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18 results on '"CO2 hydrogenation to methanol"'

8. HYBRID MODEL FORMULATION FOR THE UNSTEADY STATE SIMULATION OF A PACKED BED REACTOR FOR CO2 HYDROGENATION TO METHANOL.

Author

LIU, G. R., TAN, V. B. C., HAN, X., Zahedi, G., Elkamel, A., Lohi, A., Jahanmiri, A., and Rahimpor, M. R.

Abstract

Carbon dioxide emission is well recognized as the main source of global warming. The catalytic hydrogenation of carbon dioxide to methanol represents an effective method for preventing this side effect. The objective of this paper is to present a hybrid neural network (NN) model for the simulation of a differential catalytic hydrogenation reactor of carbon dioxide to methanol. The hybrid model consists of two parts: a mechanistic model and a neural model. The mechanistic model employs heat and mass transfer, and pressure drop equations and calculates the effluent temperature of the reactor by taking outlet mole fractions from the output of the neural network model. The prepared hybrid model was successfully tested with plant experimental data. The insights of this research indicate a very fast responding model in comparison to traditional models to demonstrate CO2 reduction as a function of time and reactor length. Variation of temperature and other compositions with time and bed height are also investigated in this article. [ABSTRACT FROM AUTHOR]

Published
2006
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9. Proceedings of the 10th Hydrogen Technology Convention, Volume 1

Author

Sun, Hexu, Pei, Wei, Dong, Yan, Yu, Hongmei, and You, Shi

Subjects
SDG-7, Conference Proceedings, Hydrogen Energy, Hydrogen Energy Applications, Fuel Cells, Hydrogen Safety, Hydrogen Transport and Distribution, Hydrogen Production and Purification, Hydrogen Policy and Strategy, thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TD Industrial chemistry and manufacturing technologies::TDC Industrial chemistry and chemical engineering, thema EDItEUR::P Mathematics and Science::PH Physics::PHH Thermodynamics and heat, thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science, thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials::TNKS Security and fire alarm systems, thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TR Transport technology and trades::TRC Automotive technology and trades
Abstract

This open access book highlights the latest advances in fundamental research, technologies and applications of hydrogen energy and fuel cells. In recent years, energy conversion between electricity and hydrogen energy has attracted increasing attention as a way to adjust the load of the grid. This book discusses and exchanges cutting-edge findings and technological developments in fields such as new proton exchange membrane electrolyzers, new electrode materials and catalysts, renewable energy, off-grid/grid-connected water electrolysis for hydrogen production, key materials and components of fuel cells, high-temperature solid oxide water electrolysis, energy storage technologies and research, CO2 hydrogenation to methanol, nitrogen to ammonia and other applications with industrial potential. The main topics of the proceedings include: 1) Policies and strategies for hydrogen energy and fuel cells; 2) Advanced proton exchange membranes, electrodes and catalyst materials for water electrolysis; 3) Advanced hydrogen compression, storage, transportation and distribution technologies; 4) Safety and related standards; 5) Manufacture and R&D of key materials and components of fuel cells and stack systems.

Published
2024
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10. BackMatter.

Author

Aresta, Michele, Dibenedetto, Angela, and Quaranta, Eugenio

Published
2016

12. FrontMatter.

Author

Aresta, Michele, Dibenedetto, Angela, and Quaranta, Eugenio

Published
2016

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