Continuous power supply from a baseload renewable power plant

Al‐musleh, Easa I.; Mallapragada, Dharik S.; Agrawal, Rakesh

doi:10.1016/j.apenergy.2014.02.015

Cited by 45 publications

(10 citation statements)

References 34 publications

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“…For enabling augmented biofuel production using intermittent solar energy, any combination of the following storage options could be used: (1) during the periods when solar energy is available (day time), it is stored in a suitable form to supply heat and H 2 at other times or (2) during the periods when solar energy is unavailable (night time), the unconverted carbon (e.g., char or gas) is stored for subsequent conversion to liquid fuel. Recently, a high efficiency energy and carbon storage concept based on the cyclic transformation between carbon dioxide and carbonaceous molecules like methane was proposed for uninterrupted renewable power generation . This storage concept can be adapted for round the clock augmented biofuel production, as shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Modeling results for the process of Figure will be presented in a subsequent publication. A key aspect of the process is the choice of carbonaceous molecule and its impact on the supplemental solar energy consumption …”

Section: Resultsmentioning

confidence: 99%

“…If this flexibility in process carbon recovery can be attained without start‐up and shutdown of units, then the process can be operated continuously even if cost‐effective solar energy storage methods are not available. Alternatively, the identified augmented biofuel processes can operate round the clock by integrating with renewable energy storage systems . In a transition scenario, coal and natural gas can supplement biomass during times of solar energy unavailability …”

Section: Introductionmentioning

confidence: 99%

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Synthesis of augmented biofuel processes using solar energy

Mallapragada

Tawarmalani

2014

AIChE Journal

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A method for synthesizing augmented biofuel processes, which improve biomass carbon conversion to liquid fuel (g carbon ) using supplemental solar energy as heat, H 2 , and electricity is presented. For a target g carbon , our method identifies augmented processes requiring the least solar energy input. A nonconvex mixed integer nonlinear programming model allowing for simultaneous mass, heat, and power integration, is built over a process superstructure and solved using global optimization tools. As a case study, biomass thermochemical conversion via gasification/Fischer-Tropsch synthesis and fast-hydropyrolysis/hydrodeoxygenation (HDO) is considered. The optimal process configurations can be categorized either as standalone (g carbon 54%), augmented using solar heat (54% g carbon 74%), or augmented using solar heat and H 2 (74 g carbon 95%). Importantly, the process H 2 consumption is found to be close to the derived theoretical minimum values. To accommodate for the intermittency of solar heat/H 2 , we suggest processes that can operate at low and high g carbon .All the flow rates are normalized to 1 kmol/h of biomass carbon feed processed. Multiple values (separated by commas) considered for certain parameters.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of augmented biofuel processes using solar energy

Mallapragada

Tawarmalani

2014

AIChE Journal

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“…The intermittency associated with solar and wind energy can be addressed on the process scale by developing chemical storage systems 104,105 or macroscale in integrated fossil/nonfossil supply chain systems. 106 The macroscale systems of this type generally consist of a solar, wind, and fossil fuel component for design, simulation, and optimization purposes.…”

Section: Solar and Windmentioning

confidence: 99%

Multi‐scale systems engineering for energy and the environment: Challenges and opportunities

et al. 2016

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“…Hence, the heat flows within the loops were being integrated except for the dehydrogenation, as it demands heat at 1073 K and no other unit operation generates heat at that temperature. The minimum cooling duty can further reduce the electricity consumption through the means of co-generation [45,46]. Using the heating and cooling utilities prior to heat integration, the process thermal efficiency was calculated and shown in Table 4.…”

Section: Energy Integrationmentioning

confidence: 99%

Valorization of Shale Gas Condensate to Liquid Hydrocarbons through Catalytic Dehydrogenation and Oligomerization

Ridha

Gençer

et al. 2018

Processes

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Abstract:The recent shale gas boom has transformed the energy landscape of the United States. Compared to natural gas, shale resources contain a substantial amount of condensate and natural gas liquids (NGLs). Many shale basin regions located in remote areas are lacking the infrastructure to distribute the extracted NGLs to other regions-particularly the Gulf Coast, a major gas processing region. Here we present a shale gas transformation process that converts NGLs in shale resources into liquid hydrocarbons, which are easier to transport from these remote basins than NGL or its constituents. This process involves catalytic dehydrogenation followed by catalytic oligomerization. Thermodynamic process analysis shows that this process has the potential to be more energy efficient than existing NGL-to-liquid fuel (NTL) technologies. In addition, our estimated payback period for this process is within the average lifetime of shale gas wells. The proposed process holds the promise to be an energy efficient and economically attractive step to valorize condensate in remote shale basins.

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Continuous power supply from a baseload renewable power plant

Cited by 45 publications

References 34 publications

Synthesis of augmented biofuel processes using solar energy

Synthesis of augmented biofuel processes using solar energy

Multi‐scale systems engineering for energy and the environment: Challenges and opportunities

Valorization of Shale Gas Condensate to Liquid Hydrocarbons through Catalytic Dehydrogenation and Oligomerization

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