«Energy Technologies and Resource Saving» 1-2016
Rudyka V.I., Candidate of Economic Sciences
STATE ENTERPRISE «STATE INSTITUTE FOR DESIGNING ENTERPRISES OF COKE OVEN AND BYPRODUCT PLANTS», Kharkov
60, Sumska Str., 61002 Kharkov, Ukraine, e-mail: email@example.com
Energy and Resource Saving Technologies in GIPROKOKS Projects
SE «GIPROKOKS» work experience related to energy-saving technologies and energy efficiencyin the development of scientific and technical documentation for the projects of existing and reconstructed coke oven and by-product enterprises is presented. Systematic approach to energy efficiency is applied. The main directions of energy-saving at coke ovenand by-product plants are described: energy-saving measures in the main product production— coke and by-products from coking process; introduction of coal blend stamping technology, together with the dry cooling of coke. Challenging issue of thermochemical treatment of low-grade coal, brown coal and other carbonaceous feed into motor fuels and other technology products is reviewed. Bibl. 11, Fig. 3.
Key words: coke oven and by-product plants, energy-saving, waste energy, coke, coke oven batteries, thermochemical treatment of carbonaceous feed.
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Soroka B.S., Doctor of Technical Sciences,Vorobiov M.V., Candidate of Technical Sciences, Bershadskyi A.I.
The Gas Institute of National Academy of Sciences of Ukraine, Êiev
39, Degtyarivska Str., 03113 Kiev, Ukraine, e-mail: firstname.lastname@example.org
Natural Gas Saving by Replacement the Last for Process Gases while Heating Middle and High Temperature Furnaces. Part 1. Influence of Low-Calorie Gases Characteristics on Fuel Flow Rate in Furnaces
In the paper the gas fuel classification has been advanced basing upon Eurostat’s criteria. The category of «Gas fuels» includes the natural gas (NG) and derived or recovered gases: blast furnace (BFG), coke-oven (COG) and the gas works gas (GWG) but doesn’t include the biogases. We unite the most wide-spread of mentioned notions like BFG and COG in group called «process gases» PG. The thermodynamic analysis of application the low-calorific gas fuels and fuel mixtures in the industrial furnaces has been carried out by using the ideal gas equation. The main heat engineering characteristics of the process gases: theoretical combustion temperature TT and combustion heat Ql — have been calculated grounded upon general enthalpian attitudes for any fuels and in dependence on composition of the mixed fuels: BFG with natural gas or BFG with COG. Evaluation of opportunities the natural gas saving by transfer from NG as a fuel for mixed NG + PG fuel by heating the furnaces has been performed. The technique of definition the substituting fuel flow rate has been proposed in frame of author’s methodology of fuel interchangeability. The problem of saving or over expenditure the NG flow rate along with change of available and of combustion heat for mentioned gas fuel mixtures (NG with BFG and COG + BFG) has been studied and analyzed. The methodology of the fuels replacement has been advanced. Instead of traditional approach with the basic condition of conservation the heat flux introduced into the furnace by any fuel combustion, the novel condition of conservation the useful heat absorbed by the furnace charge is proposed by author (B. Soroka). It means an assumption the condition of invariable flux of the useful total enthalpy to be attained in case of fuel replacement and account of the furnace (fuel utilization) efficiency. An analysis of fuel saving by flue gases heat recovery has been fulfilled for the case of preheating the initial combustion components: an air or/and BFG. It has been stated that the role of fuel preheating for NG saving is increasing with respect to opportunities of the proper impact of an air flow as the share of BFG in the mixture of fuel gases will grow. The calculations have been carried out for the cases of furnace operation temperatures of 800 and 1000 °C by conditions of cold initial combustion components: fuel gases and an air-oxidant (25 °C) and under preheating one or both components (250 and 400 °C). It was stated that saving of NG is increasing by enhancement the portion of BFG in fuel mixture with NG while the working (furnace operation) temperature is of moderate level. For eligible cases the required rates of heat energy fluxes: for available heat (chemical and physical (sensible) energy of initial combustion components: fuel and air-oxidant) and for combustion heat — have been evaluated. The higher is the share of BFG in fuel mixture with NG the bigger are the required heat fluxes resulting in over expenditure for the last values in comparison with heat consumption for the cases of clean natural gas using by furnace operation while lowering the NG portion in mixed fuel gas. The calculations on replacement the natural gas for mixture of COG with BFG have been carried out by means of evaluation an available heat content and of combustion heat through the values of excess total enthalpy flows of initial combustion components: gas fuel and an air-oxidant. The similar procedure on comparison the combustion heat for mentioned fuels has been fulfilled as well. Bibl. 21, Fig. 3, Table 2.
Key words: alternative gas fuel, blast furnace gas, coke oven gas, combustion heat, enthalpy analysis, fuel replacement, heat-treatment furnace, substitution of fuels, natural gas saving, theoretical combustion temperature.
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Boichenko S.V., Doctor of Technical Sciences, Professor, Iakovleva A.V., Shkilniuk I.A.
National Aviation University, Kiev
1, Kosmonavt Komarov Ave., of. 1.402, 03058 Kiev, Ukraine, e-mail: ñhemmotology@ukr.net
Implementation of Harmonized Technical Requirements to the Quality of Aviation Gasolines and Jet Fuel
Modern state of normative-technical regulation in sphere of aviation fuel supply is presented in the article. The article describes in details the main principles of approach to normative-technical regulation in EU countries and other developed countries. The main normative documents that determine requirements to aviation gasolines and jet fuels are presented in the articles. Attention is paid to the problem of unaknowledgement of jet fuels produced in Ukraine by numerous leading countries. It is connected with some inconformity of requirements to jet fuels quality stated in Ukrainian and international standards. The article describes documents that regulate relations in sphere of aviation fuel supply and that were used as a base for future technical regulation. The parts of the developed technical regulation are presented and the main content of these parts are considered. There was done the conclusion about practicability of technical regulation development and about positives consequences in a result of its implementation in Ukraine. Bibl. 10, Tab. 3.
Key words: technical regulation, quality, normative-technical regulation, aviation gasoline, jet fuel, aviation fuel supply.
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Vavrysh A.S., PhD Student, Marchuk Yu.V., Candidate of Technical Sciences, Prazhennik Yu.G.
The Gas Institute of National Academy of Sciences of Ukraine, Êiev
39, Degtyarivska Str., 03113 Kiev, Ukraine, e-mail: email@example.com
Methods of Studying the Structure and Purity of the Carbon Nanotubes (Review)
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Key words: carbon nanotubes, research methods, defects.
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Volchyn I.A., Doctor of Technical Sciences, Haponych L.S., Candidate of Technical Sciences
Coal Energy Technology Institute of National Academy of Sciences, Kiev
9, Andryivska Str., 04070 Kiev, Ukraine, e-mail: firstname.lastname@example.org, email@example.com
Ñalculatiîn of the Parameters of Exhaust Gases Coal-fired Thermal Power Plants Based on Solid Fuel Characteristics
We have developed an engineering method of determining the specific emission of dry exhaust gases at the Ukrainian coal-fired thermal power plants (TPP) and the expected concentration of sulfur dioxide in them based on the date of the technical analysis in the presence of unburnt-carbon factor q4. We propose to use the developed method for high-reactive [G, DG, D] and low-reactive [A, SA (P)] coals in the range of the fuel ash content Ad from 4.0 to 50.0 % and low heat value Qi r from 14.5 to 32.0 MJ/kg for boilers with wet and dry slag removal. Calculations of the gross and specific emissions of dry exhaust gas and the concentration of sulphur dioxide in them at the Ukrainian coal-fired TPPs since 2012 to 2015 were carried out. The values of specific SO2 emissions in exhaust gases during the recent years are at the level of 16–18 g/kWh of electricity supplied. The developed method allows to make an estimate of the expected sulphur dioxide emission in exhaust gases and to choose necessary desulphurization technology to meet the environment legislation requirements. Bibl. 12, Fig. 1, Tab. 5.
Key words: power industry, environment, thermal power plant, exhaust gas, emission, sulphur dioxide.
1. Nakaz Ministerstva okhorony navkolyshn’oho pryrodnoho seredovyshcha Ukrayiny vid 22.10.2008 r. # 541 «Pro zatverdzhennya Tekhnolohichnykh normatyviv dopustymykh vykydiv zabrudnyuyuchykh rechovyn iz teplosylovykh ustanovok, nominal’na teplova potuzhnist’ yakykh perevyshchuye 50 MVt» [The Order of the Ministry of the Environment of Ukraine No. 541 dated October, 22, 2008 «On approval of the technological norms of the permissible contaminants’ emissions from TPPs, rated capacity of which exceeds 50 MW». — Access mode: http://zakon0. rada.gov.ua/laws/show/z1110-08 (the accessed date 2.12.2015) — the screen name] (Ukr.).
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12. Volchyn I., Haponych L. Estimate of the sulfur dioxide concentration at thermal power plants fired by Donetsk coal , Power Technology and Engineering, 2014, 48(3), pp. 218–221.
Gomelya M.D.1, Doctor of Technical Sciences, Professor, Hrabitchenko V.M.1, Trokhymenko G.G.2, Candidate of Technical Sciences
1 National Technical University of Ukraine «KPI», Kiev
37, Peremogy Ave., build. 4, 03056 Kiev, Ukraine, e-mail: firstname.lastname@example.org
2 Admiral Makarov National University of Shipbilding, Nikolaev
9, Stalingrad Heroes Ave., 54025 Mykolaiv, Ukraine, e-mail: email@example.com
Nitrates Removal from Water by Ion-Exchange Purification in the Presence of Chlorides and Sulfates
Nitrates, chlorides and sulfates removal from water by ion-exchange purification processes were examined. Relations on persorption of nitrates, sulfates and chlorides on ion-exchanger form, relations and level of anions concentrations in the solution were determined. It is shown that when using anion exchanger ÀÂ-17-8 in the basic; carbonate form or basic-carbonate form there alongside with extraction of anions from water it gets softer. When using the ion-exchanger in the basic form the softening is primarily caused by extraction of magnesium and in the carbonate form due to settling of calcium. It is determined that with different ratios of anions concentrations during ion-exchange purification there nitrates breakthrough occurs. The nitrates concentrations in the filtrate get higher with increase of sulfates and chlorides content as well as in proportion to saturation of the anion exchanger with nitrates and sulfates. Bibl. 17, Fig. 7, Table 1.
Key words: ion-exchange, regeneration, water softening, concentrations utilization.
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2. Singleton Michael J. Tracking sources of unsaturated zone and groundwater nitrate contamination using nitrogen and oxygen isotopes at the Hanford Site, Washington / Michael J. Singleton, Katharine N. Woods, Mark E. Conrad, Donald J. Depaolo, P. Evan Dresel, Environ. Sci. and Technol, 2005, 39 (10), pp. 3563–3570.
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8. Ievleva O.S. Influence of low molecular weight amines to extract nitrates by nanofiltration / O.S. Ievleva, V.P. Badeha, V.V. Goncharuk, Himija i tehnologija vody, 2010, 32 (4), pp. 438–447. (Rus.)
9. Opportunities of low-pressure reverse osmosis in the purification of natural waters from mineral nitrogen / V.V. Goncharuk, M.M. Balak³na, V.O. Osipenko, D.D. Kucheruk, V.Z. Shvidenko, Dopov³di Nac³onal’no¿ akadem³¿ nauk Ukra¿ni, 2010, (3), pp. 194–199. (Ukr.)
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11. Lozovskij A.V. Investigation of the photocatalytic activity of Ag/TiO2 catalysts, the reduction reaction of nitrate ions in aqueous solutions / A.V. Lozovskij, I.V. Stoljarov, R.V. Prihod’ko, V.V. Goncharuk, Himija i tehnologija vody, 2009, 31 (6), pp. 631–642. (Rus.)
12. Mackiewicz Jolanta. Usuwanie azotanow z wod podziemnych na selektywnych zywicach anionjwymiennych IONAC / Jolanta Mackiewicz, Andrzej Dziubek, Ochr. Srod, 2005, (4), pp. 45–47. (Pol.)
13. Gomelja M.D. Evaluation of efficiency of anion exchange resin in the purification of water from nitrates / M.D. Gomelja, O.V. Goltvjanic’ka, T.O. Shabl³j, V³snik Nac³onal’nogo tehn³chnogo un³versitetu «KhP²», 2012, (1), pp. 84–90. (Ukr.)
14. Grab³tchenko V. M. Separation of sulfates and nitrates during ion exchange water desalination / V. M. Grab³tchenko, ². M. Trus, M. D. Gomelja, V³snik Nac³onal’nogo tehn³chnogo un³versitetu «KP²», 2014, (2), pp. 72–75. (Ukr.)
15. Kucherik G. V Investigation of softening processes in the mine water demineralization on anion exchange resin AB-17-8 / G.V. Kucherik, Ju.A. Omel’chuk, M.D. Gomelja,. Sh³dno-ªvropejs’kij zhurnal peredovih tehnolog³j, 2013, 2/11 (62), pp. 35–38. (Ukr.)
16. Trus I.N. Separation of chloride and sulfate during ion exchange demineralization of water / I.N. Trus, N.D. Gomelja, T.A. Shablij, Metalurgicheskaja i gornorudnaja promyshlennost’, 2014, (5), pp. 119–122. (Rus.)
17. Trus ². Electrocemical processing of mine water concentrates with obtaining available chlorine / ². Trus, V. Hrabitchenko, M. Gomelya , British Journal of Science, Education and Culture, 2014, (2), pp. 103–108.
Torchinskij A.I., Candidate of Technical Sciences, Ljashko A.Yu.
The Gas Institute of National Academy of Scienses of Ukraine, Kiev
39, Degtjarivska Str., 03113 Kiev, Ukraine, e-mail: firstname.lastname@example.org
Optimization of Thermal and Aerodynamic Operating Mode of Tunnel Kiln for Ceramic Bricks Calcination
Based on the research of operating tunnel furnaces and their analysis there were identified bottlenecks in the calcination process of ceramic bricks in tunnel kilns and proposed optimal thermal and aerodynamic modes, which determine energy-efficient and high-quality calcination of a ceramic brick in tunnel kilns, operating on natural gas. The basic principles of operation of a tunnel kiln, the distribution of the aerodynamic flow along the length of the furnace and the influence of the aerodynamic regime on the quality of calcination have been studied. The detailed analysis of the static pressure curve of the tunnel kiln was carried out. The optimal aerodynamic and thermal characteristics of ceramic bricks calcination. The concept of an availability of the necessary equipment and its optimum location is considered. The scheme of gas-air flows motion and the corresponding graph of the distribution of static pressure along the length of the working channel of a tunnel kiln are presented. The method of controlling the volume of heat carrier is considered. Bibl. 6, Fig.1.
Key words: tunnel kiln, calcination optimal mode, aerodynamic streams.
1. Torchinskij A.I., Ljashko A.Yu., Sergienko A.A. [Tunnel furnaces stock for ceramic brick manufacture modernization. 2. The furnaces heating system development], Energotechnologii i resursosberezhenie [Energy Technologies and Resource Saving], 2010, (2), pp. 57–60. (Rus.)
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