The Operation Optimization of Power Plant Pulverized Coal-Fired Boiler Based on Thermodynamic Calculation
|School||China University of Petroleum|
|Course||Power Engineering and Engineering Thermophysics|
|Keywords||Pulverized coal power plant boiler Operation Optimization Thermodynamic calculation Blending Software Development|
Pulverized coal power plant boiler thermal power plant equipment, its economy also determines the running costs of the entire coal-fired power plants . Boiler operation optimization is saving energy, improving energy efficiency measures can effectively improve the combustion efficiency , reduce coal consumption for power supply of the unit to improve the competitiveness of enterprises electricity . This article select the power plant 130t / h pulverized coal fired boiler for the study, a comprehensive analysis of the principles and methods of boiler thermal calculation , thermophysical properties of the fluid medium ( flue gas , air , water , and water vapor ) and furnace , superheater , reheater heat transfer unit , economizer and air preheater heat transfer law , fuel , heat transfer unit , fluid objects involved in the thermal calculation classified research and analysis of the relationships between them , complete the model structure . On the basis of the analysis of the model , the programming language Visual C development tools , the use of object-oriented programming method to complete the design of the thermodynamic calculation of the heat transfer unit class , the fluid medium class and helper classes . Of writing fluid properties calculation of standard modules and flue gas side heat transfer coefficient calculated in exile module. Finally, by using numerical iterative algorithm to achieve the whole process of the boiler thermal calculation program automatically iterative calculation . Create a 130t / h pulverized coal boiler operation optimization model to determine the objective function of the boiler operation and affect the optimization target independent variables and determine the model constraint conditions . Boiler thermal calculation , based on the development of boiler operation optimization software . Meet the conditions of safe operation of boilers , the brute-force method to solve the optimization model of boiler operation ( blending optimization optimization) and with the wind , find the boiler operating conditions when a mixture of coal blending ratio and excess air ratio , to bring the whole the boiler heating costs is optimized for the lowest goals . 130t / h pulverized coal boiler operation optimization instance , mixed coal blending ratio and excess air ratio of boiler operation .