Comprehensive Model of Single Particle Pulverized Coal Combustion Extended to Oxy-Coal Conditions

Holland, Troy; Fletcher, Thomas H.

doi:10.1021/acs.energyfuels.6b03387

Comprehensive Model of Single Particle Pulverized Coal Combustion Extended to Oxy-Coal Conditions

Journal Article · Wed Feb 22 00:00:00 EST 2017 · Energy and Fuels

DOI:https://doi.org/10.1021/acs.energyfuels.6b03387· OSTI ID:1352378

Holland, Troy ^[1]; ^[1]

Brigham Young Univ., Provo, UT (United States). Chemical Engineering Dept.

Oxy-fired coal combustion is a promising potential carbon capture technology. Predictive CFD simulations are valuable tools in evaluating and deploying oxy-fuel and other carbon capture technologies either as retrofit technologies or for new construction. But, accurate predictive simulations require physically realistic submodels with low computational requirements. In particular, comprehensive char oxidation and gasification models have been developed that describe multiple reaction and diffusion processes. Our work extends a comprehensive char conversion code (CCK), which treats surface oxidation and gasification reactions as well as processes such as film diffusion, pore diffusion, ash encapsulation, and annealing. In this work several submodels in the CCK code were updated with more realistic physics or otherwise extended to function in oxy-coal conditions. Improved submodels include the annealing model, the swelling model, the mode of burning parameter, and the kinetic model, as well as the addition of the chemical percolation devolatilization (CPD) model. We compare our results of the char combustion model to oxy-coal data, and further compared to parallel data sets near conventional conditions. A potential method to apply the detailed code in CFD work is given.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Utah, Salt Lake City, UT (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-06NA25396; NA0002375

OSTI ID:: 1352378

Alternate ID(s):: OSTI ID: 1362069

Report Number(s):: DOE-UTAH--DENA0002375-FLETCHER-0005; LA-UR--16-29489

Journal Information:: Energy and Fuels, Journal Name: Energy and Fuels Journal Issue: 3 Vol. 31; ISSN 0887-0624

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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