Leveling Intermittent Renewable Energy Production Through Biomass Gasification-Based Hybrid Systems

Dean, Jered H.; Braun, Robert J.; Penev, Michael; Kinchin, Christopher; Öz, D.

doi:10.1115/es2010-90067

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…The details of the model can be found in (Dean 2010). The values of biomass feed, oxygen required, water use, and electricity required obtained from this model are consistent with values published in other system simulations studies.…”

Section: Modelingsupporting

confidence: 73%

Analysis of Hybrid Hydrogen Systems: Final Report

Dean¹,

Braun²,

Munoz³

et al. 2010

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Executive SummaryThis project examined biomass pathways for hydrogen production and how they can be hybridized to support renewable electricity generation. The project considered many potential hybrid systems before narrowing the focus to two. The systems were studied in detail for process feasibility and economic performance. The best-performing system was estimated to produce hydrogen at a cost ($1.67/kg) within range of the Department of Energy target for central biomass-derived hydrogen production, while also providing value-added energy services to the electric grid.Of the domestic resources available for hydrogen production, biomass shows significant promise. Recent assessments have shown that more than 400 million tons of biomass currently is available annually in the United States (Milbrandt 2005). This could be converted to roughly 30 million tons of hydrogen by thermochemical processing. Thermochemical plants provide many opportunities for system integration.The project team generated a matrix considering the combination of biomass-processing technologies and how they could be hybridized with other technologies. The matrix contained more than 100 potential binary combinations. These were ranked based on criteria such as resource availability, technology maturity, and hybridization benefits. Some of the top concepts are listed below.Combined wind power and biomass gasification for co-production of fuel and power Combined electrolysis and biomass gasification for co-production of fuel and power Combined coal and biomass/bio-oil gasification systems for co-production of fuel and power with carbon sequestration for both processesCo-location and thermal integration using steam from a nuclear reactor to feed bio-oil reforming to produce fuel These results were further ranked using a decision matrix. Direct wind and wind-electrolyzer combinations with biomass gasification rose to the top of the decision matrix due to several factors. These selections provide renewable fuel and power, supplement grid demand, and also can take up excess electricity. The two concepts chosen for further analysis in this project can be summarized as follows.Direct grid leveling of intermittent wind power with an indirectly heated biomass gasification plant. The plant will produce both electricity and hydrogen.Using an electrolyzer in place of an air separation unit (ASU) with a directly heated fluidized-bed biomass gasifier for co-production of fuel and power.Both of the concepts chosen for further analysis share the basic idea of combining windgenerated electricity with a biomass gasification plant. Wind availability significantly overlaps biomass resource availability, making the use of locally produced wind electricity for gasification feasible. The proposed hybrid systems attempt to do one of two things:iv Fill wind energy shortfalls and feed a natural gas turbine that would be used for this peaking purpose; or Absorb excess renewable power during low-demand hours.The indirect gasification concepts studied could be cost compet...

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Section: Modelingsupporting

confidence: 73%

Analysis of Hybrid Hydrogen Systems: Final Report

Dean¹,

Braun²,

Munoz³

et al. 2010

View full text Add to dashboard Cite

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“…For case-H 2 , the fossil-based emission was taken from Bareiß et al [68], equal to 12.00 kgCO 2 /kgH 2 , which is higher than negative bio-based literature value −19.60 kgCO 2 /kgH 2 from Dean et al [80]. Without CCS, for methanol production, the specific impact is equal to −27.60 kgCO 2 /kgH 2 .…”

Section: Discussionmentioning

confidence: 99%

“…In an environmental impact analysis, the saving from the feedstock is the principal one. Typical savings using biomass as feedstock are 1434 kgCO 2 /t [79] for corn stover, 1456 kgCO 2 /t [80] for cereal straw, and 1597 kgCO 2 /t [57] for the organic fraction of municipal solid waste. For the present work, a value equal to 1643 kgCO 2 /t was used as feedstock savings from Li et al [66].…”

Section: Co2-equivalent Emission Calculationmentioning

confidence: 99%

Valorization of OFMSW Digestate-Derived Syngas toward Methanol, Hydrogen, or Electricity: Process Simulation and Carbon Footprint Calculation

et al. 2020

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This paper explores a possible waste-based economy transition strategy. Digestate from the organic fraction of municipal solid waste (OFMSW) is considered, as well as a low-added value product to be properly valorized. In this regard, air gasification may be used to produce syngas. In this work, the production of methanol, hydrogen, or electricity from digestate-derived syngas was assessed by ChemCAD process simulation software. The process scheme of methanol production comprises the following parts: water gas shift (WGS) with carbon capture and storage units (CCS), methanol synthesis, and methanol purification. In the case of hydrogen production, after WGS-CCS, hydrogen was purified from residual nitrogen by pressure swing absorption (PSA). Finally, for electricity production, the digestate-derived syngas was used as fuel in an internal combustion engine. The main objective of this work is to compare the proposed scenarios in terms of CO2 emission intensity and the effect of CO2 storage. In particular, CCS units were used for methanol or hydrogen production with the aim of obtaining high equilibrium yield toward these products. On the basis of 100 kt/year of digestate, results show that the global CO2 savings were 80, 71, and 69 ktCO2eq/year for electricity, methanol, and hydrogen production, respectively. If carbon storage was considered, savings of about 105 and 99 ktCO2eq/year were achieved with methanol and hydrogen production, respectively. The proposed scenarios may provide an attractive option for transitioning into methanol or hydrogen economy of the future.

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“…Rapidly growing concerns about the emissions of greenhouse gases and the resultant climate change has significantly accelerated the development of renewable energy technologies [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Effects of Swirling Hot Co-Flow on MILD Combustion of a Hydrogen–Methane Blend

Mousavi

Kamali

Sotoudeh

et al. 2020

Journal of Energy Resources Technology

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This paper examines the effects of swirl hot co-flow on the combustion behavior of a moderate or intense low oxygen dilution (MILD) burner fueled by a mixture of methane and hydrogen. Toward this goal, the realizable k-ɛ turbulence model, GRI. 2.11 reaction mechanism, and the discrete ordinates radiation model are incorporated into a computational modeling of the reactive flow. The numerical results are, first, favorably compared against the existing experimental data. Subsequently, a number of swirl co-flows are implemented, and structures of the resultant reactive flows are investigated systematically. The outcomes indicate that increasing the swirl velocity leads to the reduction of ignition delay and significantly enhances the reaction completion. The analysis of the spatial distribution of hydroxyl and formyl (OH and HCO) radicals reveals that swirling MILD combustion radially extends the reaction zone in comparison with the conventional MILD combustion. Yet, it reduces the length of the reactive region and allows for the occurrence of heat release in a shorter axial distance from the outlet fuel nozzle. Further, the addition of swirl reduces the production of carbon monoxide through its influences upon flow temperature and generation of formyl radical. However, it is found that swirling hot co-flow intensifies NOx emissions by strengthening of prompt and thermal mechanisms of NOx production. Reducing the temperature of the recycled flue gas is deemed to be an effective way of resolving this issue.

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Leveling Intermittent Renewable Energy Production Through Biomass Gasification-Based Hybrid Systems

Cited by 5 publications

References 16 publications

Analysis of Hybrid Hydrogen Systems: Final Report

Analysis of Hybrid Hydrogen Systems: Final Report

Valorization of OFMSW Digestate-Derived Syngas toward Methanol, Hydrogen, or Electricity: Process Simulation and Carbon Footprint Calculation

Numerical Investigation of the Effects of Swirling Hot Co-Flow on MILD Combustion of a Hydrogen–Methane Blend

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