scholarly journals THE EFFECT OF MARINE POWER PLANTS EXHAUST GASES TEMPERATURE ON THE QUALITY OF THEIR CLEANING USING THE CATALYTIC NEUTRALIZATION METHOD

2020 ◽  
pp. 167-174
Author(s):  
Gennady V. Medvedev ◽  
Mikhail Y. Khramov
Keyword(s):  
Power Plants ◽  
Negative Impact ◽  
Catalytic Converter ◽  
Quantitative Composition ◽  
Exhaust Gases ◽  
Environmental Objects ◽  
Catalytic Material ◽  
Harmful Emissions ◽  
Degree Of Purification

The use of catalytic neutralization for the purification of harmful emissions from ship power plants can significantly reduce the negative impact of exhaust gases on all environmental objects. The attractiveness of the proposed method lies in the possibility of selecting the appropriate composition of the catalytic material depending on the required degree of purification.The functional properties of catalytic materials are largely determined by the qualitative and quantitative composition of the material used, as well as the conditions of its operation - the temperature regime.In order to determine the acceptable composition of the catalytic converter material, we made an analyses of materials of various compositions. The optimum degree of purification was achieved on materials containing valuable components (rhodium, iridium, palladium). However, the issue of reducing the treatment system cost is important. So, the possibility of replacing such metals with ore grindings (bastnesite, loparite) has been studied in the paper.

scholarly journals ASSESSMENT OF THE DEPENDENCE OF SHIP POWER PLANTS EXHAUST GASES PURIFICATION DEGREE ON CORROSION RESISTANCE AND THE AMOUNT OF THE CATALYTIC MATERIAL COMPOSITION

2020 ◽  
pp. 183-192
Author(s):  
Nina N. Gorlova ◽  
Gennady V. Medvedev
Keyword(s):  
Power Plants ◽  
Negative Impact ◽  
Cost Effective ◽  
Exhaust Gas ◽  
Gas Purification ◽  
Exhaust Gases ◽  
Catalytic Material ◽  
Significant Negative Impact ◽  
Sulfur And Nitrogen Compounds ◽  
Degree Of Purification

A significant negative impact on the environmental components (atmosphere and hydrosphere) is provided by water transport as a result of the use of “heavy” fuels and the lack of effective exhaust gas purification systems. One of the technologically and cost-effective is the cleaning of spent marine power plants using catalytic converters. An optimal degree of purification of exhaust gases from sulfur and nitrogen compounds is ensured by using catalytic materials in porous permeable SHS purification systems.

scholarly journals THE USE OF CATALYTIC NEUTRALIZATION FOR THE PURIFICATION OF EXHAUST GASES FROM MARINE POWER PLANTS IN AN AGGRESSIVE ENVIRONMENT

2020 ◽  
pp. 157-166
Author(s):  
Nina N. Gorlova
Keyword(s):  
Power Plants ◽  
Material Selection ◽  
Point Of View ◽  
Quantitative Composition ◽  
Qualitative And Quantitative ◽  
Aggressive Environment ◽  
Catalytic Material ◽  
The Cost ◽  
Selection Of

    Among the methods used, the most effective, from the point of view of the quality of cleaning from the main harmful substances, is catalytic neutralization. The effectiveness of using this method is largely determined by the properties and characteristics of the used catalytic material. Selection of the appropriate composition determines the provision of physical, physico-mechanical and corrosive properties of the used catalytic materials. In this regard, the possibilities of using steel oxide and molding clay as basic components in the charge of the material were studied. In order to reduce the cost of the treatment system, the possibility of replacing valuable expensive components with ore mills of the appropriate composition was considered.As a result of the studies, the optimal qualitative and quantitative composition of the charge of the catalytic material was determined.

REDUCTION OF EXTERNAL NOISE VEHICLE of SPAI “BOHDANA” ON THE BASIS OF THE KrAZ-63221 IMPROVED TWO-CHAMBER REACTIVE NOISE SILENCER

2021 ◽  
pp. 29-35
Author(s):  
Volodymyr Fedorov ◽  
Halyna Filipova ◽  
Vasyl Yanovsky
Keyword(s):  
Negative Impact ◽  
Combustion Engine ◽  
External Noise ◽  
Independent State ◽  
Exhaust Gases ◽  
Military Equipment ◽  
Military Vehicles ◽  
Internal Partition ◽  
Two Parameters

High-quality military equipment is a vital necessity for the independent state of Ukraine, especially in the conditions of aggravation of the situation at the front. One of the parameters that determines the quality of military vehicles is the level of external noise. The external noise of this type of car, in addition to the negative impact on human health (including the crew), is also an unmasking factor. In order to reduce the level of external noise of SPAI “Bogdan” on the basis of the chassis KrAZ-63221, the use of an advanced two-chamber jet muffler of the exhaust gases of the internal combustion engine is proposed. The known two-chamber jet muffler of exhaust gases has a fixed internal partition. Its acoustic efficiency is described by a known formula. It is proposed to make the inner partition of the muffler movable. This need arises from the fact of constant changes in the speed of the engine crankshaft during the movement of the car. The change in the position of the inner partition is consistent with the change in the speed of the crankshaft, because these two processes are synchronized. The mathematical package IDL was used to analyze the known formula for the efficiency of a two-chamber jet exhaust muffler of an engine with a movable inner partition. Given the need to show the dependence of the efficiency of the muffler simultaneously on two parameters – the speed of the crankshaft and the position of the movable inner partition of the muffler – the method of color coding was chosen. The design of a two-chamber jet noise muffler developed for ACS “Bogdan” is given. As a result of introduction of the developed muffler noise reduction of level of external noise of the SPAI “Bogdan” on the basis of the chassis KrAZ-63221 car on 2–3,5 dBA in the range of speeds of movement of 45–85 km/h is forecasted.

scholarly journals Development of a Cost Effective Catalytic Converter for Diesel Automobiles

2019 ◽  
Vol 8 (3) ◽  
pp. 2989-2994
Keyword(s):  
Negative Impact ◽  
Catalytic Converter ◽  
Cost Effective ◽  
Developed Countries ◽  
Fuel Oil ◽  
Oxygen Storage ◽  
Catalytic Converters ◽  
Coating Materials ◽  
Exhaust Gases ◽  
The Developed Countries

The purpose of the work presented in this paper is to find and suggest a suitable solution to the exhaust pollution coming from the Diesel Automobiles particularly in the metro cities. Due to incomplete combustion of fuel oil pollutants like CO, HC, NOx are released into atmosphere causing negative impact on air quality, environment and human health. Researchers all over the world concentrated on how to reduce the pollutants. Euro norms specify the allowable percentages of CO, HC and NOx in the exhaust gases. Euro norms being implemented in the developed countries have given stringent values which has led to the development of catalytic converter which is an added equipment in automobile. Hitherto in the catalytic converters supplied in modern cars, Platinum and Rhodium metals are used for coating monoliths. These metals are rare and hence expensive. In the research carried out by the authors, suitable monolith substrates are tested and used in the catalytic converters with coating materials like CeO2 , ZrO2 over clay marbles, Copper Monolith and SS Discs which help NOx¬ abatement and oxygen storage. These were designed, fabricated and tested on automobiles. The results are encouraging showing marked fall of pollutants in exhaust gases.

scholarly journals Assessment of the Environmental Impact of Noxious Emissions by Energy Enterprises into the Atmosphere of the Mining Region

2018 ◽  
Vol 41 ◽  
pp. 02016
Author(s):  
Svetlana Grigashkina ◽  
Maksim Grigashkin ◽  
Andrew Miller
Keyword(s):  
Environmental Impact ◽  
Power Plants ◽  
Swot Analysis ◽  
Negative Impact ◽  
Mining Region ◽  
Harmful Emissions ◽  
Harmful Substances ◽  
Energy Companies ◽  
The Impact ◽  
Emissions Of Harmful Substances

The article addresses the impact of harmful emissions on the environment from the activities of energy companies. Thepurpose of the study is to assess the environmental impact of emissions of harmful substances by energy enterprises into the atmosphere of the mining region. The analysis of the harmful impact on the environment of noxious emissions by energy enterprises into the atmosphere of the mining region is carried out. The main result of the work is the generalized SWOT-analysis of the assessment of the negative impact on the environment by noxious emissions from power plants into the atmosphere of the mining region of theKemerovo Region; and the system of measures aimed at solving environmental problems.

EMISSION OF POLYCYCLIC AROMATIC HYDROCARBONS CONTAINED IN COMBUSTION PRODUCTS OF GASOLINE ENGINES

2018 ◽  
Vol 62 (3) ◽  
pp. 341-346 ◽  
Author(s):  
M. Assad ◽  
V. V. Grushevski ◽  
O. G. Penyazkov ◽  
I. N. Tarasenko
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
High Speed ◽  
Internal Combustion Engines ◽  
Catalytic Converter ◽  
Combustion Products ◽  
Chromatography Method ◽  
Exhaust Gases ◽  
Polycyclic Aromatic ◽  
Load Mode

The concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in the gasoline combustion products emitted into the atmosphere by internal combustion engines (ICE) has been measured using the gas chromatography method. The concentrations of PAHs in the exhaust gases sampled behind a catalytic converter has been determined when the ICE operates in five modes: idle mode, high speed mode, load mode, ICE cold start mode (engine warm-up) and transient mode. Using 92 RON, 95 RON and 98 RON gasoline the effect of the octane number of gasoline on the PAHs content in the exhaust gases has been revealed. The concentration of the most carcinogenic component (benzo(α)pyrene) in the exhaust gases behind a catalytic converter significantly exceeds a reference value of benzo(α)pyrene in the atmospheric air established by the WHO and the EU for ICE in the load mode.

Green Beans Cultivation Using Mice Pets Control to Improve the Quality of Bintaro Fruit Extract

2018 ◽  
Vol 1 (1) ◽  
pp. 38
Author(s):  
Ajeng Embri Legawati ◽  
Nur Azizah ◽  
Achmad Ramadhan
Keyword(s):  
Natural Resources ◽  
Negative Impact ◽  
Green Beans ◽  
Fruit Extract ◽  
Bean Plants ◽  
Cultivation Technology ◽  
Environmental Balance ◽  
The Impact ◽  
Chemical Pesticides

Green beans cultivation technology using mice pets control has been implemented in the Gluranploso village, Benjeng Gresik. The implementation of the technology performed for 2.5 months from August to October 2017. The purpose of the implementation is aimed to reduce the dependence of farmers on the use of chemical pesticides so that the farmers are aware of the negative impact of chemical pesticides. Assessing the impact of the utilization of Bintaro fruit and fruit extracts to explore ways of making Bintaro as a natural biopesticide to overcome rat attack on green bean plants in the Gluranploso village. Pest control mice can reduce the rate of loss of the crops more effectively and efficiently. Finally, with the use of those natural resources as a biopesticide material can also maintain the environmental balance

TO THE QUESTION OF THE IMPACT OF CLIMATE CHANGE ON THE ECOLOGICAL STATE OF ARTIFICIAL PLANTATIONS OF PITSUNDSKAYA PINE IN THE SEASIDE AREA OF GELENDZHIK

2017 ◽  
Author(s):  
Elizaveta Derevenets ◽  
Elizaveta Derevenets
Keyword(s):  
Negative Impact ◽  
Standard Technique ◽  
Negative Influence ◽  
Exhaust Gases ◽  
The Road ◽  
Industrial Enterprises ◽  
Federal Highway ◽  
On The Road ◽  
The Impact ◽  
The City

Gelendzhik is the resort town, there aren't a lot of industrial enterprises here. The main pollutant is transport. The work purpose is the assessment of a condition of the artificial landings of a pine located along the Federal highway "Don" and landings, which is nearly the sea coast. Researches were conducted to a standard technique of the General vital state (A. S. Bogolyubov). The assessment of a condition of pines was carried out during 6 years: from 2010 to 2015. For carrying out research we used 6 experimental grounds on the Markotkhsky spine and 2 control grounds within the town. We investigated 24 trees on each platform, middle age of the trees were 30 - 40 years. Results. 1. The condition of trees in the pine forests located in immediate proximity with the Federal highway "Don" (No. 1, 2, 3) is unsatisfactory. As even weak influences of the majority of atmospheric gaseous pollutants (sulphurous gas, nitrogen oxides, etc.) give effect of a necrosis and hloroz of pine needles, the condition of pines is connected with technogenic pollution. So near the Federal highway "Don" the air environment is strongly polluted by exhaust gases. Information of 2012 confirm that negative influence of the route on Markotkh's vegetation decreases at reduction of load of the route. 2. On the sites located above on a slope (No. 4,5,6) thanks to remoteness and the wind mode intensity of influence of pollutants is lower and a condition of pines the quite satisfactory. 3. Trees on the sites located near the sea (No. 7,8) are in a good shape. Small deterioration of a state is noted in very droughty years. Conclusion. Results of six years' research show that the condition of the plantings which are in close proximity with the road worsens. It is explained by increase in intensity of the movement on the road, especially during a resort season. Gelendzhik is the city with a good ecological shape, but the damage to environment is already caused. If not to take measures, we can lose a unique part of the nature in the future, recreate it will be impossible. Measures of reduction of negative impact of exhaust gases were offered. Results of researches are transferred to ecological department of the City administration of Gelendzhik.

CHRONOBIOLOGICAL AND PSYCHOEMOTIONAL STATUS IN WOMEN WITH CHRONIC RECURRENT BACTERIAL CYSTITIS AND CARBOHYDRATE METABOLISM DISORDER

2020 ◽  
pp. 56-59
Author(s):  
Мария Николаевна Химичева ◽  
Андрей Владимирович Кузьменко ◽  
Владимир Васильевич Кузьменко ◽  
Тимур Асланбекович Гяургиев
Keyword(s):  
Chronic Disease ◽  
Carbohydrate Metabolism ◽  
Negative Impact ◽  
High Risk Group ◽  
Chronic Complications ◽  
Course Of Disease ◽  
Metabolism Disorder ◽  
Common Group ◽  
Tract Infections

Инфекции мочевых путей - наиболее распространённая группа заболеваний в практике врача уролога. Один из представителей является хронический рецидивирующий бактериальный цистит. Данное заболевание встречается во всех возрастных категориях и затрагивает все сферы жизни пациентов. Симптомы, возникающие при обострении хронического бактериального цистита, оказывают негативное влияние на качество жизни, что может приводить к нарушению психоэмоционального состояния больных. Отдельную группу высокого риска в отношении ИНМП составляют пациенты с нарушением углеводного обмена, у которых риск развития различных инфекций выше, чем у людей без подобных нарушений. К факторам, повышающим риск развития ИНМП у больных с нарушением углеводного обмена, относят возраст, компенсацию и наличие хронических осложнений, в первую очередь нефропатии и цистопатии. Человеческий организм функционирует циклически в соответствии с определенными индивидуальными ритмами. Любое хроническое заболевание приводит к рассогласованию процессов, протекающих в различных системах организма, вызывая развитие десинхроноза. Наличие у человека более 1 хронического заболевания утяжеляет течение болезни и приводит к снижению восстановительных способностей организма и сокращению его адаптационного потенциала Urinary tract Infections are the most common group of diseases in the practice of a urologist. One of the representatives is chronic recurrent bacterial cystitis. This disease occurs in all age categories and affects all areas of life of patients. Symptoms that occur with the exacerbation of chronic bacterial cystitis have a negative impact on the quality of life, which can lead to a violation of the psychoemotional state of patients. A separate high-risk group for INMP is patients with impaired carbohydrate metabolism, who have a higher risk of developing various infections than people without such disorders. Factors that increase the risk of developing INMP in patients with impaired carbohydrate metabolism include age, compensation, and the presence of chronic complications, primarily nephropathy and cystopathy. The human body functions cyclically in accordance with certain individual rhythms. Any chronic disease leads to misalignment of the processes occurring in various body systems, causing the development of DS, the Presence of more than 1 chronic disease complicates the course of disease and leads to a decrease in regenerative abilities of the organism and reduce its adaptive capacity

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