Study On Leaching Fluidized Bed Of Petroleum Contaminated Soil Based On Fluent Software

The article mainly introduced the research on the treating high concentrated of petroleumcontaminated soil by fluidized leaching technology. Experimental program were designed byorthogonal experiment assistant. FLUENT was adopted as the test means to simulate theinternal flow field of leaching fluidized bed. Instead of the leaching agent and oilcontaminated soil,the cold model test of the leaching fluidized bed equipment used water andsoil as the material, which can provide the theoretical data to the thermal model test.The structure of the leaching fluidized bed affects its internal operating result directly.Compared with the available countercurrent leaching fluidized bed, The cross-flow leachingfluidized bed had the problem that the partial fluidization velocity of mud was so high that alarge amount of which outflowed from the outlet, or flowed into the water inlet. And it cannot be improved by adjusting the initial operating conditions. Therefore, the countercurrentleaching fluidized bed whose structural design parameters derived from the existingsmall-scale countercurrent leaching fluidized bed was chose as the trial equipment, and therange of operating parameters can be estimated by the generalized fluidization formula.The design of the available countercurrent leaching fluidized bed was quite reasonable,but there were some problems in the process of fluidization, for instance, the expansionsection of the equipment densed slurry of little use, and water overflow was not smooth, andso on, especially in the case of feeding the40mesh soil. Installation of an overflow weir atthe outlet, not only to bring these issues to be improved and more uniform distribution of soilparticles in the fluidized leaching segment.Through comprehensive comparison of the above options,the effect of the countercurrentleaching fluidized bed with the overflow weir was better, and has the potential to furtheroptimize space, and its test data can be used as post-optimization design favorablebasis.