Low-Carbon Clean Technology for Waste Energy Recovery in Power Plants Based on Green Environmental Protection

2021 ◽  
Author(s):  
Yong Tian ◽  
Wen-Jing Liu ◽  
Qi-jie Jiang ◽  
Xin-Ying Xu
Keyword(s):  
Power Generation ◽  
Power Plants ◽  
Biomass Energy ◽  
Energy Utilization ◽  
Pollutant Emissions ◽  
Total Power ◽  
Economic Losses ◽  
Biomass Waste ◽  
Emission Analysis ◽  
Total Power Consumption

With the development of biomass power generation technology, biomass waste has a more excellent recycling value. The article establishes a biomass waste inventory model based on the material flow analysis method and predicts raw material waste’s energy utilization potential. The results show that the amount of biomass waste generated from 2016 to 2020 is on the rise. In 2020, biomass waste’s energy utilization can reach 107,802,300 tons, equivalent to 1,955.28PJ of energy. Through biomass energy analysis and emission analysis, the results show that the biomass waste can generate 182.02 billion kW⋅h in 2020, which can replace 35.9% of the region’s total power consumption, which is compared with the traditional power generation method under the same power generation capacity. Power generation can reduce SO2 emissions by 250,400 tons, NOx emissions by 399,300 tons, and PM10 emissions by 49,700 tons. Reduce direct economic losses by 712 million yuan. Therefore, Chinese promotion of the recycling of biomass waste and the acceleration of the biomass energy industry’s development is of great significance for reducing pollutant emissions and alleviating energy pressure.

Study on Development Path of Electric Vehicle in China from a View of Energy Conservation and Emission Reduction

2014 ◽  
Vol 525 ◽  
pp. 355-360
Author(s):  
Wei Zheng Kong ◽  
Bi Bin Huang ◽  
Qiong Hui Li ◽  
Xiao Lu Wang
Keyword(s):  
Power Generation ◽  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Conservation ◽  
Emission Reduction ◽  
Power Plants ◽  
Clean Energy ◽  
Pollutant Emissions ◽  
Total Power ◽  
Fossil Energy

In this paper, the change of fossil energy consumption, carbon dioxide (CO2) and pollutant emissions are calculated when petroleum based vehicles (PBVs) are taken place by EVs based upon the full-cycle energy efficiency theory with the energy efficiency measured from well to wheel.. Calculation results show that the fossil energy consumption, CO2, monoxide (CO) and hydrocarbon (HC) emissions can be reduced with the substitution of EVs for vehicles that burn gasoline (GVs), but nitrogen oxides (NOx) and sulfur dioxide (SO2) emissions increase. When vehicles that burn diesel (DVs) are replaced by EVs, the emissions of pollutants except SO2 will be reduced, but the emissions of CO2 and SO2 will increase. Considering the proportion of coal-fired power generation to the total power generation in China, the goal of energy conservation and emission reduction cannot be perfectly achieved by the substitution of PBVs by EVs. Therefore, the proportion of clean energy generation should be increased in China and technological updating of coal-fired power plants for reducing CO2 and pollutant emissions are necessary as well. Besides, GVs, other than DVs, should be replaced by EVs from the perspective of energy conservation and CO2 emission.

Co-Benefit Research on IGCC Technology Used in the Power Plant

2013 ◽  
Vol 726-731 ◽  
pp. 983-987
Author(s):  
Chao Huang ◽  
Xiu Qin Ma ◽  
Feng Yun Jin ◽  
Liu Wen Su
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Economic Benefit ◽  
Power Plants ◽  
Electric Power Industry ◽  
Pollutant Emissions ◽  
Total Power ◽  
Emissions Reduction ◽  
Environmental Benefit ◽  
Generation Capacity

China has mainly power generation capacity of coal-fired power plants. Coal-fired power plants account for about 80% of total power generation capacity in total annually. It will inevitably lead to a large amount of pollutant emissions, therefore, IGCC technology is particularly important to promote. This paper intends to analysize the environmental benefit and economic benefit of the IGCC technology used in the power plant based on the developed methodology. The purpose is to understand the advantages of IGCC technology for energy conservation and emissions reduction in the electric power industry to provide better technical references.

scholarly journals NOx Emission Analysis in Flue Gas of Coal Fired Thermal Power Station and it’s Control Measure

2019 ◽  
Vol 8 (12S) ◽  
pp. 1195-1201
Keyword(s):  
Power Generation ◽  
Flue Gas ◽  
Power Plants ◽  
Thermal Power ◽  
Operating Conditions ◽  
Nox Emission ◽  
Total Power ◽  
Thermal Power Plants ◽  
Emission Analysis ◽  
Permissible Limits

The growth and development of any country is measured by the electricity generation which paves way for industrialization and mechanization. To meet the ever increasing demand, the best way to generate consistent power is setting up of large thermal power plants. India is rich with coal reserves and is very cheap when compared with other fuels, hence coal is used as the primary fuel for power generation in India. Thermal generation using coal accounts for 65% of the total power produced. Power plants in India uses different qualities of coal, different combustion technologies and operating conditions. Flue Gases emitted from coal fired thermal stations consists of CO2,(Carbon-di-oxide),SOx (Oxides of Sulphur), NOx (Oxides of Nitrogen), PM (Particulate matter) along with carbonaceous material, soot and Fly ash. These gaseous pollutants are considered as environmental burden which ultimately results in smog formation, formation of acid rain, eutrophication and global warming and has to be controlled and regulated to be within the permissible limits as stipulated by MOEF &CC (Ministry of Environmental Forest and Climate Change). This project describes about the analysis of NOx Emission in Flue Gas of Coal fired thermal stations and the measures to control the NOx emission within the permissible limits for the existing thermal power plants by modifying the combustion technology without affecting the power generation. The primary measure to control NOx emission is achieved by in - combustion control by modifying the conventional burner with the Low Nox Burner combined with Over Fire Air which bring about 45-80% NOx emission reduction, which is cost effective and could be implemented with minimum down time for installation. The application of Low Nox Burner with Over Fire Air Technology in the existing thermal power plant has reduced the emission of NOx to a considerable extent and to meet the norms within minimum period without affecting the power generation.

Thermodynamic Assessment of Hybrid PSOFC/GT Systems for Mechanical/Electric Power Generation

2000 ◽  
Author(s):  
K. K. Botros ◽  
G. R. Price ◽  
R. Parker
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Gas Turbine ◽  
Life Cycle Cost ◽  
Pressure Ratio ◽  
Pollutant Emissions ◽  
Mechanical Power ◽  
Total Power ◽  
Specific Work ◽  
System Pressure

Hybrid PSOFC/GT cycles consisting of pressurized solid oxide fuel cells integrated into gas turbine cycles are emerging as a major new power generation concept. These hybrid cycles can potentially offer thermal efficiencies exceeding 70% along with significant reductions in greenhouse gas and NOX emissions. This paper considers the PSOFC/GT cycle in terms of electrical and mechanical power generation with particular focus on gas pipeline companies interested in diversifying their assets into distributed electric generation or lowering pollutant emissions while more efficiently transporting natural gas. By replacing the conventional GT combustion chamber with an internally reformed PSOFC, electrical power is generated as a by-product while hot gases exiting the fuel cell are diverted into the gas turbine for mechanical power. A simple one-dimensional thermodynamic model of a generic PSOFC/GT cycle has shown that overall thermal efficiencies of 65% are attainable, whilst almost tripling the specific work (i.e. energy per unit mass of air). The main finding of this paper is that the amount of electric power generated ranges from 60–80% of the total power available depending on factors such as the system pressure ratio and degree of supplementary firing before the gas turbine. Ultimately, the best cycle should be based on the “balance of plant”, which considers factors such as life cycle cost analysis, business and market focus, and environmental emission issues.

Analytic Hierarchy Process of Environmental Social Groups for Promoting Biomass Energy in Taiwan

2014 ◽  
Vol 1008-1009 ◽  
pp. 89-92
Author(s):  
Yi Ti Tung ◽  
Tzu Yi Pai ◽  
Ya Chin Kang ◽  
Yu Ping Chen ◽  
Tzu Chiang Huang ◽  
...  
Keyword(s):  
Power Generation ◽  
Social Groups ◽  
Green Energy ◽  
Biomass Energy ◽  
Total Power ◽  
Low Carbon ◽  
Analytic Hierarchy ◽  
Energy Education ◽  
Power Generation Technology ◽  
Hierarchy Process

This study adopted analytical hierarchical process (AHP) to evaluate the significance of the criterion of policy regarding promoting biomass energy, taking environmental social groups’ points of view into consideration. The analytical results of the study are as follows. The experts from environmental social groups suggested that the most important major criteria are in the order as follows: policy criterion layer, technical criterion layer, economy criterion layer, and energy education criterion layer. As for the global weights of the criteria, the criteria with top five weights are in the order as follows: “active development of green energy industry by government”, “supply and consumption method of low-carbon and low-pollution energy”, “increase of percentage of power generation from renewable energy in total power supply”, “encourage manufacturers to develop new biomass power generation technology”, and “continually develop the technology projects which has potential and prospects in the future”.

scholarly journals An Economic and Technology Analysis of a New High-Efficiency Biomass Cogeneration System: A Case Study in DC County, China

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3957
Author(s):  
Hui Huang ◽  
Xiaoli Yan ◽  
Shizhong Song ◽  
Yingying Du ◽  
Yanlei Guo
Keyword(s):  
Power Generation ◽  
Power Plants ◽  
High Efficiency ◽  
Biomass Energy ◽  
Utilization Efficiency ◽  
Water Heating ◽  
Circulating Water ◽  
Cogeneration System ◽  
Biomass Power Plants ◽  
Heating Technology

Biomass is the fourth largest energy source in the world; it is easy to store and can be converted into various kinds of renewable energies. The biomass cogeneration system is an important way to utilize biomass energy, especially in northern China. At present, there are many problems in biomass power plants in China, such as high latent heat loss of chimney and cooling towers, low power generation efficiency, and thermal efficiency. In order to solve this problem, this paper introduces low vacuum circulating water heating technology in the biomass cogeneration system, and expounds the differences between China and Western countries in biomass power plants. Based on this background, the technology is redesigned and reformed to make it more suitable for the biomass fuel varieties in the power plant location, and realize the localization of technology and the expansion of scale. The application of this improved technology in China’s biomass cogeneration project is analyzed. Based on the biomass cogeneration project in the DC County of China, the analysis confirms that the designed low vacuum circulating water heating technology is suitable for biomass power generation projects with agricultural and forestry wastes as raw materials, and its application can greatly improve the heat utilization efficiency of the whole cogeneration system. At the same time, in order to estimate the possibility of profitable investment when the key financial parameters change, the financial risk is analyzed. The results show that the probability of 90% net present value (NPV) in 15 years is between 355.28 million RMB and 623.96 million RMB, and the internal rate of return can reach 17.7%.

A comprehensive evaluation and optimal utilization structure of crop straw-based energy production in eastern China

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 2850-2868
Keyword(s):  
Power Generation ◽  
Energy Production ◽  
Optimal Allocation ◽  
Fuzzy Ahp ◽  
Eastern China ◽  
Biomass Energy ◽  
Energy Utilization ◽  
Important Indicator ◽  
Crop Straw ◽  
Bioenergy Production

Crop straw is a major agricultural residue and has been recently promoted as a main source for renewable biomass energy production in China. This study used the fuzzy analytical hierarchy process (Fuzzy AHP) model considering four major indicators to systematically evaluate the performance of four major crop straw energy utilization methods in the eastern Chinese province of Jiangsu. The utilization methods include straw power generation, straw gasification, straw liquefaction, and straw densification into briquette fuel. The results showed that environmental friendliness was the most important indicator that should be considered for straw bioenergy production in the province and that straw densification into briquette fuel was the most suitable straw energy utilization method. Under the policy goal proposed by the Chinese central government to use 20% of all crop straw waste for straw bioenergy production by 2030, the estimated results suggested that the optimal allocation towards straw energy production structure is 40.1% for straw densification into briquette fuel production, 35.3% for straw power generation, 19.6% for straw gasification, and 5% for straw liquefaction. The finding that straw densification into briquette fuel was judged to be the most favorable option could guide policy makers and investors to develop suitable straw energy technologies in Eastern China.

Impact of integrated HSE management system on power generation in Iran by a unique mathematical programming approach

2016 ◽  
Vol 13 (1) ◽  
pp. 82-90 ◽  
Author(s):  
A. Azadeh ◽  
S. Motevali Haghighi ◽  
M. Hosseinabadi Farahani ◽  
R. Yazdanparast
Keyword(s):  
Power Generation ◽  
Performance Assessment ◽  
Power Plants ◽  
Electrical Power ◽  
Labor Cost ◽  
Total Power ◽  
Programming Approach ◽  
Content Type ◽  
Mathematical Programming Approach ◽  
Installed Capacity

Purpose Concern for health, safety and environment (HSE) is increasing in many developing countries, especially in energy industries. Improving power plants efficiencies in terms of HSE issues requires considering these issues in performance assessment of power generation units. This study aims to discuss the use of data envelopment analysis methodology for the performance assessment of electrical power plants in Iran by considering HSE and conventional indicators. Design/methodology/approach Installed capacity, fuel consumption, labor cost, internal power, forced outage hours, operating hours and total power generation along with HSE indices are taken into consideration for determining the efficiency of 20 electric power plants or decision-making units (DMUs). Moreover, DMUs are ranked based on their relative efficiency scores. Findings Results show that HSE factors are significant in performance assessment of the power plants studied in this research, and among HSE factors, health has the most powerful impact on the efficiency of the power plants. Originality/value The approach of this study could be used for continuous improvement of combined HSE and conventional factors. It would also help managers to have better comprehension of key shaping factors in terms of HSE.

scholarly journals Gasification of coal and biomass as a net carbon-negative power source for environment-friendly electricity generation in China

2019 ◽  
Vol 116 (17) ◽  
pp. 8206-8213 ◽  
Author(s):  
Xi Lu ◽  
Liang Cao ◽  
Haikun Wang ◽  
Wei Peng ◽  
Jia Xing ◽  
...  
Keyword(s):  
Air Quality ◽  
Electricity Generation ◽  
Power Plants ◽  
Air Pollutant ◽  
Biomass Energy ◽  
Pollutant Emissions ◽  
Electricity Production ◽  
Levelized Cost Of Electricity ◽  
Negative Power ◽  
Near Term

Realizing the goal of the Paris Agreement to limit global warming to 2 °C by the end of this century will most likely require deployment of carbon-negative technologies. It is particularly important that China, as the world’s top carbon emitter, avoids being locked into carbon-intensive, coal-fired power-generation technologies and undertakes a smooth transition from high- to negative-carbon electricity production. We focus here on deploying a combination of coal and biomass energy to produce electricity in China using an integrated gasification cycle system combined with carbon capture and storage (CBECCS). Such a system will also reduce air pollutant emissions, thus contributing to China’s near-term goal of improving air quality. We evaluate the bus-bar electricity-generation prices for CBECCS with mixing ratios of crop residues varying from 0 to 100%, as well as associated costs for carbon mitigation and cobenefits for air quality. We find that CBECCS systems employing a crop residue ratio of 35% could produce electricity with net-zero life-cycle emissions of greenhouse gases, with a levelized cost of electricity of no more than 9.2 US cents per kilowatt hour. A carbon price of approximately $52.0 per ton would make CBECCS cost-competitive with pulverized coal power plants. Therefore, our results provide critical insights for designing a CBECCS strategy in China to harness near-term air-quality cobenefits while laying the foundation for achieving negative carbon emissions in the long run.

scholarly journals Turkey’s Energy Strategy for 2023 Targets after 2000 MW Giant Renewable Energy Contract

2018 ◽  
Vol 64 ◽  
pp. 01001 ◽  
Author(s):  
Sogukpinar Haci ◽  
Bozkurt Ismail ◽  
Cag Serkan
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Power Plants ◽  
Waste Heat ◽  
Total Power ◽  
Total Production ◽  
Power Capacity ◽  
Energy Potential ◽  
Biomass Waste ◽  
The Government

Turkey wants to become the world’s 10th largest economy in the 100th anniversary of the foundation of the republic of Turkey. In order to achieve this goal, there are many breakthroughs in the political, economic and in energy fields. Turkey’s installed power capacity was 85000 MW in 2017 but installed power of 125.000MW is targeted to achieve the objective of 2023 targets. The government is aiming to increase the total production of renewable energy share by 30% in 2023, while foreseeing the increase in capacity due to nuclear and fossil fuel consumption. Targets for different technologies are 34000 MW hydroelectric, 20000 MW wind energy, 5000 MW solar energy (photovoltaic and condensed solar energy), 1000 MW geothermal energy and 1000 MW biomass. Capacity utilization in hydroelectricity is 62%, wind power is 14%, and geothermal power is 33%. The total installed capacity of Biogas, Biomass, Waste Heat and Pyrolytic Oil Power Plants is 530 MW. Theoretical total power capacity of the solar energy for Turkey as 300 TWh/year and reached 45% of the 2023 target in 2017 in the last three years. However, it is estimated that the targets of 2023 in solar energy can be exceeded. Government offers attractive incentive packages for renewable and other energy sector to achieve 2023 goals. In order to encourage domestic production, a total of 2000 MW wind and solar energy installation bid was carried out in 2017. This contract is expected to make Turkey as energy hub both in terms of installation and technology. In this study, Turkey’s renewable energy potential, and energy strategies and breakthroughs for this were investigated and discussed.

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