Kinetic Mechanism and Experimental Study of Initial Temperature and Blended Gas Addition on Combustion Characteristics of Coal Bed Methane-Air

Combustion Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 18

Published: Jan. 11, 2025

Coal bed methane (CBM) is a clean energy resource, CH4 and various blends of C2H6, C2H4, CO, H2 in different proportions were chosen to formulate surrogate fuel for coal methane. The objective was study the explosion characteristics while alleviating computational complexity associated with intricate reaction mechanisms. properties (peak pressure (Pmax) maximum rise rate (dp/dt)max) mixtures tested. unstretched laminar burning velocity (Ul) components determined under range initial temperatures (Tu) (298–373 K) blended concentrations (0.4–2.0%). Two simplified kinetics models developed using GRI Mech 3.0 USC II These constructed through application direct relation graph error propagation (DRGEP) full species sensitivity analysis (FSSA). To assess accuracy models, simulations based on these mechanisms compared both detailed mechanism experimental data. Additionally, analyses, utilizing mechanism, conducted order identify precisely reactions that govern interaction dynamics between Within conditions, results indicated Pmax decreased linearly increasing temperature. (dp/dt)max only slightly sensitive variation However, Ul increased temperature, as expected. When added 7% CH4-air mixture, Pmax, (dp/dt)max, exhibited trends. An equation derived data, forecast changes across elevated gas concentrations. model successfully replicated demonstrated good agreement data concerning concentrations, ignition delay times, fuel. Compared sample 2, chemistry 1 exhibits greater toward intermediate temperature reactions, particularly at higher temperatures.

Language: Английский

---

Experimental Investigation on Inhibiting Effects and Mechanisms of Ammonium Dihydrogen Phosphate on Coal Dust Explosion

Combustion Science and Technology, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 22

Published: Feb. 15, 2025

Language: Английский

---

Investigation on the deflagration inhibition effects of potassium salt-modified dry water on CH4/air mixture

Journal of Loss Prevention in the Process Industries, Journal Year: 2025, Volume and Issue: unknown, P. 105616 - 105616

Published: March 1, 2025

Language: Английский

---

Evolution of ammonia/air premixed flame and explosion pressure in a square closed duct: Effects of equivalence ratio and initial pressure

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 59, P. 419 - 429

Published: Feb. 8, 2024

Language: Английский

---

Deflagration characteristics of N2 diluted propanal/air mixtures at elevated pressures

Combustion and Flame, Journal Year: 2024, Volume and Issue: 265, P. 113491 - 113491

Published: May 9, 2024

Language: Английский

---

Flame propagation mechanism of methanol fuel spray explosion in a square closed vessel

Journal of Loss Prevention in the Process Industries, Journal Year: 2024, Volume and Issue: 91, P. 105408 - 105408

Published: Aug. 14, 2024

Language: Английский

---

Phase change materials as hydrogen explosion suppressants: An experimental and kinetic investigation

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156996 - 156996

Published: Oct. 1, 2024

Language: Английский

---

Optimizing heat transfer predictions in HCNG engines: A novel model validation and comparative study via quasi-dimensional combustion modeling and artificial neural networks

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 83, P. 1263 - 1281

Published: Aug. 16, 2024

Language: Английский

---

Investigation of scaling-down experiments for accidental CO2 leakage dispersion risks in constant-pressure transportation pipelines within the CCUS process

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 190, P. 746 - 759

Published: Aug. 23, 2024

Language: Английский

---

Hydrogen-ammonia-air flame acceleration and explosion overpressure generation in a horizontal closed obstructed duct

Renewable Energy, Journal Year: 2024, Volume and Issue: unknown, P. 122226 - 122226

Published: Dec. 1, 2024

Language: Английский

---