scholarly journals ENVIRONMENT СО & СО2 EMISSIONS PROPOSED REDUCING MEASURES

2020 ◽  
Vol 5 (4(73)) ◽  
pp. 30-34
Author(s):  
A.G. Taranin
Keyword(s):  
Energy Efficiency ◽  
Hydrogen Content ◽  
Diesel Engines ◽  
Petroleum Refining ◽  
Oil Quality ◽  
Calorific Value ◽  
Fuel Oil ◽  
Exhaust Gas ◽  
Maintenance Costs ◽  
Gas Atmosphere

The Diesel Engines (ICE) exhaust gas atmosphere noxious emissions reducing measures were introduced by the different editions and engine manufacturer publications already 25 years ago. Many of that have used up to present depend of its installation, usage and maintenance costs. For the mentioned above 25 years of emissions decreasing ways practical using on the vessels has identified it further usage consistency and profitability (efficiency). The atmosphere SОХ noxious emissions proposed decreasing way is directly connected with using fuel oil, i.e. at the fuel oil sulphur content decreasing the SОХ emission has decreasing too, that is task not for ship owners, but for petroleum-refining manufactures and bunkering companies. СО and СО2 emissions decreasing is a corner task, as a fuel oil quality and lower calorific value are identified by the carbon & hydrogen content. Thus the fuel oil carbon and hydrogen content decreasing will bring to the decreasing of a quality and lower calorific value. Therefore all of this 25 years for the vessels diesel engines (ICE) exhaust gases СО & СО2 emissions decreasing the energy efficiency task is stated. Our proposed way can allow to resolve the СО & СО2 emissions decreasing task for the engines operation parts of loads and nominal loads.

scholarly journals ENVIRONMENT СО & СО2 EMISSIONS PROPOSED REDUCING MEASURES

2020 ◽  
Vol 1 (27(54)) ◽  
pp. 26-32
Author(s):  
A.G. Taranin
Keyword(s):  
Energy Efficiency ◽  
Hydrogen Content ◽  
Diesel Engines ◽  
Petroleum Refining ◽  
Oil Quality ◽  
Calorific Value ◽  
Fuel Oil ◽  
Exhaust Gas ◽  
Maintenance Costs ◽  
Gas Atmosphere

The Diesel Engines (ICE) exhaust gas atmosphere noxious emissions reducing measures were introduced by the different editions and engine manufacturer publications already 25 years ago. Many of that have used up to present depend of its installation, usage and maintenance costs. For the mentioned above 25 years of emissions decreasing ways practical using on the vessels has identified it further usage consistency and profitability (efficiency). The atmosphere SОХ noxious emissions proposed decreasing way is directly connected with using fuel oil, i.e. at the fuel oil sulphur content decreasing the SОХ emission has decreasing too, that is task not for ship owners, but for petroleum-refining manufactures and bunkering companies. СО and СО2 emissions decreasing is a corner task, as a fuel oil quality and lower calorific value are identified by the carbon & hydrogen content. Thus the fuel oil carbon and hydrogen content decreasing will bring to the decreasing of a quality and lower calorific value. Therefore all of this 25 years for the vessels diesel engines (ICE) exhaust gases СО & СО2 emissions decreasing the energy efficiency task is stated. Our proposed way can allow to resolve the СО & СО2 emissions decreasing task for the engines operation parts of loads and nominal loads.

Research on Application of Waste Plastic Disposal of Marine Diesel Engines

2008 ◽  
Vol 45 (04) ◽  
pp. 191-193
Author(s):  
Wei Hai-jun ◽  
Wang Guo-you ◽  
Wang Xiao-rui
Keyword(s):  
Diesel Engines ◽  
Calorific Value ◽  
Diesel Oil ◽  
Fuel Oil ◽  
Advanced Technique ◽  
Engine Operation ◽  
Waste Plastic ◽  
Marine Diesel ◽  
Points Of View ◽  
Research On Application

The purpose of this paper is to study the applicability of thermal processed fuel oil (hereafter called waste plastic disposal, or WPD) of diesel engines using low-quality fuel oil. In the experiment, stability of engine operation and components of exhaust gas, such as NOx and COx, were inspected from basic and applicable points of view. This paper illustrates a new test and result of WPD oil applied to marine diesel engines. In recent years, efforts have to be made to develop an advanced technique for recycling waste plastics in order to use scrapped plastics as fuel for diesel engines. It is very important and necessary for us to cope with the increasing calorific value and to satisfy the growing need of environment protection. The experimental fuel oil is obtained by a mixing of diesel oil, WPD, and water.

scholarly journals PEMAKAIAN BAHAN BAKAR GAS MENJADI ALTERNATIF BAGI KENDARAAN BERMOTOR BERBAHAN BAKAR PREMIUM

2012 ◽  
Vol 17 (1) ◽  
pp. 18
Author(s):  
Indartono Indartono
Keyword(s):  
Energy Efficiency ◽  
Alternative Fuels ◽  
Motor Vehicle ◽  
Alternative Fuel ◽  
Fuel Oil ◽  
Motor Vehicles ◽  
Exhaust Gas ◽  
Fuel Gas ◽  
Potential Source ◽  
Selection Of

Indartono, in paper use of alternative fuel gas for a motor vehicle fuel oil explain that in many ways energy efficiency can also be more than just preservation. Energy efficiency is an attempt to reduce the use of petroleum materials and the selection of alternative fuels. Improved energy efficiency is also an environmental demands, because it can reduce air pollution, acid rain control the incidence and protect the earth from global warming, which may occur due to buildup of carbon dioxide in the atmosphere. One of the alternative fuel is CNG. In motor vehicles, CNG usage advantages include lower price, the exhaust gas is cleaner burning results and the potential source is still very large. Keywords: energy efficiency, fuel, CNG

MV “CRYSTAL STAR” Diesel Turbocharger Surge Cause Analysis and Troubleshooting

2014 ◽  
Vol 672-674 ◽  
pp. 1562-1567
Author(s):  
Bin Li ◽  
Shou Jun Zhang
Keyword(s):  
Working Conditions ◽  
Diesel Engines ◽  
Preventive Measures ◽  
Fuel Oil ◽  
Marine Diesel Engine ◽  
Exhaust Gas ◽  
Oil Consumption ◽  
Cause Analysis ◽  
Shipping Costs ◽  
Marine Diesel

Currently shipping costs are increasing sharply due to the rising oil prices. In order to reduce shipping costs, most low-speed two-stroke diesel engines run at low speeds to reduce fuel oil consumption, and this measure might result turbocharger surge. For modern marine diesel engines, the exhaust gas turbochargers are becoming more and more important; their working conditions have a direct impact on the performance of diesel engines, consequently affecting the operation of the ship. Surge will fail a turbocharger to achieve the supercharging ratio, damage the turbocharger components and even lead to a damage accident of the whole turbocharger. Therefore, a good understanding of the reasons for marine diesel engine turbocharger surge will help to prevent and eliminate turbocharger surge in operation. This paper is to make an analysis on the special surge mechanism occurred to the turbocharger on MV "Crystal Star", and propose some appropriate supervisory and preventive measures against the problem.

scholarly journals IMPROVING BIO-OIL QUALITY VIA CO-PYROLYSIS EMPTY FRUIT BUNCHES AND POLYPROPILEN PLASTIC WASTE

Konversi ◽  
2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Sunarno Sunarno ◽  
Alfi Randi ◽  
Panca Setia Utama ◽  
Silvia Reni Yenti ◽  
Wisrayetti Wisrayetti ◽  
...  
Keyword(s):  
Oil Palm ◽  
Alternative Fuels ◽  
Pyrolysis Temperature ◽  
Oil Quality ◽  
Calorific Value ◽  
Plastic Waste ◽  
Fuel Oil ◽  
Raw Material ◽  
Empty Fruit Bunches ◽  
Bio Oil

The current consumption of fuel oil, especially gasoline and diesel oil, is increasing. Along with the decline in production, national oil production activities encourage efforts to find alternative fuels as a substitute for oil-based energy supplies. Bio-oil is an environmentally friendly alternative fuel for diesel that can be used as fuel. In this study, the raw materials were palm oil empty bunches and polypropylene plastic waste. The purpose of this study was to determine the effect of the ratio of raw material for oil palm empty fruit bunches and polypropylene, the effect of co-pyrolysis temperature on the yield of bio-oil and determine the characteristics of the resulting bio-oil. This study used the variable ratio of oil palm empty fruit bunches and polypropylene (100:0, 80:20, 70:30 and 60:40) and co-pyrolysis temperature (400, 450, 500 and 550 °C). The results showed that the highest yield of bio-oil was obtained, namely 41.6% with a ratio of EFB: PP (80:20) at temperature of 450 °C. The characterization of the product obtained was density of 0.891 g/ml,  viscosity of 4.18 cSt,  pH of 3.38 and  calorific value of 43.2 MJ/kg.

An Improvement of Part Load Performance of Diesel Engines Operating at Constant Speed Conditions

1994 ◽  
Vol 208 (1) ◽  
pp. 21-25 ◽  
Author(s):  
A A Abdel-Rahman ◽  
M K Ibrahim ◽  
A A Said
Keyword(s):  
Fuel Consumption ◽  
Diesel Engines ◽  
Petroleum Refining ◽  
Specific Fuel Consumption ◽  
Constant Speed ◽  
Maximum Pressure ◽  
Brake Specific Fuel Consumption ◽  
Part Load ◽  
Generating Sets ◽  
In Series

This paper discusses the possibility of improving the part load performance of diesel electric turbocharged engines operating at constant speed conditions. A sequential turbocharged system is proposed, where the compressors are connected In series. The study focused on two turbocharged diesel–electric generating sets existing at Ameria Petroleum Refining Company in Alexandria, Egypt. The results of the prediction showed that, at part load, both the maximum pressure and temperature were increased, and the brake specific fuel consumption was reduced considerably (by about 10 per cent).

Effect of Sulphur Content of Fuel Oil on the Corrosion Wear of Diesel Engines

1963 ◽  
Vol 12 (4) ◽  
pp. 172-178
Author(s):  
Nobuo Inami ◽  
Kazuo Inouchi ◽  
Kazuo Ôtake
Keyword(s):  
Diesel Engines ◽  
Sulphur Content ◽  
Fuel Oil ◽  
Corrosion Wear

Efficiency Centered Maintenance of Preheat Train of a Crude Oil Distillation Unit

2020 ◽  
Author(s):  
J. Fajardo ◽  
D. Yabrudy ◽  
D. Barreto ◽  
C. Negrete ◽  
B. Sarria ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Energy Efficiency ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Transfer Coefficient ◽  
Operational Reliability ◽  
Distillation Unit ◽  
Maintenance Costs ◽  
Oil Refineries ◽  
The Cost

Abstract Nowadays, maintenance is based on the synergistic integration of operational reliability and timely maintenance, which guarantees the required availability and optimal cost. Operational reliability implies producing more, better performance, longer life, and availability. Timely maintenance involves the least time out of service, fewer maintenance costs, fewer operating costs, and less money. In this work, we study the preheating train of a crude distillation unit of a refinery, which processes 994 m3/h, which presents a formation of a fouling layer inside it. Among the impacts of fouling is the reduction in the effectiveness of heat transfer, the increase in fuel consumption, the increase in CO2 emissions, the increase in maintenance costs, and the decrease in the profit margin of process. An appropriate cleaning program of the surface of the heat exchanger network is necessary to preserve its key performance parameters, preferably close to design values. This paper presents the maintenance method centered on energy efficiency, to plan the intervention of the preheating train equipment maintenance, which considers the economic energy improvement and the cost of the type of maintenance. The method requires the calculation of the fouling evolution from which the global heat transfer coefficient is obtained, and the heat flux is determined as a function of time. It was observed that, as time passes, the resistance provided by fouling increases and that the overall heat transfer coefficient decreases. The energy efficiency centered maintenance has an indicator of economic justification (factor J) that relates the economic-energy improvement achieved when performing maintenance, taking into account the economic effort invested. Depending on the cost of the type of maintenance to be performed, a threshold should be chosen, from which the maintenance activity is justified. The effectiveness values of the heat exchanger (ε) and the J indicator are used to form a criticality matrix, which allows prioritizing maintenance activities in each equipment. The planning of the implementation dates of the maintenance of each heat exchanger, from the maintenance method centered on energy efficiency applied to the crude distillation unit’s, preheat train, constitutes a contribution in this specific field. The conceptual design of the maintenance method centered on energy efficiency presented in this work is feasible for other heat transfer equipment used in oil refineries and industry in general. The procedure developed uses real operation values, and with its implementation, a saving of 150000 US dollars was achieved.

THE CHANCES FOR REDUCTION OF VIBRATIONS IN MECHANICAL SYSTEM WITH LOW-EMISSION SHIPS COMBUSTION ENGINES

2021 ◽  
Vol 157 (A4) ◽  
Author(s):  
R Grega ◽  
J Homišin ◽  
M Puškár ◽  
J Kul’ka ◽  
J Petróci ◽  
...  
Keyword(s):  
Mechanical System ◽  
Diesel Engines ◽  
Fuel Mixture ◽  
Adverse Impact ◽  
Exhaust Gas ◽  
Combustion Engines ◽  
Low Emission ◽  
Power Outputs ◽  
Exhaust Gas Emissions ◽  
Engine Power

Development of diesel engines is focused on reduction of exhaust gas emissions, increase of efficiency of the fuel mixture combustion and decrease of fuel consumption. Such engines are referred to as low-emission engines. Low- engines trends bring higher engine power outputs, torques and also increase of vibrations and noisiness level. In order to reduce these vibrations of diesel engines, it is necessary to apply different dynamical elements, which are able to increase an adverse impact of exciting amplitudes. One of the results is application of a pneumatic dual-mass flywheel. The pneumatic dual-mass flywheel is a dynamical element that consists of two masses (the primary and the secondary mass), which are jointed together by means of a flexible interconnection. This kind of the flywheel solution enables to change resonance areas of the mechanical system which consequently leads to reduction of vibrations.

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