Biomass as a reburning fuel: a specialized cofiring application

Harding, N. Stanley; Adams, Brent L.

doi:10.1016/s0961-9534(00)00054-4

Cited by 104 publications

(68 citation statements)

References 10 publications

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“…The most popular reburning fuel is natural gas, used in reburning of coal combustion in boilers, but alternative fuels offer potential cost and performance advantages. These alternative fuels include biomass, pulverised coal, coal water slurry (CWS), carbonised refuse derived fuel (CRDF) and Orimulsion (Harding and Adams, 2000;Maly et al, 1999), mixed fuel containing scrap tire and Fe 2 O 3 (Su et al, 2010), and syngas produced by the gasification of sewage sludge (Gross et al, 2008;. Current scientific research is based not only on experimental studies performed in laboratories with modern testing equipment, but also on computer simulations.…”

Section: Low-emission Methods Of No X Reduction-reburning Processmentioning

confidence: 99%

Syngas as a Reburning Fuel for Natural Gas Combustion

Wilk¹,

Magdziarz²,

Zajemska³

et al. 2014

Chemical and Process Engineering

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The paper aims to confirm the syngas application as a reburning fuel to reduce e.g. NO emission during natural gas combustion. The main aim of this modelling work was to predict pollutants generated in the exhaust gases and to indicate the influence of the syngas on the natural gas combustion process. The effect of residence time of fuel-air mixture was also been performed. Calculations were made with CHEMIKN-PRO for reburning process using syngas. The boundary conditions of the reburning process were based on experimental investigations. The addition of 5, 10, 15 and 19% of reburning fuel into natural gas combustion was studied. The effects of 0.001 to 10 s of residence time and the addition of 5, 10, and 15% of syngas on combustion products were determined. The performed numerical tests confirmed that co-combustion of the natural gas with syngas (obtained from sewage sludge gasification) in the reburning process is an efficient method of NO x reduction by c.a. 50%. Syngas produced from sewage sludge can be utilised as a reburning fuel.

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Section: Low-emission Methods Of No X Reduction-reburning Processmentioning

confidence: 99%

Syngas as a Reburning Fuel for Natural Gas Combustion

Wilk¹,

Magdziarz²,

Zajemska³

et al. 2014

Chemical and Process Engineering

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“…A critical issue is how the biomass and coal are introduced into the boiler (32,33); for example, use of biomass as a reburn fuel can reduce NOx emissions by 60% or more (33). Reburning is a combustion modification that reduces NOx by injecting a fuel such as biomass downstream of the primary coal combustion zone (33). The reburn fuel (biomass in the case of cofiring) acts as a reducing agent for the NOx formed in the primary combustion zone.…”

Section: Technical Feasibilitymentioning

confidence: 99%

Assessment of Potential Carbon Dioxide Reductions Due to Biomass−Coal Cofiring in the United States

Robinson

2003

Environ. Sci. Technol.

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Cofiring biomass with coal in existing power plants offers a relatively inexpensive and efficient option for increasing near-term biomass energy utilization. Potential benefits include reduced emissions of carbon dioxide, sulfur, and nitrogen oxides and development of biomass energy markets. To understand the economics of this strategy, we develop a model to calculate electricity and pollutant mitigation costs with explicit characterization of uncertainty in fuel and technology costs and variability in fuel properties. The model is first used to evaluate the plant-level economics of cofiring as a function of biomass cost. It is then integrated with state-specific coal consumption and biomass supply estimates to develop national supply curves for cofire electricity and carbon mitigation. A delivered cost of biomass below $15 per ton is required for cofire to be competitive with existing coal-based generation. Except at low biomass prices (less than $15 per ton), cofiring is unlikely to be competitive for NO x or SO x control, but it can provide comparatively inexpensive control of CO 2 emissions: we estimate that emissions reductions of 100 Mt-CO 2 /year (a 5% reduction in electric-sector emissions) can be achieved at 25 ( 20 $/tC. The 2-3 year time horizon for deploymentscompared with 10-20 years for other CO 2 mitigation optionssmakes cofiring particularly attractive.

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“…Sawdust is an opportunity fuel that could potentially reduce the cost of plant operation. Based on biomass cofiring studies, the use of sawdust could provide additional NOx reductions but might require a redesign effort to optimize the injection of the reburn fuel into the furnace [Harding and Adams, 2000]. …”

Section: Lebs-poc Steady-state Demonstrationmentioning

confidence: 99%

A Computational Workbench Environment for Virtual Power Plant Simulation

Bockelie¹,

Swensen²,

Denison³

et al. 2004

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In this report is described the work effort to develop and demonstrate a software framework to support advanced process simulations to evaluate the performance of advanced power systems. Integrated into the framework are a broad range of models, analysis tools, and visualization methods that can be used for the plant evaluation. The framework provides a tightly integrated problem-solving environment, with plug-and-play functionality, and includes a hierarchy of models, ranging from fast running process models to detailed reacting CFD models. The framework places no inherent limitations on the type of physics that can be modeled, numerical techniques, or programming languages used to implement the equipment models, or the type or amount of data that can be exchanged between models. Tools are provided to analyze simulation results at multiple levels of detail, ranging from simple tabular outputs to advanced solution visualization methods. All models and tools communicate in a seamless manner. The framework can be coupled to other software frameworks that provide different modeling capabilities.Three software frameworks were developed during the course of the project. The first framework focused on simulating the performance of the DOE Low Emissions Boiler System Proof of Concept facility, an advanced pulverized-coal combustion-based power plant. The second framework targeted simulating the performance of an Integrated coal Gasification Combined Cycle -Fuel Cell Turbine (IGCC-FCT) plant configuration. The coal gasifier models included both CFD and process models for the commercially dominant systems. Interfacing models to the framework was performed using VES-Open, and tests were performed to demonstrate interfacing CAPE-Open compliant models to the framework. The IGCC-FCT framework was subsequently extended to support Virtual Engineering concepts in which plant configurations can be constructed and interrogated in a three-dimensional, user-centered, interactive, immersive environment. The Virtual Engineering Framework (VEF), in effect a prototype framework, was developed through close collaboration with NETL supported research teams from Iowa State University Virtual Reality Applications Center (ISU-VRAC) and Carnegie Mellon University (CMU). The VEF is open source, compatible across systems ranging from inexpensive desktop PCs to large-scale, immersive facilities and provides support for heterogeneous distributed computing of plant simulations. The ability to compute plant economics through an interface that coupled the CMU IECM tool to the VEF was demonstrated, and the ability to couple the VEF to Aspen Plus, a commercial flowsheet modeling tool, was demonstrated. Models were interfaced to the framework using VES-Open. Tests were performed for interfacing CAPE-Open-compliant models to the framework. Where available, the developed models and plant simulations have been benchmarked against data from the open literature. The VEF has been installed at NETL.The VEF provides simulation capabilities not availab...

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Biomass as a reburning fuel: a specialized cofiring application

Cited by 104 publications

References 10 publications

Syngas as a Reburning Fuel for Natural Gas Combustion

Syngas as a Reburning Fuel for Natural Gas Combustion

Assessment of Potential Carbon Dioxide Reductions Due to Biomass−Coal Cofiring in the United States

A Computational Workbench Environment for Virtual Power Plant Simulation

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