The Design Of The Coal-fired Power Plants Precipitator Transformed Into The Bag Filter Precipitator

Electrostatic precipitator as the main equipment of coal-fired power plant flue gas purification, early in the coal-fired boiler flue gas purification system at home and abroad, has been widely used. Relevant data show that China’s early more than80%of coal-fired power plant flue gas purification device is the use of electric dust collector. In recent years, as the country is more and more strict with the concentration of carbon, early design of electrostatic precipitators have been unable to meet the requirements of the new envirostaic precipitators have been unable to meet the requirements of the new environmental protection standards, so you need to upgrade. But only for electrical precipitaor ontology conventional reconstruction is still cannot achieve the requirements of the new standard! in order to seek the most economic and reasonable scheme, the method of comparative analysis in this article, through reference engineering example, put forward four feasible retrofit scheme of electrostatic precipitators. Through the analysis, the characteristics of each method are pointed out. Concluded that four kinds of retrofit scheme is feasible, but have their own applicable conditions. From the view of economy, energy conservation and purification efficiency, the optimal plan to transform electrical precipitator is converted into electricity-electrostatic precipitators composite filter bag; The second is the all-electric bag filter.Into the design of the bag filter, electrostatic precipitators are often of limited access to the original electric precipitator technology system; In the practical transformation, also often appear induced draft fan of the original electric systems can not meet the requirement of the bag filter used in modified problem. To solve these problems, this article through the theoretical analysis and detailed design, and the detailed design to the engineering practice of inspection method, put forward the overall design of the route and method of transformation of electrical dust catcher. Design is the overall route; first of all to consider the original working condition of the electric system, determine the transformation plan; By means of analysis and calculation, and then determine after modification of the specifications of the bag filter, Then for the detail design of bag filter, Finally, the modified system parameters such as air volume, pressure and power calculation, determine the retrofit scheme of induced draft fan system. In order to prove the feasibility and rationality of design, this paper introduces the design in Huainan Xinji coal mine power plant electrical precipitator transform the practical application in engineering. The conclusion is:in this paper, the design method is correct and reasonable; The application result in the actual engineering practice is also very satisfied.