| Recently, China promulgated and implemented the iron and steel sintering machine flue gas discharge standards,"Twelfth Five Year Plan" period, the environmental protection department will focus on key areas, Promote the sulfur dioxide and nitrogen oxide emission reduction projects In the steel industry, will be the full implementation of sintering machine flue gas desulfurization, A new sintering machine should be supporting the installation of desulphurization and denitrification facilities, promote active sintering machine flue gas desulfurization project.By the end of2015, the implementation of flue gas desulfurization of sintering machine and all in the city of pellet production equipment, desulfurization efficiency can reach above80%.In response to the national energy-saving emission reduction, low carbon environmental protection policy, gradually flue gas desulfurization transformation of the construction of iron and steel enterprises. While the desulfurization project of steel structure accounted for the vast majority, because the steel structure is small, light weight, convenient transportation and installation, convenient assembly and disassembly, expansion. Suitable for large span, height, bearing load structure. Steel material uniformity, stable quality, high reliability; Steel, high strength, good plasticity and toughness, impact resistance and vibration resistance ability; Steel structure, high degree of industrialization, the factory production site installation, high precision, short production period, high production efficiency, quick construction; has the advantages of good seismic performance of steel structure.Sintering machine flue gas desulfurization transformation, many old facilities increase desulfurization equipment, At the time of design not obligate desulphurization facilities area. The construction site is narrow, no processing area, completed only off-site fabrication, piecewise shipped to the construction area, sectional hoisting, lifting the environment with complex operation, high welding a large amount of difficulties. Desulfurization tower adopts pile construction technology in the processing, to avoid the risk of workers working at height, improve work efficiency, reduce the crane, high cost, reduces the construction cost.Desulfurization tower. Cones with machine section rolling; welding in site, the height of every section is a scale plate width (2m). The sub assembly in the ground platform, integral hoisting. The first section. The second section of small pyramidal outside making assembly after forming, pre hanging into the tower bracket at the lower part of the space, and3segment after the installation is complete, the chain hoisting welded into a whole. The third section is the total lifting project key, it is the assemblage ring beam and the lower cone, the whole weight of about65t, the ring beam in the factory section completed, cone field blanking. Rolling, segmental assembling forming. Making cone assembly on the working platform, turn over and the ring beam with double integral crane, double crane lifting and lower desulfurization tower bracket. The fourth section on the working platform with pole flip chip making, double crane lifting in place. The fifth section is connected part of cylinder body and cover large pyramidal dress on the platform were made into a whole, double crane lifting in place. The middle small pyramidal after hanging in place and large pyramidal spot welded into integration. This is consistent with the actual situation of the theory of design and calculation, the similar project construction to provide a reliable theoretical basis. |
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