Flue Gas NO<sub>X</sub> Reduction Using Ammonia Radical Injection

Zhou, Qian; Yao, Shi‐Chune; Russell, Armistead G.; Boyle, John

doi:10.1080/10473289.1992.10467067

Cited by 36 publications

(7 citation statements)

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“…This indicates that process effectiveness and energy efficiency may be improved with further investigation of the mixing and heat transfer mechanism. Fluid dynamic modelling and testing of inflame NH 3 radical injection has been investigated separately (Zhou et al, 1992).…”

Section: Sncr Process Tempering For Performance Enhancement (I) Sncr mentioning

confidence: 99%

Control of combustion-generated nitrogen oxides by selective non-catalytic reduction

Javed

Irfan

Gibbs

2007

Journal of Environmental Management

271

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Section: Sncr Process Tempering For Performance Enhancement (I) Sncr mentioning

confidence: 99%

Control of combustion-generated nitrogen oxides by selective non-catalytic reduction

Javed

Irfan

Gibbs

2007

Journal of Environmental Management

271

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“…NO x removal is generally a problem of NO removal because NO accounts for about 95 mol % of NO x emitted 3. There are two main pathways for NO conversion: chemical oxidation and chemical reduction.…”

Section: Introductionmentioning

confidence: 99%

Effect of oxygen on nonthermal plasma reactions of nitrogen oxides in nitrogen

Zhao

Garikipati

et al. 2005

AIChE Journal

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in Wiley InterScience (www.interscience.wiley.com). NO is mainly converted to NO 2 by chemical oxidation in the presence of oxygen. Initial selectivity analysis shows that three electron collision reactions are important for NO x evolution in O 2 /N 2 . The rate constants of these reactions decrease with increasing oxygen concentration. This is because oxygen is electronegative and thus reduces electron concentration. The rate constant of O 2 dissociation by electron collision reaction is almost two orders of magnitude higher than that of N 2 dissociation. NO formation occurs predominantly through N( 2 D) ϩ O 2 3 NO ϩ O. The critical oxygen concentration, defined as the concentration at which the NO x formation rate counterbalances the NO x decomposition rate, increases with increasing initial NO concentration.

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“…Plasma induced radicals from ammonia have been injected into NO-laden post-combustion gases to reduce pollutant concentrations. Results of chemical kinetics modelling (Zhou et al, 1992) indicate that ammonia radicals (formed by interaction with an argon plasma) introduced into the post-combustion gases will provide nearly complete NO removal. Laboratory investigations have shown that molecular radical reduction removes up to 94% of the NO.…”

Section: Iv) Thermal Plasma Techniquesmentioning

confidence: 98%

“…Inductively Coupled Plasma (ICP) Torch Some work on plasma-generated radicals for NO x destruction has been conducted at DOE/PETC and at Carnegie Mellon University using an Inductively Coupled Plasma (ICP) torch, which generates NHj radicals from ammonia Zhou, 1991;Zhou et al, 1992Zhou et al, , 1993. Plasma induced radicals from ammonia have been injected into NO-laden post-combustion gases to reduce pollutant concentrations.…”

Section: Iv) Thermal Plasma Techniquesmentioning

confidence: 99%

Removal of NO_xfrom Flue Gas by Reburning with Plasma Activated Natural Gas: Review and Economics

Bartoszek

Vasquez

et al. 1998

Combustion Science and Technology

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By initiating chain reactions that consume NO x , CHj radicals play an important role in natural gas rebuming. In conventional reburning, most of the methane is consumed in reactions with oxygen to fonn CO, and does not produce CHi radicals as intermediate products, which limits NO reduction efficiency. Activating natural gas externally to the boiler may generate a mixture of CHi radicals by passing CH. through a discharge before injection into the rebuming zone. Five activation technologies are reviewed: microwave heating and discharge plasmas, electron beam irradiation-induced plasmas, corona discharge induced plasmas, and thermal plasmas. Wall, cyclone and tangentially fired boilers were considered in the economic assessment. From preliminary capital and operating cost estimates, pulse corona and electron beam techniques appear to be the most promising activation techniques.

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Flue Gas NO_X Reduction Using Ammonia Radical Injection

Cited by 36 publications

References 1 publication

Control of combustion-generated nitrogen oxides by selective non-catalytic reduction

Control of combustion-generated nitrogen oxides by selective non-catalytic reduction

Effect of oxygen on nonthermal plasma reactions of nitrogen oxides in nitrogen

Removal of NO_xfrom Flue Gas by Reburning with Plasma Activated Natural Gas: Review and Economics

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Flue Gas NOX Reduction Using Ammonia Radical Injection

Cited by 36 publications

References 1 publication

Control of combustion-generated nitrogen oxides by selective non-catalytic reduction

Control of combustion-generated nitrogen oxides by selective non-catalytic reduction

Effect of oxygen on nonthermal plasma reactions of nitrogen oxides in nitrogen

Removal of NOxfrom Flue Gas by Reburning with Plasma Activated Natural Gas: Review and Economics

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Product

Resources

About

Flue Gas NO_X Reduction Using Ammonia Radical Injection

Removal of NO_xfrom Flue Gas by Reburning with Plasma Activated Natural Gas: Review and Economics