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Energy analysis and life cycle assessment of furfural and 5-hydroxymethylfurfural integrated biorefinery processes with heat pump-assisted reactive distillation
(2025-03-15)
Wiranarongkorn, Kunlanan
;
Im-Orb, Karittha
;
Saebea, Dang
;
Patcharavorachot, Yaneeporn
;
Arpornwichanop, Amornchai
Bio-based products, such as biochemicals and bioenergy, have received considerable attention in efforts to mitigate the effects of climate change. In this study, an integrated biorefinery process for the production of furfural and 5-hydroxymethylfurfural (HMF) using sugarcane bagasse is proposed. Three process scenarios were compared: the integrated process of HMF and furfural production using (i) conventional reactive distillation (RD), (2) heat pump-assisted RD, and (3) heat pump-assisted RD with heat integration. The comparison focused on energy efficiency and life cycle analysis. The simulation results revealed that the overall energy efficiency of the proposed process could increase by 14.5 % with the additional heat pump to the RD column at a pressure ratio of 1.4 due to a reduction of external energy consumption. This improvement reduced the environmental impact of natural gas combustion for utility production. Specifically, the global warming potential of processes involving heat pump-assisted RD without and with heat integration decreased by 16.66 % and 80.08 %, respectively, compared to conventional RD. These results indicate that incorporating heat pump-assisted RD and implementing effective heat management within the integrated biorefinery process significantly decreased external energy consumption, leading to substantial environmental benefits.
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Exergy and exergoeconomic analyses of sustainable furfural production via reactive distillation
(2021-07-01)
Wiranarongkorn, Kunlanan
;
Im-orb, Karittha
;
Panpranot, Joongjai
;
Maréchal, François
;
Arpornwichanop, Amornchai
Lignocellulosic biomass is a potential renewable resource for production of high-value, sustainable products. Furfural is among the important bio-based chemicals in biorefineries. However, the conventional process of furfural production using a reaction-separation network entails low product yield but high fixed and operating costs owing to the complex process of separation. In this study, a process of furfural production via reactive distillation (RD) was investigated and designed based on the concept of process intensification. Exergy and exergoeconomic analyses were applied to evaluate the process performance. When the RD column was operated at its optimal configuration, furfural production of 81.78 kg h<sup>−1</sup> was achieved with xylose conversion and furfural yield of 97.9% and 97.4%, respectively. The exergy efficiency of furfural production was 56.41%, while the RD column exhibited the maximum exergy destruction rate among all components with an exergy efficiency of 69.82%. The exergy destruction rate declined with decrease in the reboiler duty of the RD column and increase in xylose concentration. The exergoeconomic analysis revealed that decreasing the reboiler duty had the highest impact on the total cost of furfural production. Decreases in feedstock and catalyst costs as well as interest rate additionally lowered the total cost rate of the system.
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Intensification of reactive distillation for TAME synthesis based on the analysis of multiple steady-state conditions
(2018-12-01)
Yamaki, Takehiro
;
Matsuda, Keigo
;
Na-Ranong, Duangkamol
;
Matsumoto, Hideyuki
Our previous study reported that operation in multiple steady states contributes to an improvement in reaction conversion, making it possible to reduce the energy consumption of the reactive distillation process for tert-amyl methyl ether (TAME) synthesis. This study clarified the factors responsible for an improvement in the reaction conversion for operation in the multiple steady states of the reactive distillation column used in TAME synthesis. The column profiles for those conditions, in which multiple steady states existed and those in which they did not exist, were compared. The vapor and liquid flow rates with the multiple steady states were larger than those when the multiple steady states did not exist. The effect of the duty of the intermediate condenser, which was introduced at the top of the reactive section, on the liquid flow rate for a reflux ratio of 1 was examined. The amount of TAME production increased from 55.2 to 72.1 kmol/h when the intermediate condenser was operated at 0 to -5 MW. Furthermore, the effect of the intermediate reboiler duty on the reaction performance was evaluated. The results revealed that the liquid and vapor flow rates influenced the reaction and separation performances, respectively.
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Energy saving characteristics of an internal heat integrated reactive distillation process for methyl acetate synthesis
(2016-03-20)
Yamaki, Takehiro
;
Matsuda, Keigo
;
Na-Ranong, Duangkamol
;
Matsumoto, Hideyuki
A model for an internally heat integrated reactive distillation process without a compressor was developed, and the synthesis of methyl acetate from methanol and acetic acid was simulated. The applicability was evaluated by using the process simulator Aspen Plus. The steady state simulation showed that the energy consumption of the heat integrated reactive distillation process was lower than that of conventional reactive distillation.

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