Perspectives on Resource Recovery from Bio-Based Production Processes: From Concept to Implementation

Udugama, Isuru A.; Mansouri, Seyed Soheil; Mitić, Aleksandar; Flores-Alsina, Xavier; Gernaey, Krist V.

doi:10.3390/pr5030048

Cited by 29 publications

(16 citation statements)

References 135 publications

(156 reference statements)

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“…Also, low-grade waste heat rejected from other processes can be additionally used to increase the refrigerant production, which is, in fact, a remarkable feature of multi-stage configurations. This facilitates waste heat recovery as a means of implementing a circular economy strategy [33,34]. The streams #18 and #7 (refrigerant vapors) transfer their heat into the condenser COND.…”

Section: Process Descriptionmentioning

confidence: 99%

Model-Based Cost Optimization of Double-Effect Water-Lithium Bromide Absorption Refrigeration Systems

et al. 2019

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This work presents optimization results obtained for a double-effect H2O-LiBr absorption refrigeration system considering the total cost as minimization criterion, for a wide range of cooling capacity values. As a model result, the sizes of the process units and the corresponding operating conditions are obtained simultaneously. In this paper, the effectiveness factor of each proposed heat exchanger is considered as a model optimization variable which allows (if beneficial, according to the objective function to be minimized) its deletion from the optimal solution, therefore, helping us to determine the optimal configuration. Several optimization cases considering different target levels of cooling capacity are solved. Among the major results, it was observed that the total cost is considerably reduced when the solution heat exchanger operating at low temperature is deleted compared to the configuration that includes it. Also, it was found that the effect of removing this heat exchanger is comparatively more significant with increasing cooling capacity levels. A reduction of 9.8% in the total cost was obtained for a cooling capacity of 16 kW (11,537.2 $·year−1 vs. 12,794.5 $·year−1), while a reduction of 12% was obtained for a cooling capacity of 100 kW (31,338.1 $·year−1 vs. 35,613.9 $·year−1). The optimization mathematical model presented in this work assists in selecting the optimal process configuration, as well as determining the optimal process unit sizes and operating conditions of refrigeration systems.

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Section: Process Descriptionmentioning

confidence: 99%

Model-Based Cost Optimization of Double-Effect Water-Lithium Bromide Absorption Refrigeration Systems

et al. 2019

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“…Investors require low capital expenditures unless significant efficiency gains are to be expected. Further, unproven designs require additional development work, which may put a significant burden onto project execution 28–30 …”

Section: Introductionmentioning

confidence: 99%

Separation of middle boiling trace compounds by distillation: An investigation of practical implications of complex column arrangements on an industrial methanol distillation case study

Udugama

Kirkpatrick

et al. 2020

Asia-Pacific J Chem Eng

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The drive to achieve greater energy efficiencies is well‐established in the fine chemical industries with distillation processes being a key focus due to their disproportionate energy consumption totaling more than 40% of the overall plant. The objective of this paper is to specifically focus on the energy efficiency benefits that would be realized by employing intensified distillation column configurations on a high purity, multicomponent, high recovery industrial methanol distillation where a middle boiling trace ethanol component must be managed to ensure on specification production (<10 ppm wt. ethanol in product and <5 ppm impurities in bottoms). Based on technology maturity constraints, five column configurations were selected for further analysis, comprising a direct synthesis configuration, a side draw column, a Petlyuk inspired recovery column arrangement, a divided wall column, and a cut divided wall column. These configurations were then simulated on an industrial process simulator where all configurations were able to match the strict industrial product specifications and design limits. The energy usage of the column configurations was improved through a systematic analysis, and the results revealed that all intensified columns have a superior energy usage compared to the direct synthesis configuration but with the gains limited to only 3%. An unbiased consideration of the energy efficiency results, together with other external factors including cost of capital and operability, shows that the recovery column configuration would be the most practical choice despite the presence of the divided wall column configuration which represents a greater level of intensification and integration.

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“…Along with this problem, humankind has to face serious environmental and energy problems due to the energy-intensive lifestyle that has emerged in developed countries over the last century [13][14][15][16][17][18][19][20]. In this regard, sustainable conversion of waste to energy or chemicals is considered a reliable way to solve two problems once: reducing the amounts of non-recyclable and non-reusable waste and producing a significant amount of energy and/or chemicals in order to satisfy increasing demand.…”

Section: Introductionmentioning

confidence: 99%

Pilot Plant Data Assessment in Anaerobic Digestion of Organic Fraction of Municipal Waste Solids

et al. 2019

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In this paper, a preliminary study of anaerobic digestion of organic fraction of municipal solid wastes (OFMSW) in presented with the aim to compare the performances of both wet- and dry-type reactors. The treatment of OFMSW via anaerobic digestion (AD) producing biogas is a process that is receiving a growing interest because two different needs can be coupled: the request of sustainable municipal waste treatments and increasing demand renewable energy. This paper aims to offer experimental results comparing batch test and continuous experimental reactors under different conditions of humidity and solid content. Results show that both the investigated configurations may be used for converting OFMSW into a high quality biogas and that the increase of dry matter in the continuous process still allows to achieve significant biogas production rates. A slight reduction of the methane content was observed (less than 5% relative) that can be also related to the change in the level of volatile fatty acids. These results are very promising in supporting the possibility of operating an industrial scale plant with a dry-process without affecting the system performance.

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Perspectives on Resource Recovery from Bio-Based Production Processes: From Concept to Implementation

Cited by 29 publications

References 135 publications

Model-Based Cost Optimization of Double-Effect Water-Lithium Bromide Absorption Refrigeration Systems

Model-Based Cost Optimization of Double-Effect Water-Lithium Bromide Absorption Refrigeration Systems

Separation of middle boiling trace compounds by distillation: An investigation of practical implications of complex column arrangements on an industrial methanol distillation case study

Pilot Plant Data Assessment in Anaerobic Digestion of Organic Fraction of Municipal Waste Solids

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