A mathematical model formulation for the design of an integrated biodiesel-petroleum diesel blends system

Ivanov, Branimir; Stoyanov, Stoyan Kolev

doi:10.1016/j.energy.2016.01.038

Cited by 19 publications

(8 citation statements)

References 44 publications

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“…Other optimization criteria such as profit [52] and net present value (NPV) maximization [20], although limited, are also considered. In addition, most of the existing models consider the biofuels biomass supply chains that include biorefineries [17,53,54], and much fewer supply chain models that consider power plants for electricity generation and co-generation [50,55]. This research proposes a mathematical model that can be applied to determine the optimal configuration of biomass supply chains that depends on agriculture residues for the production of electric and thermal energy.…”

Section: Optimal Design Of National Network Of Biomass Power Plantsmentioning

confidence: 99%

Techno-Economic Analysis for the Optimal Design of a National Network of Agro-Energy Biomass Power Plants in Egypt

2021

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Extensive studies are conducted to investigate the potential and techno-economic feasibility of bioenergy routes in different countries. However, limited researches have been focused on the whole national agricultural bioenergy resources in Egypt. This research provides an assessment of the potential agricultural biomass resources for electric energy production in Egypt. It provides a strategic perspective for the design of a national network of biomass power plants to utilize the spatially available agricultural residues throughout a country. A comprehensive approach is presented and is applied to Egypt. First, the approach estimates the amount, type, and characteristics of the agricultural residues in each Egyptian governorate. Then, a techno-economic appraisal for locating a set of collection stations, and installing a direct combustion biomass power plant in each governorate is conducted. SAM simulation software is used for the technical and economic appraisals, and preliminary plant capacities are estimated assuming one plant in each governorate. Secondly, a new mixed integer linear programming (MILP) model is proposed and applied to optimally design a biomass supply chain national network to maximize the overall network profit. The network is composed of the collection stations, the potential biomass power plants, and the flow distribution of residues to supply the selected plants. Results indicate that the Egyptian agricultural residue resources can produce 10 million ton/year of dry residues, generate 11 TWh/year, an average levelized cost of electricity () of 6.77 ¢/kWh, and supply about 5.5% of Egypt’s current energy needs. Moreover, the optimization results reveal that a network of 5 biomass power plants with capacities of 460 MW each should be established in Egypt. This approach is thought to be particularly suitable to other developing countries whose energy demand depends on fossil fuels and poses a heavy economic burden, and whose residues are massive, wasted, and not industrialized. The obtained results may also enrich future comparative research that studies the impact and feasibility of implementing agro-residue based biomass electric energy generation.

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Section: Optimal Design Of National Network Of Biomass Power Plantsmentioning

confidence: 99%

Techno-Economic Analysis for the Optimal Design of a National Network of Agro-Energy Biomass Power Plants in Egypt

2021

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“…- Ivanov & Stoyanov (2016) also presented a model focused on the biodiesel production process, which can be considered to have multiple links, with a compilation of factories that integrate to generate oil-biodiesel blends.…”

Section: Optimization Models Incorporating Tax Aspectsmentioning

confidence: 99%

Optimization of a logistics network considering allocation of facilities and taxation aspects

et al. 2020

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This article analyzes the impacts of operational and tax changes in a logistics network, considering the location of facilities and the following taxes: the Brazilian State Excise Tax on Circulation of Goods and Services, the Import Duty, the Brazilian State Excise Tax in Tax Substitution, the Social Integration Program, the Contribution for the Financing of Social Security and the Brazilian Federal Excise Tax on Industrialized Products. The influence of incorporations and outsourcing of distribution services in solving global localization issues concerning various links in a chain suplly has also been considered. The problem was modeled and solved by the GAMS modeling language using Solver CPLEX. The proposed Mixed Integer Linear Programming model minimizes operating costs taking into account tax benefits and the best use of the credits related to the Tax on Circulation of Goods and Services of a multiproduct network. A real application involving a company in the animal feed production sector was developed. The results showed that the model allowed to evaluate conveniently how the choice of the facilities and the characteristics of the product flows impacted the overall costs of the system. The results also evidenced the need to make decisions based on the existing tax structure, since the scenarios without tax optimization generated substantial losses to the companies. This information added quality to the manager of the company studied.

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“…In this current scenario, there is a high need for phasing out petroleum-based gasoline fuels and moving out towards alternative synthetic fuels which not only have higher combustion efficiency but also lead to more greener emissions. Biodiesels have emerged in this present scenario, as the most preferred and renewable hydrocarbon liquid fuels to meet these requirements [11,12]. Generally, they are produced from vegetable oils, animal fats, algae, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of kinetics of phenyl radicals with ethyl formate in the gas phase using cavity ring-down spectroscopy and theoretical methodologies

Mondal

Rajakumar

2021

Photochem Photobiol Sci

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The gas-phase kinetics of phenyl radical ( • C 6 H 5 ) with ethyl formate (HCO 2 Et, EF) was investigated experimentally using ultrasensitive laser-based cavity ring-down spectroscopy (CRDS). Phenyl radicals were generated by photolyzing nitrosobenzene (C 6 H 5 NO) at 248 nm and thereby probed at 504.8 nm. The rate coefficients for the (phenyl radical + EF) reaction were investigated between the temperatures of 260 and 361 K and at a pressure of 61 Torr with nitrogen (N 2 ) as diluent. The temperaturedependent Arrhenius expression for the test reaction was obtained as: k Expt,260−361K phenyl+EF =(1.20 ± 0.16) × 10 -13 exp[− (435.6 ± 50.0)/T] cm 3 molecule −1 s −1 and the rate coefficient at room temperature was measured out to be: k Expt,298K phenyl+EF =(4.54 ± 0.42) × 10 -14 cm 3 molecule −1 s −1 . The effects of pressure and laser fluence on the kinetics of the test reaction were found to be negligible within the experimental uncertainties. To complement the experimental findings, kinetics for the reaction of phenyl radicals with EF was investigated theoretically using Canonical Variational Transition State Theory (CVT) with Small Curvature Tunnelling (SCT) at CCSD(T)/cc-pVDZ//B3LYP/6-31 + G(d,p) level of theory in the temperatures between 200 and 400 K. The theoretically calculated rate coefficients for the title reaction were expressed in the Arrhenius form as: k Theory,200−400K phenyl+EF = (1.48 ± 0.56) × 10 -38 × T 8.47 × exp [(2431.3 ± 322.0)/T] cm 3 molecule −1 s −1 and the corresponding rate coefficient at room temperature was calculated to be: k Theory,298K phenyl+EF = 4.91 × 10 -14 cm 3 molecule −1 s −1 . A very good agreement was observed between the experimentally measured and theoretically calculated rate coefficients at 298 K. Thermochemical parameters as well as branching ratios for the reaction of (phenyl radical + EF) are also discussed in this manuscript.

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A mathematical model formulation for the design of an integrated biodiesel-petroleum diesel blends system

Cited by 19 publications

References 44 publications

Techno-Economic Analysis for the Optimal Design of a National Network of Agro-Energy Biomass Power Plants in Egypt

Techno-Economic Analysis for the Optimal Design of a National Network of Agro-Energy Biomass Power Plants in Egypt

Optimization of a logistics network considering allocation of facilities and taxation aspects

Investigation of kinetics of phenyl radicals with ethyl formate in the gas phase using cavity ring-down spectroscopy and theoretical methodologies

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