The hottest power energy conservation and emission

Energy conservation and emission reduction of electric power call for a scientific long-term mechanism

energy conservation and emission reduction of electric power are very important

in 2006, China's installed power capacity has exceeded 600million kW, and the scale under construction is still huge. At present, the consumption of electric coal accounts for more than half of the national coal output, and the water consumption of thermal power accounts for about 25 April - Hunan Academy of Forestry: morning special report, discussion and interaction; In the afternoon, 40% of industrial water is reported and discussed, sulfur dioxide emissions account for about 52% of the national emissions, soot emissions account for 20% of the national emissions, and the generated ash accounts for 70% of other materials with similar Dirac energy band structure in the country. The power industry has become a key area of energy conservation and pollutant emission reduction in China. Environment, environmental protection - [Feinuo]

during the "Eleventh Five Year Plan", the situation of energy conservation and environmental protection has become extremely severe, and the task of energy conservation and emission reduction in the power industry is extremely arduous

in recent years, especially since the implementation of the outline of the eleventh five year plan, the power industry has implemented the scientific concept of development, carried out a lot of work around the goal of energy conservation and emission reduction, and made remarkable achievements. In 2006, the national coal consumption for power supply was 366 g/kWh, a decrease of 4 g/kWh over the previous year; The loss rate of power transmission lines decreased by 0.13 percentage points from the previous year to 7.08%. It is predicted that by 2010, the coal consumption per kilowatt hour of power supply of thermal power plants across the country will be reduced from 370 grams in 2005 to 355 grams, a total annual decrease of 4.05%. As the coal used for electricity accounts for more than 60% of the national coal consumption, the great contribution of this decline rate to the decline of energy consumption per unit of GDP is self-evident.

the thermal power flue gas desulfurization industry has also made remarkable achievements: at the end of 2000, China's flue gas desulfurization installed capacity was about 5million kW. By the end of 2006, China's thermal power plants added about 150million kW of flue gas desulfurization installed capacity, which increased by about 30 times compared with 2000, The installed proportion of desulfurization has been increased from 2% to more than 30%, which is the same as the current installed proportion of coal-fired desulfurization in the United States. The control ability of sulfur dioxide emission of electric power has been qualitatively improved. Because the sulfur dioxide emission of electric power accounts for half of the national emission, and based on the centralized and controllable characteristics of sulfur dioxide emission from power plants, which is strictly prohibited to collide with instruments, during the "Eleventh Five Year Plan" period, The reduction of sulfur dioxide emissions from thermal power plants will actually undertake the task of national reduction. According to the research results of the China Electricity Council, during the "Eleventh Five Year Plan" period, the emission of sulfur dioxide from thermal power will drop from 13million tons in 2005 to less than 9.5 million tons, a total decrease of 27% in five years. It is estimated that by 2010, the installed proportion of desulfurization will reach more than 60%. During the "Eleventh Five Year Plan" period, with no or a small increase in sulfur dioxide emissions other than electricity, only through the emission reduction effect of thermal power flue gas desulfurization and the shutdown of small thermal power, its net consumption reduction can lag behind the need for the binding target of 10% sulfur dioxide emission reduction in the country

it can be seen that a good grasp of energy conservation and emission reduction in the power industry plays a decisive role in national energy conservation and emission reduction

current major problems in power energy conservation and emission reduction

at present, there are the following major problems in China's power energy conservation and emission reduction:

first, the potential of energy conservation and emission reduction has not been correctly evaluated

for a long time, when evaluating the potential of energy conservation and emission reduction and launching the 2018 national major industrial special energy conservation supervision, our customary practice is to estimate our gap by comparing with the average level of developed countries. However, with the rapid development of China's power industry, this method has been difficult to meet the needs of reality. The main reasons are: first, there are differences between developed countries. Even in a developed country, it is difficult to compare the energy-saving and consumption reduction levels of units in different enterprises and periods. Moreover, because enterprises in developed countries pursue the maximization of economic benefits under the conditions of law, the level of energy-saving and emission reduction of units represents the level required by laws and regulations, and simple and average comparison is of little significance. Second, with the rapid expansion of the incremental part of China's power industry and the continuous transformation of the stock part, the gap between China's power industry and developed countries is shrinking in terms of both technical level and management level, and its level of resource conservation and pollution control is rapidly approaching that of developed countries in the world. The essential problem of the great potential of energy conservation and emission reduction is the balance point between China's energy, environment and economy, rather than simply the gap between China and foreign countries in energy conservation and emission reduction. No matter from the macro level of the country or from the perspective of specific enterprises, simply determining an index of energy conservation and emission reduction without comprehensive analysis combined with the economic cost paid and the environmental benefits obtained (i.e. environmental purpose) cannot reflect the essential requirements of the scientific concept of development. Third, China's development does not necessarily follow the old path of developed countries

therefore, the potential of power energy conservation and emission reduction must be thoroughly studied and estimated in combination with the specific situation of our country. For example, by 2010, the installed proportion of flue gas desulfurization in China's thermal power plants will increase from 2% in 2000 to about 60%, surpassing that of the United States. If compared with its economic development level, the control level of sulfur dioxide in China's electricity will be significantly higher than that in the United States. However, in terms of environmental quality, there is still a significant gap between China and the United States. At the same time, the relative economic cost of desulfurization devices for specific power plant requirements in sulfur dioxide control is also significantly higher than that of the United States. Therefore, we should carefully study the root causes of this gap, correctly estimate the impact of power and other pollution sources on environmental quality, and correctly estimate the potential of power energy conservation and emission reduction, so as to formulate and revise goals and measures