Tham khảo tài liệu 'air pollution control systems for boiler and incinerators part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 12-8 TABLE 12-2 COMPARISON OF SOME DUST COLLECTOR CHARACTERISTICS TYPE COLLECTOR EFFICIENCY POWER USED kW 1 000 cfm RELATIVE COSTS ADVANTAGES DISADVANTAGES RECOMMENDED APPLICATIONS GENERAL CONDITIONS Electrostatic Precipitator 99 X including sub- Icron size Ỉ-5 2-6 High collecting efficiency for flue particles. Very versatile collects wide va-lety of natter wet or dry collection low pressure loss and power requirement can be used with a dry scrubber for 02 reduction. Can be used In high temperature 1500 F application with favorable conditions. Medium to low operating costs. High Initial cost sensitivity to variable dust loading and gas flow rates. Performance depends on the reseosltlvlty of the particulate. Emission electrodes emit sparks thus preclpltltator not suitable for use combustible material Coal and wood waste fired boilers cement and lime kilns large utility oil fired boilers municipal solid waste fired boilers. Low sulfur coals Including western coal will require 1101 position precipitators or larger capacity units. Fabric Filter 99 X .i-J High collecting efficiency for fine particles. Fly-ash collection not affected by sulfur content of coal. Can be used with a dry scrubber for SO2 reduction. Los to Bedfun operating costs. Fabric bags susceptible to chemical attack. Fabric materials limit the temperature and limit useful life of the fabric bags. Coal fired boilers municipal solid waste fired boilers Incinerators that have controlled CjAg temperature. Care must be taken to protect the filter cloth from overheating moisture acid vapors and mechanical stress. Wet Scrubbers 1 Venturi 2 Dynaalc 551 4-12 Ĩ73- Low Initial cost simultaneous gas absorption and particle removal possible eliminates fire hazards from char and hot ash carry over. Corrosion erosion scale build up problems. Disposal costs of waste water. Vapor plume. High operating costs. Wood waste and combination wood and other fuel boilers. Coal and oil fired boilers SO2 reductions and particulate
