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Breakthrough progress in cyclone separation technology in China
How to collect submicron dust has become a research hotspot and difficult point in the aerosol and dust removal fields at home and abroad. A new type of cyclone dust removal technology that can effectively capture sub-micron dusts passed the expert appraisal organized by the Science and Technology Department of Shandong Province last week. It is reported that the cyclonic cyclone separation equipment produced using this technology has been applied in more than 100 sets of domestic chemical industry, and the annual savings for enterprises has increased by 150 million yuan, which indicates that China's cyclone dust removal technology has made a breakthrough. It is understood that the large amount of submicron dust discharged from industrial production is more harmful to humans and the environment than other particle sizes, but it is difficult to remove. In the dust removal methods commonly used in industry today, the gravity sedimentation method can only separate coarse particles of 100 μm or more; the conventional cyclone dust collector can separate fine particles of about 10 μm, and efficient multi-cyclone dust collectors can also trap fine dust of more than 5 μm. Set down; Wet washing separation method is to collect dust through the liquid layer, droplets and liquid film, it can separate 1 ~ 5μm dust, high efficiency and reliable, but the gas is easy to entrain liquid mist, and can only be compared The use of low temperature, but also has the problem of large secondary pollution equipment; filter separation can effectively trap 1 ~ 0.1μm down, but the huge equipment, high cost and operating costs, and can not deal with condensation Or dust absorption of strong materials; electrostatic precipitator on the 0.01 ~ 1μm dust has a good separation efficiency, but the equipment cost is too high, the operation and management requirements are relatively high. After ten years of research and development by the Qingdao University of Science and Technology, a cyclone cyclone dust collector and a circulating circulation dust removal system have effectively overcome the deficiencies of the above dust removal device. The expert group believes that this series of technology is based on the theoretical research results of multiphase fluid turbulent flow. The performance indicators of the cyclone cyclone dust collector developed are all at the leading level of similar equipment. The eight patents developed have solved more than 40 engineering problems for enterprises and expanded the application of cyclone technology. The dust particle radius of the system can reach a minimum of 1μm, reaching the level of electrostatic precipitator; more than 10 times the gas treatment capacity of the traditional cyclone dust collector; at the same time with a reduced pressure, amplifying effects, an area of ​​province, less investment, Low operating costs and other advantages. According to predictions of relevant state departments, in the next three years, the dust removal equipment that the state will only need to invest in the field of environmental protection will reach more than 300 billion yuan, including cyclone dust removal. Therefore, the application prospects of this series of technologies are extremely broad.