Pub Date : 2019-09-20DOI: 10.33070/ETARS.3.2019.02
E. M. Lavrentsov, I. Sigal, A. Smikhula, E. P. Dombrowska, O. S. Kernazhytska, O. Marasin
The increases service life of gas hot water supply boilers with uniform heat supply along of the depth (width) of the combustion chamber for more than 40 years, by using of slot bottom burners was shown. While reducing nitrogen oxide emissions by using of dual-screens its can significantly increase the heat stress of the furnace, the volume of the furnace chamber and the temperature of the flue gases had left unchanged. The boilers with a capacity of 1–10 MW, with the above technical design solutions of the Gas Institute of the NAS of Ukraine, with a total heat capacity of more than 60 GW, continue to be operated and produce in Ukraine and the CIS countries. Installed boilers relatively nitrogen oxide emissions comply with new EU directive (EU) 2015/2193. The using of gas slot bottom burners can reduce nitrogen oxide emissions by approximately 15 % compared to the basic factory vortex types GMG or GMGB installed on many boilers was shown. A project for the reconstruction of boilers TVG-8 (TVG-8M) and KVG-7.56 with an increase in convective surface area by replacing the factory pipe 28x3 mm with 32x3 mm had developed. Using the improved slot bottom burners in particular equipped with calibrated nozzles for precise dosing of natural gas into the air was envisaged. As a result of a research test of the reconstructed boilers for 3-5 years these technical solutions could increase the energy efficiency of existing TVG and KVG boilers up to the current European level —94–95 at rated heat output was shown. Ref.18, Fig.4, Tab. 5.
{"title":"EXPERIENCE OF DEVELOPMENT, IMPLEMENTATION AND MODERNIZATION OF HOT WATER SUPPLY BOILERS WITH DUAL-SCREENS AND THE SLOT BOTTOM BURNERS","authors":"E. M. Lavrentsov, I. Sigal, A. Smikhula, E. P. Dombrowska, O. S. Kernazhytska, O. Marasin","doi":"10.33070/ETARS.3.2019.02","DOIUrl":"https://doi.org/10.33070/ETARS.3.2019.02","url":null,"abstract":"The increases service life of gas hot water supply boilers with uniform heat supply along of the depth (width) of the combustion chamber for more than 40 years, by using of slot bottom burners was shown. While reducing nitrogen oxide emissions by using of dual-screens its can significantly increase the heat stress of the furnace, the volume of the furnace chamber and the temperature of the flue gases had left unchanged. The boilers with a capacity of 1–10 MW, with the above technical design solutions of the Gas Institute of the NAS of Ukraine, with a total heat capacity of more than 60 GW, continue to be operated and produce in Ukraine and the CIS countries. Installed boilers relatively nitrogen oxide emissions comply with new EU directive (EU) 2015/2193. The using of gas slot bottom burners can reduce nitrogen oxide emissions by approximately 15 % compared to the basic factory vortex types GMG or GMGB installed on many boilers was shown. A project for the reconstruction of boilers TVG-8 (TVG-8M) and KVG-7.56 with an increase in convective surface area by replacing the factory pipe 28x3 mm with 32x3 mm had developed. Using the improved slot bottom burners in particular equipped with calibrated nozzles for precise dosing of natural gas into the air was envisaged. As a result of a research test of the reconstructed boilers for 3-5 years these technical solutions could increase the energy efficiency of existing TVG and KVG boilers up to the current European level —94–95 at rated heat output was shown. Ref.18, Fig.4, Tab. 5.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85043056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.33070/ETARS.3.2019.07
I. Sigal, A. Smikhula, O. Sigal
In the article discusses the features of constructive solutions accepted in the burner devices and chambers of boiler units, which were used both when converting solid fuel boilers to natural gas, and creating new designs of gas boiler units. The works to reduce nitrogen oxide emissions at the Gas Institute of the National Academy of Sciences of Ukraine began in the 1960s and by 1971 significant results had been achieved was shown. The main methods and technical solutions that are used to reduce emissions of nitrogen oxides during the combustion of natural gas in boilers of various capacities, including 300 MW power units, are considered. The principal design of a two-stage burner, which are operated in an amount of more than 2000 units in Ukraine and the CIS countries is presented. The installed two-stage burner devices for combustion of natural gas require immediate reconstruction with bringing their indicators to the calculated ones at the first stage. The modernization of the exist ing two-stage burners is possible to achieve the readings of the EU emissions directive 2010/75/EU was shown. The most promising technologies for further reducing the level of nitrogen oxide emissions less than 100 mg/Nm3 (3% O2, dry gases) when burning natural gas were shown. Bibl. 38, Fig.4, Tab. 1.
{"title":"EXPERIENCE OF THE DEVELOPMENT OF BURNERS, CHAMBERS, AND TECHNOLOGIES FOR REDUCING EMISSIONS OF NITROGEN OXIDES BY BOILERS DURING THE COMBUSTION OF NATURAL GAS","authors":"I. Sigal, A. Smikhula, O. Sigal","doi":"10.33070/ETARS.3.2019.07","DOIUrl":"https://doi.org/10.33070/ETARS.3.2019.07","url":null,"abstract":"In the article discusses the features of constructive solutions accepted in the burner devices and chambers of boiler units, which were used both when converting solid fuel boilers to natural gas, and creating new designs of gas boiler units. The works to reduce nitrogen oxide emissions at the Gas Institute of the National Academy of Sciences of Ukraine began in the 1960s and by 1971 significant results had been achieved was shown. The main methods and technical solutions that are used to reduce emissions of nitrogen oxides during the combustion of natural gas in boilers of various capacities, including 300 MW power units, are considered. The principal design of a two-stage burner, which are operated in an amount of more than 2000 units in Ukraine and the CIS countries is presented. The installed two-stage burner devices for combustion of natural gas require immediate reconstruction with bringing their indicators to the calculated ones at the first stage. The modernization of the exist ing two-stage burners is possible to achieve the readings of the EU emissions directive 2010/75/EU was shown. The most promising technologies for further reducing the level of nitrogen oxide emissions less than 100 mg/Nm3 (3% O2, dry gases) when burning natural gas were shown. Bibl. 38, Fig.4, Tab. 1.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82269246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.33070/ETARS.3.2019.06
S. V. Petrov, S. Bondarenko, A. Pastushenko, K. Vovnenko
The urgency of work is connected with the need to find alternative methods of water purification from persistent organic pollutants, which will satisfy the level of quality of treated water and will meet modern environmental requirements and sanitary norms of sewage quality and electrical energy. The efficiency of the method of electrodischarge water purification from persistent organic pollutants has been experimentally determined. The SCADA-system, which provides data processing and management of water treatment processes from persistent organic pollutants, is developed. Digitizing oscillograms using the Origin Pro environment. The values of power, energy consumption for water purification from phenol are determined. Determine the efficiency of the plant to clean water from persistent organic pollutants. To visualize and control the process of water purification, a technological scheme was built in the environment of Trace Mode 6. Bibl. 13, Fig. 10. Tab. 3.
{"title":"PLASMA-CHEMICAL PROCESS CONTROL OF WATER PURIFICATION FROM PERSISTENT ORGANIC POLLUTION","authors":"S. V. Petrov, S. Bondarenko, A. Pastushenko, K. Vovnenko","doi":"10.33070/ETARS.3.2019.06","DOIUrl":"https://doi.org/10.33070/ETARS.3.2019.06","url":null,"abstract":"The urgency of work is connected with the need to find alternative methods of water purification from persistent organic pollutants, which will satisfy the level of quality of treated water and will meet modern environmental requirements and sanitary norms of sewage quality and electrical energy. The efficiency of the method of electrodischarge water purification from persistent organic pollutants has been experimentally determined. The SCADA-system, which provides data processing and management of water treatment processes from persistent organic pollutants, is developed. Digitizing oscillograms using the Origin Pro environment. The values of power, energy consumption for water purification from phenol are determined. Determine the efficiency of the plant to clean water from persistent organic pollutants. To visualize and control the process of water purification, a technological scheme was built in the environment of Trace Mode 6. Bibl. 13, Fig. 10. Tab. 3.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85311671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.33070/ETARS.3.2019.05
K. Kostohryz, Yu.I. Hvastuhin, V. Orlyk, V. Sobchenko, O. Maksymuk
The article contains information on the work of the department of thermal heterogeneous processes of the Institute of Gas of the NAS of Ukraine over the past ten years, devoted to the development of scientific and technological foundations for the thermal treatment of dispersed materials. The problem of the efficient use of natural resources in connection with the reduction of fossil energy resources while increasing their demand to meet the growing needs of production is discussed. The results of mathematical modeling of the heat treatment of dispersed materials are presented — a detailed study of the co-combustion of wood particles with natural gas is carried out taking into account the main stages of the process, a methodology for the qualitative and quantitative analysis of the process of dioxin formation during high-temperature processing of chlorine-containing waste is described. The possibilities of using carbonate sorbents for trapping sulfur compounds are evaluated. A detailed mathematical description of the endothermic process of calcining limestone particles during its passage through the high-temperature zone of the heated inert particles of the fluidized bed is carried out. The technology of three-stage processing of material in fluidized-bed apparatuses and the design of a reverting furnace combined with a recuperator, which is an element of energy conservation, have been developed. Created and implemented technologies in production of heat-insulating materials from hydrosilicates, perlite, mineral wool products. Schemes, dependencies of technological parameters, technical characteristics and general view of the implemented developments are given. Ref. 27, Fig. 10, Tab. 2.
{"title":"DEVELOPMENT OF THERMAL TECHNOLOGY FOR DISPERSED MATERIALS PROCESSING","authors":"K. Kostohryz, Yu.I. Hvastuhin, V. Orlyk, V. Sobchenko, O. Maksymuk","doi":"10.33070/ETARS.3.2019.05","DOIUrl":"https://doi.org/10.33070/ETARS.3.2019.05","url":null,"abstract":"The article contains information on the work of the department of thermal heterogeneous processes of the Institute of Gas of the NAS of Ukraine over the past ten years, devoted to the development of scientific and technological foundations for the thermal treatment of dispersed materials. The problem of the efficient use of natural resources in connection with the reduction of fossil energy resources while increasing their demand to meet the growing needs of production is discussed. The results of mathematical modeling of the heat treatment of dispersed materials are presented — a detailed study of the co-combustion of wood particles with natural gas is carried out taking into account the main stages of the process, a methodology for the qualitative and quantitative analysis of the process of dioxin formation during high-temperature processing of chlorine-containing waste is described. The possibilities of using carbonate sorbents for trapping sulfur compounds are evaluated. A detailed mathematical description of the endothermic process of calcining limestone particles during its passage through the high-temperature zone of the heated inert particles of the fluidized bed is carried out. The technology of three-stage processing of material in fluidized-bed apparatuses and the design of a reverting furnace combined with a recuperator, which is an element of energy conservation, have been developed. Created and implemented technologies in production of heat-insulating materials from hydrosilicates, perlite, mineral wool products. Schemes, dependencies of technological parameters, technical characteristics and general view of the implemented developments are given. Ref. 27, Fig. 10, Tab. 2.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77616994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.33070/ETARS.3.2019.03
I. Karp, K. Pyanykh
Technological aspects of energy use of solid waste and their constituents and possibility of applying certain technologies in Ukraine are analyzed. Global trends in waste management technologies are identified. When organizing waste sorting, half of their energy potential can be used, which is estimated to be 1.5 billion m3 of natural gas equivalent in Ukraine. Share of food waste is close to 40 %. It is advisable to recycle them in biogas and biomethane mixtures with agricultural waste and energy plants. Biomethane production can be increased in several times. Electricity and heat production from biogas require government assistance in form of special tariffs. Biomethane is being used alongside natural gas in compressed and liquefied state as a motor fuel. Biogas complexes are used as balancing power of grids. The most common technology for utilizing the energy potential of municipal solid waste is incineration. Emissions systems for waste incineration plants have reached a level of perfection that allows them to be placed close to residential areas. Ref. 15, Fig. 6, Tab. 2.
{"title":"TECHNOLOGICAL ASPECTS OF ENERGY USE OF SOLID HOUSEHOLD WASTE","authors":"I. Karp, K. Pyanykh","doi":"10.33070/ETARS.3.2019.03","DOIUrl":"https://doi.org/10.33070/ETARS.3.2019.03","url":null,"abstract":"Technological aspects of energy use of solid waste and their constituents and possibility of applying certain technologies in Ukraine are analyzed. Global trends in waste management technologies are identified. When organizing waste sorting, half of their energy potential can be used, which is estimated to be 1.5 billion m3 of natural gas equivalent in Ukraine. Share of food waste is close to 40 %. It is advisable to recycle them in biogas and biomethane mixtures with agricultural waste and energy plants. Biomethane production can be increased in several times. Electricity and heat production from biogas require government assistance in form of special tariffs. Biomethane is being used alongside natural gas in compressed and liquefied state as a motor fuel. Biogas complexes are used as balancing power of grids. The most common technology for utilizing the energy potential of municipal solid waste is incineration. Emissions systems for waste incineration plants have reached a level of perfection that allows them to be placed close to residential areas. Ref. 15, Fig. 6, Tab. 2.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"548 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77137574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-20DOI: 10.33070/ETARS.3.2019.04
V. Bezuglyi
It was found out that the partial atomic function of Gibbs of mixture may be considered in the chemical thermodynamics context as transfer characteristic of the chemical element of mixture. This characteristic was named in our previous works as «the potential of the mixture chemical element». It was shown that chemical elements potentials play a role of so-called «undefined Lagrange multipliers» in the system of equations for calculation of states equilibrium properties of gaseous mixture by certain values of temperature, pressure and chemical elements composition. Ref. 9.
{"title":"THE POTENTIALS OF THE CHEMICAL ELEMENTS OF GASEOUS MIXTURE IN THE THERMODYNAMICAL CONTEXT","authors":"V. Bezuglyi","doi":"10.33070/ETARS.3.2019.04","DOIUrl":"https://doi.org/10.33070/ETARS.3.2019.04","url":null,"abstract":"It was found out that the partial atomic function of Gibbs of mixture may be considered in the chemical thermodynamics context as transfer characteristic of the chemical element of mixture. This characteristic was named in our previous works as «the potential of the mixture chemical element». It was shown that chemical elements potentials play a role of so-called «undefined Lagrange multipliers» in the system of equations for calculation of states equilibrium properties of gaseous mixture by certain values of temperature, pressure and chemical elements composition. Ref. 9.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79093099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.33070/ETARS.2.2019.06
G. Tulsky, L. Lyashok, M. P. Osmanova, A. Soboļeva
Widespread use of specialized tools, the component part of which is tungsten, leads to the accumulation of its secondary raw materials (worked tools, cutters, drills, etc.). That is why there is a need to create technologies for recycling of the demanded metals, in particular tungsten. The purpose of this work is to study the anode behavior of carbide pseudoalloy type WC-Co in solutions of nitric acid with the addition of fluoride acid to obtain, as a target product, higher tungsten oxide in one stage. The corrosion behavior of carbide type pseudoalloy in acid solutions has been studied, and it has been found that the highest oxidation rate occurs in a concentrated solution of nitric acid. In order to accelerate the process and to increase the yield on the substance, adding to the fluoride acid working electrolyte has been proposed. As a result of the researches, it has been found that the behavior of the dissolution of pseudoalloys of the carbide type is characterized by the properties of the main component — tungsten. An electrolyte for obtaining higher tungsten oxide in one stage has been proposed. Bibl. 10, Fig. 1, Tab. 1.
{"title":"ELECTRO-CHEMICAL PRODUCTION OF TUNGSTEN OXIDE FROM PSEUDO-ALLOY CARBIDE TYPE WC-Co","authors":"G. Tulsky, L. Lyashok, M. P. Osmanova, A. Soboļeva","doi":"10.33070/ETARS.2.2019.06","DOIUrl":"https://doi.org/10.33070/ETARS.2.2019.06","url":null,"abstract":"Widespread use of specialized tools, the component part of which is tungsten, leads to the accumulation of its secondary raw materials (worked tools, cutters, drills, etc.). That is why there is a need to create technologies for recycling of the demanded metals, in particular tungsten. The purpose of this work is to study the anode behavior of carbide pseudoalloy type WC-Co in solutions of nitric acid with the addition of fluoride acid to obtain, as a target product, higher tungsten oxide in one stage. The corrosion behavior of carbide type pseudoalloy in acid solutions has been studied, and it has been found that the highest oxidation rate occurs in a concentrated solution of nitric acid. In order to accelerate the process and to increase the yield on the substance, adding to the fluoride acid working electrolyte has been proposed. As a result of the researches, it has been found that the behavior of the dissolution of pseudoalloys of the carbide type is characterized by the properties of the main component — tungsten. An electrolyte for obtaining higher tungsten oxide in one stage has been proposed. Bibl. 10, Fig. 1, Tab. 1.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76957147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.33070/ETARS.2.2019.03
Y. Nikitin, O. Dutka
The mathematical model that allows for a comparative analysis of the technical and economic characteristics of the three scenarios of the thermal modernization district heating system: the replacement of boilers, heat networks and pumps, the replacement of these elements in combination with thermal modernization of buildings, as well as a scenario that includes the implementation of all previous measures and the installation of Individual Heat Points in buildings (complex modernization). The advantages of the complex modernization on the horizon of planning for 50 years have been shown. Calculated analysis of the influence of various factors on the preference for this scenario has been carried out. The developed model can be used for the preparation of feasibility studies of projects energy efficient modernization of district heating systems and buildings. Bibl. 5, Fig. 8, Tab. 2.
{"title":"THE COMPLEX APPROACH TO THE MODERNIZATION OF BOILERS, HEAT NETWORKS AND CONNECTED BUILDINGS","authors":"Y. Nikitin, O. Dutka","doi":"10.33070/ETARS.2.2019.03","DOIUrl":"https://doi.org/10.33070/ETARS.2.2019.03","url":null,"abstract":"The mathematical model that allows for a comparative analysis of the technical and economic characteristics of the three scenarios of the thermal modernization district heating system: the replacement of boilers, heat networks and pumps, the replacement of these elements in combination with thermal modernization of buildings, as well as a scenario that includes the implementation of all previous measures and the installation of Individual Heat Points in buildings (complex modernization). The advantages of the complex modernization on the horizon of planning for 50 years have been shown. Calculated analysis of the influence of various factors on the preference for this scenario has been carried out. The developed model can be used for the preparation of feasibility studies of projects energy efficient modernization of district heating systems and buildings. Bibl. 5, Fig. 8, Tab. 2.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87339882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.33070/ETARS.2.2019.05
I. Karp, K. Pyanykh, K. Pianykh
Sewage sludge utilization technologies must meet two requirements: the use of energy potential and ensuring that the products of their processing are not negatively affected by the environment. New technologies for the disposal of sediments that meet these requirements are being developed: pyrolysis, hydro pyrolysis, combined processes of fermentation and gasification, polygeneration, steam conversion, gasification of mixtures with other fuels, thermocatalytic reforming, three-stage gasification. Most of these technologies have not yet been commercialized. The energy potential of «fresh» sediments in Ukraine is estimated at 446 thousand tons of conditional fuel. Its use for the electricity production and thermal energy and secondary liquid and solid fuels is appropriate as being consistent with the global trend of decentralized energy development. The economically efficient, acceptable for Ukrainian conditions is the technology used to dispose of sediment, is their joint combustion with other solid fuels and waste in boilers of power stations and in cement kilns. For objects of decentralized energy, it should be preferred to the processes of gasification or pyrolysis of sewage sludge. Composting technology is acceptable to dispose of accumulated precipitates. Bibl. 27, Fig. 5, Tab. 3.
{"title":"UTILIZATION OF SEWAGE SLUDGE","authors":"I. Karp, K. Pyanykh, K. Pianykh","doi":"10.33070/ETARS.2.2019.05","DOIUrl":"https://doi.org/10.33070/ETARS.2.2019.05","url":null,"abstract":"Sewage sludge utilization technologies must meet two requirements: the use of energy potential and ensuring that the products of their processing are not negatively affected by the environment. New technologies for the disposal of sediments that meet these requirements are being developed: pyrolysis, hydro pyrolysis, combined processes of fermentation and gasification, polygeneration, steam conversion, gasification of mixtures with other fuels, thermocatalytic reforming, three-stage gasification. Most of these technologies have not yet been commercialized. The energy potential of «fresh» sediments in Ukraine is estimated at 446 thousand tons of conditional fuel. Its use for the electricity production and thermal energy and secondary liquid and solid fuels is appropriate as being consistent with the global trend of decentralized energy development. The economically efficient, acceptable for Ukrainian conditions is the technology used to dispose of sediment, is their joint combustion with other solid fuels and waste in boilers of power stations and in cement kilns. For objects of decentralized energy, it should be preferred to the processes of gasification or pyrolysis of sewage sludge. Composting technology is acceptable to dispose of accumulated precipitates. Bibl. 27, Fig. 5, Tab. 3.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79837735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-20DOI: 10.33070/ETARS.2.2019.04
G. Kosmambetova, A. Trypolskyi, S. Soloviev, A. Kapran, P. Strizhak
Multicomponent CoO-CeO2(SrO)-Pd(Pt) catalysts on ceramic monoliths of a honeycomb structure (synthetic cordierite) were shown to be efficient for the deep oxidation of methane. Based on the results of the studying the effect of Al2O3 as a second carrier-substrate, the content of CoO, modifying/promoting additives of strontium and cerium oxides, palladium, platinum on catalyst activities, it was found that a 4,9%CoO-4,9%CeO2-0,1%Pd/cordierite specimen is optimal for use in catalytic heat generators. The catalyst of this composition, with increased mechanical strength, thermal resistance and resistance to carbonization, provides CO free oxidation of methane in the stoichiometric mixture with oxygen. Bibl. 33, Fig. 4.
{"title":"DEEP OXIDATION OF METHANE OVER MULTICOMPONENT CoO BASED CATALYSTS ON CERAMIC MONOLITHS","authors":"G. Kosmambetova, A. Trypolskyi, S. Soloviev, A. Kapran, P. Strizhak","doi":"10.33070/ETARS.2.2019.04","DOIUrl":"https://doi.org/10.33070/ETARS.2.2019.04","url":null,"abstract":"Multicomponent CoO-CeO2(SrO)-Pd(Pt) catalysts on ceramic monoliths of a honeycomb structure (synthetic cordierite) were shown to be efficient for the deep oxidation of methane. Based on the results of the studying the effect of Al2O3 as a second carrier-substrate, the content of CoO, modifying/promoting additives of strontium and cerium oxides, palladium, platinum on catalyst activities, it was found that a 4,9%CoO-4,9%CeO2-0,1%Pd/cordierite specimen is optimal for use in catalytic heat generators. The catalyst of this composition, with increased mechanical strength, thermal resistance and resistance to carbonization, provides CO free oxidation of methane in the stoichiometric mixture with oxygen. Bibl. 33, Fig. 4.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86758042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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