3D Nanostructured Porous Layer of Ammonium Nitrate: Influence of the Moisturizing Method on the Layer's Structure

Аrtyukhov, Аrtem; Sklabinskyi, Vsevolod Ivanovych

doi:10.21272/jnep.8(4(1)).04051

Cited by 16 publications

(5 citation statements)

References 6 publications

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“…Therefore, a lot of research work still needs to be done in order to find the optimum performances of M-Cycle for each application. Perspective application of the M-cycle is heat utilization during the dehydration of materials in multistage dryers [20] as well as granulation plants [21][22][23][24].…”

Section: Discussionmentioning

confidence: 99%

Maisotsenko cycle applications for multistage compressors cooling

Levchenko

Yurko²,

Аrtyukhov

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The present study provides the overview of Maisotsenko Cycle (M-Cycle) applications for gas cooling in compressor systems. Various schemes of gas cooling systems are considered regarding to their thermal efficiency and cooling capacity. Preliminary calculation of M-cycle HMX has been conducted. It is found that M-cycle HMX scheme allows to brake the limit of the ambient wet bulb temperature for evaporative cooling. It has demonstrated that a compact integrated heat and moisture exchange process can cool product fluid to the level below the ambient wet bulb temperature, even to the level of dew point temperature of the incoming air with substantially lower water and energy consumption requirements. IntroductionGas compression and transportation is one of the most energy consuming technologies in the world. Compressors are a vital link in the conversion of raw materials into refined products. Compressors also handle economical use and transformation of energy from one form into another. They are used for the extraction of metals and minerals in mining operations, for the conservation of energy in natural gas reinjection plants, for secondary recovery processes in oil fields, for the utilization of new energy sources such as shale oil and tar sands, for furnishing utility or reaction air, for oxygen and reaction gases in almost any process, for process chemical and petrochemical plants, and for the separation and liquefaction of gases in air separation plants and in LPG and LNG plants. The economy and feasibility of all these applications depend on the reliability of compressors and the capability of the compressors selected to handle a given gas at the desired capacity [1]. Since, value of specific work for all compressors is determined by several factors as: specific heat ratio k, specific gas constant R, pressure ratio  and inlet temperature T in . As a rule, all the enumerated factors except the inlet temperature are defined by the initial conditions and/or performance specification for the designed compressor. That is why inlet temperature reduction remains the most feasible way to reduce compressors' specific work.There are a lot of approaches to reduce T in value (depending on the place of cooling):

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Section: Discussionmentioning

confidence: 99%

Maisotsenko cycle applications for multistage compressors cooling

Levchenko

Yurko²,

Аrtyukhov

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Результати досліджень, яких було відображено в попередніх роботах авторів цієї статті [13,14], показали, що різні типи зволожувачів можуть утворювати різні види пор у структурі пористої аміячної селітри після сушіння відповідно до такої класифікації: -тріщини, відколи, каверни («механічні» пори); -канали різної форми («модифікаційні» пори -мікро-, мезо-і макропори).…”

Section: експериментальна методикаunclassified

“…Застосування запропонованого способу одержання ґранул пористої структури у вихровому газовому потоці уможливлює [15]: -створити розвинену пористу структуру на її поверхні вже в межах ядра псевдозрідженого шару на початковому етапі контакту з вихровим потоком високотемпературного теплоносія до виходу ґранули на дзеркало псевдозрідженого шару; -запобігти утворенню ґранул з формою, відмінною від сферичної; -повністю виключити чинник впливу на дисперґування -нерівномірність надходження до дисперґатора рідкого матеріялу.…”

Section: експериментальна методикаunclassified

Multilayer Granules of Ammonium Nitrate with Nanostructured Porous Layers: Production Technology and Quality Indicators

2020

Nanosist. Nanomater. Nanotehnol.

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“…We can organize this process by using the original mass-transfer-separation contact stages of vortex type [29,30]. Application of such contact stages is discussed below on example of vortex granulators-dryers.…”

Section: Multi-stage Shelf Dryersmentioning

confidence: 99%

“…In this article we described how to obtain a porous ammonium nitrate by moisture and heat treatment [27][28][29][30][31] according to the scheme, which is shown in Figs 1, and 2. In this production waste are fine (sub-standard) grain, ammonium nitrate dust and ammonia.…”

Section: Introductionmentioning

confidence: 99%

Utilization of dust and ammonia from exhaust gases: new solutions for dryers with different types of fluidized bed

Аrtyukhov

Аrtyukhova

2018

J Environ Health Sci Engineer

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Background The article is devoted to the development of new utilization methods of exhaust gases by cleaning them from fine particles, dust and harmful gas components. The basic design solutions, which allow to increase the degree of exhaust gases cleaning, were presented. The effectiveness of design solutions was supported by the results of experimental studies. Analysis of the research results allowed developing of new designs of equipment for dehydration in fluidized bed. The article also presents the calculation algorithm of eco-friendly dryers with fluidized bed. Methods Physical modeling was based on methods of similarity theory. In studies in dryers experimental models the installation scale was changed (compared with industrial conditions). Geometric similarity was maintained by equity of constants and invariants of geometric similarity. Always similarity of respective particles movement and their trajectories in industrial design and in experimental models was also maintained. The creation of graphical dependences was carried out by differential methods of mathematical analysis and integral calculus. The reliability of obtained experiment results was caused by the application of time-tested in practice methods. Results and discussion Control of product fractional composition allowed to make a selection of required fractions (including the fine granules) in a certain place of device. This allowed to increase the degree of purification of exhaust gas even before it output from the dryer working space. The process of separating the granules into fractions and the selection of fine fraction can be performed due to structural changes in dryer units and selection of optimal hydrodynamic conditions of fluidizing agent motion. Installation of special units in the dryers allowed to extract other contaminants from the exhaust gases. Conclusions Proposed constructive solutions for fluidized bed dryers allowed to:-provided of granules classification to the desired number of fractions with a simultaneous release and discharged of fine fraction from the working volume of dryer without the exhaust gases; -increased the degree of monodispersity of commodity granules on 25-35%; -reduced the amount of dust in the exhaust gases on 35-65%; -reduced the ammonia content in the exhaust gas on 90-95%.

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3D Nanostructured Porous Layer of Ammonium Nitrate: Influence of the Moisturizing Method on the Layer's Structure

Cited by 16 publications

References 6 publications

Maisotsenko cycle applications for multistage compressors cooling

Maisotsenko cycle applications for multistage compressors cooling

Multilayer Granules of Ammonium Nitrate with Nanostructured Porous Layers: Production Technology and Quality Indicators

Utilization of dust and ammonia from exhaust gases: new solutions for dryers with different types of fluidized bed

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