Thermodynamic analysis and process simulation of syngas production from methane using CoWO4 as oxygen carrier

López-Ortíz, Alejandro; González-Vargas, P.E.; Meléndez-Zaragoza, M.J.; Collins-Martı́nez, V.

doi:10.1016/j.ijhydene.2017.07.119

Cited by 13 publications

(6 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reaction proceeds at a lower temperature than the gas-phase partial oxidation route [17][18][19][20], thus offering many advantages such as a reduction of undesired by-products and the ability to control the process temperature [21][22][23][24]. The catalysts used for this reaction usually contain group VIII transition metals, such as rhodium [25,26], ruthenium [27,28], platinum [29,30], palladium [31,32], nickel [33,34], iridium [35,36], and cobalt [37,38]. The reaction can proceed in short contact time reactors under high-temperature conditions [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chen

Song

2018

Processes

View full text Add to dashboard Cite

This paper addresses the issues related to the favorable operating conditions for the small-scale production of synthesis gas from the catalytic partial oxidation of methane over rhodium. Numerical simulations were performed by means of computational fluid dynamics to explore the key factors influencing the yield of synthesis gas. The effect of mixture composition, pressure, preheating temperature, and reactor dimension was evaluated to identify conditions that favor a high yield of synthesis gas. The relative importance of heterogeneous and homogenous reaction pathways in determining the distribution of reaction products was investigated. The results indicated that there is competition between the partial and total oxidation reactions occurring in the system, which is responsible for the distribution of reaction products. The contribution of heterogeneous and homogeneous reaction pathways depends upon process conditions. The temperature and pressure play an important role in determining the fuel conversion and the synthesis gas yield. Undesired homogeneous reactions are favored in large reactors, and at high temperatures and pressures, whereas desired heterogeneous reactions are favored in small reactors, and at low temperatures and pressures. At atmospheric pressure, the selectivity to synthesis gas is higher than 98% at preheating temperatures above 900 K when oxygen is used as the oxidant. At pressures below 1.0 MPa, alteration of the dimension in the range of 0.3 and 1.5 mm does not result in significant difference in reactor performance, if made at constant inlet flow velocities. Air shows great promise as the oxidant, especially at industrially relevant pressure 3.0 MPa, thereby effectively inhibiting the initiation of undesired homogeneous reactions.

show abstract

Section: Introductionmentioning

confidence: 99%

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chen

Song

2018

Processes

View full text Add to dashboard Cite

show abstract

“…The thermal energy efficiency was evaluated using equation (10) proposed by Smith [19], which is based on the first law of thermodynamics and is defined as the ratio between the energy produced (H 2 + CO) and the energy input (CH 4 ). www.videleaf.com ̇ ̇ (10) where m i and LHV i are the mass flow and the lower heating value of the "i" species, respectively, while W i and q i are the mechanical work and the required heat of the components "i", respectively. This latter refers mainly to the mechanical work and energy requirements of the equipment involved in the process to be evaluated.…”

Section: Syngas Yield and Thermal Efficiencymentioning

confidence: 99%

“…Because heat transfer occurs directly between the gas and the oxygen carrier, it is convenient to reduce the size of the reactor and these factors presumably making the CLPO a cheaper technology than the conventional POX process [8,10].…”

Section: Introductionmentioning

confidence: 99%

Chemical-Looping Syngas Production by Partial Oxidation of Mixed Iron Oxides and Methane: Thermodynamic Evaluation and Process Simulation

Collins-Martı́nez¹,

Cazares-Marroquín²,

Salinas-Gutiérrez³

et al. 2021

Prime Archives in Chemistry

Self Cite

View full text Add to dashboard Cite

Partial oxidation (POX) by chemical looping (CL) using mixed iron oxides can be an option to current POX process. In the present research the use of FeMoO 4 , Fe 2 ZnO 4 , Fe 2 MnO 4 employed as oxygen carriers under a CL reaction scheme is proposed to overcome the current disadvantages of methane POX process. The objective of the present work is to identify potential iron-based metal oxides for the production of syngas capable regenerate at favorable conditions, while producing H 2 . A thermodynamic evaluation and process simulation of a CL-POX reaction scheme using mixed iron-oxides Reduction was carried out in a first reactor:4 + Fe 2 MO 4 = H 2 + CO + Fe + M, while a second one was devoted to oxidation of the reduced metals: Fe + M + H 2 O = Fe 2 MO 4 + H 2 , where M = Mo, Zn or Mn. Results indicate that FeMoO 4 , Fe 2 ZnO 4 and Fe 2 MnO 4 generated syngas gas at 750 °C, 730 °C and 600 °C, respectively. However, FeMoO 4 was not fully regenerated at favorable conditions. Likewise, Fe 2 ZnO 4 and Fe 2 MnO 4 were completely regenerated at 440 °C and 640 °C. Finally, Fe 2 MnO 4 shown the more favorable operating conditions among the studied oxygen carriers towards the production of Syngas.

show abstract

“…Fuel processing converts LPG into hydrogen and carbon dioxide. Lopez-Ortiz et al elaborated the utilization of cobalt tungstate in a chemical looping partial oxidation of methane process to generate syngas [54]. They carried out simulations and thermodynamic analysis.…”

Section: Production Of Hydrogen From Liquefied Petroleum Gasmentioning

confidence: 99%

Hydrogen Production from Light Hydrocarbons

Ibrahim¹

2018

Advances in Hydrogen Generation Technologies

View full text Add to dashboard Cite

Recognizing and procurement of a sustainable energy system are among the supreme important problems that today's scientists should tackle. Interchanging the existing fossil fuels and transforming them into a sustainable fuel is one of the vital pieces in that system. Hydrogen as an energy carrier, obtained from light hydrocarbons, can take an essential role in the matters of sustainability, eco-friendly emissions, and energy saving. Our enthusiasm in stirring toward a hydrogen economy has its root in the vision of securing energy requirements at a satisfactory price, with larger competence and small environmental destruction associated with the utilization of traditional fuels. Hydrogen production pathways and relevant issues are discussed here. This chapter highlights the recent technological progress in the light hydrocarbons toward sustainable hydrogen production.

show abstract

Thermodynamic analysis and process simulation of syngas production from methane using CoWO4 as oxygen carrier

Cited by 13 publications

References 34 publications

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chemical-Looping Syngas Production by Partial Oxidation of Mixed Iron Oxides and Methane: Thermodynamic Evaluation and Process Simulation

Hydrogen Production from Light Hydrocarbons

Contact Info

Product

Resources

About