Lọc bụi tĩnh điện ướt (WESP) là một thiết bị cơ khí sử dụng lực lượng chủ yếu là điện hạt tách biệt khỏi dòng khí. Những bề mặt thu thập được làm sạch định kỳ bằng cách sử dụng nước hoặc dẫn khác phù hợp xả nước lỏng, do đó, tên nước tĩnh điện. Các thành phần cơ bản của WESP một thể hiện trong hình 20,1. Chúng bao gồm một mức độ thấp (hiển thị) hoặc khí cấp cao đầu vào, ống thu thập, các loại cột điện cực gắn trên một mạng lưới hoặc khung, phần cách. | chapter 20 Wet electrostatic precipitators Device type The wet electrostatic precipitator WESP is a mechanical device that uses primarily electrostatic forces to separate particulate from gas streams. The collecting surfaces are periodically cleaned using water or other suitable conductive flushing liquid thus the name wet electrostatic precipitator. The basic components of a WESP are shown in Figure . They consist of either a low level shown or high level gas inlet collecting tubes mast type electrodes mounted on a grid or frame a high voltage insulator section an air-purged insulator compartment to prevent particulate from coating the high voltage insulator section a high voltage power supply trans-former rectifier set and a gas outlet. The designs also include various types of cleaning or irrigation systems that are used to purge the tubes of captured particulate. These purge systems may include fog nozzles spray nozzles or weir type irrigation systems. Typical applications and uses WESPs are frequently used to collect submicron particulate that arises from combustion drying operations process chemical production and similar sources. They are also used as polishing devices to reduce particulate loadings to extremely low levels. They are generally used where the inlet loading of particulate is under grs dscf and where corrosive gases may be present. They also excel where the particulate is sticky but can be water flushed. They often replace fiberbed filters or similar coalescing devices where solid particulate is present that could plug the fiberbed design. Wet precipitators are increasingly being used as final cleanup devices behind and in combination with other air pollution control devices. This chapter is contributed by Wayne T. Hartshorn Hart Environmental Inc. Lehighton Pennsylvania. 2002 by CRC Press LLC Figure WESP components Entoleter Inc. . Applications include chemical and hazardous waste incinerators hog fuel boilers acid mists steel mill
