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| Title | Date | Subject | Description | ||
|---|---|---|---|---|---|
| 1 |
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Texas progress in flaring - 6 years of emissions data 2015 through 2020 | 2020 | Following nearly a decade of flare performance inquiry, modeling, and testing in the early 2000s, new United States Environmental Protection Agency (USEPA) flare regulations have been enacted for the petroleum refinery sector in 2012 and 2015. The stated objective of these new regulations was th... | |
| 2 |
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Hardening of arches for commercial simulation of industrial flares: a program update | Reaction Engineering International (REI) is working with the University of Utah to leverage the Uintah Computational Framework (UCF) for commercial simulation of industrial flares, with funding from the Department of Energy (DOE). The Arches component of the UCF provides a reacting large eddy simula... | ||
| 3 |
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Explaining the "three inch rule": why model flares don't match full-scale | 2022 | It was Pohl and co-workers who discovered the so-called "Three Inch Rule" in their work on flares in the 1980s. They found that model flares with pipe diameter less than three inches do not have the same Combustion Efficiency (CE) and stability behaviour as full-scale flares, at least when wind is n... | |
| 4 |
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CFD development for fired heater applications | 2022 | Industry values the ability to ‘virtually' verify and optimize burner performance through CFD simulation and to evaluate the suitability of burner and furnace designs. Inaccurate results may lead us to falsely reject good burner designs or accept a poor design. Field problems can be far more expen... | |
| 5 |
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Investigative approach to address thermoacoustic vibration in gas-fired heaters and boilers | 2022 | Industrial gas-fired boilers, furnaces and heaters occasionally encounter low-frequency vibrations generated by dynamic feedback between the burner (or burners) and acoustic modes in adjacent cavities in the main combustion chamber or ductwork. Feedback occurs when pressure pulses associated with ac... | |
| 6 |
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Capturing the effect of near-and far-field dynamics on the combustion efficiency of multi-point ground flares | 2022 | Multi-point ground flares are frequently used in scenarios where flare gas flow rates can be high and pollution (noise, light, smoke) needs to be minimized. We have applied Arches, a large eddy simulation (LES) tool that we have developed for capturing the dynamics of flares (turbulent mixing, local... | |
| 7 |
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A bayesian decision-theory-based digital twin for methane flares | 2022 | Ground flares operate in a high-turndown, standby configuration for a significant portion of their operating life, being fully utilized only under process upset scenarios or emergencies. The low-momentum flow results in poor fuel-air mixing near the flare tip, leading to decreased overall combustion... | |
| 8 |
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A chemical kinetics approach for heavy fuel oils gasification modelling | 2022 | surrogate; HFOs; pyrolysis; chemical kinetics modeling; Gassification | Refinery oil residue commonly considered the bottom of the barrel, can no longer be a waste. The increasing energy demand and the constant depletion of light oil supply make it crucial to find a suitable way to convert residual oils into valuable fuels. The gasification process represents a possible... |
| 9 |
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3D CFD model development and validation for once-through steam generator (OTSG): coupling combustion, heat transfer | The current research studies the coupled combustion inside the furnace and the steam generation inside the radiant and convection tubes through a typical Once-Through Steam Generator (OTSG). A 3D CFD model coupling combustion and two-phase flow was developed to model the entire system of OTSG. Once ... | ||
| 10 |
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Effect of operating parameters on fired heater tube skin temperature measurement accuracy & the development of new improved tube skin thermocouple | 2022 | Refineries are often faced with challenges to meet production target, improve efficiency, process opportunity crudes with limited information on fouling characteristics etc. The common parameter that often becomes constraining are the tube skin temperatures which are critical in maintaining the inte... | |
| 11 |
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Reduced order model of a lime kiln for fuel switching | The lime kiln is an essential part of the causticizing loop in the kraft pulp mill. It is also the last operating unit that routinely fires fossil fuels like natural gas and fuel oil. Displacing these fossil fuels with biomass like bark or sawdust is done, as is firing lignin extracted from black li... | ||
| 12 |
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Firing of liquid bio-derived fuels for decarbonization of high temperature industrial heating processes | Recent commitments to CO2/Green-House Gas emissions reductions by governmental, NGO and industrial corporations require that new energy sources be found to replace fossil fuels. While some are envisioning ‘The Electrification of Everything,' High temperature industrial heating processes have been ... | ||
| 13 |
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Modeling sulfur-Nitrogen chemistry indside a claus reaction furnace | This paper describes a CFD analysis of a Sulfur Recovery Unit (SRU) considering transient turbulent reacting flow inside the SRU. Often, the SRU feedstock includes hydrocarbons together with nitrogen and sulfur species, which react with oxygen in the air to form various emissions including SO2, NH3 ... | ||
| 14 |
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A comprehensive parametric investigation of efficient soot modeling using high fidelity method of moments | PSD; PAH; nucleation; Soot; Radiation; Method of moment | Soot is one of the most regulated pollutants in all the combustion applications like automotive engines, aviation engines, and industrial furnaces. Modeling soot formation is quite challenging due to the complex processes involved in the formation of the soot particulates. Empirical formulation base... | |
| 15 |
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Model-based design and full-scale demonstration of an oxy-coal firing system with undiluted oxygen and minimal flue gas recycle | The future use of coal as a fuel for industrial applications depends on economical technologies being made available to capture and store the CO2 emitted as a product of the combustion process. One such technology is oxy-combustion, which involves burning of the fuel using pure oxygen as the oxidant... | ||
| 16 |
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Decarbonizing: the future of hydrogen firing | Historically, firing hydrogen fuel was only economical in certain applications outside of the power industry. Unlike other fossil fuels, hydrogen does not naturally exist as H2 and is commonly produced in hydrogen reformers and considered an energy carrier and not an energy source. Steam-methane ref... | ||
| 17 |
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Quantifying flare combustion efficiency using an imaging fourier transform spectrometer | 2022 | Mid-wavelength infrared (MWIR) hyperspectral imaging may be used to calculate the flare combustion efficiency from standoff measurements, without requiring any information about the fuel flow rate to the flare. Species column densities are found using a spectroscopic model, which is combined with a ... | |
| 18 |
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Analysis of design and operation of multi-point ground flares | 2022 | Multi-point ground flares (MPGF) are used to process large quantities of hydrocarbon gases generated in chemical processing or petrochemical refining. These flares use hundreds of flare burners arranged and fired in a staged fashion. A wind fence surrounds the MPGF to shield the flames from plant op... | |
| 19 |
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Computational study of the anode baking industrial furnace | Turbulent flow; Eddy dissipation model; Combustion, NOx; Zeldovich mechanism | In the aluminium industry, the Hall-Héroult process is used for smelting of aluminium using carbon electrodes such as anodes. The baking process of anodes is required for their maximum efficiency during this electrolysis process. The anode baking process contributes up to 15% costs in the aluminium... | |
| 20 |
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Analysis of burner operation inside an enclosed ground flare | 2022 | Thermo-Acoustic Coupling; Enclosed Flare; LES CFD Model; Noise; Premixed Burner | An industrial enclosed ground flare used as part of a large refinery project has been analyzed to assess combustion stability and performance under low and high flow conditions. This flare includes a large combustion chamber directly above the burner deck with Low Flow (LF) burners that fire up to 9... |
| 21 |
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Using numberical simulation to diagnose boiler tube failures | A VU-60 type boiler has been commissioned in 1999 for a water desalinization plant. It is used for the production of 369 tonne/hr of saturated steam at pressure of 22 barg. Natural gas is fired through six front fired burners which can be adjusted in the field to obtain an appropriate flame shape fo... | ||
| 22 |
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Ammonia for industrial combustion | ammonia combustion; hydrogen; methane | Many companies are investigating switching from conventional fossil fuels to "green" fuels such as hydrogen to reduce CO2 emissions. This assumes hydrogen is made by an environmentally-friendly method such as electrolysis using renewable energy. However, there are concerns with hydrogen. For example... | |
| 23 |
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Radiant wall burner design improvements for retrofit applications | This paper explores solutions to challenging radiant wall burner retrofit applications. For example, a significant challenge facing the combustion industry today is being able to bring old technology into compliance with new regulations without sacrificing performance. Many existing radiant wall bur... | ||
| 24 |
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A volume of fluid approach to model injection of highly viscous fluids | 2022 | Despite the transition to renewable energy sources, fossil fuels will still play a significant role in satisfying the world's energy needs shortly. In addition, the rise in the demand for light distillates and the depletion of light crude oil reservoirs are shifting the interest toward the conversio... | |
| 25 |
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Clearn combustion, a path to net zero | Use of fossil fuels as the major source of energy is one of the main sources of GHG emissions that contribute to global warming. However, for at least a foreseeable future, the world will still continue to rely on fossil fuels to sustain the economy and the quality of life. IEA is evaluating the pat... |