Risk Analysis and Safety Evaluation on Combustion System of Gas-Steam Combined Cycle Power Plant

2014 ◽  
Vol 533 ◽  
pp. 354-359 ◽  
Author(s):  
Zhong Qiang Sun
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Risk Analysis ◽  
Combined Cycle ◽  
Generation Process ◽  
Combustion System ◽  
Toxicity Index ◽  
Combined Cycle Power Plant ◽  
Product Gas ◽  
Gas Poisoning

Under the general policy of the national energy-saving emission reduction and sustainable development, the domestic iron and steel enterprises surge in the by-product gas power generation project. There exist many dangerous and harmful factors in by-product steel gas power generation process and which easily caused casualties and the pollution of the environment. The study on risk analysis and evaluation are still relatively dearth about the by-product gas generating process of domestic steel enterprises. The boiler system on a Combined Cycle Power Plant was analyzed and evaluation by ICI/MOND fire and explosion toxicity index method and the method of fault tree analysis, which combined with the actual situation of steel plant Combined Cycle Power Plant. The results show that the combustion system is more dangerous, and the hazard index levels are reduced to lower level after safety compensatory measures except the unit toxicity index higher. The shielding device or gas alarm failure was the main cause of gas poisoning. According to the analysis some feasible measures was put forward. The study has positive guiding significance for risk management and safety administration decision of the Combined Cycle Power Plant.

Steam Turbine Driving Compressor for Gas-Steam Combined Cycle Power Plant

2009 ◽  
Author(s):  
Wancai Liu ◽  
Hui Zhang
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Combined Cycle ◽  
Thermodynamic Process ◽  
Combined Cycle Power Plant ◽  
Steam Cycle

Gas turbine is widely applied in power-generation field, especially combined gas-steam cycle. In this paper, the new scheme of steam turbine driving compressor is investigated aiming at the gas-steam combined cycle power plant. Under calculating the thermodynamic process, the new scheme is compared with the scheme of conventional gas-steam combined cycle, pointing its main merits and shortcomings. At the same time, two improved schemes of steam turbine driving compressor are discussed.

Study on the Safety Evaluation of Combustion System in Combined Cycle Power Plant

2014 ◽  
Vol 533 ◽  
pp. 365-370
Author(s):  
Zhong Qiang Sun ◽  
Jin Feng Zhang ◽  
Zai Xing Li
Keyword(s):  
Power Plant ◽  
Evaluation Method ◽  
Hazard Index ◽  
Fault Tree Analysis ◽  
Safety Evaluation ◽  
Combined Cycle ◽  
Explosion Hazard ◽  
Generation Process ◽  
Combined Cycle Power Plant ◽  
Index Evaluation

There exist many dangerous and harmful factors in by-product steel gas power generation process and which easily caused casualties and the pollution of the environment. The study on risk analysis and evaluation are still relatively dearth about the by-product gas generating process of domestic steel enterprises. The boiler system on a Combined Cycle Power Plant was analyzed and evaluation by Dow chemical fires and explosive hazard index evaluation method and the method of fault tree analysis, which combined with the actual situation of steel plant Combined Cycle Power Plant. The results show that the fire and explosion hazard of gas boiler is very dangerous, but the hazard levels are reduced to lower level after safety compensatory measures, so the safety of the device is reliable, and immediately pay is the main reason leading to the explosion of the boiler. According to the analysis some feasible measures was put forward. The study has positive guiding significance for risk management and safety administration decision of the Combined Cycle Power Plant.

Performance Modeling of Unfired Steam Cycle Using Single and Dual Pressure Once-Through Steam Generator

2011 ◽  
Author(s):  
Emad Hamid ◽  
Mike Newby ◽  
Pericles Pilidis
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Low Cost ◽  
Combined Cycle ◽  
Operating Conditions ◽  
Low Carbon ◽  
Performance Simulation ◽  
Actual Performance ◽  
Combined Cycle Power Plant ◽  
Steam Cycle

The high thermal efficiency and the use of low carbon content fuel (e.g., natural gas) have made the Combined Cycle Power Plant (CCPP) one of the best choices for power generation due to its benefits associate with low cost and low environmental impact. The performance of Unfired Steam Cycle (USC) as a part of the CCPP has significant impact on the performance of the whole power plant as it provides the CCPP with around one third of the total useful power. An accurate performance simulation of the USC is therefore necessary to analyze the effects of various operating parameters on the performance of combined cycle power plant. In this paper, a performance simulation approach for an unfired steam cycle using single and dual pressure-level of an OTSG is presented. The developed modeling method has been applied to the performance simulation of an existing unfired steam cycle power generation unit installed at Manx Electricity Authority and the results are promising. A comparison between simulated and actual performance at design and off design operating conditions of the same USC has shown a remarkable agreement with errors values below 1%.

scholarly journals Health-safety and environmental risk assessment of power plants using multi criteria decision making method

2011 ◽  
Vol 17 (4) ◽  
pp. 437-449 ◽  
Author(s):  
Ali Jozi ◽  
Alsadat Pouriyeh
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Power Plants ◽  
Underground Water ◽  
Combined Cycle ◽  
Water Levels ◽  
Combined Cycle Power Plant ◽  
Health Safety ◽  
Expert Choice ◽  
Hierarchy Process

Growing importance of environmental issues at global and regional levels including pollution of water, air etc. as well as the outcomes such as global warming and climate change has led to being considered environmental aspects as effective factors for power generation. Study ahead, aims at examination of risks resulting from activities of Yazd Combined Cycle Power Plant located in Iran. Method applied in the research is analytical hierarchy process. After identification of factors causing risk, the analytical hierarchy structure of the power plant risks were designed and weight of the criteria and sub-criteria were calculated by intensity probability product using Eigenvector Method and EXPERT CHOICE Software as well. Results indicate that in technological, health-safety, biophysical and socio economic sections of the power plant, factors influenced by the power plant activities like fire and explosion, hearing loss, quantity of groundwater, power generation are among the most important factors causing risk in the power plant. The drop in underground water levels is the most important natural consequence influenced on Yazd Combined Cycle Power Plant.

scholarly journals HYDROGEN PRODUCED BY SOLAR ENERGY AND THEIR USE AS CLEAN FUEL FOR POWER GENERATION IN A COMBINED CYCLE POWER PLANT

2016 ◽  
Vol 15 (1) ◽  
pp. 41
Author(s):  
J. C. Restrepo ◽  
O. J. Venturini ◽  
E. E. Silva ◽  
L. A. Cortabarria
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Solar Energy ◽  
Electricity Generation ◽  
Combined Cycle ◽  
Energy Utilization ◽  
Main Process ◽  
Clean Fuel ◽  
Combined Cycle Power Plant ◽  
Production Of Hydrogen

The solar energy is one of the most promising energy sources expected for the future, due at their huge potential and the wide availability around the world. However, nowadays this important source of energy is not being harnessed or even addressed in their full potential. According to the last statements, it is important to develop solar energy conversion systems of high efficiency, as well as spreading its use in other forms besides the traditional systems of electric power generation or heating systems. For this reason, in this paper, it is explored the production of hydrogen through solar energy utilization, and the later electrical energy production by burning the produced hydrogen in a combined cycle power plant. The process was modelled for 3 MWe of electricity generation, and using the organic Rankine cycle. The main process for producing hydrogen from water using solar energy is based on a two steps redox thermochemical cycle, which has a theoretical conversion efficiencies of 54% at 1600 K. It is expected that this paper could contributed to the development of ways to enable a better integration of the solar energy with the current electricity generation technologies, as well as to incentive the use of the hydrogen as a clean fuel.

Identification of Thermodynamic Combined Cycle Design Parameters Using Multi Objective and Multi Variable Optimisation Methodologies to Achieve 65% Combined Cycle Power Plant Net Efficient

2016 ◽  
Author(s):  
Sevket Baykal ◽  
Peter Rufli ◽  
Raffaele Bolliger ◽  
Francesco Fusaro ◽  
Hubert Kujawski
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
High Efficiency ◽  
New Technologies ◽  
Thermal Power ◽  
Combined Cycle ◽  
Design Parameters ◽  
Performance Parameters ◽  
Combined Cycle Power Plant ◽  
Thermodynamic Performance

Clean and cost-effective power generation is the key factor to cope with imposed challenges of competing technologies in the energy market. Improvements in thermal power generation efficiency will significantly contribute to the goals of reducing emissions and cost of electricity, thereby increasing their competitiveness. However, targeted high efficiency levels (e.g., 65% combined cycle power plant net efficiency) cannot be achieved with today’s technology. One of the main difficulties is the appropriate distribution of technology challenges among various combined cycle equipment. Optimization of the early phases of innovation in the product development for future technologies is key for their sustainability and increased likelihood of economic success. For this purpose a combined cycle power plant initial design methodology was developed with the help of the Original Equipment Manufacturers, OEMs. As the main advantage, this approach is able to combine current OEM’s state of the art in product technology with an educated guess for near future technology development. The application of the developed methodology is done on the exploration of the design parameters of new technologies to achieve 65% combined cycle power plant net efficiency. The results highlight the interdependence of the topping and bottoming cycle thermodynamic performance parameters and a large number of potential designs achieving 65% efficiency was identified. The technical realization of found thermodynamic performance parameters would be evaluated later in terms of their technological challenge and economic viability. In this respect the integrative combined cycle power plant optimization methodology is the key to analyze existing limitations and explore new technologies in order to constantly increase the value for power plant customers.

scholarly journals Tepco Futsu 2000 MW Combined Cycle Power Plant Design Features

1985 ◽  
Author(s):  
Leroy O. Tomlinson ◽  
T. Kojima
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Environmental Impact ◽  
Sound Level ◽  
Combined Cycle ◽  
Plant Design ◽  
Large Power ◽  
Combined Cycle Power Plant ◽  
Generation Plant ◽  
Power Generation Plant

The Tokyo Electric Power Company, Inc. Futsu Combined Cycle Power Generation plant is the World’s largest combined cycle power plant and when it enters commercial service in 1986 will be one of the most efficient. This plant will burn liquefied natural gas. Low heat rejection to cooling water, low sound level, low emissions and high stacks minimize the environmental impact of this large power generation plant. Features contributing to the ability of this plant to generate power economically and reliably while burning high cost fuel and producing minimum environmental impact are presented in this paper.

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