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Bài viết này đề cập có hiệu quả cao (99,5%), hạt kỹ thuật loại bỏ thường yêu cầu các nhà máy điện hiện đại, nhà ga trung tâm. Đọc cũng được gọi để bài viết "Loại bỏ hạt" cho một cuộc thảo luận về phương pháp kiểm soát bao gồm cả những người được sử dụng khi điều kiện trung bình áp dụng. Công ty điện lực được yêu cầu để phân tích các đề xuất, và sau đó để mua, lọc tĩnh điện dựa trên chi phí và hiệu suất. Các yếu tố thiết kế cơ sở xác định. | ELECTROSTATIC PRECIPITATION This article deals with high efficiency 99.5 particulate removal techniques often required of modern central station power plants. The reader is also referred to the article Particulate Removal for a discussion of control methods including those used when more moderate conditions apply. Electric power companies are required to analyze proposals for and subsequently to purchase electrostatic precipitators based on cost and performance. The basic design factors which determine the collection efficiency are the collecting plate area the velocity of the gas the time that the gases are in contact with the discharge wires and collecting plates and the electrical system supplying the useful power to the flue gas. It is the differences in these factors in the manufacturers proposals that give the engineer the most trouble in choosing the precipitator that will continually produce the required efficiency. The amount of useful power and therefore the collection efficiency is primarily determined by the number of active high tension electrical bus sections into which the precipitator is divided see Figure 1 . The collection efficiency of a precipitator is closely related to the useful amount of electrical power than can be supplied to the precipitator the greater the useful power the higher the efficiency. If we imagine a precipitator with all the discharge wires being supplied by one power source through a single cable the highest voltage that could be maintained between the wires and the collecting plates would be limited by the first wire to spark excessively. The reason that one wire may spark excessively before another is due to many factors including uneven distribution of the gas and dust as they enter the precipitator uneven build up of ash on the wires and plates mechanical misalignment of the wires or plates and the fact that the collection process produces a different amount of ash in the gas at the entrance and discharge end of the .
