Waste heat utilization power generation steam turbine steam parameter optimization method and system
A steam parameter and steam turbine technology, which is applied in the field of steam parameter optimization method and system for a steam turbine using waste heat for power generation, can solve problems such as adverse effects of steam turbine operation, and achieve the effect of high system efficiency
Active Publication Date: 2020-09-08
XIAN SHAANGU POWER
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[0006]
The purpose of the present invention is to provide a method and system for optimizing the steam parameters of a waste heat utilization steam turbine to solve the problem in the prior art that the unoptimized steam parameters have adverse effects on the operation of the steam turbine
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Embodiment 1
[0094] In this embodiment, the preliminary steam parameters are given as follows: 1.5MPaA, 280°C, and flow rate of 25t / h, which are used as steam parameters for the steam turbine for power generation in the waste heat project.
[0095] Taking 280°C as the given temperature, the corresponding internal efficiency of the steam turbine is about 80%, and the exhaust steam pressure is designed to be 0.01MPaA to ensure that the dryness of the exhaust steam is greater than or equal to 0.88. The intersection point pressure obtained by interpolation method is 1.92MPaA. Figure 5 shown. The effective enthalpy drop is increased by about 23kJ / kg, the output power is increased by 158kW, and the power generation is increased by about 3.6%. Of course, you can continue to increase the steam pressure at this time to increase the power generation, but it will increase the cost of the steam turbine. At the same time, too much pressure increase will increase the cost of the boiler. After comprehen...
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The invention belongs to the field of energy conservation, and discloses a waste heat utilization power generation steam turbine steam parameter optimization method and system. Whether the steam parameter value is the best for the steam turbine can be rapidly calculated according to steam parameters (temperature and pressure) given by the boiler, and the steam parameter value is the safest and themost reliable. In practical production, through optimization of the method, optimal parameters suitable for the steam turbine can be given on the premise that the temperature is not changed accordingto steam parameters given by a boiler manufacturer, the parameters are fed back to the boiler manufacturer and a user, then the advantages and disadvantages between the increase of the power generation capacity and the increase of the manufacturing cost of the whole system can be compared, and finally the optimal steam parameters of the system are obtained.
Description
technical field [0001] The invention belongs to the field of energy saving, and relates to the field of waste heat utilization in the aspects of sintering waste heat, large flue waste heat, gas utilization, etc., and particularly relates to a method and system for optimizing steam parameters of a steam turbine for power generation by waste heat utilization. Background technique [0002] Under the current energy development trend of energy conservation and emission reduction, waste heat utilization has become a vigorously developed project in petrochemical, chemical, and metallurgical industries at home and abroad, especially in sintering waste heat, large flue waste heat, and gas utilization in metallurgical enterprises. , one of the core equipment of the waste heat utilization project is the steam turbine and the waste heat boiler. Parameters such as steam are different. Usually, the temperature and pressure are low and the fluctuation range is large. There is no standardiz...
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IPC IPC(8): G06F30/20G06F119/08
CPCG06F30/20G06F2119/08
Inventor 周志明齐博闫宏亮付学伟刘伟阳白赟惠婷娟吴联为任江涛支钢林
Owner XIAN SHAANGU POWER