Trocadores de Calor: Proposta de um Procedimento Automático e Estudo da Influência de Misturas que Mudam de Fase. Tese de Doutoramento. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brasil. (2000).
Liporace, Fábio S. Síntese de Redes De Trocadore de Calor Afastadas do Ponto de Estrangulamento Energético. Dissertação de Mestrado. Universidade Federal do Rio de Janeiro. Rio de Janeiro, Brasil. (1996).
Floudas, C. A.; Ciric, A. R. and Grossmann, I. E.; Automatic Synthesis of Optimum Heat Exchanger Network Configurations. Aiche Journal, Vol. 32. United Stat of America. (1986).
Stinghen, Amilcar O. Estratégias de otimização de processos. Tese de Doutoramento. Universidade Estadual de Campinas. São Paulo, Brasil. (1998).
Liporace, Fábio S.; Pessoa, Fernando L. P. and Queiroz, Eduardo M.; An Alternative Procedure to Retrofit an Industrial Plant: A Case Study. Latin American Applied Research Journal, Vol. 32. America Latina. (2002).
Asante, Nii Darko K. and ZHU, Xinxiong X. An Automated Approach for Heat Exchanger Network Retrofit Featuring Minimal Topology Modifications. Computer & Chemical Engineering, Vol. 20. (1996).
Fonseca, S.; Baxter, I. and Hall, S. G.; Refinery Energy And Yield Improvements Using Pinch Technology. Oil & Gas Journal, Vol. 77. (1997).
CASTRO, Antonio V. S.; Kuboski, Claudio L. M.; Oliveira, Roberto A.; Geraldelli, Washington and Danilo H. Biazi; Cdu Preheating Train Retrofit keeping Heat Exchanger Network Topology. AIChe Spring Meeting and Global Congress on Process Safety, Vol 1. (2012).
Mamdouh Gadalla; Dina Kamel; Fatma, Hanafy Ashour and Hemdan, Nour El din. A New Optimisation Based Retrofit Approach for Revamping an Egyptian Crude Oil Distillation Unit. Energy Procedia, Vol. 36. (2013).
Coker, A. Kayode. Fortran Programs for Chemical Process Design, Analysis and Simulation. Book. Imprint: Gulf Professional Publishing. (1995).
Gadalla, Mamdouh A. A Novel Graphical Technique for Pinch Analysis Applications: Energy Targets and Grassroots Design. Energy Conversion Management, Vol. 96. ( 2015).
Perlingeiro, Carlos Augusto G. Engenharia de processos: Análise, simulação, Optimização e Síntese de Processos Químicos. Editora: Blucher. São Paulo, Brasil. (2005).