A numerical performance study of a fixed-bed reactor for methanol synthesis by CO2 hydrogenation

Izbassarov, Daulet; Nyári, Judit; Tekgül, Bulut; Laurila, Erkki; Kallio, Tanja; Santasalo-Aarnio, Annukka; Kaario, Ossi; Vuorinen, Ville

doi:10.1016/j.ijhydene.2021.02.031

Cited by 17 publications

(6 citation statements)

References 46 publications

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“…Low amounts of methanol are synthesized at high temperatures because the conversion of the syngas components (H 2 , CO and CO 2 ) reduced. Izbassarov et al [64] claimed that the trend seen can be explained by the fact that methanol synthesis is predominantly an exothermic process, which implies that increasing the temperature reduces the equilibrium and consequently methanol production drops.…”

Section: Effect Of Methanol Synthesis Temperature On Syngas Conversio...mentioning

confidence: 99%

“…6. Methanol production was more pronounced at high pressure, but it should be emphasized that these pressures also increase energy demand investment costs, and safety concerns for the reactor [35,64]. Samimi et al [68] found out from their experiment that even though high pressures are favourable for the synthesis of methanol, significant amounts of water are also produced as catalyst poisoning during the procedure [68].…”

Section: Effect Of Methanol Synthesis Pressure On Syngas Conversion A...mentioning

confidence: 99%

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Techno-economic analysis of methanol synthesis from syngas derived from steam reforming of crude glycerol

Kgwedi

Seedat

Fajimi

et al. 2023

Biomass Conv. Bioref.

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Due to the large amount of crude glycerol produced as a by-product by the biodiesel industry, alternative technologies for converting glycerol to value-added fuels such as syngas have been proposed. By employing four main processes, the syngas could further be used to produce methanol. The first process is steam reforming (STR) where the crude glycerol is converted into syngas. The next step is a three-unit pressure swing adsorption (PSA) system which is employed to condition the syngas into the required stoichiometric ratio. The final two process are the methanol synthesis and methanol purification processes. The effects of STR temperature, steam-to-glycerol ratio (SGR), methanol synthesis temperature and pressure were all investigated. The results obtained shows that 0.29 kgMeOH/kgCG can be obtained through this process at STR of 650 ℃, SGR of 9, and methanol synthesis temperature and pressure of 250 ℃ and 80 bar respectively. In addition, a methanol production plant capacity of 6.8 tonnes/hr of crude glycerol feed for a 20-year plant life was investigated. The result from the economic analysis carried out shows that production of methanol from glycerol is economically feasible with net present value (NPV), return on investment, (ROI), discounted payback period (DPBP) and net production cost (NPC) of $74.2 million, 17%, 4.59 years, and 85₵/kgMeOH respectively. The sensitivity analysis results show that the revenue from sales of methanol and byproducts (hydrogen and methane), the manufacturing cost, the cost of raw materials, as well as fixed capital investment (FCI) were the most sensitive economic parameters.

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Section: Effect Of Methanol Synthesis Temperature On Syngas Conversio...mentioning

confidence: 99%

Section: Effect Of Methanol Synthesis Pressure On Syngas Conversion A...mentioning

confidence: 99%

Techno-economic analysis of methanol synthesis from syngas derived from steam reforming of crude glycerol

Kgwedi

Seedat

Fajimi

et al. 2023

Biomass Conv. Bioref.

View full text Add to dashboard Cite

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“…In industry, fixed bed reactor is often preferred for methanol synthesis process, so many works on parameter optimization of fixed bed reactor have been published successively (Figure 30). [ 236–238 ] Zhang et al [ 237 ] designed a series process reactor. The first reactor is a water‐cooled reactor with a radial flow cooling plate concentric circle structure; the second reactor is an air‐cooled reactor with a fixed bed structure of multi‐stage indirect heat transfer between layers.…”

Section: Design Of Reactor For Methanol Production From Carbon Dioxidementioning

confidence: 99%

“…The final reaction conversion reached 17.9% and the methanol selectivity reached 72.8%. Izbassarov et al [ 236 ] studied the methanol production performance of two‐dimensional fixed bed reactor (Figure 30) under certain parameters based on LHHW kinetic model. The results showed that the methanol yield was related to pressure, catalyst loading, reaction material ratio, and packing density, and the staggered and random catalyst packing methods were better than the in‐line packing methods.…”

Section: Design Of Reactor For Methanol Production From Carbon Dioxidementioning

confidence: 99%

Heterogeneous catalysts, reaction kinetics, and reactor designs for methanol production from carbon dioxide: A critical review

Wang,

Liu,

et al. 2023

Can J Chem Eng

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The process of preparing methanol from carbon dioxide is one of the ways to solve the environmental problems caused by greenhouse gases, the problem of fossil energy depletion, and the problem of fuel exhaust emissions. However, after decades of development, the process of preparing methanol from carbon dioxide is still unable to achieve large‐scale industrialization. This critical review sharply points out the problems and obstacles that need to be solved urgently on the industrialization road of carbon dioxide methanol preparation process and summarizes its progress. The problems faced by the methanol production industry from carbon dioxide are first the thermodynamic constraints, second the lower reaction rate and conversion effect, and finally the energy loss. In order to solve these problems, this paper first introduces the active sites, structural effects, and dynamic changes of copper‐based catalysts, as well as the unique reaction mechanism and doping modification of indium‐based catalysts. Zinc and zirconium promoters and some metal oxide supports can form unique interactions with active components to improve the catalytic performance of the catalyst. Next, various kinetic models and applications of methanol production from carbon dioxide are summarized, which is an important bridge linking laboratory and industrialization; the advantages and disadvantages of fixed bed reactor and paddle reactor were compared. Finally, the full text is summarized and prospected.

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“…The discretization methods are chosen so that they are consistent with our previous works (see e.g. [16][17][18][19][20]45]). The temporal discretization is carried out using a second order implicit time integration method while the convection term is discretized with a second order accurate non-linear scheme called the gamma scheme [46].…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical Evidence on Deflagration Fronts in a Methane/N-Dodecane Dual-Fuel Shear Layer Under Engine Relevant Conditions

et al. 2022

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A numerical performance study of a fixed-bed reactor for methanol synthesis by CO2 hydrogenation

Cited by 17 publications

References 46 publications

Techno-economic analysis of methanol synthesis from syngas derived from steam reforming of crude glycerol

Techno-economic analysis of methanol synthesis from syngas derived from steam reforming of crude glycerol

Heterogeneous catalysts, reaction kinetics, and reactor designs for methanol production from carbon dioxide: A critical review

Numerical Evidence on Deflagration Fronts in a Methane/N-Dodecane Dual-Fuel Shear Layer Under Engine Relevant Conditions

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