Development of a thermoeconomic methodology for the optimization of biodiesel production—Part I: Biodiesel plant and thermoeconomic functional diagram

Coronado, Christian R.; Tuna, Celso Eduardo; Zanzi, Rolando; Vane, Lucas Fachini; Silveira, José Luz

doi:10.1016/j.rser.2013.02.015

Cited by 13 publications

(8 citation statements)

References 6 publications

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“…These values can be justified by a lower electrical and thermal energy consumption in the aforementioned cases. The exergetic analysis demonstrate similar results compared to those reported by Blanco-Marigorta [36] and Coronado [31].…”

Section: Resultssupporting

confidence: 86%

“…There are several software that are used to simulate chemical processes, such as: Aspen, Chemcad Plus, Hysys, among others. The present paper used as benchmark a biodiesel production plant that was studied and simulated by Zhang [39] and Coronado [31]. The simulated plant was carried using the Hysys On the study, two thermodynamic models were used: the NRTL (for the simulation of the biodiesel production process) and the PSRK (for the simulation of steam reforming glycerin process).…”

Section: Hysys Software and Thermodynamic Modelsmentioning

confidence: 99%

“…The NRTL (Non-Random Two-Liquid) [31,39] and PSRK (Predictive Soave RedlichKwong) [40] models were chosen for the present study; Setting the processing capacity of canola oil, the operation parameters for the components of the plant, and the main thermodynamic properties (flow, temperature and pressure). Table 1 shows the operating conditions of each process in the plant, in accordance to reported in scientific literature.…”

Section: Hysys Software and Thermodynamic Modelsmentioning

confidence: 99%

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Exergetic evaluation of incorporation of hydrogen production in a biodiesel plant

Boloy

Ferrán

Santos

et al. 2015

International Journal of Hydrogen Energy

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Section: Resultssupporting

confidence: 86%

Section: Hysys Software and Thermodynamic Modelsmentioning

confidence: 99%

Section: Hysys Software and Thermodynamic Modelsmentioning

confidence: 99%

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Exergetic evaluation of incorporation of hydrogen production in a biodiesel plant

Boloy

Ferrán

Santos

et al. 2015

International Journal of Hydrogen Energy

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“…In addition, the used catalyst was CH 3 OK, which means high costs and preventive measures to avoid contact with atmospheric moisture. In this work, two serial transesterification reactions were proposed to decrease MeOH concentration and to avoid the use of CH 3 OK as a catalyst because it would involve higher costs in an industrial process [14,16,19,26]. In this case, KOH was used as a catalyst because it is cheaper and easier to use.…”

Section: Reaction Conditions and Variables Of The Designmentioning

confidence: 99%

Biodiesel Production from Castor oil by Two-Step Catalytic Transesterification: Optimization of the Process and Economic Assessment

et al. 2019

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The use of biodiesel and the requirement of improving its production in a more efficient and sustainable way are becoming more and more important. In this research work, castor oil was demonstrated to be an alternative feedstock for obtaining biodiesel. The production of biodiesel was optimized by the use of a two-step process. In this process, methanol and KOH (as a catalyst) were added in each step, and the glycerol produced during the first stage was removed before the second reaction. The reaction conditions were optimized, considering catalyst concentration and methanol/oil molar ratio for both steps. A mathematical model was obtained to predict the final ester content of the biodiesel. Optimal conditions (0.08 mol·L −1 and 0.01 mol·L −1 as catalyst concentration, 5.25:1 and 3:1 as methanol/oil molar ratio for first and second step, respectively) were established, taking into account the biodiesel quality and an economic analysis. This type of process allowed cost saving, since the amounts of methanol and catalyst were significantly reduced. An estimation of the final manufacturing cost of biodiesel production was carried out.Biodiesel production from castor oil was studied in mixtures with soybean oil. Nevertheless, nonsignificant substrate preference was observed [9]. On the other hand, the use of co-solvents was an additional method for improving castor oil biodiesel yield [10]. In this case, hexane was used as a co-solvent and biodiesel yield was not significantly affected by the presence of this compound. A high alcohol/oil molar ratio, 20:1, was also necessary. The transesterification of castor oil using methanol was done with ultrasound; the highest ester content was 93.3% [11]. Solid catalysis was also tested in castor oil transesterification [12]. The catalyst was composed of Ag salts and 29:1 methanol/oil molar ratio, 60 • C, and a reaction time of 3 h were necessary to reach 90% biodiesel yield. As seen in previous works, the effort to enhance the results of the conventional method did not lead to completely satisfactory conclusions. The highest ester content, 97%, was obtained with homogeneous basic catalysis and conventional heating. However, 18.8:1 methanol/oil molar ratio was necessary [8].The transesterification is a reversible reaction. When enough catalyst is present in the reaction medium, chemical equilibrium is reached. Methanol is usually added in higher ratios than the stoichiometric ratio (3:1) in order to shift the equilibrium position of the reaction towards the product side. However, this fact strongly increases the final cost of the process due to the fact that methanol expenses are higher. Therefore, the optimization of the process is vital to reduce environmental impacts and costs [13]. In this research work, a process with two steps was proposed to obtain castor oil biodiesel with high methyl ester content and decrease costs. In this way, two reactions were carried out and, before the second one, the glycerol produced in the first reaction was removed. The removal of this produ...

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“…The non-random two liquid (NRTL) model was used to estimate properties, due to components of high polarity, such as methanol and glycerol [8,9,10,11,12]. When not available some binaries iteration parameters, these were estimated using UNIFAC vapour-liquid equilibrium and UNIFAC liquid-liquid equilibrium models [9,10].…”

Section: Thermodynamic Modelmentioning

confidence: 99%

Comparative Exergetic Analysis of Two Biodiesel Production Routes

Mari¹,

Mari²,

Ferreira³

et al. 2018

dtetr

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Abstract. Biofuels, such as biodiesel has obtained more and more relevance in the national scenario, because of the current concerns related to the burning of fossil fuels, besides of laws in force that determine the increase of biodiesel blend in common diesel each year. Thus, in this study a comparative exergetic analysis was carried out between the biodiesel production from soybean oil via basic homogeneous catalysis, case 1, where sodium hydroxide (NaOH) was used as a catalyst, and by means of supercritical alcohol, case 2, in which methanol was led to critical state. For that, two production plants were simulated in Aspen HYSYS ® V9 software accepting the same amount of main feedstock, in this case soybean oil. After the simulations, the exergetic efficiency of each process was calculated through to a global control volume (CV), having as result 94.01 and 93.50 % to the Case 1 and 2, respectively. These results confirm the feasibility of biodiesel production and the little exergetic difference was caused principally by the conditions of temperature and pressure that were imposed in the methanol supercritical case.

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Development of a thermoeconomic methodology for the optimization of biodiesel production—Part I: Biodiesel plant and thermoeconomic functional diagram

Cited by 13 publications

References 6 publications

Exergetic evaluation of incorporation of hydrogen production in a biodiesel plant

Exergetic evaluation of incorporation of hydrogen production in a biodiesel plant

Biodiesel Production from Castor oil by Two-Step Catalytic Transesterification: Optimization of the Process and Economic Assessment

Comparative Exergetic Analysis of Two Biodiesel Production Routes

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