The analysis of distribution of the reaction mixture in ammonia oxidation reactor

Moszowski, Bartosz; Wajman, T.; Sobczak, Krzysztof; Inger, Marek; Wilk, Marcin

doi:10.2478/pjct-2019-0002

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…Diffuser channels are actively used and studied in many other technical applications. For example, it is relevant to optimise the shape and parameters of flows in a diffuser for a mixing chamber in ejectors [19,20], to fine-tune supersonic diffusers [21], to estimate parameters in diffusers for aircraft gas turbine engines [22], to introduce a diffuser into a reactor for ammonia oxidation [23], and to model and improve the aerodynamics of diffusers in a tubular reactor [24] or an industrial furnace [25].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Description of the Aerodynamic Characteristics of Stationary Flows in a Vertical Conical Diffuser When Air Is Supplied through Various Tube Configurations

Plotnikov

2023

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Conical diffusers of various configurations are used in many kinds of technical equipment and manufacturing processes. Therefore, it is a relevant objective to obtain reliable experimental and mathematical data on the aerodynamic characteristics of diffusers. This article presents experimental data on the aerodynamics of stationary flows in a vertical conical diffuser when air is supplied through tubes with various cross sections (circle, square, and triangle). Instantaneous values of air flow velocity are measured with a constant-temperature hot-wire anemometer. Data are obtained on the velocity fields and turbulence intensity along the height and the diameter of the diffuser’s cylindrical part when air is supplied through tubes of various configurations. It is established that air supply through profiled tubes has a significant effect on the shape of the velocity field and turbulence intensity in a vertical conical diffuser. For example, higher values of turbulence intensity are typical of air supplied through profiled tubes (the differences reach 50%). A mathematical formulation (linear and exponential equations) of the change in the average speed and intensity of air flow turbulence along the height of the diffuser’s cylindrical part for various initial conditions and supply tube configurations is presented. The obtained findings will make it possible to refine mathematical models and update algorithms for engineering the design of diffusers for various engineering processes and pieces of technical equipment.

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Section: Introductionmentioning

confidence: 99%

Mathematical Description of the Aerodynamic Characteristics of Stationary Flows in a Vertical Conical Diffuser When Air Is Supplied through Various Tube Configurations

Plotnikov

2023

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“…studied the improvement process for the ammonia oxidation reaction. They have made improvements because the commissioning process in a nitric acid plant is one of the most critical stages in terms of safety and platinum loss in the entire ammonia oxidation process [4].…”

Section: Introductionmentioning

confidence: 99%

Energy Transfer Process and Process Gas Flow Model in Nitric Acid Production

İKBAL,

ERBAŞ,

AYDIN

2023

Kırklareli Üniversitesi Mühendislik Ve Fen Bilimleri Dergisi

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In the Oswald process, ammonia is reacted with oxygen under the catalyst of platinum to form oxides, which are converted into acid. Acid nitriding processes are essential in industry, and many kinds of products, such as plastics, paints, and explosives, are obtained this way. Achieving energy savings and improving production reflexes by monitoring energy consumption on a process basis in such enterprises requires defining the current process flows and structure through a model and analyzing them with parameter changes. In this study, the energy transfer process of NOx gases obtained in the ammonia oxidation reactor and used as process gas in a nitric acid production facility and the parameters affecting the process were investigated. The parameters affecting the efficiency were determined. The problems were addressed by considering the energy efficiency of the facility. The ammonia oxidation reactor is the most essential part of the system. For this reason, the operating parameters of the old reactors in the facility were compared with the revised new reactors. After the revision, the efficiency and performance of the system were examined in old and new reactors. In addition, the flow and hydrodynamic structure of the existing process gas in the new reactors were reviewed with the ANSYS Fluent program, that is, CFD analysis.

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Evaluation of the Control Improvement Benefits for Campaign Profiles - Nitric Acid Production Example

Domański

Golonka

Marusak

et al. 2020

Advances in Intelligent Systems and Computing

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The analysis of distribution of the reaction mixture in ammonia oxidation reactor

Cited by 6 publications

References 7 publications

Mathematical Description of the Aerodynamic Characteristics of Stationary Flows in a Vertical Conical Diffuser When Air Is Supplied through Various Tube Configurations

Mathematical Description of the Aerodynamic Characteristics of Stationary Flows in a Vertical Conical Diffuser When Air Is Supplied through Various Tube Configurations

Energy Transfer Process and Process Gas Flow Model in Nitric Acid Production

Evaluation of the Control Improvement Benefits for Campaign Profiles - Nitric Acid Production Example

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