Perspectiveness and Development of Apparatus the Principle of Work Is Based on the Mechanisms of Discrete-Pulse Energy Input

Dolinskiy, A. A.; Konyk, A.V.; Radchenko, N. V.; Целень, Богдан Ярославович; Gozhenko, L.P.

doi:10.31472/ihe.5.2017.01

Cited by 3 publications

(4 citation statements)

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“…Considering in detail the process of the acidic condensate formation and the reason for the equilibrium of the system "water -carbonic acid" at a concentration of carbonic acid much higher than equilibrium, it was hypothesized that carbon dioxide in the condensate is contained in a dissolved state and in the form of stable bubbles of micro-and nanoscales, being in equilibrium with carbonic acid (16). The obtained results indicate that the course of the process of degassing of acidic condensate is close to the process of degassing of the model solution.…”

Section: Resultsmentioning

confidence: 99%

Application of the method of discrete-pulse energy input for water degassing in municipal and industrial boilers

et al. 2022

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The main advantages and disadvantages of chemical and physical degassing of liquids are considered. It was found that hydrodynamic cavitation should be considered as an important alternative to acoustic cavitation, both in terms of performance and, above all, in terms of energy saving. The processing of two liquids - acidic condensate and model solution (solution of carbon dioxide in distilled water) was performed. The dynamics of changes in the content of dissolved carbonic acid depending on the duration of hydrodynamic treatment in order to determine the optimal processing duration to achieve the required degree of degassing are studied. Liquids were treated on a l laboratory-scale plant developed as part of the implementation of the method of discrete-pulse energy input into heterogeneous media, which creates conditions for intensive growth of vapor bubbles and their removal. The pH values were obtained and the concentrations of carbonic acid in the acidic condensate and the model solution were calculated from the duration of their processing. It was found that the main change in the pH of the model solution and acidic condensate occurs approximately during the first two minutes of processing. The increase in pH and, consequently, the decrease in the dissolved carbonic acid content of both liquids for several days are explained by the relaxation process during which carbon dioxide microbubbles emerge from the liquid, which did not have time to leave the liquid. Data from experimental studies of the dynamics of dissolved carbonic acid content, together with theoretical studies of the growth of gaseous bubbles in liquid and the evolution of a set of vapor bubbles to a critical value of gas content can be used to optimize cavitation degassing processes and justify optimal parameters of these processes. The proposed method of degassing can be used for reagent-free neutralization of acid condensate, which will improve the environment by reducing wastewater (chemically contaminated neutralized condensate and waste water softeners) and rational use of water resources by reducing the need for natural water. Also, the proposed method of liquid degassing can be used in the food industry, in particular, in the production of juices, beverages, vegetable oils, etc.

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Section: Resultsmentioning

confidence: 99%

Application of the method of discrete-pulse energy input for water degassing in municipal and industrial boilers

et al. 2022

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“…Меõàí³çìè ДІÂЕ бóлè òеîðеòè÷íî äîñл³äжеí³ â ðîбîòàõ [10][11][12], à òеõíîлîг³÷í³ òà ³íжеíеðí³ äîпîâíеííя цüîгî ìеòîäà íàâеäеí³ â ðîбîòàõ [13][14][15][16] òà óçàгàлüíеí³ â ðîбîòàõ [17][18].…”

Section: маòер³али òа ìеòодиunclassified

“…Це ñпðè÷èíяє п³äâèщеííя ñòàб³лüíîñò³ гîòîâîї УÂÂÏ, пðèçâîäèòü äî çì³íè äèíàì³êè гîð³ííя òà äîäàòêîâîгî çíèжеííя âèêèä³â NOx òà CO2. Тàêèé ñпîñ³б îäеðжàííя УÂÂÏ пîêðàщóє ðеîлîг³÷í³ òà ñеäè-ìеíòàц³éí³ âлàñòèâîñò³ пàлèâà, çíèжóє шê³äлè-â³ âèêèäè пðè гîð³íí³, âплèâàє íà пàðàìеòðè гî-ð³ííя [10].…”

Section: тèп îблàäíàííяunclassified

Technology and Equipment for Obtaining of Universal Hydrocarbon Fuel

Obodovych,

Tselen,

Stepanova

et al. 2024

Energ. Tech. & Res. Sav.

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An analysis of methods and equipment for obtaining hydrocarbon fuel was carried out. The purpose of the work is the development of technology and heat-mass exchange equipment for the production of universal hydrocarbon fuel, suitable for use in all types of thermal power plants. Heat and mass exchange equipment has been developed, with the help of which it is possible to obtain universal hydrocarbon fuel with a maximum size of coal particles no larger than 3 microns. The use of water-coal suspensions as an energy fuel allows to increase the technical, economic and environmental indicators of power plants. Thus, during the transition to coal-hydrogen fuel, it was possible to increase its thermal capacity from 13.2 to 21.1 MW when 70 % of coal was replaced by coal-hydrogen fuel. Currently, there are various methods and equipment for the preparation of hydrocarbon fuel. However, they all have certain drawbacks. The main disadvantages of the methods of obtaining hydro-coal fuels are multi-stage, metal-intensive, high energy costs, carrying out physico-mechanical and expensive chemical demineralization of coal, etc. Also, the disadvantages are the limited frequency of hydraulic shock pulses during processing in one cycle, which is insufficient when preparing highly concentrated suspensions that meet the requirements for liquid composite fuel intended for direct combustion. In order to improve the quality of the resulting suspension due to more effective grinding and increasing the amount of its solid component, heat and mass exchange equipment was developed, which can be used to obtain universal hydrocarbon fuel for burning in boilers, furnaces, various thermal power equipment, internal combustion engines, etc. As heat and mass exchange equipment, rotary pulsation devices operating according to the method of discrete-pulse energy input were used. Bibl. 18, Fig. 4, Tab. 3.

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“…1, it can be concluded that the most effective oxygen absorption in the AORT installation is in 1 cycle at a pulsation frequency of 2.8 kHz. Under such processing conditions, the content of dissolved oxygen in water reaches 7.9 mg/dm 3 . Further studies on the influence of DPEI mechanisms and design features of the apparatus on oxygen absorption were carried out on residential and communal wastewater.…”

Section: Employees Of the Institute Of Technicalmentioning

confidence: 99%

Discrete-Pulsed Energy Input in Wastewater Treatment Technologies

Ободович¹,

Саблій²,

Sydorenko³

et al. 2023

WPT STN

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Wastewater treatment is an important environmental problem of the national economy of any country. Therefore, increasing the efficiency of wastewater treatment through the use of innovative technologies and equipment is becoming relevant. Basically, for the biological treatment of wastewater from organic and biogenic pollution, aerotanks with different aeration systems are used. The aeration and mass transfer of the mixture of waste water and activated sludge accounts for up to 80 % of operating costs. The article deals with the problems of using thermal physics in wastewater treatment by intensifying the mass transfer process and accelerating the biological oxidation reaction. The intensification occurs due to the impact on the treated medium (waste water) of the input energy by the discrete-pulse method. The method is implemented using new heat and mass transfer equipment, namely a rotary-type aerator-oxidizer (AORT). A diagram of a rotary-type aerator-oxidizer and a technological scheme for biological wastewater treatment using this apparatus are presented. A procedure has been developed for determining the volumetric coefficient of oxygen mass transfer from the gas phase to the liquid phase during biological wastewater treatment. A number of studies have been carried out on the dependence of the concentration of oxygen dissolved in water on the number of treatment cycles at: different angular speed of rotation of the rotor unit; different frequencies of flow pulsations; different flow shear rates. It is shown that the maximum concentration of dissolved oxygen is reached in 1–2 passes through the apparatus of the processed mixture. The thermophysical and energy characteristics of the operation of a rotary-type aeration-oxidation plant are determined depending on the frequency of flow pulsations. A comparative assessment of the heat-mass exchange and energy indicators of modern aeration devices used for wastewater treatment with the AORT installation has been carried out and it has been shown that when using the AORT installation, energy costs for aeration are reduced by 20 %.

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Perspectiveness and Development of Apparatus the Principle of Work Is Based on the Mechanisms of Discrete-Pulse Energy Input

Cited by 3 publications

References 1 publication

Application of the method of discrete-pulse energy input for water degassing in municipal and industrial boilers

Application of the method of discrete-pulse energy input for water degassing in municipal and industrial boilers

Technology and Equipment for Obtaining of Universal Hydrocarbon Fuel

Discrete-Pulsed Energy Input in Wastewater Treatment Technologies

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