湿法fgd喷嘴选择及布置（Selection and arrangement of wet FGD nozzle）.docVIP

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湿法fgd喷嘴选择及布置（Selection and arrangement of wet FGD nozzle）.doc

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湿法fgd喷嘴选择及布置（Selection and arrangement of wet FGD nozzle） Nozzle selection and layout design of limestone gypsum wet FGD Nozzle selection and layout design of limestone gypsum wet FGD Two 223) This paper deals with the important position, function and working principle of nozzle in limestone one generation wet process, and introduces the main performance parameters of nozzle, The performance characteristics of several nozzles are presented. On this basis, combined with the experience of nozzle layout design both at home and abroad. The pressure that should be paid attention to in the layout of nozzle is summarized. Keywords: desulfurization, nozzle, flow rate, pressure Foreword Limestone gypsum wet flue gas desulfurization process is a mature desulfurization technology developed and gradually improved in the 1960s It has high desulfurization rate, high operational reliability and high utilization rate of desulfurizer. It is suitable for large capacity unit and coal with high sulfur content as well as by-product A bin Comprehensive utilization and so on. Therefore, limestone gypsum wet desulfurization process has been widely used in coal-fired power station desulfurization devices at home and abroad. In the limestone gypsum wet flue gas desulfurization process, the limestone slurry is subjected to countercurrent washing in the desulfurization, and is sprayed by the atomizing nozzle Generate C,, The limestone slurry droplets react with S0 in the flue gas, aSO.2H0, and flow into the slurry tank with small particles to oxidize The air is sprayed into the slurry and forced to oxidize to form CaO.H0 crystals. Pump out the slurry with gypsum and send it to a gypsum cyclone S, 22 The concentration and size grading, dilute, flow back the desulfurization tower, the underflow belt machine are concentrated to vacuum dehydration of gypsum. The atomizing nozzle for spraying limestone slurry in the spray tower is the important reason to control the operation and maintenance cost o