Impact of SO2 and NO on CO oxidation under post-flame conditions

Glarborg, Peter; Kubel, D.; Dam‐Johansen, Kim; Chiang, Hong-Ming; Bozzelli, Joseph W.

doi:10.1002/(sici)1097-4601(1996)28:10<773::aid-kin8>3.0.co;2-k

Cited by 141 publications

(139 citation statements)

References 16 publications

Supporting

Mentioning

128

Contrasting

Order By: Relevance

“…The entrained flow reactor (EFR) structure is similar to those used in DTU (Technical University of Denmark), described elsewhere in detail [24]. EFR is applied to investigate the effect of HCl on CO and NO emission during gas reaction.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of HCl on CO and NO emissions in combustion

Wei¹,

Wang²,

Dian-fu³

et al. 2009

Fuel

View full text Add to dashboard Cite

a b s t r a c tThe influence of HCl on CO and NO emissions was experimentally investigated in an entrained flow reactor (EFR) and an internally circulating fluidized bed (ICFB). The results in EFR show the addition of HCl inhibits CO oxidation and NO formation at 1073 K and 1123 K. At the lower temperature (1073 K) the inhibition of HCl becomes more obvious. In ICFB, chlorine-containing plastic (PVC) was added to increase the concentration of HCl during the combustion of coal or coke. Results show that HCl is likely to enhance the reduction of NO and N 2 O. HCl greatly increases CO and CH 4 emission in the flue gas. A detailed mechanism of CO/NO/HCl/SO 2 system was used to model the effect of HCl in combustion. The results indicate that HCl not only promotes the recombination of radicals O, H, and OH, but also accelerates the chemical equilibration of radicals. The influence of HCl on the radicals mainly occurs at 800-1200 K.

show abstract

Section: Methodsmentioning

confidence: 99%

“…SO 2 emission is approximately 350 mg/Nm 3 for coke and 250 mg/Nm 3 for coal. SO 2 also may affect the oxidation of CO and the formation of NO x [24,[27][28]. However, Fig.…”

Section: Coal/char Combustion Experiments In Icfbmentioning

confidence: 96%

Influence of HCl on CO and NO emissions in combustion

Wei¹,

Wang²,

Dian-fu³

et al. 2009

Fuel

View full text Add to dashboard Cite

show abstract

“…One possible interaction between carbon and sulfur species is the inhibition of CO oxidation by SO 2 [30,31,63,64]. The combined mechanism can capture the inhibiting effect of SO 2 on CO oxidation at stoichiometric conditions observed by Giménez-López et al [63] both in a nitrogen (N 2 ) bath and in the presence of CO 2 (see Fig.…”

Section: Validation: Interactions Between Ch 4 and H 2 Smentioning

confidence: 89%

“…Sulfur oxidation chemistry is far less well established than hydrocarbon chemistry, but there has been a growing interest in the topic in recent years and a number of detailed reaction mechanisms have been proposed, including the work of Frenklach et al [29]; Glarborg et al [30]; Alzueta et al [31]; the Leeds sulfur mechanism [32], and the mechanism presented by Cerru et al [33,34]. Recently, Zhou et al [35] presented a mechanism for H 2 S oxidation that puts more emphasis on the chemistry of disulfur species.…”

Section: Mechanism Selection and Optimizationmentioning

confidence: 99%

Chemical kinetics mechanism for oxy-fuel combustion of mixtures of hydrogen sulfide and methane

Bongartz

Ghoniem

2015

Combustion and Flame

View full text Add to dashboard Cite

Oxy-fuel combustion of sour gas, a mixture of natural gas (essentially methane (CH 4 )), carbon dioxide (CO 2 ), and hydrogen sulfide (H 2 S), could enable the utilization of large natural gas resources, especially when combined with enhanced oil recovery. In this work, a detailed chemical reaction mechanism for oxy-fuel combustion of sour gas is presented. To construct the mechanism, a CH 4 sub-mechanism was chosen based on a comparative validation study for oxy-fuel combustion. This mechanism was combined with a mechanism for H 2 S oxidation, and the sulfur sub-mechanism was then optimized to give better agreement with relevant experiments. The optimization targets included predictions for the laminar burning velocity, ignition delay time, and pyrolysis of H 2 S, and H 2 S oxidation in a flow reactor. The rate parameters of 15 sulfur reactions were varied in the optimization within their respective uncertainties. The optimized combined mechanism was validated against a larger set of experimental data over a wide range of conditions for oxidation of H 2 S and interactions between carbon and sulfur species. Improved overall agreement was achieved through the optimization and all important trends were captured in the modeling results. The optimized mechanism can be used to make qualitative and some quantitative predictions on the combustion behavior of sour gas. The remaining discrepancies highlight the current uncertainties in sulfur chemistry and underline the need for more accurate direct determination of several important rate constants as well as more validation data.

show abstract

“…Another original detailed mechanism is taken from the "GKDCB96" mechanism for SO x formation 16 including 66 reactions and 15 species. There are in total 504 reactions and 79 species in the full reaction mechanism.…”

Section: Numerical Simulation Methodsmentioning

confidence: 99%

Detailed Modeling of NO_x and SO_x Formation in Co-combustion of Coal and Biomass with Reduced Kinetics

Wei

Guo

et al. 2012

Energy Fuels

View full text Add to dashboard Cite

In the paper, the numerical simulation program coupled with the detailed chemical reaction mechanism and computational fluid dynamics software was applied to calculate the concentration profiles of CO, NO x , and SO x during cocombustion of coal and biomass. The predicted data are compared to experimental results in an entrained flow combustion reactor to validate the numerical method for pulverized coal combustion. The characteristics of pollutant emissions in cocombustion with coal and three typical kinds of biomasses (Swedish wood, Danish straw, and sewage sludge) are also investigated. NO formation is significantly affected by the reactor temperature, and an increasing temperature obviously enhances the NO concentration. In the range of the calculated temperature, the final SO 2 emission level is not obviously influenced by the temperature. Co-combustion technology could effectively reduce the pollutant emissions, and the effect is proportional to the blending ratio of biomass. The biomass with low contents of nitrogen and sulfur and a high volatile content and lower heating value is an ideal co-fired fuel to reduce NO and SO 2 emissions.

show abstract

Impact of SO2 and NO on CO oxidation under post-flame conditions

Cited by 141 publications

References 16 publications

Influence of HCl on CO and NO emissions in combustion

Influence of HCl on CO and NO emissions in combustion

Chemical kinetics mechanism for oxy-fuel combustion of mixtures of hydrogen sulfide and methane

Detailed Modeling of NO_x and SO_x Formation in Co-combustion of Coal and Biomass with Reduced Kinetics

Contact Info

Product

Resources

About

Impact of SO2 and NO on CO oxidation under post-flame conditions

Cited by 141 publications

References 16 publications

Influence of HCl on CO and NO emissions in combustion

Influence of HCl on CO and NO emissions in combustion

Chemical kinetics mechanism for oxy-fuel combustion of mixtures of hydrogen sulfide and methane

Detailed Modeling of NOx and SOx Formation in Co-combustion of Coal and Biomass with Reduced Kinetics

Contact Info

Product

Resources

About

Detailed Modeling of NO_x and SO_x Formation in Co-combustion of Coal and Biomass with Reduced Kinetics