Pub Date : 2018-06-25DOI: 10.33070/ETARS.2.2018.06
K. Simeiko, M. Sidorenko, R. Chumak
The main purpose of this paper is to investigate the concept of a heat treatment of a small amount of solid material with the maximum contact of the gas and solid material. The solution of this problem consists in passing the process in a fluidized bed. However, the key issue of this solution is the problem of entrainment of solid material. Among feasible ways of the fluid bed hydrodynamics creation is a sound waves transmission through a solid granular material. A visual study on the fluid bed hydrodynamics creation with sound waves was conducted. The estimation of the impact of the trajectory of the particles on the thermophysical properties of the fluidized system was determined. The exploitation of sound waves should increase the intensity of heat exchange inside and between the solid and gas phases. Reactor design scheme for pyrocarbon coatings creation was developed. This scheme implies a small amount of material to be treated. The results obtained can be subsequently applied in the process of developing new fluidized bed apparatus, when the usage of a gas or a liquid as a fluidizing agent is technically impossible (or insufficiently). The prospects for further research include homogenization of the agglomerate layer by means of sound waves. Bibl. 9, Fig. 4.
{"title":"INVESTIGATION OF THE INFLUENCE OF MECHANICAL-VIBRATIONAL SOUND ON HYDRODYNAMICS OF A FLUIDIZED BED","authors":"K. Simeiko, M. Sidorenko, R. Chumak","doi":"10.33070/ETARS.2.2018.06","DOIUrl":"https://doi.org/10.33070/ETARS.2.2018.06","url":null,"abstract":"The main purpose of this paper is to investigate the concept of a heat treatment of a small amount of solid material with the maximum contact of the gas and solid material. The solution of this problem consists in passing the process in a fluidized bed. However, the key issue of this solution is the problem of entrainment of solid material. Among feasible ways of the fluid bed hydrodynamics creation is a sound waves transmission through a solid granular material. A visual study on the fluid bed hydrodynamics creation with sound waves was conducted. The estimation of the impact of the trajectory of the particles on the thermophysical properties of the fluidized system was determined. The exploitation of sound waves should increase the intensity of heat exchange inside and between the solid and gas phases. Reactor design scheme for pyrocarbon coatings creation was developed. This scheme implies a small amount of material to be treated. The results obtained can be subsequently applied in the process of developing new fluidized bed apparatus, when the usage of a gas or a liquid as a fluidizing agent is technically impossible (or insufficiently). The prospects for further research include homogenization of the agglomerate layer by means of sound waves. Bibl. 9, Fig. 4.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77311929","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 : 2018-06-25DOI: 10.33070/ETARS.2.2018.04
V. V. Alekseenko, O. Sezonenko, O. Vasechko
Methods of reduction of temperature of exhausted gases for incinerators and features of their practical application were considered. Conditions of effective usage of recuperation of exhaust gases heat during thermal disposal of waste were considered. Methods of recuperation of exhaust gases heat of medical institutions’ waste were adduced and character ized. Evaluation of potential value of heat in exhaust gases of combustion of medical institutions’ waste was produced. Nonstationarity of the development of heat, typical of incinerators of medical institutions, which influence on coordination with load curve of potential heat consumer, was considered. The method of heat recuperation by heating of air, which is fed directly into incinerator, was offered. The constructive realization of this method and parameters of recuperator under working loads of incinerator were presented. Bibl. 11, Fig. 4, Tab. 2.
{"title":"RECUPERATION OF HEAT OF INCINERATORS FOR WASTE OF MEDICAL INSTITUTIONS","authors":"V. V. Alekseenko, O. Sezonenko, O. Vasechko","doi":"10.33070/ETARS.2.2018.04","DOIUrl":"https://doi.org/10.33070/ETARS.2.2018.04","url":null,"abstract":"Methods of reduction of temperature of exhausted gases for incinerators and features of their practical application were considered. Conditions of effective usage of recuperation of exhaust gases heat during thermal disposal of waste were considered. Methods of recuperation of exhaust gases heat of medical institutions’ waste were adduced and character ized. Evaluation of potential value of heat in exhaust gases of combustion of medical institutions’ waste was produced. Nonstationarity of the development of heat, typical of incinerators of medical institutions, which influence on coordination with load curve of potential heat consumer, was considered. The method of heat recuperation by heating of air, which is fed directly into incinerator, was offered. The constructive realization of this method and parameters of recuperator under working loads of incinerator were presented. Bibl. 11, Fig. 4, Tab. 2.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82130971","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 : 2018-06-25DOI: 10.33070/ETARS.2.2018.08
B. Soroka, A. Kornienko, V. Kudryavtsev, R. S. Karabchievskaya
The state-of-the art the problem concerning reduction the NOx formation by humidification the combustion air is briefly consideredan, alized and discussed. The proper technologies of combustion the wet inflammable mixtures are considered for the cases of using the water vapour pump (WVP), Maisotsenko cycle (M-cycle) and suitable facilities along with the cases of operation the combined systems with heat recovery due transfer the water vapour energy to working medium (combustion products). Both environmental and power advantages of the systems of «wet combustion» have been demonstrated accordingly data collected in some earlier researches. The results of experimental researches of burning process under conditions of input the water vapour into the gas–air mixture to be supplied for combustion are presented in the paper in frame of consideration the results of own authors’ tests. Given information concerning the investigation of environmental consequences of impact the water vapour within the inflammable mixture on nitrogen oxides NOx value in combustion products ([NOx] concentration) has been generalized. The techniques of experimental researches, the design of firing rig and instrumentation, used in the tests have been described. The distinction of ignition the natural gas-air mixture and of stable flame maintenance for case of free vertical flame operation have been evaluated in dependence on inflammable mixture’s composition along with studying of impact a moisture content — H2O concentration in initial gas-air mixture. Comparative evaluations of NO value within an open flame in dependence on temperature and on composition of initial natural gas — air mixture (ratio «air : gas») have been carried out. An opportunity of two-times reduction of maximum NOmax concentration within a flame by initial gas-air mixture enrichment with water vapour has been proven. Bibl. 23, Fig.10, Tab.1.
{"title":"REDUCTION OF NITROGEN OXIDES EFFLUENTS WITHIN AN OPEN FLAME BY INPUT THE WATER VAPOUR INTO COMBUSTION AIR FLOW","authors":"B. Soroka, A. Kornienko, V. Kudryavtsev, R. S. Karabchievskaya","doi":"10.33070/ETARS.2.2018.08","DOIUrl":"https://doi.org/10.33070/ETARS.2.2018.08","url":null,"abstract":"The state-of-the art the problem concerning reduction the NOx formation by humidification the combustion air is briefly consideredan, alized and discussed. The proper technologies of combustion the wet inflammable mixtures are considered for the cases of using the water vapour pump (WVP), Maisotsenko cycle (M-cycle) and suitable facilities along with the cases of operation the combined systems with heat recovery due transfer the water vapour energy to working medium (combustion products). Both environmental and power advantages of the systems of «wet combustion» have been demonstrated accordingly data collected in some earlier researches. The results of experimental researches of burning process under conditions of input the water vapour into the gas–air mixture to be supplied for combustion are presented in the paper in frame of consideration the results of own authors’ tests. Given information concerning the investigation of environmental consequences of impact the water vapour within the inflammable mixture on nitrogen oxides NOx value in combustion products ([NOx] concentration) has been generalized. The techniques of experimental researches, the design of firing rig and instrumentation, used in the tests have been described. The distinction of ignition the natural gas-air mixture and of stable flame maintenance for case of free vertical flame operation have been evaluated in dependence on inflammable mixture’s composition along with studying of impact a moisture content — H2O concentration in initial gas-air mixture. Comparative evaluations of NO value within an open flame in dependence on temperature and on composition of initial natural gas — air mixture (ratio «air : gas») have been carried out. An opportunity of two-times reduction of maximum NOmax concentration within a flame by initial gas-air mixture enrichment with water vapour has been proven. Bibl. 23, Fig.10, Tab.1.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75876870","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 : 2018-06-25DOI: 10.33070/ETARS.2.2018.03
V. Zhovtyansky, E. Kolesnikova, M. Yakymovych, P. A. Seredenko
The issues of determination calorific value as well as the enthalpy of formation of sewage sludge are deeply analyzed further to previous publications. Taking into account this analysis, the indicators, the indicators of the efficiency of the sewage sludge gasification process have been clarified and a comparison of the plasma-steam-oxygen and plasmasteamair gasification technologies has been made. At the same time, on the basis of previous studies, the influence on the efficiency indices of not only ballast nitrogen, but also nitrogen oxides is analyzed. Their concentrations cannot be determined on the basis of simple thermodynamic ratios. Bibl 38, Fig. 6, Tab. 1.
{"title":"THE GENERAL PRINCIPLES OF WASTE PROCESSING WITH RECOVERY OF THEIR ENERGY POTENTIAL ON THE BASIS OF PLASMA TECHNOLOGIES. PART III. COMPARATIVE ANALYSIS OF THE OXYGEN AND AIR BLOWING INFLUENCE AND THE ROLE OF CALORIFIC CONTENT OF SEWAGE SLUDGE","authors":"V. Zhovtyansky, E. Kolesnikova, M. Yakymovych, P. A. Seredenko","doi":"10.33070/ETARS.2.2018.03","DOIUrl":"https://doi.org/10.33070/ETARS.2.2018.03","url":null,"abstract":"The issues of determination calorific value as well as the enthalpy of formation of sewage sludge are deeply analyzed further to previous publications. Taking into account this analysis, the indicators, the indicators of the efficiency of the sewage sludge gasification process have been clarified and a comparison of the plasma-steam-oxygen and plasmasteamair gasification technologies has been made. At the same time, on the basis of previous studies, the influence on the efficiency indices of not only ballast nitrogen, but also nitrogen oxides is analyzed. Their concentrations cannot be determined on the basis of simple thermodynamic ratios. Bibl 38, Fig. 6, Tab. 1.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77470258","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 : 2018-06-25DOI: 10.33070/etars.2.2018.01
A. S. Makarov
The perspective of obtaining fuels based on different degrees of metamorphism coals and organic waste has been considered. Coal-water fuel is a highly concentrated dispersed system consisting of a highly dispersed coal fraction and water with additives of plasticizers and stabilizers. Using these additives in the slurry gives possibility to reduce their viscosity, as well as to provide aggregative and sedimentation stability at higher concentrations of the solid phase. To ensure the ecological safety of combustion products in suspension, if it is necessary, products are added such as desulfurizers, corrosion inhibitors. The resulting slurry fuels are highly caloric and environmentally friendly. The suspension fuel caloric content can reach and even exceed the coal energy intensity. Due to this, as one of the components of dispersion medium industrial waste can be used. All harmful organic components decompose and burn at high temperatures (above 1200 °C). Bibl. 25.
{"title":"PROSPECTS FOR THE DEVELOPMENT AND USE OF WATER-COOLED FUEL (REVIEW)","authors":"A. S. Makarov","doi":"10.33070/etars.2.2018.01","DOIUrl":"https://doi.org/10.33070/etars.2.2018.01","url":null,"abstract":"The perspective of obtaining fuels based on different degrees of metamorphism coals and organic waste has been considered. Coal-water fuel is a highly concentrated dispersed system consisting of a highly dispersed coal fraction and water with additives of plasticizers and stabilizers. Using these additives in the slurry gives possibility to reduce their viscosity, as well as to provide aggregative and sedimentation stability at higher concentrations of the solid phase. To ensure the ecological safety of combustion products in suspension, if it is necessary, products are added such as desulfurizers, corrosion inhibitors. The resulting slurry fuels are highly caloric and environmentally friendly. The suspension fuel caloric content can reach and even exceed the coal energy intensity. Due to this, as one of the components of dispersion medium industrial waste can be used. All harmful organic components decompose and burn at high temperatures (above 1200 °C). Bibl. 25.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82133691","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 : 2018-06-25DOI: 10.33070/ETARS.2.2018.07
Z. Korzh
The paper analyses the peculiarities of waste management in Zhytomyr region over the last 5 years. There was a significant decrease (up to 40 %) in the amount of wastes belonging to the hazard Classes I–IV as well as almost 40 times reduction in waste products of the hazard Class III. The largest amount of waste products of the hazard Classes I–IV was formed in Popilnia district, Andrushivka district and Zhytomyr. The smallest amount of these waste products was found in Pulyny, Brusyliv and Baranivka districts. The highest amount of available waste products was registered in Zhytomyr, in Korosten and Ovruch districts respectively. Berdychiv, Malyn and Brusyliv districts were characterized as those ones generating the least amount of waste products. The waste products of mining industry and wastes of organic nature, videlicet wood waste, plant and animal waste account for 28 % of all the wastes generated for the period of 2016. Household wastes, other mineral wastes, and dead rock account for 22 %, 21 % and 16 % respectively. The lack of properly functioning infrastructure (first of all, the system of separate collection) causes annual losses of million tons of valuable resources contained in waste products. The simultaneous need of domestic processing enterprises for such raw materials is solved nowadays by means of purchasing such recyclable materials from other countries. The issue of further implementation of low-waste technologies as well as the improvement of regulatory and legal support in the field of waste management need urgent solving. Bibl. 16, Fig. 1, Tab. 2.
{"title":"THE PECULIARITIES OF WASTE MANAGEMENT IN ZHYTOMYR REGION","authors":"Z. Korzh","doi":"10.33070/ETARS.2.2018.07","DOIUrl":"https://doi.org/10.33070/ETARS.2.2018.07","url":null,"abstract":"The paper analyses the peculiarities of waste management in Zhytomyr region over the last 5 years. There was a significant decrease (up to 40 %) in the amount of wastes belonging to the hazard Classes I–IV as well as almost 40 times reduction in waste products of the hazard Class III. The largest amount of waste products of the hazard Classes I–IV was formed in Popilnia district, Andrushivka district and Zhytomyr. The smallest amount of these waste products was found in Pulyny, Brusyliv and Baranivka districts. The highest amount of available waste products was registered in Zhytomyr, in Korosten and Ovruch districts respectively. Berdychiv, Malyn and Brusyliv districts were characterized as those ones generating the least amount of waste products. The waste products of mining industry and wastes of organic nature, videlicet wood waste, plant and animal waste account for 28 % of all the wastes generated for the period of 2016. Household wastes, other mineral wastes, and dead rock account for 22 %, 21 % and 16 % respectively. The lack of properly functioning infrastructure (first of all, the system of separate collection) causes annual losses of million tons of valuable resources contained in waste products. The simultaneous need of domestic processing enterprises for such raw materials is solved nowadays by means of purchasing such recyclable materials from other countries. The issue of further implementation of low-waste technologies as well as the improvement of regulatory and legal support in the field of waste management need urgent solving. Bibl. 16, Fig. 1, Tab. 2.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77941247","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 : 2018-06-25DOI: 10.33070/ETARS.2.2018.02
V. Kljus, S. V. Kljus, G. A. Chetverik, V. P. Demchina
As evidenced by our works as well as a number of other researches, sewage sludge is a renewable biological fuel. But the sludge use is quite problematic due to its high humidity and ash content. To reduce the moisture of the initial mass of the sludge, it is recommended to add dry finely dispersed biomass (saw dust, chopped straw). To conduct the research, we selected the long-term storage sludge samples of Bortnichi Activate Sludge Plant of Kiev city and the fresh sludge of the Lvov city purification facilities to produce the granules of 6 mm in diameter. The gaseous conversion of the granules was completed in the two stages according to the «backward heat wave» technology. As it has been established, the coke ash residue accounting for 53–63 % of the output sinters at the temperature of above 700 °С. The research has identified the gaseous conversion parameters, the composition and the combustion heat of the fuel gas. The recommendations pertaining to use of the fuel gas and the coke ash residue have been designed. Accordingly, the research conducted hereunder has discovered the possibility of full and partial gaseous conversion of the sludge granules using the air blast. Bibl. 10, Fig. 5, Tab. 2.
{"title":"GASIFICATION OF SEWAGE SLUDGE","authors":"V. Kljus, S. V. Kljus, G. A. Chetverik, V. P. Demchina","doi":"10.33070/ETARS.2.2018.02","DOIUrl":"https://doi.org/10.33070/ETARS.2.2018.02","url":null,"abstract":"As evidenced by our works as well as a number of other researches, sewage sludge is a renewable biological fuel. But the sludge use is quite problematic due to its high humidity and ash content. To reduce the moisture of the initial mass of the sludge, it is recommended to add dry finely dispersed biomass (saw dust, chopped straw). To conduct the research, we selected the long-term storage sludge samples of Bortnichi Activate Sludge Plant of Kiev city and the fresh sludge of the Lvov city purification facilities to produce the granules of 6 mm in diameter. The gaseous conversion of the granules was completed in the two stages according to the «backward heat wave» technology. As it has been established, the coke ash residue accounting for 53–63 % of the output sinters at the temperature of above 700 °С. The research has identified the gaseous conversion parameters, the composition and the combustion heat of the fuel gas. The recommendations pertaining to use of the fuel gas and the coke ash residue have been designed. Accordingly, the research conducted hereunder has discovered the possibility of full and partial gaseous conversion of the sludge granules using the air blast. Bibl. 10, Fig. 5, Tab. 2.","PeriodicalId":11558,"journal":{"name":"Energy Technologies & Resource Saving","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89213942","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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