Techno-economic assessment of a renewable bio-jet-fuel production using power-to-gas

2018 ◽  
Vol 231 ◽  
pp. 997-1006 ◽  
Author(s):  
Konstantin M. Zech ◽  
Sebastian Dietrich ◽  
Matthias Reichmuth ◽  
Werner Weindorf ◽  
Franziska Müller-Langer
Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 295
Author(s):  
Mei Yin Ong ◽  
Saifuddin Nomanbhay ◽  
Fitranto Kusumo ◽  
Raja Mohamad Hafriz Raja Shahruzzaman ◽  
Abd Halim Shamsuddin

In this study, coconut oils have been transesterified with ethanol using microwave technology. The product obtained (biodiesel and FAEE) was then fractional distillated under vacuum to collect bio-kerosene or bio-jet fuel, which is a renewable fuel to operate a gas turbine engine. This process was modeled using RSM and ANN for optimization purposes. The developed models were proved to be reliable and accurate through different statistical tests and the results showed that ANN modeling was better than RSM. Based on the study, the optimum bio-jet fuel production yield of 74.45 wt% could be achieved with an ethanol–oil molar ratio of 9.25:1 under microwave irradiation with a power of 163.69 W for 12.66 min. This predicted value was obtained from the ANN model that has been optimized with ACO. Besides that, the sensitivity analysis indicated that microwave power offers a dominant impact on the results, followed by the reaction time and lastly ethanol–oil molar ratio. The properties of the bio-jet fuel obtained in this work was also measured and compared with American Society for Testing and Materials (ASTM) D1655 standard.


Energy Policy ◽  
1989 ◽  
Vol 17 (3) ◽  
pp. 235-243 ◽  
Author(s):  
G.R. Hadder ◽  
S. Das ◽  
R. Lee ◽  
R.M. Davis

Catalysts ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 93 ◽  
Author(s):  
Jing Wu ◽  
Hong-Juan Liu ◽  
Xiang Yan ◽  
Yu-Jie Zhou ◽  
Zhang-Nan Lin ◽  
...  

It is important to develop full-performance bio-jet fuel based on alternative feedstocks. The compound 1-butanol can be transformed into jet fuel through dehydration, oligomerization, and hydrogenation. In this study, a new catalyst consisting of Zn-Mn-Co modified γ-Al2O3 was used for the dehydration of high-concentration 1-butanol to butenes. The interactive effects of reaction temperature and butanol weight-hourly space velocity (WHSV) on butene yield were investigated with response surface methodology (RSM). Butene yield was enhanced when the temperature increased from 350 °C to 450 °C but it was reduced as WHSV increased from 1 h−1 to 4 h−1. Under the optimized conditions of 1.67 h−1 WHSV and 375 °C reaction temperature, the selectivity of butenes achieved 90%, and the conversion rate of 1-butanol reached 100%, which were 10% and 6% higher, respectively, than when using unmodified γ-Al2O3. The Zn-Mn-Co modified γ-Al2O3 exhibited high stability and a long lifetime of 180 h, while the unmodified γ-Al2O3 began to deactivate after 60 h. Characterization with X-ray diffraction (XRD), nitrogen adsorption-desorption, pyridine temperature-programmed desorption (Py-TPD), pyridine adsorption IR spectra, and inductively coupled plasma atomic emission spectrometry (ICP-AES), showed that the crystallinity and acid content of γ-Al2O3 were obviously enhanced by the modification with Zn-Mn-Co, and the loading amounts of zinc, manganese, and cobalt were 0.54%, 0.44%, and 0.23%, respectively. This study provides a new catalyst, and the results will be helpful for the further optimization of bio-jet fuel production with a high concentration of 1-butanol.


2021 ◽  
Vol 2 ◽  
Author(s):  
Hans Böhm ◽  
Markus Lehner ◽  
Thomas Kienberger

Energy-intensive industries still produce high amounts of non-renewable CO2 emissions. These emissions cannot easily be fully omitted in the short- and mid-term by electrification or switching to renewable energy carriers, as they either are of inevitable origin (e.g., mineral carbon in cement production) or require a long-term transition of well-established process chains (e.g., metal ore reduction). Therefore, carbon capture and utilization (CCU) has been widely discussed as an option to reduce net CO2 emissions. In this context, the production of synthetic natural gas (SNG) through power-to-methane (PtM) process is expected to possess considerable value in future energy systems. Considering current low-temperature electrolysis technologies that exhibit electric efficiencies of 60–70%el, LHV and methanation with a caloric efficiency of 82.5%LHV, the conventional PtM route is inefficient. However, overall efficiencies of >80%el, LHV could be achieved using co-electrolysis of steam and CO2 in combination with thermal integration of waste heat from methanation. The present study investigates the techno-economic performance of such a thermally integrated system in the context of different application scenarios that allow for the establishment of a closed carbon cycle. Considering potential technological learning and scaling effects, the assessments reveal that compared to that of decoupled low-temperature systems, SNG generation cost of <10 c€/kWh could be achieved. Additional benefits arise from the direct utilization of by-products oxygen in the investigated processes. With the ability to integrate renewable electricity sources such as wind or solar power in addition to grid supply, the system can also provide grid balancing services while minimizing operational costs. Therefore, the implementation of highly-efficient power-to-gas systems for CCU applications is identified as a valuable option to reduce net carbon emissions for hard-to-abate sectors. However, for mid-term economic viability over fossils intensifying of regulatory measures (e.g., CO2 prices) and the intense use of synergies is considered mandatory.


2013 ◽  
Vol 47 (21) ◽  
pp. 12557-12565 ◽  
Author(s):  
Mark D. Staples ◽  
Hakan Olcay ◽  
Robert Malina ◽  
Parthsarathi Trivedi ◽  
Matthew N. Pearlson ◽  
...  

Author(s):  
Long H. Duong ◽  
Iman K. Reksowardojo ◽  
Tatang H. Soerawidjaja ◽  
Osamu Fujita ◽  
Godlief F. Neonufa ◽  
...  

2020 ◽  
Vol 4 (7) ◽  
pp. 3528-3536
Author(s):  
Meng Yang ◽  
Lingjun Zhu ◽  
Yexin Zhuo ◽  
Jiacheng Liang ◽  
Shurong Wang

Y3+, exchanged with the H protons in zeolites, decreased the acid strength of Co/Y-β-x (x = 1, 2, 3, 4) catalysts, which reduced the selectivity of gaseous hydrocarbons (C1–C4) and promoted the generation of JFRHs.


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