The waste referred to includes solid waste and sludge. Solid waste is mainly from urban garbage and industrial waste. Sludge is from water treatment factories, paper mills, chemical factories, pharmaceutical factories...The waste referred to includes solid waste and sludge. Solid waste is mainly from urban garbage and industrial waste. Sludge is from water treatment factories, paper mills, chemical factories, pharmaceutical factories, rivers and lakes. The waste and sludge are very harmful to water organisms, human health and drinking water, and directly affect the environment. Sludge and waste also occupy large areas of land. There are several methods to treat waste and sludge, such as burial, chemical treatment and incineration. Incineration is more effective than the展开更多
With the gradual acceleration of the pace of national construction, the application of electric power resources is also gradually increasing, therefore, every year the country needs to increase human and material reso...With the gradual acceleration of the pace of national construction, the application of electric power resources is also gradually increasing, therefore, every year the country needs to increase human and material resources in the construction of power plants, which contains a lot of professional and technical personnel and a large number of production equipment. For the use of production equipment, the main power plant boiler, it is the key to the development and construction of power plant equipment, to the utilization of power plant boiler can be play, therefore, relevant national researchers in the process of continuous research, compare a lot of ways, and found that the heat power engineering and combining with the power plant boiler, can play a more effective. The use of the scheme, also need to carry on a more in-depth understanding and analysis of the equipment, therefore, this paper is mainly to the combination of the two are discussed from its principle to the relevant content.展开更多
With the rapid development of social economy, people's living standards and quality have been greatly improved, and the contradiction of resources has gradually emerged. This will become an important factor restri...With the rapid development of social economy, people's living standards and quality have been greatly improved, and the contradiction of resources has gradually emerged. This will become an important factor restricting the sustainable development of mankind. Therefore, in order to better meet people's demand for various resources, the thermal power plant has put forward higher requirements. In the process of operation, the corresponding measures must be taken to solve the problems, and only in this way can the economic and social benefits be improved. In this paper, the improvement direction of thermal energy and power engineering in thermal power plant is analyzed in depth, hoping to provide reference for relevant personnel.展开更多
Ash deposition is a form of particulate fouling, and appears usually in boiler economizers. The ash deposition increases capital expenditure, energy input and maintenance costs. An analog experiment for monitoring ash...Ash deposition is a form of particulate fouling, and appears usually in boiler economizers. The ash deposition increases capital expenditure, energy input and maintenance costs. An analog experiment for monitoring ash deposition was performed from the analogous objective of a 410 t/h boiler economizer to verify the rationality and reliability of the ash-deposition-monitoring model presented in order to increase the security and economy in economizer running. The analog experiment platform is a tube-shell exchanger that conforms well to the conditions of a self-modeling area. The analog flue gas in the shell side is the heated air mixed with ash, and in the tube side the fluid is water heated by the flue gas. The fluid state in the water side and the flue gas side follows the second self-modeling area. A 4-factor-3-level orthogonal table was used to schedule 9 operation conditions of orthogonal experiment, with the 4 factors being heat power, flue gas velocity, ashes grain diameter and adding ashes quantity while the three levels are different values due to different position classes in every factor. The ash deposition thermal resistances is calculated by the model with the measure parameters of temperature and pressure drop. It shows that the values of the ash deposition thermal resistances gradually increase up to a stable state. And the experimental results are reliable by F testing method at α= 0.001. Therefore, the model can be applied in online monitoring of ash deposition in a boiler economizers in power plants and provides scientific decision on ash deposition prediction and sootblowing.展开更多
Until now, it has been difficult to obtain on-line three-dimensional (3-D) temperature distribution information which can reflect the overall combustion condition in the furnace of a coal-fired power plant boiler. A c...Until now, it has been difficult to obtain on-line three-dimensional (3-D) temperature distribution information which can reflect the overall combustion condition in the furnace of a coal-fired power plant boiler. A combustion monitoring system is introduced which can solve the problem efficiently. Through this system, the 3-D temperature distribution in a coal-fired boiler furnace can be obtained using a novel flame image processing technique. Briefly, we first outline the visualization principle. Then, the hardware and software design of the system in a 300 MW twin-furnace coal-fired boiler are introduced in detail. The visualization of the 3-D temperature distribution in the twin-furnace boiler is realized with an industrial computer and the Distributed Control System (DCS) of the boiler. The practical operation of the system shows that it can provide valuable combustion information of a furnace and is useful for the combustion diagnosis and adjustment in coal-fired power plants.展开更多
文摘The waste referred to includes solid waste and sludge. Solid waste is mainly from urban garbage and industrial waste. Sludge is from water treatment factories, paper mills, chemical factories, pharmaceutical factories, rivers and lakes. The waste and sludge are very harmful to water organisms, human health and drinking water, and directly affect the environment. Sludge and waste also occupy large areas of land. There are several methods to treat waste and sludge, such as burial, chemical treatment and incineration. Incineration is more effective than the
文摘With the gradual acceleration of the pace of national construction, the application of electric power resources is also gradually increasing, therefore, every year the country needs to increase human and material resources in the construction of power plants, which contains a lot of professional and technical personnel and a large number of production equipment. For the use of production equipment, the main power plant boiler, it is the key to the development and construction of power plant equipment, to the utilization of power plant boiler can be play, therefore, relevant national researchers in the process of continuous research, compare a lot of ways, and found that the heat power engineering and combining with the power plant boiler, can play a more effective. The use of the scheme, also need to carry on a more in-depth understanding and analysis of the equipment, therefore, this paper is mainly to the combination of the two are discussed from its principle to the relevant content.
文摘With the rapid development of social economy, people's living standards and quality have been greatly improved, and the contradiction of resources has gradually emerged. This will become an important factor restricting the sustainable development of mankind. Therefore, in order to better meet people's demand for various resources, the thermal power plant has put forward higher requirements. In the process of operation, the corresponding measures must be taken to solve the problems, and only in this way can the economic and social benefits be improved. In this paper, the improvement direction of thermal energy and power engineering in thermal power plant is analyzed in depth, hoping to provide reference for relevant personnel.
文摘Ash deposition is a form of particulate fouling, and appears usually in boiler economizers. The ash deposition increases capital expenditure, energy input and maintenance costs. An analog experiment for monitoring ash deposition was performed from the analogous objective of a 410 t/h boiler economizer to verify the rationality and reliability of the ash-deposition-monitoring model presented in order to increase the security and economy in economizer running. The analog experiment platform is a tube-shell exchanger that conforms well to the conditions of a self-modeling area. The analog flue gas in the shell side is the heated air mixed with ash, and in the tube side the fluid is water heated by the flue gas. The fluid state in the water side and the flue gas side follows the second self-modeling area. A 4-factor-3-level orthogonal table was used to schedule 9 operation conditions of orthogonal experiment, with the 4 factors being heat power, flue gas velocity, ashes grain diameter and adding ashes quantity while the three levels are different values due to different position classes in every factor. The ash deposition thermal resistances is calculated by the model with the measure parameters of temperature and pressure drop. It shows that the values of the ash deposition thermal resistances gradually increase up to a stable state. And the experimental results are reliable by F testing method at α= 0.001. Therefore, the model can be applied in online monitoring of ash deposition in a boiler economizers in power plants and provides scientific decision on ash deposition prediction and sootblowing.
基金Project 50636010 supported by the National Natural Science Foundation of China
文摘Until now, it has been difficult to obtain on-line three-dimensional (3-D) temperature distribution information which can reflect the overall combustion condition in the furnace of a coal-fired power plant boiler. A combustion monitoring system is introduced which can solve the problem efficiently. Through this system, the 3-D temperature distribution in a coal-fired boiler furnace can be obtained using a novel flame image processing technique. Briefly, we first outline the visualization principle. Then, the hardware and software design of the system in a 300 MW twin-furnace coal-fired boiler are introduced in detail. The visualization of the 3-D temperature distribution in the twin-furnace boiler is realized with an industrial computer and the Distributed Control System (DCS) of the boiler. The practical operation of the system shows that it can provide valuable combustion information of a furnace and is useful for the combustion diagnosis and adjustment in coal-fired power plants.
