Multi-Effect Evaporation Coupled with MVR Heat Pump Thermal Integration Distillation for Separating Salt Containing Methanol Wastewater
- 1 College of Petrochemical Engineering, Changzhou University, Changzhou, China
- 2 College of Petrochemical Engineering, Changzhou University, Changzhou, China
- 3 College of Petrochemical Engineering, Changzhou University, Changzhou, China
- 4 College of Petrochemical Engineering, Changzhou University, Changzhou, China
- 5 College of Petrochemical Engineering, Changzhou University, Changzhou, China
Abstract
Due to the high energy consumption for separation of salt containing methanol wastewater, in this work, the multi-effect evaporation coupled with mechanical vapor recompression (MVR) heat pump and thermal integration technologies were raised for the first time. The ELECNRTL thermodynamic model is used to simulate and optimize the evaporation rectification process. Energy consumption and total annual cost (TAC) are taken as objective functions. The results show that multi-effect evaporation coupled with conventional distillation process can save energy consumption and TAC by 44.12% and 39.14%. The multi-effect evaporation coupled with distillation process based on MVR heat pump technology can save energy consumption and TAC by 55.27% and 47.49%, which is super to three-effect evaporation coupled with conventional distillation process. The three-effect evaporation coupled with MVR heat integration process can save energy consumption and TAC by 81.32% and 58.55%, which is more economical than other processes. It can be clearly seen that three-effect evaporation coupled with MVR heat integration process is more competitive to deal with the salt containing methanol wastewater.
- Sundarapandiyan, S., Chandrasekar, R. and Ramanaiah, B. (2010) Electrochemical Oxidation and Reuse of Tannery Saline Wastewater. Journal of Hazardous Materials, 180, 197. https://doi.org/10.1016/j.jhazmat.2010.04.013
- Martínez-Huitle, C.A. and Brillas, E. (2009) Decontamination of Wastewaters Containing Synthetic Organic Dyes by Electrochemical Methods: A General Review. Applied Catalysis B: Environmental, 87, 105-145. https://doi.org/10.1016/j.apcatb.2008.09.017
- He, H., Chen, Y. and Li, X. (2016) Influence of Salinity on Microorganisms in Activated Sludge Processes: A Review. Interna-tional Biodeterioration & Biodegradation, 119, 520-527.
- Dinçer, A.R. and Kargi, F. (2000) Effects of Operating Parameters on Performances of Nitrification and Denitrification Processes. Bioprocess and Biosystems Engineering, 23, 75-80. https://doi.org/10.1007/s004499900126
- Pulido, J.M. (2016) A Review on the Use of Membrane technology and Fouling Control for Olive Mill Wastewater Treatment. Science of the Total Environment, S563-564, 664-675. https://doi.org/10.1016/j.scitotenv.2015.09.151
- Isarain-Chávez, E., Rosa, C.D.L. and Godínez, L.A. (2014) Comparative Study of Electrochemical Water Treatment Processes for a Tannery Wastewater Effluent. Journal of Electroanalytical Chemistry, 713, 62-69. https://doi.org/10.1016/j.jelechem.2013.11.016
- Kavouras, P., Pantazopoulou, E. and Varitis, S. (2015) Incineration of Tannery Sludge Under Oxic and Anoxic Conditions: Study of Chromium Speciation. Journal of Hazardous Materials, 283, 672-679. https://doi.org/10.1016/j.jhazmat.2014.09.066
- Vavva, C., Voutsas, E. and Magoulas, K. (2017) Process Development for Chemical Stabilization of Fly Ash from Municipal Solid Waste Incineration. Chemical Engineering Research and Design, 125, 57-71. https://doi.org/10.1016/j.cherd.2017.06.021
- Bellotti, D., Rivarolo, M. and Magistri, L. (2017) Feasibility Study of Methanol Production Plant from Hydrogen and Captured Carbon Dioxide. Journal of CO 2 Utilization, 21, 132-138. https://doi.org/10.1016/j.jcou.2017.07.001
- Jyoti, G. and Khanam, S. (2014) Simulation of Heat Integrated Multiple Effect Evaporator System. International Journal of Thermal Sciences, 76, 110-117. https://doi.org/10.1016/j.ijthermalsci.2013.08.016
- Do, T.T.H., Schnitzer, H. and Le, T.H. (2014) A Decision Support Framework Considering Sustainability for the Selection of Thermal Food Processes. Journal of Cleaner Production, 78, 112-120. https://doi.org/10.1016/j.jclepro.2014.04.044