Staging and path optimization of Fischer-Tropsch synthesis

Pandey, Umesh; Putta, Koteswara Rao; Rout, Kumar Ranjan; Blekkan, Edd A.; Rytter, Erling; Hillestad, Magne

doi:10.1016/j.cherd.2022.08.033

Cited by 5 publications

(9 citation statements)

References 34 publications

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“…The carbon efficiency for conventional BtL (Case I) is 45.6%. The efficiency could be increased to 57.1% (Case II) by operating at optimal process conditions, as suggested by Pandey et al (2022). Case III has the highest carbon efficiency among the novel BtL process concepts.…”

Section: Carbon Efficiencymentioning

confidence: 97%

“…The key differences lie in the H 2 /CO ratio of the feed and per pass CO conversion in FT synthesis and the introduction of internal recycling in the fuel synthesis process. These parameters are modified based on the path optimization results as described in Pandey et al (2022). The H 2 /CO ratio in the FT reactor feed is set to 1.7, and CO conversion per pass in the reactor is set to 60%.…”

Section: Case IImentioning

confidence: 99%

“…The study considered a 3-stage FT synthesis and used a fraction of H 2 from SOEC to achieve desired H 2 /CO ratio in the 2 nd and 3 rd stages. A prior study by Pandey et al (2022) has shown that operating FT synthesis with internal recycling in two stages with optimal CO conversion of 60% per pass and 96.1% overall CO conversion, optimal H 2 /CO ratio of 1.7, and optimal operating temperature of 210.6 °C is economically beneficial. This study incorporates the recommendation of optimization study along with SOEC integration.…”

Section: Novel Biomass To Liquid Process With Solid Oxide Electrolyze...mentioning

confidence: 99%

“…Heat transfer is a critical factor in the design of FT reactors, especially fixed bed reactors. The current study considers reactor tubes of 1-inch diameter and 10 m in length, and the overall heat transfer rate is assumed to be 400 W/m 2 K. The value here is similar to the one used in the same author's optimization study of FT synthesis (Pandey et al, 2022). In addition, the recommendation of the optimization study is utilized in the current study to achieve improved performance over the FT synthesis.…”

Section: Frontiers In Energy Researchmentioning

confidence: 99%

“…The proposed improvements consider different process alternatives related to SOEC integration and excess CO 2 handling. In addition, the process recommendation of the optimization study by Pandey et al (2022) is utilized to optimize the syncrude production in the FT synthesis. The current study aims to outline potential routes for biofuel production utilizing two process concepts (six different process routes in total) and estimate the economic viability for variability in the electricity prices and SOEC costs.…”

Section: Introductionmentioning

confidence: 99%

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Conceptual design and techno-economic analysis of biomass to liquid processes

et al. 2022

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Advanced biofuels are produced by upgrading the syncrude from biomass gasification and subsequent Fischer-Tropsch (FT) synthesis. The technology is termed biomass to liquid process (BtL) and can be categorized into conventional BtL and novel BtL processes. The conventional BtL utilizes a water gas shift reaction, while novel BtL utilizes an external energy source to meet H2 demand in FT synthesis. Six different process routes, two based on the conventional BtL and four based on novel BtL with solid oxide electrolyzer cell (SOEC) integration, are developed and evaluated based on the process performance and economic viability. The results show that the novel BtL technology can retain up to 96% of carbon in the biomass (up from 46% in the conventional BtL process), and syncrude production is increased by a factor of 2.4 compared to the conventional BtL process. The economic analysis shows that SOEC costs and electricity prices are critical for the viability of the novel BtL plants. For current electrical power and SOEC cost, optimizing the conventional BtL process offers the best process route for producing advanced biofuels (minimum selling price of syncrude (MSP): $1.73/L). Further improvement in SOEC technology could see a dramatic drop in SOEC costs. With a reduced SOEC installation cost of $230/kW, directly adding SOEC-H2 in FT synthesis and recycling excess CO2 offers the best route for syncrude production. For this SOEC cost, the MSP is estimated to be $1.38/L, 20% lower than the MSP for the optimized conventional BtL process.

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Section: Carbon Efficiencymentioning

confidence: 97%

Section: Case IImentioning

confidence: 99%

Section: Novel Biomass To Liquid Process With Solid Oxide Electrolyze...mentioning

confidence: 99%

Section: Frontiers In Energy Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Conceptual design and techno-economic analysis of biomass to liquid processes

et al. 2022

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How to Survive at Point Nemo? Fischer–Tropsch, Artificial Photosynthesis, and Plasma Catalysis for Sustainable Energy at Isolated Habitats

Levchenko,

Xu,

Baranov

et al. 2023

Global Challenges

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Inhospitable, inaccessible, and extremely remote alike the famed pole of inaccessibility, aka Point Nemo, the isolated locations in deserts, at sea, or in outer space are difficult for humans to settle, let alone to thrive in. Yet, they present a unique set of opportunities for science, economy, and geopolitics that are difficult to ignore. One of the critical challenges for settlers is the stable supply of energy both to sustain a reasonable quality of life, as well as to take advantage of the local opportunities presented by the remote environment, e.g., abundance of a particular resource. The possible solutions to this challenge are heavily constrained by the difficulty and prohibitive cost of transportation to and from such a habitat (e.g., a lunar or Martian base). In this essay, the advantages and possible challenges of integrating Fischer–Tropsch, artificial photosynthesis, and plasma catalysis into a robust, scalable, and efficient self‐contained system for energy harvesting, storage, and utilization are explored.

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