Modelling and Simulation of Gauze Reactor of Ammonia Oxidation

Salam, Mohamed Abdel

doi:10.11648/j.ajche.20160401.13

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…The platinum catalyst, which is usually an alloy with rhodium (2-10%), has the form of gauzes made up of wires. The catalyst life time for the process is about 6 months [3].…”

Section: Ammonia Oxidation Industrial Reactormentioning

confidence: 99%

“…As the gauze temperature increases, the rate of Pt losses increases. This is the main reason of the limitation on gauze temperature [3].…”

Section: Industrial Catalyst For Ammonia Oxidationmentioning

confidence: 99%

“…(1) This reaction is very highly exothermic reaction; Uronen has shown that the overall oxidation rate is controlled by the transfer of NH3 from the bulk gas phase to the platinum surface [3]. The total pressure during the combustion of NH3 is the most important technological parameter of industrial oxidation of ammonia.…”

Section: Introductionmentioning

confidence: 99%

“…%, the time of contact with the catalyst is 10 -3 to 10 -4 sec. The platinum catalyst, which is usually an alloy with rhodium (2 -10%), has the form of gauzes made up of wires [3].…”

Section: Introductionmentioning

confidence: 99%

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Modelling of an industrial reactor for ammonia oxidation

Elsayed,

farag

2023

ERJ. Engineering Research Journal

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Modelling of an industrial catalytic ammonia oxidation reactor for nitric oxide production in nitric acid plant over gauzes of Pt/Rh catalyst presents the current study. Most of mathematical models of Catalytic ammonia oxidation process were developed for microreactors. Mathematical models were simulated for industrial ammonia oxidation reactor, describing the effect of external conditions such as, (inlet temperature, inlet pressure, inlet composition of gas mixture…) on the behavior of the reactor, but there aren't models describe the variation of concentration of gas species along the catalyst bed. In the current study, two basic models for mass balance and energy balance are used (after integration by new version of MATLAB (R2017b)) for an industrial ammonia oxidation reactor. The first model (mass balance) was used to predict the variation of the concentration of NH3, O2, NO and H2O along the catalyst bed of the reactor (4.8m diameter, 1m height). The second model (energy balance) was used for the same reactor to predict temperature variation along the catalyst bed. The deviation in the 1st case didn't exceed 6.2 % for NO, 3.8% for H2O, 5.6% for O2and 1% for NH3.Also, in case of energy balance the deviation was 0.4 %, so the mathematical models have shown quite high degree of accuracy to predict the operating values with minimum deviation. The rate of consumption/ formation for NH3, O2, NO and H2Owere also calculated.

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“…The platinum catalyst, which is usually an alloy with rhodium (2-10%), has the form of gauzes made up of wires. The catalyst life time for the process is about 6 months [3].…”

Section: Ammonia Oxidation Industrial Reactormentioning

confidence: 99%

“…As the gauze temperature increases, the rate of Pt losses increases. This is the main reason of the limitation on gauze temperature [3].…”

Section: Industrial Catalyst For Ammonia Oxidationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…%, the time of contact with the catalyst is 10 -3 to 10 -4 sec. The platinum catalyst, which is usually an alloy with rhodium (2 -10%), has the form of gauzes made up of wires [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations