A technical and economic evaluation of two different oxygen sources for a small oxy-combustion unit

Šulc, Radek; Ditl, Pavel

doi:10.1016/j.jclepro.2021.127427

Cited by 12 publications

(7 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The expected accuracy of this methodology for capital cost estimation is between −30% to +50%, but scaling by more than a factor of two may increase the error margin. Capital cost estimates are based on values reported in literature 51–55 and ProSim economic evaluation. A reduced order model of the CAPEX is presented in Table 2.…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, an exponent of 0.9 is used to account for cost reduction when multiple units of the same equipment are purchased and installed. The expected accuracy of this methodology for capital cost estimation is between À30% to +50%, but scaling by more than a factor of two may increase the error [51][52][53][54][55] and ProSim economic evaluation. A reduced order model of the CAPEX is presented in Table 2.…”

Section: Economicsmentioning

confidence: 99%

See 1 more Smart Citation

Green steel: design and cost analysis of hydrogen-based direct iron reduction

Rosner,

Papadias,

Brooks

et al. 2023

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Economicsmentioning

confidence: 99%

Green steel: design and cost analysis of hydrogen-based direct iron reduction

Rosner,

Papadias,

Brooks

et al. 2023

Energy Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The alternative cost method adopted for the value of oxygen release is as follows:

where

represents the carbon sink capacity of algae (t/year),

represents the mass conversion coefficient of carbon and oxygen (32/12), and

represents the cost of industrial oxygen production (USD/t), which is calculated according to the oxygen production cost of PSA oxygen production equipment (USD 122/t) [ 31 ].…”

Section: Methodsmentioning

confidence: 99%

Current and Future Potential of Shellfish and Algae Mariculture Carbon Sinks in China

Lai

et al. 2022

IJERPH

View full text Add to dashboard Cite

Shellfish and algae mariculture make up an important part of the marine fishery carbon sink. Carbon sink research is necessary to ensure China achieves its goal of carbon neutrality. This study used the material quality assessment method to estimate the carbon sink capacity of shellfish and algae. Product value, carbon storage value, and oxygen release value were used to calculate the economic value of shellfish and algae carbon sequestration. The results showed that the annual average shellfish and algae carbon sink in China was 1.10 million tons from 2003 to 2019, of which shellfish accounted for 91.63%, wherein Crassostreagigas, Ruditapesphilippinarum, and Chlamysfarreri were the main contributors. The annual average economic value of China’s shellfish and algae carbon sequestration was USD 71,303.56 million, and the product value was the main contributor, accounting for 99.11%. The carbon sink conversion ratios of shellfish and algae were 8.37% and 5.20%, respectively, thus making shellfish the aquaculture species with the strongest carbon sink capacity and the greatest carbon sink potential. The estimated growth rate in the shellfish and algae removable carbon sink was 33,900 tons/year in China, but this trend was uncertain. The capacity for carbon sequestration and exchange by aquaculture can be improved by expanding breeding space, promoting multi-level comprehensive breeding modes, and marine artificial upwelling projects.

show abstract

“…The expected accuracy of this methodology for cost estimation is between -30% to +50%, but scaling by more than a factor of two may increase the error margin. Capital cost estimates are based on values reported in literature [50][51][52][53][54] and ProSim economic evaluation. A reduced order model of the CAPEX is presented in Table 3.…”

Section: Economicsmentioning

confidence: 99%

Green steel: design and cost analysis of hydrogen-based direct iron reduction

Rosner

Papadias

Brooks

et al. 2023

Preprint

View full text Add to dashboard Cite

Hydrogen-based direct reduced iron (H2-DRI) is an alternative pathway for low-carbon steel production. Yet, the lack of established process and business models defining “green steel” make it difficult to understand what the respective H2 price has to be in order to be competitive with commercial state-of-the-art natural gas DRI. Given the importance of establishing break-even H2 prices and CO2 emission reduction potentials of H2-DRI, this study conducted techno-economic analyses of several design and operation scenarios for DRI systems. Results show that renewable H2 use in integrated DRI steel mills for both heating and the reduction of iron ore can reduce direct CO2 emissions by as much as 85%, but would require an H2 procurement cost of $1.63 per kg H2 or less. When using H2 only for iron ore reduction, economic viability is reached at an H2 procurement cost of $1.70 per kg, while achieving a CO2 emission reduction of 76% at the plant site. System design optimization strategies around excess H2 ratios in the DRI top gas and the H2 recycle pressurization can further improve performance and economics. Low H2 excess ratios are particularly attractive as they reduce pre-heating energy requirements and offer integration opportunities with static recycle ejectors if H2 is supplied at sufficiently high pressure. The potential of utilizing the EAF off-gas is shown to be much more synergistic with H2 DRI than NG DRI and can increase the break-even H2 procurement cost by up to 7¢ per kg H2. Such findings are critical for setting technical performance criteria for H2 supply and storage in the iron and steel sector.

show abstract

A technical and economic evaluation of two different oxygen sources for a small oxy-combustion unit

Cited by 12 publications

References 27 publications

Green steel: design and cost analysis of hydrogen-based direct iron reduction

Green steel: design and cost analysis of hydrogen-based direct iron reduction

Current and Future Potential of Shellfish and Algae Mariculture Carbon Sinks in China

Green steel: design and cost analysis of hydrogen-based direct iron reduction

Contact Info

Product

Resources

About